Plenum Issues - Fixing Badly Installed, Leaky Ductwork In An Attic
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- Опубликовано: 2 май 2021
- Jeff Haag, the owner of Diversified Energy talks about how badly installed ductwork & plenum can cause moisture issues, increase energy bills, and reduce indoor air quality. Jeff also talks about how Diversified Energy fixes these issues so our client's ductwork is airtight and works correctly.
The owner of this home was complaining about high energy bills, their HVAC system constantly cycling, and dust and dirt in their home. Diversified Energy performed a full inspection of the homeowner's HVAC system and found many issues with how the original HVAC contractor installed their ductwork.
Unfortunately, it is very common for HVAC contractors to cut corners to save time on their HVAC system installs. This commonly means not properly sealing ductwork connections. In this video, you will see what Diversified Energy did to fix the issue and drastically improve this homeowner's ductwork, HVAC system efficiency, and stop dust and dirt in the attic from being sucked into the duct system and blown into the house.
Every day, Diversified Energy fixes the mistakes made by other contractors. This can be properly sealing ductwork, fixing bad insulation or spray foam jobs, and more. When you want your energy efficiency improvements done right, the first time, Diversified Energy is the only call you need to make.
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Diversified Energy is the leader in high-performance home and commercial energy efficiency solutions. We provide multiple types of insulation installation services, diagnostic testing services, whole house & duct sealing, infrared thermography, and much more.
For more information, or to schedule a consultation, please contact us:
Phone: 504-273-7779
Email: Info@DiversifiedE.com
Website: diversifiede.com 
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Came across your video today. As a semi-retired HVAC specialist with 20+ years of experience, you are correct in the fact that this is what you typically see for an A/C install... Usually, a result of the cheapest bidder gets the job, ESPECIALLY in new construction... As I see it, those pressure boxes KILL air flow!! They build too much static pressure, and when you are talking HVAC, it's ALL about airflow, airflow, airflow... Another major issue with this is the quality of the installation. The flex duct is great; however, it MUST be sized & installed properly. All the ductwork should be sized according to ACCA Manual D, and all ductwork must be pulled tight and strapped every 24". You want nice big curves, no hard kinks, and ABSOLUTELY NO pressure boxes...
Yes dont know why he was worried about sealed boxes when they shouldn't be there in first place.i would have ran metal trunk in the time he played with those boxes wich are incorrect. Never understood why people ever thought that having your whole duck system flex is ok 5ft per take off is what it should be not whole system.
Without a pressure box, how do you split a large feeder duct into multiple small ducts?
@@ZimZam131 you are not supposed to split in first place. Flex is only for short individual runs not to do the whole duck system. You should have a main trunk with individual take offs.
@@richardharmon874 The main trunk in my house looks like an 18 inch flex duct about 25 foot or so. So is my whole duct system done wrong? I’m actually trying to get quotes to replace them now. They are old and leaky.
I don’t get how a box can “add” pressure. Only the fan adds pressure. Maybe A/C SuperCool meant it adds turbulence?
@@ZimZam131 yes unfortunately its done wrong. It will work but its not correct. You can Google what the maximum flex duct length is acceptable. I think its 5 to 7 feet. I from new England, we use metal duct, down south they use duct board but never run a trunk in Florida they just flex the whole system wich is not the correct way.
No comment on the duct at the top/back turning a sharp 150 degrees and squashed up against the roof? I think you said that was the supply to the box!
The funny thing is that this type of installation is common in very expensive homes.
Frustrating for we home owners who do not and should not be expected to know the industry specs and procedures for a HVAC system or any other functions in our home to include electrical, plumbing or even an auto mechanic as another example. Since innovations like the internet and RUclips we do have some way to vet contractor's work, but its a daunting task and I'm never sure I've covered at least the basics. Point being, I really shouldn't have to. It's sad the industry standard by "professionals" is to make as many short cuts as possible putting more money in the contractor's pocket to include the fact so many people are just lazy. It should be shameful, but it isn't. Sad testimony of the level of work ethic in this country. I don't mind paying for a professional, but we should have some confidence we'll get what we pay for.
just ripped out 2000 sq ft crawlspace duct system and am properly doing it myself for the exact reason(s) of : lack of ethical work practices, failure to follow any 'standard' of installation, failure to clean up after work done. add any i missed. saved $20,000 on an estimate. took me weeks , but... it's done absolutely correct
Nice nice. I need to make a video myself to show people.
I guarantee the highest quality for all of my installations. I also am NEVER the cheapest bidder.
Are we listening to you or the piano playing in the background?
I can taste the dust in that attic
When are we going to stop putting HVAC in the attic? They are losing the efficiency if they furnace and a/c.
When I see systems like this is makes me sad, people have lost their pride and what it means to install good work. Cheap, fast and lazy are the new words for most companies. Sadly the days of old school installers are over, now its all about cheap.
What do you expect when they hire labor with no experience, or any idea of what they are doing.
@@rodgraff1782 Because companies are cheap and don't care about anything other than profit. I have seen company after company pay very low wage, no benefits, and fire people or lay them off min things slow up. This is why no one with talent stays or if they do cares. The issue stems from the core, companies no longer operate to do good work, its all about fast money. Best thing people can do is learn as much as they can and do things themselves.
See it all the time pretty much on every single job just about... Its always the same thing.. duct slid on too much not about bite room not enough tape in the right spots, also never any spray glue first for the tape!! Ill even see the putter liner not tucked in so the insul. Is just on the collar itself.. I see alot of ppl use a zip tie but that's basically uselrss lol
What about the kinked flex on the top connection?
So I can tell that the interior of one of my boxes is wet on it's top panel. There's some sort of electrical control box mounted to the top of it. The electrical box says "XCI ZONING POCJ" on it, and has a wire running into a wall. I believe it's the control running downstairs to the downstairs thermostat. I think the installation of this electrical box through the fiberglass box, ruined all of it's insulating properties leading to moisture collecting in the top panel at the intrusion point of this electrical box.
Well anyways the box is probably 4' L, 2'h, 2'deep the the entire top corner near this mounting is FREEZING cold and pooling water on top of the box. Everything seems soaked on the inside, which is why its freezing cold through the mastic. How best should I fix this? Obviously replacing the entire box is an option, but I really don't know how comfortable I am about doing that, and I assume any quote from HVAC companies is going to be way out of my budget. My idea was to create a but of a "chimney" of cardboard around the electrical box to keep it safe, and then using closed cell spray foam all around that cold section of the box. Would adding this layer of insulation be an effective solution? My hypothesis being that this will keep the dew point inside the box from collecting more water, and it will simply dry itself over time. I even contemplated running the heat and house fan through it afterwards to push the humidity out of the ductwork and into the home, where I can collect and dispose of it via opening the windows (50% humidity outside) and running dehumidifiers.
My hope is that solution will A) insulate the box from the outside so that new water stops soaking the inside of the box, (B) removes the existing water from the inside of the box.
You should've gutted it down to the ceiling line and ran new metal trunk line instead of adding mastic on a ductboard system.
I would have torn all that out and re ran everything with the proper sizes, using Y branches, instead of tying to repair that restrictive distribution box.
Would making the box bigger make it less restrictive? How much bigger?
Wait, so they just taped the insulation surrounding the duct, but not the actual metal duct joints? I heard you can use tape instead of mastic to seal the ductwork.
What is the cure time
Nice work sir I for like to join you for the work am a Nigeria I have experience sir
Should the old adhesive/glue be removed as best as possible before adding new adhesive/glue?
For all adhesives on all surfaces, you want clean mating surfaces. That mainly means there shouldn’t be small particles like dust, dirt or degraded adhesive that is easily peeling off.
Small particles act like a barrier between a mating surface and an adhesive, causing the adhesive to peel off. A rough, imperfect surface is fine, as long as it’s brushed off.
That’s one hell of a hack installation. Where’s the metal supply trunk? What a joke. And this guy is worried about the duct seal. He did the same thing. All they did was add the duct seal around the flex collars that were tapped into that mixing box. Tear that sloppy mess out of there and give the home owners a solid install. Probably charged them a pretty penny to correct the problem..wink wink.
Lol, spent much more brain power shooting and explaining the video, could have properly installed their ducts but instead just sealed up a turd
Some people cant afford the big fix,
Improvement?? Get a trunkline and get rid of flex, that would be Improvement
That dust is from that nasty attic space.
Kinisou kinisou ngenuk pwipwi nge omwusono you con mantee love
Rip all
Of it out. Spray foam and use minisplit
I do ducts gpr mobile homes along with the seals left behind by plumbers, electricians, and hvac ppl, as well as the vapor. Barrier. We take a before video and after. We stand by our work. Basically every home is supposed to have this done and dame quality of work. Its nothing made up. This is literally by code, its a healthcare issue. You could day the homes are in a state of recall.. anyways i like being able to help ppl. Every job we do is always done wrong from someone else. Its good in a round about way BC we'll always have work anyways 😂
I learned nothing here
I cant believe people think those distribution boxes are correct. You see this in Florida all the time.i would not be worried about the seal i would rip all that crap out and run a metal trunk, flex should ony be run 5 to 7 feet not the whole duck system. The truth is all that duck is wrong if you think its ok then you failed sealed or not sealed.
Yep I born n raised in Florida. Pretty much every single duct job I ever seen isn't done right like shotty work, or just not proper, I mean anyone can technically tape.the ducts on.. doesn't mean it'll be correct, basically ain't going to last long.. you especially on Florida. No 1 I ever seen even uses spray glue .. also sliding duct on too far . Tape not in the right spot. Which is why it always never lasts hardly and starts falling apart the duct and tape.. anyways I'm doing my house at the moment actually. Had some huge gaps in my vents even a huge hole in my trunkline where a duct used to be!! 😅 It was capped with the leftover trunkline except just a little tape of course with humidity and condensation.. crazy glad we go it fixed...
Sir I am air conditioner duct fitter you have vacancy I am experience 15 years Gulf country in Kuwait
Matilda! 😍
You actually do have to tape the outside jacket, not just half a container of mastic LOL
the tape will eventually get soggy in a hot attic.
mastic isn't everything, high quality duct tape is as effective as mastic if not better
Yup spray glue duct tape. Gotta have metal tape too,in the right spots. Like metal on metal... Yeah tho you dont even need to go crazy with the tape 3 layers. Squeegee real good. Mastic is still good matter fact needed for shit to be proper.. for Y connections and the unit connection atleast.. anyway
Rip all that out and get a metal duct
Why not replace that with a duct lined metal box or metal trunk assuming your prolly in Florida or Texas where humidity is a big issue so you use duct board but it’s trash. And so did the end after y’all mastic it like preschool kids painting
He don't know what he's he's doing it the cheap way for him save him a lot of money
air handlers in the addict is a dumb move period.
Looks like a 5 year old applied that mastic- HORRIBLE QUALITY OF WORK
yet installers don't care.. they just want that money.
get to the point dayum!