FIX Hot and Cold Spots in Your House, For Forced Air Systems Only
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- Опубликовано: 30 сен 2024
- If you have hot or cold spots in your house, this short video shows the typical problems and the right way to balance your air conditioning system to you will have less hot and cold spots. Shown in this video is how to balance or control the amount of air supplied to each room by adjusting the duct dampers that are installed on the supply air ducts and not the dampers on the air vents. Generally balancing your home costs nothing and can dramatically improve your quality of life. The process here will only work for a forced air system.
DUDE! The damper junction point-out ALONE makes this video worth sending you a fiver! God BLESS you XD
Glad I could help
Purchased: August 2023 - still works GREAT!I ruclips.net/user/postUgkxxsUnXhGsSJLim_XnMHyQK0u3XVaW-CGn live in a studio and during the summer it gets scorching hot - really old building with no ac units. I can’t express how EASY it was to install. This unit has been a life savior during the summer and some days during other seasons where it can still be a bit warm at night. In this small place is my friend, a husky, poodle mix and myself. We need AC - lolI don’t use the dehumidifier option - I’m not sure if it will leak in my house, since I did not install the small draining hose that came with it. May look into it late but I don’t worry about much humidity in the apartment. I don’t understand why the negative reviews since all things mentioned, I personally did not find issues with. Definitely worth it!
That’s really interesting! I wonder if my house has those dampers, considering these builders barely did anything right. I’ll have to go poke around in the attic as well.
Great video, thank you for posting. I am currently on phase three of correcting the poor building that was done on my home. First was installing more insulation in my attic (they actually put loose fill over garbage to make it look more than it actually was), second was reinsulating the wall space between my garage and bedroom floor, was cold for 3 ft from the wall during winter, now phase 3 is redoing ductwork but your balancing tip is well needed and will definitely do so.
I hear you, of all the houses I've owned, at least one vent was covered with something--i'm not sure who to blame, the builder or the inspector. Glad I could help.
Well, very informative video but my home has NO dampers. It was built in 2002 in Florida and is 3500 sq. ft. living area. I suspect that depending on where you live and the local codes that you may, or more likely, MAY NOT, have dampers installed.
I am very savvy regarding HVAC as evidenced by my videos. I can only say that I wish I had dampers, but alas I don't. The most common way of alleviating imbalances in a home is to mitigate pressure imbalances from room to room. That's done by adjusting the return air that's routed back to the HVAC unit. There are many videos showing how to do that. The usual remedy is either to add a return to a room, or rooms or add 'in door' return grills. The problems with temperature imbalances is almost always in the return side of the system and not the supply side.
Once you've got the pressure return balances mitigated then you can go about using your REGISTERS as a throttling mechanism to do what Kris has done using the dampers. Almost all ceiling or floor registers have one, or sometimes more, levers that allow you to open, or close off, the register to some degree to control airflow into the room. This is the same as using a damper. It does exactly the same thing and possibly better because if you have multiple registers in one room and you have an area that's say colder than other areas of the room you can fine tune the room to your liking by using localized registers.
I have lived in several places in my lifetime and this is the first time I've heard of them installed. I've lived in the following states: New York; Illinois; San Diego, California; Alameda, California; Chesapeake, Virginia; and a few places I no longer recall. Never did I have a home with dampers installed in the ductwork.
I thought it was not good to close off a register? I will try your method as long as it's not bad for the unit.
Great idea, never knew about these
Seems like an easy fix. My AC unit won't kick off once it reaches the desired temperature. Often, it struggles especially when temps go above 85 degrees. I live on the second floor in a condo so my unit is in the attic. I've been up there to look at things and I didn't find the dampers. I saw in another video that you might have to feel around for them or even make a slight tear in the duct work to get to them. I'm afraid that there won't be any dampers due to this being an old building. I'll report back with the results.
What about Ceiling
Awesome information. Thanks
For the rooms on the 2nd floor do I have to get in the attic? And the main floor ducts in the basement? Thank you.
Not sure, where are your air vents on floor 2? if in the ceiling, i'm guessing you will need to go up in the attic. for the 1st floor, if your vents are in the floor, most likely you will need to go into the basement.
Kris Kasprzak the registers are on the floor for the 2nd floor.
I'm guessing you have the main duct in the ceiling of the first floor, getting to the dampers may be a challenge,
Kris Kasprzak ok thank you so much
Man I have to thank you so much for this video, I thought there was something wrong with the air duct or some how kinda clogged not allowing much air. The other rooms upstairs the air was wide open and blowing strong except the master bedroom, master bathroom & closet. I tried closing other vents to redirect the air flow but nothing. I'm kinda familiar with how the ducts are run and came on RUclips for instructional videos and your was the second one i saw. I was about to go to Home Depot and buy the equipment to add 2 extra vents on the master bedroom to help it cool down. I never knew about the levers until this video. After watching this I went right to my attic where the ducts are near the furnace and found the dampers, adjusting levers that was wrapped in orange string hanging down. I never know what they were until now. There are 2 giant ducts leading to smaller ducts branched out. Right at the beginning of the duct were the lever aimed in a diagonal angle upwards, I turned them completely horizontal and success, strong blowing air!! I'm so happy and thankful for this video, you saved me money 💰!!!!
How did you turn a "diagonal angle upwards" to a "horizontal?"
This is like looking for a jewery.
Thank you for this video!! I'm 71 years old and your video solved my problem. One of my rooms was almost 10 degrees colder in the winter and very hot in the summer. I didn't think anything inexpensive would solve it. I hated to call a repair service and pay a fortune. Your video worked!! I had no dampers on any of my vents. I used other videos and installed four dampers and the heat and AC in each room are balanced within 1 or 2 degrees of each other. Yes, I had to crawl through my "crawlspace", but your video inspired me and convinced me this was the answer. Total cost: $29!! Thanks buddy.
Glad I could help, and glad you got your HVAC fixed and 1-2 deg delta sure feels good when you are walking around the house
Dang....I wish all “explanatory” videos on here were done as well as this one! Not a single wasted word or video clip, and made it so simple to grasp, even for someone with significant ADD! Thanks for your efforts!
Glad I could help.
This is the greatest RUclips video ever. I fixed two separate vents that had no airflow. I can’t believe it was this easy. Thank you a million
Glad I could help.
Wow! Look at all the comments from homeowners whose contractors charged them while doing zero with the shut offs. If they weren’t licensed, shame on the homeowners. If they were licensed, shame on the contractors. And as for soft ducting - I don’t EVEN want to get into what a disaster that can be.
I didn't even see the dampers until I watched your video. Now I see that there are dampers in 70% of the ducts in my basement and the previous home owner labelled each one clearly. I managed to adjust all of them. Looking forward to a much more balanced air flow. Thanks so much.
Glad I could help and hope your house gets nice even temps. It may take a few adjustments and time for the temperatures to stabilize.
Fareena Alam did it work?
Help I have an above the tub airhandler/coil where is my trunk line? I have flexible ducts in my attic. 1984 townhome which is too cold downstairs/ warmer upstairs. The summer is ok. Winter is too cold downstairs
Most builders don’t give a fuck about air balancing. This is the problem I have now.
Thanks Man . I found the dampers and it was totally closed to one side of the house. Once I opened it. Every thing fixed and heat went out to all the house again. Your video is estremely helpfull
Amazing -- this makes total sense -- I have been asking the guys who installed and service our furnace/AC for years and they never once recommended this.
Thank you for the informative video. I had 2 AC companies come by and inspect and no one mentioned this. The best thing is I can fix it for free. I pull air only from 2 rooms now I plan on correcting this. Thanks again!!! Dan Winter Garden FL
Thank you so much I have owned my house for 6 months and have not been able to get good air flow....until today.
Your're very welcome.
Thanks for this, your drawing was extremely useful and your explanations were excellent! Much appreciated! I was going to buy a couple boosters but didn't want to use electricity and this will be much more effective!
Glad I could help
Thanks Kris for the video highlighting design vs actual and fix. Awesome
Glad I could help.
*Saw this video. Was excited to find a solution to my problem. Soon as I got home i rushed to my attic to adjust my dampeners....only to find out i don't have dampeners and im SOL.*
You're not the only one. I had a HVAC company quote me $130, so I'm leaning towards letting them install one.
Excellent video. I learned a lot. The camera was good, you are obviously very knowledgeable, and there was no annoying music accompanying the video. A Plus job!!!
Very, very good video! One end of my home is 5°+ colder/ hotter than the rest. Due to limited or no access to those ducts supplying that end of the house I’ll first install dampers on the others. Hopefully that will resolve the issue. If not, I’ll be removing some ceilings for access. 😕
Thank you!
@kris. Can you send a link to the product you’re using to measure the temp of each room
I just use basic thermometers from the local hardware store. I did initially put them next to each other, to make sure they were all reporting the same values.
I learned about dampers awhile back and adjusted the ones for the rooms that were lacking air but I never thought about the balance between all the house vents. I’ll try that before getting one of those inline fans.
Oh thank you. I was closing vents as well. I called someone to check out why my daughters room stayed so hot in the summer and cold in the winter and they just checked the AC unit outside, charged me $150 and left. Definitely going to try this, thank you
Any update? Did this video help your situation?
My issue was the restrictive filters(not dirty). I resolved it by replacing the filters with ones with a lower MERV rating. It was like NIGHT AND DAY. The thermostat now always reaches the set temp during the very hot summer. I have in slab ducts, so I don't really have the option to add in-line dampers. I used to shove towels in the floor registers to keep air from coming out of the specific ducts.
See my other videos on how to replace your 1 inch filters with four inch filters …makes a huge difference as well.
I am a certified HVAC contractor with over a decade of experience. While I do find this video educational and informative I do believe that this video doesn’t talk about return air problems and in my opinion return air deficiency/luck of return air is the major issue with residential construction. I can safely say that ~95% of residential properties don’t have enough return air ducts and for 2 stories houses it is a case of 100% deficiency. During construction people use inside of drywall space as a return duct/pathway. Standard space between two studs can route ~100-120 CFM of air.... so, if your house has 5 ton system , your house should have 23-27 of these returns........ now, go ahead and count how many inside of drywall return your house has. You are lucky if your A/C unit gets more than 30% from what it designed to have. What does it mean?...... It means that ~50-60% of your electric bill goes to....... goes to..... utility company for nothing!
So, look for a HVAC contractor that is able to do simple math and can calculate air flow correctly. You will be glad to see your electric bill after when air flow will be improved. I can help you with this issue if your house is in greater Memphis area.
Ed I need ya!! I’m in Memphis area and I am about to try this method!
Four 1 two six 7 3 two
I think the "pro's" need to watch your video and explanation. Very clear and concise. Just the explanation I was seeking. THX
Glad I could help!
Excellent video! Thanks. My home was built in the 70s so I think I will probably have to add dampers to my system. The HVAC is new but I doubt dampers were every added.
Glad I could help.
Thank you for this video! So easy to understand! I will get my husband to do this because one of the rooms it's usually hot, while the other 2 are supper cold.
Glad it was helpful!
In my area unless you as owner specify dampers there will not be any because the contractors won't spent the money for dampers. It increase cost of job and they don't explain the cost benefits to homeowner.
Good to know. I'm in the south and so far they have been pretty common--not sure if it a code thing though.
I can’t believe it was so difficult to find a video properly explaining this. Thank you so much!
I went to my attic to check the air-leaking and I wanted to replace the entire air-ducts. I found one "triangle duct box connections" with branched out about five lines. This is too many lines mounted on one small triangle duct box. Should I separate them?
Thank you, best demonstration and solution to our irregular hot/cold rooms.
I'm actually trying NOT to have even balancing lol. I have three bedrooms and a huge "kitchen/dining/living" space, so basically 3 small and one huge room. I only use the big main living area and a single bedroom. I want 90% of the air to go there. The other two rooms can just be whatever they naturally land at. I'm never in them. Doors shut.
You lost me at "When an engineer" my house was built in the 1910s 🖐high five if you're in the same situation, one room is SCALDING hot (80 degrees) and the other 2 rooms in your tiny home are 60 or 70 despite also having heat registers that are running. Curse old heating solutions (heated water through a pipe)
I increased airflow to two upstairs rooms with your help. Now they will be warm in winter and cool in summer. The previous owner must have shut down the other two rooms to save energy. I cracked open the damper and air is flowing full and warm.
What year was your house built? Wondering if this is something common even on older homes.
Hay thanks for this valuable information. Had 4 office vents in my warehouse that the air waa coming out so so faintly. I we in the attic and followed your ez instructions and now i understand what balance is. It helped and make a significant difference in air flow. Never went to hvac school but your instructio s are too legit to quit mc hammer hammer time. 🔨 thanks
I am going to try this!! We just bought a house built in the late 1800's and our upstairs is 10-15 degrees colder while it is a heat wave downstairs.. the vents do not blow hard upstairs, there also are not any in take vents upstairs. Winter is coming and we do not need our babies freezing at night!!
Looks like an easy fix with less talking. Thanks again.
No problem 👍
Thank you SO much! I was considering replacing the entire duct system.
Glad I could help!
@@KrisKasprzak Rock on!
Me too
Hopefully technology will improve where these dampers can be controlled remotely. Once a house is built if there are different levels its hard to get inside walls
Great help thank you im going to go find the dampers .. because all the cold stays in the basement
Thanks for the info! My HVAC company told me there was no way to close off part of the ducts to limit air flow. I knew that must be false and I was right! Time to fire my HVAC company.
They were basically too lazy to go do it.
Kris, great video! The engineers only seem to look at the size of the room and NOT at how far away it is from the fan that "forces" the air through the system. Your schematic at 1:39 illustrates this as the room size is only variable, not the distance from the fan. I have the same problem in both my main house and a vacation property. Thanks so much!
Glad I could help.
Thank you for making this video. The visual aids and explanations were extremely helpful in helping me better understand this problem. Your explanation and showing how to adjust the dampers was extremely informative. This video might be 9 yrs. old, butter the information you provided is very relevant today. Thank you very much.😊👍👍👍
glad I could help.
Thank you so much
You're most welcome
What if hardly any air gets to the room on the 2nd floor from furnace located in basement?
Do Texas houses have duct dampers installed? I've never seen one.
I'm crying after 20 years of putting up with it all.
I hear you. Almost every house I've owned, has the kitchen vent covered up with cabinets, and at least one closet vent covered with carpet.
WOW! This is what I was looking for! TY!
man this video saved me for 2 years in my house I had a room burning up air /heat barely blown through the vent , thanks
Could it be possible that my duct work doesnt have dampers?
I went to the attic and inspect it to no avail.
The issue Inis not airflow though. Air comes out strong in this particular room, but too warm, compared to other rooms.
Yes it's very possible you don't have dampers. Depending on how bad you want to fix it they're fairly easy to install cost about 10 bucks a piece at Lowe's or Home Depot
This video is very helpful! Thanks
In terms performance, what's the difference between adjusting the dampers as oppossed to the floor/wall registers? Seems like it would effectively accomplish the same thing?
As I mentioned, in the video, you can control airflow by adjusting it at the register however, most likely you’re going to get a very goofy pattern, and possibly some whistling or hissing from the vent
Pure gold! Thank you!
Glad you enjoyed it!
Bummer. In my attic all branch pipes have no damper installed. The ducts don't look like in this video. No aluminum foil, on dark grey color plastic. And in basement, all duct tunnels are box shaped.
I am out of luck.
The house was built in year 1999.
I’m not so sure about that just yet. What shape are the ducks in your attic are they at least around? If so I’m sure a damper could be installed. And there are some tricks that could be done in the rectangle ducks in the basement.
What is really fun is when the home owners remodel rooms and eliminate ducts, just because they wanted to knock out a wall. Then you don't have any heat running to a room.
My personal favorite is when the kitchen cabinet installers ignore the floor vent underneath.
this was phenomenal, thank you! i wasted time and money with an ac guy who only just said i need a return (then i pointed out i have one) or that it was my insulation. he never really checked the ducts at all let alone an adjustment like this. SO, now i have something i can look at for this. (the other company i had out didn't do this either but at least they had some other ideas vs SHRUG or telling me it's normal to always have this issue and basically live with it.)
Glad I could help.
Went looking for these and realized my duct work was duck taped and falling apart 😫
yikes. Good catch.
Hi I found my handles but I can’t tell which way is open. My upstairs is too cold
the handle is parallel to the blade, and for full open it wont matter which way the handle is pointing, just as long as it is inline with the duct. Same for closed, if the handle is perpendicular to the direction of the duct (either direction).
Yes, this makes sense. I actually have dampers on all 7 of my first floor ducts but none on my 3 upstairs ducts. I will restrict to 60% on my main rooms to hopefully force air to upstairs
Heat rises, so you may not get the upstairs fully balanced.
Did it work for u. I'm having issue with my upstairs big difference
Gameroom is blowing air like a furnace in your face, but the 2nd master next has no hot air coming from the vent. It’s a new build too. Any advice?
Could be a variety of things from unconnected duct, to lack of balancing. If its new construction get the contractor back out there and don't let him leave until it's fixed. Be nice but assertive.
I have an issue in my townhouse where the 3rd level gets all the air flow and the 2nd and ground levels get almost none. I have no basement so I don't see where any of this duct work is. There are just a couple dampers by the furnace but i've played with them and none of them seem to let any more air into the problem areas. This video was informative but unfortunately will not help everyone with air flow problems.
I have the same issue. You ever solved the problem?
This video shows what I have been looking for with RUclips videos. None of the others meet my situation. Thank you!
Glad I could help
Fantastically useful. I bought my funky 70s house 3 years ago in a place that has all four seasons - a brand new experience for me and my family. It has 4 levels and the airflow is a huge issue. Every winter we have roasted upstairs and worn sweaters in the lower levels. In summer, the opposite. Plus the bathroom vent blows out what seems like most of the air, leaving little left for the living room and kitchen. Trying to close that vent led to poltergeist levels of shrieking. Dreadful! I never knew about those nifty dampers until seeing this video. To my shock and delight, my retro house has them exactly where you said they'd be. I am looking forward to experimenting with these levers and having a cozy house, top to bottom. Sure beats getting a new furnace like some companies have suggested. Thanks so much, sir!
You're very welcome. Keep in mind heat rises so you may not get the first floor as cozy as upstairs.
If I can get them within 10 degrees of each other, it will be a huge success.
Without even seeing you house, that should be very doable.
This is so upsetting. The airflow in my house is so bad. There are 2 dampers on the trunk duct in the basement. I thought I had somewhat solved the problem in summer by closing the damper to the basement and forcing most of the air to the living level and the 3rd floor. After a few years doing this, a contractor found mold in my basement walls and the entire basement had to be gutted. $5000+. This past summer I bought a freestanding AC unit for my BR to run at night, and was able to survive it, but my kids were still roasting in their rooms. Now that I know I can't shut off the flow to the basement, I guess I'm going to have to purchase window units for my kids' rooms. I'm hoping all the trees will hide the window units, and the neighbors won't be able to hear them, because they are in violation of the HOA.
Kris. Thank you for this vid., and especially the duct map showing CFMs. I found one branch right under a Kitchen cabinet, so I took off and filled the Boot with insulation. I planned to add it to my 82*F Bedroom before I saw this. Now I am going to see if I have these adjustable dampers first. I live in GA.,
Glad i could help and I hope it works out for you.
Lol I’ve never seen a duct work with the dampers . How many people even have these. Who is this advice for
Probably a bunch of people. Of the 5 houses I've owned, all had them.
This is great if you have an attic access or a basement. How do I find my duct work on a house built on slap?
Do you have a forced air system? Then you will have ductwork up in the attic it may be a tight squeeze though.
There is no airflow from one of the vent in one of the rooms in the basement and the basement is finished. How to fix it. Could you please advise
No air is concerning. It's possible the branch duct detached completely from the trunk. Maybe get a snake-camera to take a look? If this is a recent remodel job, i'd get the HVAC contractor back out there. If all ducts drywalled in, meaning no access, you may have to start cutting access holes in the drywall--not hard to do and fix, but cutting, patching, sanding, painting will be needed.
Any idea why some of the vents in my basement don’t have adjustment valves where you can open/close them? Am I not looking closely enough
Because they cost more. You can install them after the fact
My house was originally built in 1871 and is stone. Additions were added in 1977, 1992, and 2004. It is three stories with two AC air handlers. The AC was added in 2004; it is not a high-velocity system. My husband swears that there are NO dampers in the system. That it would be too expensive to have dampers (run by motors) to be installed. The hall bath on the second floor and the hallway on the second floor do not have vents for AC.
My question is are all the ducts in the basement, even for the second floor? Will I find the dampers that you describe in the video in spite of what my husband says?
It's hard to say what you have going on.Some feedback anyway... motorized dampers are generally used in commercial applications where air is constantly moving--i think rare in residential. Dampers added after the fact could range in price but i can't see that addition being too expensive. i'd just poke around the branch/trunk intersection and see if you have them. If you do find some, hang something on the handle and point out the cool hanger to your husband--then let him figure it out, hahahah. A real cheezy fix could be to just pinch the duct a bit to restrict air flow. regarding the upstairs, where are the vents, ceiling or floors? I doubt the upper floors are fed from the basement due to large ducts and thin walls. I'm guessing you have a unit in attic. Its rare to have a vent in a hallway, bathroom should have one--required by code in most states.
Thank you for reminding me. There is a unit directly above the bathroom that has no AC.
My understanding is that one of the air handlers outside handles both the third (attic) floor and the second floor.
There are two bedrooms and one jack-n-jill bathroom up there. Both bedrooms are occupied and can get cool only if both bathroom doors are open but the bedroom doors to the stairs are closed. Each room has a vent. Those vents are in the walls at various heights depending on the room.
Second floor - the vents are in the ceiling. First floor - the vents are in the floor.
There are two thermostats and controls; one is on the first floor right above the air return and one is on the second floor in the hallway, near the air return in the laundry room (no AC in there, of course).
I wish we'd done HV AC as it would have cost the same (different vendors), but, oh well.
My house was built in 83' with flex duct. Do you think this will work?
Hopefully your duct work will have those dampers if so, it’s just a matter of adjusting them
Great video! I had a technician come out because I wasn't getting heat in 3 bedrooms. He told me I needed to a damper installed. He said my house (built in 2006) didn't have any in the duct work. I still don't know if it is something I can do myself, but at least now I can go look in the attic to see if they see there.
If you have access to your ducts, adding dampers is easy.
Do all houses have dampers on the lines? I dont want to look for something in the attic that is not there.
It will vary
Excellent video thanks !
You are welcome!
Thank you I will definitely try yhis
thank you so much
Very informative
NIce job
Quality content; hanks for the help.
How do you insulate the cold air duct (very cold when it’s -40 outside) it’s exposed in the unfinished basement. (Making the basement cold 🥶)
thanks for upload ...
Brilliant! Thank you!
You're very welcome!
This is very useful (even though I'm late to the party). I have a single story (ranch) with all of the duct work fairly easy to get to from a full basement with drop ceilings. None of my ductwork has the insulation around it...I'm wondering how useful it would be to try to retrofit it with insulation. The finished basement is a pretty consistent 68 degrees regardless of the temperature outside. Would you suggest going through the effort of trying to add insulation where possible? At least I have dampers to adjust.
Thanks!
amazing
I have one room that doesn’t get good air flow I noticed that it’s ran from the trunk right next to another duct. That duct is a short run to my bedroom an the other is a longer run to another bedroom. Assuming that airs taking path of least resistance. I closed my vent a bit to get more air in the other room. I notice a difference but that room still seems a bit warm when I walk in there. My room now since I closed the vent slightly has the air blowing directly down instead of evenly across.
I don't have flex ducts and i do not see any dampers at all. Are they not there or where do i look for them?
Are your branch ducts insulated sheetmetal, or fiberglass? Either way if you have the air flow dampers, they will be on the branch duct near the main trunk. You may have to dig through the insulation. But there is a possibility you don't have them. If no dampers, one option is to determine what room has excessive air flow and install a damper on that branch duct. I've installed them and it's not too hard
@@KrisKasprzak there is no insulation and no dampers. I saw that the one branch only ties into 2 lines (1 for the living and 1 for that hot bedroom) so i completely sealed off the living room duct (used hvac tape where the register would be) since the living room has another vent and its usually too cold. I was hoping by doing that that all the air would go into the hot bedroom. It worked a lil but not enough
Excellent explanation and detailed presentation. Very easy to understand. Thanks so much.
Glad I could help.
I don't have the dampers in my house. Not required by code when it was built in South Florida in 1986. My problem is that I have a vent right above the air handler going into the living room that is taking all of the air and leaving none for the bedrooms. I think I am going to "damp" it by placing a section of AC filter in the vent grille, probably trying a few different filter material types to see if this makes a difference. My only thing is that I do like more air to the living areas during the day at the height of summer and more the the bedrooms at night so I may have to figure out an easily adjustable solution.
I am hoping this is my issue, I have a crawl space.
My daughter's room is 15° warmer than anywhere else. But in the upstairs it has two vents but it's almost cold, so I'm guessing the duct through the dead space is not covered up.
I have two levels plus attic. I have a DuroZone remote damper control on the second floor wall. I need to know what to keep it set on? It has open, 1/3, 2/3, closed. I have trying to google the answer to no avail. Can You help with that?
cool, smart homeowner who actually did that right
Glad I could help.