Just came back fromThe Big box store, the lady employee did not know what a duct was.. oh ,you mean the pipe... Thank you for giving me the information I needed.. my 6-in round was reduced to 4 in flex with a 3-in exhaust port.
My contractor is smart. He used a coiled flexible hose and closed the walls even though I asked for a solid straight steel duct. I turned on my $1,000 range full blast, lit a match, blew it out and watched the smoke not get drawn in. When I asked him what he did he was honest and told me he did not do what I asked because his way works just fine.
Very great demonstration Erik, probably the best on youtube. I like that you give detalis and reasonings of why and why not. Can you make videos of an average US household ducting, starting from the unit, trunk, fitting, transitions, and ending on the vent cover? :)
The rules of high velocity air still apply today. Most importantly, the exhaust opening must match the square inches of the pipe your connecting it to for zero loss.
Great video! It describes many dumb things that the team did when they installed my unsuable hood... and confirms my plan to fix it! I'm wondering: what kind of sound dampening could be used between the pipe and a big surround cover (think hood surface all the way to the ceiling). The hoods was so loud... surely because of the flex pipe used that I'm replacing. but I'm guessing that the vibration in that big box might also create quite a bit of noise. Thanks!
Thank you Erik....I renovated a 350 yr old barn...Kitchen took me 18 months alone...26× 26...used a Best fan and internal damper/flaps rattle...Have not been able to resolve the problem.
I would suggest reaching out to purcell murray who distributes best products. They will be the warranty agent and can troubleshoot the issue best on there internal flaps. Here is how you locate them www.purcellmurray.com/company/distribution/
Erik, great explaining and demonstration on how to repair and clean the Ventahood. It seems the electrical contractors damaged the Left fan wheel (10 years ago) when they built our house, so it has been making a loud noise (wheel banging against the grease catch) anytime we turn on the fan. After 10 years of listening to the fan wheel banging, I finally watch your videos and made the repair myself. Thank you!
Excellent demonstration and instructions. I'm having a twin 48" installed in a new home. The HVAC guys didn't want to run straight up to the roof because its very high and they were concerned about condensation. It will vent to a back patio with one 90 degree elbow. Should I be concerned about odors or noise on the patio?
One significant component never mentioned in this video is installing a spring activated, rubber sealed damper vent above the range hood exhaust in residential homes. They are usually installed in the cabinet above the stove & most are 8 inch diameter. The importance of the damper (not the plastic flaps shown here) is that when the exhaust fan is turned off the damper closes. This prevents both heat & cold AC air from flowing freely out through the exterior roof or wall vent cap during the winter & summer months & greatly reduces energy loss. When you turn the fan on, the light tension springs allow the damper to open & then close, sealing the exhaust vent when the fan is off. Just look up the thermal image videos on YT showing how much heat & cold air escape through the kitchen range exhaust fan roof vent or housing. The lower or higher exterior air temperature literally Sucks the air out through the range hood ductwork. Gravity flaps as seen here get caked with grease over time and stick open and are the very worst type of damper to use. Installing an 8 inch spring damper with rubber seals is very easy if the ductwork is accessible thru the kitchen cabinet above the range hood, as seen in most homes. Installing this type of damper can greatly reduce your electric & gas bills year round
You will find that vent a hood offers an assortment of roof jacks and wall louvers that feature there own gravity closing flap. The flap on the exterior of the house is the one that's intended to seal your home from the loss of ac and heat for customers that have this concern. These internal flaps serve other purposes including preventing blowback when operating only one blower on a ventilation hood equipped with duel blowers.
We did install one of those spring activated sealed dampers (twice). Mainly because, even though we installed a quality goose neck roof vent with gravity flap, we were able to hear all the outside noises; mowers, neighbors playing in pool, music, air crafts, etc., coming down the duct. We installed one of those sealed dampers into the duct above the above the hood to duct connection. Before completely re-stalling the the hood, we decided to test it out. The damper was great for sounds but when we turned the vent on the damper only opened partially, even at full strength. After troubleshooting with customer service rotating the damper to different positions, was deemed defective. Keep in mind, each time we had to turn it, we had to remove/replace the vent hood! After the replacement came and was installed, the same thing happened. All I could think, was how many people inserted these dampers and then installed their hood, without verifying the damper worked. Waste of money and time!
The problem you say that you had is the result of insufficient air pressure from the range hood fan. This can be easily remedied by simple replacing the fan blade itself with a fan blade that has a steeper angle of the individual fan blades. The steeper angle creates higher air flow because the sharp blade angle will cause that. You see this demonstrated on high volume home fans or swamp fans that have the sharper pitch. The problem with most newer range hoods is simply low pitch fan blades that run quieter. These replacement blades are cheap to buy and install since the motor drive shaft for the fan on most range hoods is standard, around 3-4 millimeters. This fix-it trick is usually known by only experienced tradesmen, either HVAC or general home repairs. Sorry to inform you but you do NOT have to remove the range hood assembly to check to see if the fan is supplying enough air pressure to open the louvers on the spring loaded damper. To see if the fan has good enough blade pitch, all you have to do is remove the grease filter from the range hood and then use a flashlight to look up at the running fan & see if the damper louvers are opening sufficiently. They do NOT have to open anymore than 25 to 30 degree angles. They don't even have to open at 45 degrees angles to allow for sufficient evacuation of air below the range hood. To find the replacement fan blades for range hoods you would search for "range hood replacement fan blades". You'll see all kinds of blades with the sharper angle for increased air flow & increased air pressure to open the damper louvers. Hope this helps enlighten you
@@JudgeBusterGood info on the blades! Sure would have been nice to have been informed on this during troubleshooting. We only removed the hood when we had to reset or remove the damper. The testing was done as you stated with hood in tact, looking up thru the fan. Thanks for the info, I since sold that home and currently looking to install a hood in current home. Feel better armed with more helpful info!
Excellent demonstration ! You should list your web site so we can purchase are range hood. Also installation video will be helpful keep up the good work God Bless!!
Excellent presentation/demo. I'm about to install a range hood with 3.25x10 rectangular opening with an adpter to use a 6" round opening. Will using the adapter cause a lot of degradation in performance? Also, the cieling opening is a 5.75 square hole. Can you please let me know if I should go a head with this type of installation? Thank you very much.
I live in the midwest where we regularly get cold winters. Is it necessary to insulate the duct work running through the attic and out the roof as to prevent condensation?
In California we do not have this requirement.Building codes can vary depending on your region and I recommend reaching out to a local inspector to determine your cities requirements
@@coreyk01 i would recommend researching the distributors in your region of the country for the ventilation hood brand you plan to purchasing. Ask them if they have any installers they recommend.
Pl advise best software or manuals Round / circular process duct calculation including, Expansion joint, Stiffner, development, pressure drop, Load calculation on each support
Hey Eric, I know you stated you don’t like spring-loaded backdraft dampers because they create a negative pressure. But the gravity dampers make a terrible racket with wind and provide insufficient backdraft reduction. Do you use / know of any inline backdraft dampers that are ideal? I’ve read mixed reviews on Tamarack’s inline cape backdraft damper. I really don’t want the noise of a steel damper hitting in the wind.
I have had customers add a gasket strip to there backdraft door to dampen any opening and closing sounds/. I do not have any experience with inline dampers, good or bad. If you do put in a section of ducting that includes dampers I would place it in the attic where it can be accessed . Once the backdraft dampers have years of grease on them they stop opening and closing as well. I would want to be able to access it to service the parts and dampers if you choose that system .
Great information! Just built a home where it's windy. We installed Zephyr double motor/fan vent hood. We hear mega volume of wind blowing through the ducting and stressing me out. We have been experimenting with candy cane venting and wind caps to resolve impact of the wind. Any thoughts and or suggestions?
Vent a hoods have internal flaps, and flaps on the wall louver. Unless there are heavy winds blowing the flaps open the cold air should be limited. You could tape a small weight to your flap if the wind is blowing it open.
Great video. If I need to vent right out the exterior wall with 8' ceilings and my hood has a 6" exhaust. Can I use 6" to 8" duct "enlarger" and then use your 8" backvent elbow? I think I would have room for both pieces.
I’m curious on how to vent a range that butts up against and interior wall with a second floor above. If I vent my range the standard way, it would put the vent in the garage. Do I have to run duct work in the garage out the back or is the other options?
I understand that going through the second floor is not an option. In this scenario Id be looking at venting through the garage to an outside wall. Or you would be need to consider the re-circulation hood options
Hi Eric, I had the exiting 7" duct pipe in the wall , my new range hood come with 6", can I able to use the reducer from 6" out to 7". Thank for the great video
Yes. You can always duct through the side of a house as oppose to a roof. It’s much easier when The hood in installed on a wall that backs up to the outside ( as oppose to a a wall that’s in the middle of a home ).
Really an outstanding sharing of your expertise. Thanks very much. A question of expertise on elbows: suppose you had a question of running 3 feet up to an elbow and then 4 feet out to an outside wall versus seven feet straight up to a roof exit, how much restriction to flow do you suppose the elbow would give to the first seven-foot run over the second elbow-less seven-foot run?
The unit is rated to make a turn in the duct pipe without impacting its power rating,. You will only get into an issue running to many elbows back to back . The unit may run slightly quieter with a straight duct run. This would be the onlt difference between those two scenraios
Great video thank you. But most of these videos all seem to miss one major important thing. And that is insulation from outside temperature. Here in Alberta Canada, like many other parts of the world suffer temps down to minus 40C Vent pipelines for clothes dryers and other vents all ice up if not insulated. With many homes still having only 4” thick outer walls that cold will easily follow the vent piping into the home. So could you address, and show us how to properly insulate a wall outlet style vent all the way back to the hood connection in a chimney style range hood. Thank you. 🍻 PS: Just remembered another thing and that is makeup air supply for the higher cfm hoods. 👍
What do you think about mounting the fan inline motor directly below with no elbow untill after motor pipe is 125mm long vertical exhaust 1.5 floors, straight out the flat roof?
The vent a hood system has a patented internal blower and it sits inside the blower housing to cause the grease to liquefy in the blower housing. For this reason we dont offer any inline motors for other product brands. I would recommend calling the manufacturer of the hood purchased to determine what blower options can be used.
Eric, thanks for doing this video; a lot of great information and you talked me right out of doing it myself. I could, but I'm short on time and I'd rather have someone like yourself do it who knows much better than what they're doing. What kind of contractor should I search for who can do this level of work? An HVAC company, or appliance installation or what? Not sure what to look for. Thanks again!
I would call the distributor of the product in your region of the country and ask them for a list of recommended installers . For a list of vent a hood distributors click here www.ventahood.com/index.php/support/parts-service they will likely have a list of appliance installers servicing your state
So if I remove the damper flap, I should be able to run the smaller pipe? Just kidding, installing a 3 fan vent-a-hood this weekend. Utilizing VAH 8" & 6" into one 10". Gonna cap with 10" Air King cap. Should blow my cooking aromas at the neighbors! Thanks for the info! Scott
How about the direction of the duct work in relation to the smaller end(male end) vs big end(female end) of the piping. Considering the direction of airflow, would it hurt anything if the pipe coming from your range is fitting around the outside of the following pipe as opposed to fitting inside? I was doing my ductwork for my range hood and started working from the roof cap, on down to the range. I used a connector underneath my roof cap prior to installation to make it easier to connect the ductwork, but the connector had the smaller corrugated end on both sides which had me working backwards so to speak. So starting at the roof cap, everything fits INTO the next piece of ductwork working down to the range as opposed to fitting OUTSIDE of eachother. Was curious if this is enough to disrupt airflow to a noticeable degree or not.
I go into more detail about the collar direction in this video ruclips.net/video/a9YJ1cYddVQ/видео.html basically just creates little air pockets that can make the hood sound a bit louder . You can always go back with high heat metal tape and tape around each joint from the inside smoothing those air pockets so they dont make noise .
I am looking at changing kitchen....our vent goes outside, to side, not up. we are getting a bigger range so to centre all we need to MOVE the vent over a few inches. Is this possible?
Every home installation is different. There is a good chance your contractor will need to begin cutting holes in the wall to determine if movement of the pipe is possible
Erik Bergstorm -- where can I find the well cap you used as an example in the video --- non spring loaded -- but, most of all I like the square access cut but still use round piping
I had my roofer install an 8” exhaust vent “hood” in my roof when I was having a new roof installed few months ago & planned to use a Viking island hood that was 8” exhaust. Long story made short, the Viking hood itself was too large for the area where I need to install & I picked up a different hood that is 6” fitted. Is there any problem with me running the 6” pipe up to the vent cap and put a reducer on to actually make the 6” pipe now fit the 8” vent installed in my roof? I’m not really “reducing” air flow…would actually be making it 2” bigger right before exiting the roof by going from 6” to the 8”
I want to clarify that we caution against square pipe when hard turns are used that impact the speed of the exhausting air. The manufacturer does make a venting transition model number vp561 that can be used to convert the 8 inch round to a 6 by 8 1/2 inch square using a gradient 45 degree angle. When using this transition it will turn the air very quickly and this can increase the overall sound volume of moving air in my experience. The fewer turns made in the duct run keeps the sound of moving air to a minimum. The duct pipe can be converted to square when space is limited and if this conversion is required, we would like to see a gradient turn as oppose to a hard 90.
+erik bergstrom Great video. Near the start of the video you mention "circumference " when I think you meant the "area" of the 8 inch duct should not be reduced ( Pi R squared) As apposed to 2 Pi R) Great video. Things like this make me want to buy your products over your competitors. Are they made in America?
I would look in google for your closest sheet metal fabricator . They make up these types of roof caps. Then I’d use chicken wire over the opening. Something that doesn’t cause too much resistance for the exhausting air
@@erikbergstrom451 Erik, thanks for the reply. I saw the chicken wire idea in another of your videos. I’m planning an outdoor hood for my 32” grill, located in a covered lanai and vent it through the roof, looking at 900-1200 CFM. Your videos are the most “to the point” I’ve come across. Thanks!
I would google for a sheet metal fabricator in your area, and call those leads to determine who has these parts in stock. if they don't have an item in stack they can make the item/ HVAC installers typically buy all there ductwork from these fabricators.
A good explanation Erik. I have a different situation though and hope you can help. My gas stove is on an interior wall. I am currently using a microwave venting inside. It is too loud and does not have enough speed selections. Is it possible to switch over to a vent hood and run the ducting down the interior wall and under the kitchen floor and use a remote vent fan in the basement and then vent it through an exterior wall about three to four feet off the ground. They would only be two 90 degree articulating elbows and there would be about 7 feet between the elbows. Can this be done and Is that legal? Any information/assistance you can provide would be greatly appreciated. Thank you for doing a detailed video with way more information than any other video I’ve seen. Thanks. Ron
Hello, The products I sell are not designed to be vented downward. There are products on the market such as downdraft systems that where created to exhaust air downward. Elica Aspire Series ERS636S1, You should know that these systems would not outperform having a canopy above your stove with a duct to the exterior wall. For some situations its the best option depending on limitation in the home to duct upward . PM me for information on reaching a rep for Elica
With the flexible pipe , you can bend it and create a cold air trap to the outside. With straight rigid pipe you can not. Just curious if you ever used cold air traps, or if there is one made for rigid pipes. Thanks.
you will want to look at the Manuel that came with your stove top to determine its btu heat output. you need at least 100 CFM for every 10,000 BTUs of heat rising from the cooking equipment. See the output of each burner. Most households are cooking on only 2-3 burners simultaneous, in addition most of those butrners are only at 30 percent power. By doing the math you can get an idea of how much power you will need. Most will go with at least 600 cfm of power
Depending on the brand of duct pipe you purchase it can range between 22-30 gauge. There is no standard in the industry for gauge, and it has not been a criteria for home inspectors .
Very informative video and appreciated. What is the name of the duct you are holding at 4:13 in the video? I need one like that to get past a truss for my range hood exhaust. Thank you.
Thank you for the video. We just finished installing a blue start range hood and used flex pipe. This was a very difficult installation and the pipe bend on one side just a little. The ventilation is very good but I was just wondering if having the small bent on the pipe is a big deal; It bend because once compressed, the wall is double with a big space in between and the pipe goes in an angle from the inside hole to the outside hole. I can hear the difference in speeds but in reality I would like to make sure it is perfectly installed. Any advised?
In many areas, Including California , its against code. many installer will use it since its easier then getting a flat wall custom transition made. In very short lengths it wont hurt your performance unless the pipe is doing back to back 90 degree turns. It tends to make the sound of the moving air louder,.. These are the only drawbacks I know of
I'm in Florida, our storms would prevent me from using the high flow roof cap as our rain can sometimes come in vertically from any side. What would i use?
I have a current square duct installed through the roof but bought a hood that takes a round one. Doing a complete kitchen remodel. I also need to move it 3 feet to the right. Do you sell conversion kits? What’s the best way to do this?
This is great information! The previous owner of my home installed a microwave above my range that recirculates the air though the kitchen/house...HATE IT. I do not see any duct work, but I want to get a REAL exhaust system. Any recommendations on where I should start? Thanks so much!
Thanks, Eric! Perhaps our situation is not so unique. I haven’t found any information online similar to our project. We are rehabbing a 100 yr old house and decided to update the kitchen. The house at 1330 sq ft has been a fun challenge. We decided to install the gas cooktop right next to its original fireplace chimney. The cabinet above the stove will house the blower. I don’t think we need a hood since we have the cabinet. What vent should we start looking at? And how can we install the most efficient, safe and cost effective way possible. There will 2 right angles - one from vent to fireplace then another to final duct to roof. Or should we just install one and use chimney as duct?
Hello - it sounds like a very challenging rehab. Its hard to get a perfect visual based on this message. There are a few suggestions I can send your way. In los angeles county california and surrounding regions where I live, it is against fire code to vent a cootop into a chimney. For this reason it doesnt pass code from the city inspector, and if they house burned down from a related issue your homeowners insurance likely not cover the damage. I would check with the city inspector in your region to determine if there is any acceptable safe way to go about this. Here is california we are unable. The cabinet above your cooktop should have a metal hood liner inserted inside. If its a wooden cabinet with a blower inside that would would be susceptible to damage from the heat a cooktop generates and would not pass code . Custom vent a hood liners can be fabricated to fit the cabinet above your cooktop/ Contact your vent a hood distributor for instructions on how to get a site servey that involves a sales rep coming to your home and drawing up a quote for a vent a hood line to fit in your existing cabinet/. www.ventahood.com/index.php/support/parts-service
There are recirculating hoods available from vent a hood, they are called ars systems send us an email with the size needed and we can check availability synergy451@yahoo.com
Thanks for the great video. I am just wondering, can you use the same exhaust venting from an existing range hood to be used by another range hood. Current one has CFM of 720 and the new one has a max CFM of 340.
You can always go larger with the exhaust vent. If the new hood required a smaller vent pipe you should replace the pipe and go with the pipe size recommended by the manufacture.
Oh... what I meant was the 340 cfm will be sharing with the 720 cfm instead of installing a completely separate venting system. We were thinking of installing a Y connector where the two ranges will eventually meet to exhaust outside. Thanks again!
There are issues you would run into. Without a backdraft damper you will get exhaust coming back through to the unused hood. You would never be able to run them simultaneous without the exhaust streams fighting each other causing vibration, excessive sound, and backpressure.
For a commercial kitchen is it better to vent through the wall or roof? We are installing a kitchen in a 100 yr old building and my partner has concerns about going through the roof with regard to liability since we are leasing the space. The company installing the hood wants to go through the roof.
Going through the roof generally makes the hood quieter, since the air isn't making a hard turn the sound of the air movement is minimal. Other then that benefit there are no other advantages other then cost and the trouble of getting the permit for the roof cap ( if applicable )
Great video but I have a question. You mentioned that when there is a restriction that you can't hear the difference between low and high speeds. Is this correct?
There are many factors that can cause this issue/. A severe restriction would cause this and also a stuck flap. Please see my video ruclips.net/video/tw8QEjewlSU/видео.html
hi, I'm having a problem. when range hood fan is on. the smell appears in other parts of the house. I check for leaks in the duct going outside thru the wall and it's sealed. have come across this before? there's a 4" round duct install now. should've I used 6"?
+walter amaral I have over the years services many older hoods that experienced leaks inside the walls. Most of these installs where 40 years old or older. Duct tape can break down after that much time has passed. Its hard to see the exterior of the pipe joints to determine if they where properly taped. It may be time to reinstall the duct. You will need someone that can handle drywall patches of you are in between floors.
+erik bergstrom I found the problem this past weekend. there was a false sealing installed in the kitchen when it was remodeled before we bought the home. the duct was leaking cooking oders into the void between the new and old ceiling and had nowhere to go but up into the other rooms in the house. thanks for your reply.
I just installed a 42in vent a hood dual blower. I have a straight run through my attic to the roof, but I was going to put in a reducer to go from 8in, to 6in. This does not hit the flaps, but will it really effect the performance going from 8in to 6?
The answer is yes. For additional over the phone assistance on this issue feel free to contact the distributor that handles the region of the country that shipped your item. They are your warranty and support for the hood you bought. They would much rather offer assistance over the phone as oppose to getting a call about warranty on the product if it doesn't perform to your needs,. Here is a list of all the product distributors . One of these companies is in charge of your warranty depending on where you purchased the item from www.ventahood.com/index.php/support/parts-service
Great info Eric! I’ve just installed a new 1200 cfm vent hood that has a 10 inch outlet, and want to find a roof exhaust that will fit. I don’t want to reduce down to 8 inch, but finding a 10 inch is proving difficult. I’ve looked locally for a T-Top and can’t find one. Do you have a source you trust?
The brand vent a hood makes a ten inch outlet, its available at ventahoodparts.com you can also call the manufacturer of your hood and inquire if the make a roof cap. In the case of the t top, you'd be going to a sheet metal fabrication company. These types opf supplier make vent pipe for hvac guys and will make up products from sheet metal such as the t top - they would also make the flange of the roof cap match the pitch of your roof
We have hoods that designed specifically to be installed inside a cabinet. They are called liners. Its very common. Here is a link to the liners I have available www.kitchenfoundry.com/vent-a-hood-wall-mount-liners.html
I just bought a professional hood with a 10inch round neck... the problem is that my actual exaust is a 3.5inch x 10inch rectangular and its not centered with the new display. What should i do?
people run into this all the time. If the standard transitions offered by the manufacturer of the hood cant get the job done. You need to draw the transition onto a piece of paper including the exact height and offset along with rectangle dimensions. Then bring this drawing to a local sheet metal supplier HVAC supplier and have the transition custom made. they can make almost anything you can draw. Get your installer involved since they have most likely done this before. Local sheet metal companies make roof caps, wall caps, and transitions all the time
I have a question which is more related to using the hood kitchen. Does it help to open the window if the hood is really strong? Or this will actually decrease its performance? Thank you!
Many of the homes being built today are airtight and they require make up air systems ( SIMILAR TO OPENING A WINDOW ) For this reason it will not negatively effect the performance of your hood if you open a window
This is by far the best video I’ve watched on venting!!!
I like that you included roof cap vents. My home has a "goose neck" style vent for the kitchen exhaust vent.
Just came back fromThe Big box store, the lady employee did not know what a duct was.. oh ,you mean the pipe... Thank you for giving me the information I needed.. my 6-in round was reduced to 4 in flex with a 3-in exhaust port.
Amazing, thank you so much. Just the information I need to know now before I install our new range hood that requires 8” ducting.
My contractor is smart. He used a coiled flexible hose and closed the walls even though I asked for a solid straight steel duct. I turned on my $1,000 range full blast, lit a match, blew it out and watched the smoke not get drawn in. When I asked him what he did he was honest and told me he did not do what I asked because his way works just fine.
I hope he never got the maney for that work. That's the only way they learn
Lawsuit
Very great demonstration Erik, probably the best on youtube. I like that you give detalis and reasonings of why and why not. Can you make videos of an average US household ducting, starting from the unit, trunk, fitting, transitions, and ending on the vent cover? :)
Your videos are so helpful! Thank you so much for posting them!
Great Video, full of information that is still relevant today even though it was made 12 years ago
The rules of high velocity air still apply today. Most importantly, the exhaust opening must match the square inches of the pipe your connecting it to for zero loss.
Exactly what I was looking for. Crisp and comprehensive. Thanks Erik.
So very helpful. Lot's of information that only a pro would know. Thanks for posting this!
Great video! It describes many dumb things that the team did when they installed my unsuable hood... and confirms my plan to fix it!
I'm wondering: what kind of sound dampening could be used between the pipe and a big surround cover (think hood surface all the way to the ceiling). The hoods was so loud... surely because of the flex pipe used that I'm replacing. but I'm guessing that the vibration in that big box might also create quite a bit of noise.
Thanks!
A true tradesman :-) Thank you for sharing your expertise :-)
Thank you Erik....I renovated a 350 yr old barn...Kitchen took me 18 months alone...26× 26...used a Best fan and internal damper/flaps rattle...Have not been able to resolve the problem.
I would suggest reaching out to purcell murray who distributes best products. They will be the warranty agent and can troubleshoot the issue best on there internal flaps. Here is how you locate them
www.purcellmurray.com/company/distribution/
@@erikbergstrom451 thanks for your suggestion Erik.
Really great information. It answered several questions I had. Thank you for posting.
Erik, great explaining and demonstration on how to repair and clean the Ventahood. It seems the electrical contractors damaged the Left fan wheel (10 years ago) when they built our house, so it has been making a loud noise (wheel banging against the grease catch) anytime we turn on the fan. After 10 years of listening to the fan wheel banging, I finally watch your videos and made the repair myself. Thank you!
what a guy. This is the only video folks need for ducting.
Best video so far ! Thanks for all the explanations.
Very helpful video, thank you! Part 1 and 2 are great.
Thank you! Because we have I'm running mine on the side upper wall of my house. So your video is very helpful.
Excellent demonstration and instructions. I'm having a twin 48" installed in a new home. The HVAC guys didn't want to run straight up to the roof because its very high and they were concerned about condensation. It will vent to a back patio with one 90 degree elbow. Should I be concerned about odors or noise on the patio?
Thanks for your detailed demonstration. Make a lot sense!
Thank you for taking the time to make this video sir, it's very helpful.
Really great information. Thanks for your detailed demonstration!
Super helpful info - thanks! Helped me avoid several mistakes.
One significant component never mentioned in this video is installing a spring activated, rubber sealed damper vent above the range hood exhaust in residential homes. They are usually installed in the cabinet above the stove & most are 8 inch diameter. The importance of the damper (not the plastic flaps shown here) is that when the exhaust fan is turned off the damper closes. This prevents both heat & cold AC air from flowing freely out through the exterior roof or wall vent cap during the winter & summer months & greatly reduces energy loss. When you turn the fan on, the light tension springs allow the damper to open & then close, sealing the exhaust vent when the fan is off. Just look up the thermal image videos on YT showing how much heat & cold air escape through the kitchen range exhaust fan roof vent or housing. The lower or higher exterior air temperature literally Sucks the air out through the range hood ductwork. Gravity flaps as seen here get caked with grease over time and stick open and are the very worst type of damper to use. Installing an 8 inch spring damper with rubber seals is very easy if the ductwork is accessible thru the kitchen cabinet above the range hood, as seen in most homes. Installing this type of damper can greatly reduce your electric & gas bills year round
You will find that vent a hood offers an assortment of roof jacks and wall louvers that feature there own gravity closing flap. The flap on the exterior of the house is the one that's intended to seal your home from the loss of ac and heat for customers that have this concern. These internal flaps serve other purposes including preventing blowback when operating only one blower on a ventilation hood equipped with duel blowers.
We did install one of those spring activated sealed dampers (twice). Mainly because, even though we installed a quality goose neck roof vent with gravity flap, we were able to hear all the outside noises; mowers, neighbors playing in pool, music, air crafts, etc., coming down the duct. We installed one of those sealed dampers into the duct above the above the hood to duct connection. Before completely re-stalling the the hood, we decided to test it out. The damper was great for sounds but when we turned the vent on the damper only opened partially, even at full strength. After troubleshooting with customer service rotating the damper to different positions, was deemed defective. Keep in mind, each time we had to turn it, we had to remove/replace the vent hood! After the replacement came and was installed, the same thing happened. All I could think, was how many people inserted these dampers and then installed their hood, without verifying the damper worked. Waste of money and time!
The problem you say that you had is the result of insufficient air pressure from the range hood fan. This can be easily remedied by simple replacing the fan blade itself with a fan blade that has a steeper angle of the individual fan blades. The steeper angle creates higher air flow because the sharp blade angle will cause that. You see this demonstrated on high volume home fans or swamp fans that have the sharper pitch. The problem with most newer range hoods is simply low pitch fan blades that run quieter. These replacement blades are cheap to buy and install since the motor drive shaft for the fan on most range hoods is standard, around 3-4 millimeters. This fix-it trick is usually known by only experienced tradesmen, either HVAC or general home repairs.
Sorry to inform you but you do NOT have to remove the range hood assembly to check to see if the fan is supplying enough air pressure to open the louvers on the spring loaded damper. To see if the fan has good enough blade pitch, all you have to do is remove the grease filter from the range hood and then use a flashlight to look up at the running fan & see if the damper louvers are opening sufficiently. They do NOT have to open anymore than 25 to 30 degree angles. They don't even have to open at 45 degrees angles to allow for sufficient evacuation of air below the range hood.
To find the replacement fan blades for range hoods you would search for "range hood replacement fan blades". You'll see all kinds of blades with the sharper angle for increased air flow & increased air pressure to open the damper louvers.
Hope this helps enlighten you
@@JudgeBusterGood info on the blades! Sure would have been nice to have been informed on this during troubleshooting. We only removed the hood when we had to reset or remove the damper. The testing was done as you stated with hood in tact, looking up thru the fan. Thanks for the info, I since sold that home and currently looking to install a hood in current home. Feel better armed with more helpful info!
working on my own home, and want things done right! Extremely helpful!
Excellent demonstration ! You should list your web site so we can purchase are range hood. Also installation video will be helpful keep up the good work God Bless!!
That was so informative
Like the product information
Will definitely be looking to purchase your product Thanks
Very good explanation. You speak very well and clear, too.
Terrific video with lots of really helpful information.
Very helpful information video. Thank you for all of the great tips!
Thank you, very informative and useful information.
Very easy to understand why to use the right size ducts save me a bunch of mess ups
What if the range hood adapter is smaller than the existing kitchen ducting?
Okay, not the video I was searching for. Buy, very informative and interesting... Thanks for the great detail.
Excellent presentation/demo. I'm about to install a range hood with 3.25x10 rectangular opening with an adpter to use a 6" round opening. Will using the adapter cause a lot of degradation in performance? Also, the cieling opening is a 5.75 square hole. Can you please let me know if I should go a head with this type of installation? Thank you very much.
Great advice. Thanks Erik.
So informative. Thank you!
Very informative, Very good info. Very good Instructor. Great job
I live in the midwest where we regularly get cold winters. Is it necessary to insulate the duct work running through the attic and out the roof as to prevent condensation?
In California we do not have this requirement.Building codes can vary depending on your region and I recommend reaching out to a local inspector to determine your cities requirements
What trade does these installations?
@@coreyk01 i would recommend researching the distributors in your region of the country for the ventilation hood brand you plan to purchasing. Ask them if they have any installers they recommend.
Pl advise best software or manuals
Round / circular process duct calculation including, Expansion joint, Stiffner, development, pressure drop, Load calculation on each support
Excellent video, very detailed and informative. Thank You
Hey Eric, I know you stated you don’t like spring-loaded backdraft dampers because they create a negative pressure. But the gravity dampers make a terrible racket with wind and provide insufficient backdraft reduction. Do you use / know of any inline backdraft dampers that are ideal? I’ve read mixed reviews on Tamarack’s inline cape backdraft damper. I really don’t want the noise of a steel damper hitting in the wind.
I have had customers add a gasket strip to there backdraft door to dampen any opening and closing sounds/. I do not have any experience with inline dampers, good or bad. If you do put in a section of ducting that includes dampers I would place it in the attic where it can be accessed . Once the backdraft dampers have years of grease on them they stop opening and closing as well. I would want to be able to access it to service the parts and dampers if you choose that system .
Great video and thanks for sharing .
Great information! Just built a home where it's windy. We installed Zephyr double motor/fan vent hood. We hear mega volume of wind blowing through the ducting and stressing me out. We have been experimenting with candy cane venting and wind caps to resolve impact of the wind. Any thoughts and or suggestions?
You can find roof caps with gravity closing dampers. I know vent a hood makes them. I would suggest a cap with a closing damper in this scenario
Wow very informative video. Great Job!
Thanks for the very detailed video. Very helpful!
Fantastic demo.
My range hood is 7 inches! No gravity opening plastic flaps. Can I find reducers to connect to a smaller vent pipe?
although we dont recommend using reducers they can be found on the web from various suppliers. home depot will likely carry a variety of them as well
good video actually, very informative, compared to other youtube videos here.
Great information. My vent a hood vents out the wall and is allowing cold air into my home. Any suggestions?
Vent a hoods have internal flaps, and flaps on the wall louver. Unless there are heavy winds blowing the flaps open the cold air should be limited. You could tape a small weight to your flap if the wind is blowing it open.
Great video. If I need to vent right out the exterior wall with 8' ceilings and my hood has a 6" exhaust. Can I use 6" to 8" duct "enlarger" and then use your 8" backvent elbow? I think I would have room for both pieces.
You can always increase the diameter of the pipe without effecting performance. You can use a 6 to 8 inch enlarger.
nice job Erik
I’m curious on how to vent a range that butts up against and interior wall with a second floor above. If I vent my range the standard way, it would put the vent in the garage. Do I have to run duct work in the garage out the back or is the other options?
I understand that going through the second floor is not an option. In this scenario Id be looking at venting through the garage to an outside wall. Or you would be need to consider the re-circulation
hood options
Hi Eric, I had the exiting 7" duct pipe in the wall , my new range hood come with 6", can I able to use the reducer from 6" out to 7". Thank for the great video
Its ok to go larger with the pipe size
With the solid duct, can it be vented through the side of the house instead of the roof?
Yes. You can always duct through the side of a house as oppose to a roof. It’s much easier when The hood in installed on a wall that backs up to the outside ( as oppose to a a wall that’s in the middle of a home ).
Really an outstanding sharing of your expertise. Thanks very much.
A question of expertise on elbows: suppose you had a question of running 3 feet up to an elbow and then 4 feet out to an outside wall versus seven feet straight up to a roof exit, how much restriction to flow do you suppose the elbow would give to the first seven-foot run over the second elbow-less seven-foot run?
The unit is rated to make a turn in the duct pipe without impacting its power rating,. You will only get into an issue running to many elbows back to back . The unit may run slightly quieter with a straight duct run. This would be the onlt difference between those two scenraios
Bobby Gerber Oh, super, that settles my installation. Your presentation and kind response have been enormously helpful. Thanks again.
Great video thank you. But most of these videos all seem to miss one major important thing. And that is insulation from outside temperature. Here in Alberta Canada, like many other parts of the world suffer temps down to minus 40C Vent pipelines for clothes dryers and other vents all ice up if not insulated. With many homes still having only 4” thick outer walls that cold will easily follow the vent piping into the home. So could you address, and show us how to properly insulate a wall outlet style vent all the way back to the hood connection in a chimney style range hood. Thank you. 🍻
PS: Just remembered another thing and that is makeup air supply for the higher cfm hoods. 👍
A lot of good tips here!
What do you think about mounting the fan inline motor directly below with no elbow untill after motor pipe is 125mm long vertical exhaust 1.5 floors, straight out the flat roof?
The vent a hood system has a patented internal blower and it sits inside the blower housing to cause the grease to liquefy in the blower housing. For this reason we dont offer any inline motors for other product brands. I would recommend calling the manufacturer of the hood purchased to determine what blower options can be used.
Eric, thanks for doing this video; a lot of great information and you talked me right out of doing it myself. I could, but I'm short on time and I'd rather have someone like yourself do it who knows much better than what they're doing. What kind of contractor should I search for who can do this level of work? An HVAC company, or appliance installation or what? Not sure what to look for. Thanks again!
I would call the distributor of the product in your region of the country and ask them for a list of recommended installers . For a list of vent a hood distributors click here www.ventahood.com/index.php/support/parts-service they will likely have a list of appliance installers servicing your state
So if I remove the damper flap, I should be able to run the smaller pipe? Just kidding, installing a 3 fan vent-a-hood this weekend. Utilizing VAH 8" & 6" into one 10". Gonna cap with 10" Air King cap. Should blow my cooking aromas at the neighbors! Thanks for the info!
Scott
How about the direction of the duct work in relation to the smaller end(male end) vs big end(female end) of the piping. Considering the direction of airflow, would it hurt anything if the pipe coming from your range is fitting around the outside of the following pipe as opposed to fitting inside? I was doing my ductwork for my range hood and started working from the roof cap, on down to the range. I used a connector underneath my roof cap prior to installation to make it easier to connect the ductwork, but the connector had the smaller corrugated end on both sides which had me working backwards so to speak. So starting at the roof cap, everything fits INTO the next piece of ductwork working down to the range as opposed to fitting OUTSIDE of eachother. Was curious if this is enough to disrupt airflow to a noticeable degree or not.
I go into more detail about the collar direction in this video ruclips.net/video/a9YJ1cYddVQ/видео.html basically just creates little air pockets that can make the hood sound a bit louder . You can always go back with high heat metal tape and tape around each joint from the inside smoothing those air pockets so they dont make noise .
I am looking at changing kitchen....our vent goes outside, to side, not up. we are getting a bigger range so to centre all we need to MOVE the vent over a few inches. Is this possible?
Every home installation is different. There is a good chance your contractor will need to begin cutting holes in the wall to determine if movement of the pipe is possible
Erik Bergstorm -- where can I find the well cap you used as an example in the video --- non spring loaded -- but, most of all I like the square access cut but still use round piping
you will find that at ventahoodparts.com
@@erikbergstrom451 - -thank you - thank you sir for the info and very quick reply .
Very well explained
I had my roofer install an 8” exhaust vent “hood” in my roof when I was having a new roof installed few months ago & planned to use a Viking island hood that was 8” exhaust. Long story made short, the Viking hood itself was too large for the area where I need to install & I picked up a different hood that is 6” fitted. Is there any problem with me running the 6” pipe up to the vent cap and put a reducer on to actually make the 6” pipe now fit the 8” vent installed in my roof? I’m not really “reducing” air flow…would actually be making it 2” bigger right before exiting the roof by going from 6” to the 8”
You can always enlarge the pipe from 6 to 8 inch with no repercussions. Going bigger with the pipe will be no issue
I have a question? For connecting the vent hood to the microwave just foil tape?
You can use foil tape to connect a vent pipe to a microwave style hood.
@@erikbergstrom451 Thank you. I just thought there would be more than tape holding it together.
If we go vent less will the range nutone mantra lose power from the cfm?
For this question I recommend reaching out to the nutone distributor www.graybar.com/store/en/gb/cm/manufacturers/broan-nutone
I want to clarify that we caution against square pipe when hard turns are used that impact the speed of the exhausting air. The manufacturer does make a venting transition model number vp561 that can be used to convert the 8 inch round to a 6 by 8 1/2 inch square using a gradient 45 degree angle. When using this transition it will turn the air very quickly and this can increase the overall sound volume of moving air in my experience. The fewer turns made in the duct run keeps the sound of moving air to a minimum. The duct pipe can be converted to square when space is limited and if this conversion is required, we would like to see a gradient turn as oppose to a hard 90.
+erik bergstrom Great video. Near the start of the video you mention "circumference " when I think you meant the "area" of the 8 inch duct should not be reduced ( Pi R squared) As apposed to 2 Pi R)
Great video. Things like this make me want to buy your products over your competitors. Are they made in America?
+The Barcode Guy Hello and thanks for writing, Vent a hood is manufactured in Richardson Texas
Hi Erik...when you say "five feet" at 2:37, do you mean exactly or minimum or maximum length? Thanks!
The manufacturer recommends a minimum of five feet of straight pipe before a second 90 degree turn is used in the duct run
Thanks, Erik!
0:53 how do you keep the critters out? Also, where do you buy something like that?
I would look in google for your closest sheet metal fabricator . They make up these types of roof caps. Then I’d use chicken wire over the opening. Something that doesn’t cause too much resistance for the exhausting air
@@erikbergstrom451 Erik, thanks for the reply. I saw the chicken wire idea in another of your videos. I’m planning an outdoor hood for my 32” grill, located in a covered lanai and vent it through the roof, looking at 900-1200 CFM. Your videos are the most “to the point” I’ve come across. Thanks!
@@MuzixMaker what width do you need for the outside unit
@@erikbergstrom451 36”
i have been looking to purchase the hood cap that you recommended, were can i buy it
I would google for a sheet metal fabricator in your area, and call those leads to determine who has these parts in stock. if they don't have an item in stack they can make the item/ HVAC installers typically buy all there ductwork from these fabricators.
Great video really explained everything I needed to know for my install of my new vent
A good explanation Erik. I have a different situation though and hope you can help. My gas stove is on an interior wall. I am currently using a microwave venting inside. It is too loud and does not have enough speed selections. Is it possible to switch over to a vent hood and run the ducting down the interior wall and under the kitchen floor and use a remote vent fan in the basement and then vent it through an exterior wall about three to four feet off the ground. They would only be two 90 degree articulating elbows and there would be about 7 feet between the elbows. Can this be done and Is that legal? Any information/assistance you can provide would be greatly appreciated.
Thank you for doing a detailed video with way more information than any other video I’ve seen. Thanks.
Ron
Hello, The products I sell are not designed to be vented downward. There are products on the market such as downdraft systems that where created to exhaust air downward. Elica Aspire Series ERS636S1, You should know that these systems would not outperform having a canopy above your stove with a duct to the exterior wall. For some situations its the best option depending on limitation in the home to duct upward . PM me for information on reaching a rep for Elica
I learned a lot from this video but wouldn’t regular duct tape break down over time Or are both of them rolls metal tape ?
Very helpful and informative. Thank you.
With the flexible pipe , you can bend it and create a cold air trap to the outside. With straight rigid pipe you can not. Just curious if you ever used cold air traps, or if there is one made for rigid pipes. Thanks.
thank you for sharing your knowledge
What CFM is recommended for a 30" stove top gas range
you will want to look at the Manuel that came with your stove top to determine its btu heat output. you need at least 100 CFM for every 10,000 BTUs of heat rising from the cooking equipment. See the output of each burner. Most households are cooking on only 2-3 burners simultaneous, in addition most of those butrners are only at 30 percent power. By doing the math you can get an idea of how much power you will need. Most will go with at least 600 cfm of power
What gauge duct pipe should I be using for kitchen exhaust?
Depending on the brand of duct pipe you purchase it can range between 22-30 gauge. There is no standard in the industry for gauge, and it has not been a criteria for home inspectors .
Very informative video and appreciated. What is the name of the duct you are holding at 4:13 in the video? I need one like that to get past a truss for my range hood exhaust. Thank you.
+Riptide 10x eight in diameter adjustable elbow. www.alpinehomeair.com/viewproduct.cfm?productID=453065456&linkfrom=froogle&gclid=Cj0KEQiA3t-2BRCKivi-suDY24gBEiQAX1wiXGmx5BT88MP7UNFdTMoB3GrIi9Ir7HCk2nI4d2ACdz0aAtAB8P8HAQ
+erik bergstrom Thanks Eric, I got lucky and found one at Home Depot.
Thank you for the video. We just finished installing a blue start range hood and used flex pipe. This was a very difficult installation and the pipe bend on one side just a little. The ventilation is very good but I was just wondering if having the small bent on the pipe is a big deal; It bend because once compressed, the wall is double with a big space in between and the pipe goes in an angle from the inside hole to the outside hole. I can hear the difference in speeds but in reality I would like to make sure it is perfectly installed. Any advised?
In many areas, Including California , its against code. many installer will use it since its easier then getting a flat wall custom transition made. In very short lengths it wont hurt your performance unless the pipe is doing back to back 90 degree turns. It tends to make the sound of the moving air louder,.. These are the only drawbacks I know of
I'm in Florida, our storms would prevent me from using the high flow roof cap as our rain can sometimes come in vertically from any side. What would i use?
The manufacturer makes roof caps with closing dampers
You can find them at ventahoodparts.com
I have a current square duct installed through the roof but bought a hood that takes a round one. Doing a complete kitchen remodel. I also need to move it 3 feet to the right. Do you sell conversion kits? What’s the best way to do this?
This is great information! The previous owner of my home installed a microwave above my range that recirculates the air though the kitchen/house...HATE IT. I do not see any duct work, but I want to get a REAL exhaust system. Any recommendations on where I should start? Thanks so much!
stores.ebay.com/Kitchen-Foundry
Thanks, Eric!
Perhaps our situation is not so unique. I haven’t found any information online similar to our project. We are rehabbing a 100 yr old house and decided to update the kitchen. The house at 1330 sq ft has been a fun challenge. We decided to install the gas cooktop right next to its original fireplace chimney. The cabinet above the stove will house the blower. I don’t think we need a hood since we have the cabinet. What vent should we start looking at? And how can we install the most efficient, safe and cost effective way possible. There will 2 right angles - one from vent to fireplace then another to final duct to roof.
Or should we just install one and use chimney as duct?
Hello - it sounds like a very challenging rehab. Its hard to get a perfect visual based on this message. There are a few suggestions I can send your way. In los angeles county california and surrounding regions where I live, it is against fire code to vent a cootop into a chimney. For this reason it doesnt pass code from the city inspector, and if they house burned down from a related issue your homeowners insurance likely not cover the damage. I would check with the city inspector in your region to determine if there is any acceptable safe way to go about this. Here is california we are unable. The cabinet above your cooktop should have a metal hood liner inserted inside. If its a wooden cabinet with a blower inside that would would be susceptible to damage from the heat a cooktop generates and would not pass code . Custom vent a hood liners can be fabricated to fit the cabinet above your cooktop/ Contact your vent a hood distributor for instructions on how to get a site servey that involves a sales rep coming to your home and drawing up a quote for a vent a hood line to fit in your existing cabinet/. www.ventahood.com/index.php/support/parts-service
great info and showroom. i was wondering who makes that hoodvent behind you in the left corner
Vent a hood is the manufacturer of the hood
i couldnt find it on the website. do you know the model
do you happen to have the model
The hood with a strip of brass is completely custom by vent a hood .I have no model number I can quote
what can be done if you cant vent the hood is there another way
There are recirculating hoods available from vent a hood, they are called ars systems send us an email with the size needed and we can check availability
synergy451@yahoo.com
Thanks for the great video. I am just wondering, can you use the same exhaust venting from an existing range hood to be used by another range hood. Current one has CFM of 720 and the new one has a max CFM of 340.
You can always go larger with the exhaust vent. If the new hood required
a smaller vent pipe you should replace the pipe and go with the pipe
size recommended by the manufacture.
Oh... what I meant was the 340 cfm will be sharing with the 720 cfm instead of installing a completely separate venting system. We were thinking of installing a Y connector where the two ranges will eventually meet to exhaust outside. Thanks again!
There are issues you would run into. Without a backdraft damper you will get exhaust coming back through to the unused hood. You would never be able to run them simultaneous without the exhaust streams fighting each other causing vibration, excessive sound, and backpressure.
For a commercial kitchen is it better to vent through the wall or roof? We are installing a kitchen in a 100 yr old building and my partner has concerns about going through the roof with regard to liability since we are leasing the space. The company installing the hood wants to go through the roof.
Going through the roof generally makes the hood quieter, since the air isn't making a hard turn the sound of the air movement is minimal. Other then that benefit there are no other advantages other then cost and the trouble of getting the permit for the roof cap ( if applicable )
Great video but I have a question. You mentioned that when there is a restriction that you can't hear the difference between low and high speeds. Is this correct?
There are many factors that can cause this issue/. A severe restriction would cause this and also a stuck flap. Please see my video ruclips.net/video/tw8QEjewlSU/видео.html
@@erikbergstrom451 Thanks for quick reply.
hi, I'm having a problem. when range hood fan is on. the smell appears in other parts of the house. I check for leaks in the duct going outside thru the wall and it's sealed. have come across this before? there's a 4" round duct install now. should've I used 6"?
+walter amaral I have over the years services many older hoods that experienced leaks inside the walls. Most of these installs where 40 years old or older. Duct tape can break down after that much time has passed. Its hard to see the exterior of the pipe joints to determine if they where properly taped. It may be time to reinstall the duct. You will need someone that can handle drywall patches of you are in between floors.
+erik bergstrom I found the problem this past weekend. there was a false sealing installed in the kitchen when it was remodeled before we bought the home. the duct was leaking cooking oders into the void between the new and old ceiling and had nowhere to go but up into the other rooms in the house. thanks for your reply.
Can upvc pipes and elbows be used in lieu of metal ducting which requires skilled fabrication....?
Yes. just be sure they are not flexible or corrugated as they will create turbulence and also back pressure
I just installed a 42in vent a hood dual blower. I have a straight run through my attic to the roof, but I was going to put in a reducer to go from 8in, to 6in. This does not hit the flaps, but will it really effect the performance going from 8in to 6?
The answer is yes. For additional over the phone assistance on this issue feel free to contact the distributor that handles the region of the country that shipped your item. They are your warranty and support for the hood you bought. They would much rather offer assistance over the phone as oppose to getting a call about warranty on the product if it doesn't perform to your needs,. Here is a list of all the product distributors . One of these companies is in charge of your warranty depending on where you purchased the item from www.ventahood.com/index.php/support/parts-service
Great info Eric! I’ve just installed a new 1200 cfm vent hood that has a 10 inch outlet, and want to find a roof exhaust that will fit. I don’t want to reduce down to 8 inch, but finding a 10 inch is proving difficult. I’ve looked locally for a T-Top and can’t find one. Do you have a source you trust?
The brand vent a hood makes a ten inch outlet, its available at ventahoodparts.com you can also call the manufacturer of your hood and inquire if the make a roof cap. In the case of the t top, you'd be going to a sheet metal fabrication company. These types opf supplier make vent pipe for hvac guys and will make up products from sheet metal such as the t top - they would also make the flange of the roof cap match the pitch of your roof
Is it true that the cabinet that has the hose installed in it cannot be used since it will get too hot?
We have hoods that designed specifically to be installed inside a cabinet. They are called liners. Its very common. Here is a link to the liners I have available
www.kitchenfoundry.com/vent-a-hood-wall-mount-liners.html
I could not open the link. So is it true, it overheats to have a fan under your cabinet that is set up to put the fumes out of your house?
Best advice is to call the manufacturer that makes the hood you are planning to install and they can advise you if its safe inside a cabinet
I just bought a professional hood with a 10inch round neck... the problem is that my actual exaust is a 3.5inch x 10inch rectangular and its not centered with the new display. What should i do?
people run into this all the time. If the standard transitions offered by the manufacturer of the hood cant get the job done. You need to draw the transition onto a piece of paper including the exact height and offset along with rectangle dimensions. Then bring this drawing to a local sheet metal supplier HVAC supplier and have the transition custom made. they can make almost anything you can draw. Get your installer involved since they have most likely done this before. Local sheet metal companies make roof caps, wall caps, and transitions all the time
I have a question which is more related to using the hood kitchen. Does it help to open the window if the hood is really strong? Or this will actually decrease its performance? Thank you!
Many of the homes being built today are airtight and they require make up air systems ( SIMILAR TO OPENING A WINDOW ) For this reason it will not negatively effect the performance of your hood if you open a window
Bobby Gerber Thanks a lot for your answer!
Can I vent a bathroom exhaust fan and a microwave range hood out the same roof vent opening. I dont want to cut another hole in my new roof.
If both units are not in operation simultaneously it would not impact the performance