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Neil Comparetto
เข้าร่วมเมื่อ 30 ธ.ค. 2012
Duct Leakage Testing- East Coast’s first Ring 4 Club member!?
Ductblaster results of a super tight duct system. #Ring4Club #highperformancehvac #tightducts #homeperformance #ductedminisplits
มุมมอง: 280
วีดีโอ
Crawl Space Duct Leakage
มุมมอง 2696 ปีที่แล้ว
While doing an inspection I noticed cold air coming from the foundation vents, so I decided to measure it.
Powered Attic Ventilators- Good or Bad?
มุมมอง 42K6 ปีที่แล้ว
In this video I test attic pressure in reference to house pressure with the PAV on.
Evacuation Hose Challenge
มุมมอง 8006 ปีที่แล้ว
I put three different evacuation hoses to the test- does size really matter?
Debunking the 500 sf per ton rule
มุมมอง 2.8K6 ปีที่แล้ว
In this video I walk through a heat load calculation of my own house. I also show some data from my Ecobee thermostat, and Testo 605i.
A Tip for Taking Static Pressure Readings
มุมมอง 1.3K6 ปีที่แล้ว
A way to take minimally invasive static pressure measurements.
Crawl Space with Problems
มุมมอง 1856 ปีที่แล้ว
Typical vented crawl space with several issues. Bulk water intrusion, microbial growth, including in the duct system to name a few. The repair process has begun. Look forward to future episodes as we correct the issues.
Airflow Test-In. Capture Hood & Vane Anemometer
มุมมอง 13K7 ปีที่แล้ว
Heat load calculation and airflow test-in of an existing client's new property. Step one of generating scope for a proposal.
Static Pressure and Combustion Test Ports and Plugs
มุมมอง 3.8K7 ปีที่แล้ว
Quick overview of some options for static pressure and combustion test ports and plugs.
VLOG - Customer Service
มุมมอง 2497 ปีที่แล้ว
Yesterday's Contrasting customer service experiences. BluVac and Big Box Store.
Quick Look - Fujitsu Slim Duct, Installed Vertically
มุมมอง 32K7 ปีที่แล้ว
A quick look at a Fujitsu Slim Duct air handler installed in a vertical application.
Can moisture freeze in a vacuum?
มุมมอง 15K7 ปีที่แล้ว
I conducted a few experiments trying to freeze moisture during an evacuation.
System Performance Bag
มุมมอง 4587 ปีที่แล้ว
Tools of the Trade vol. 2. My bag for evaluating system performance.
iManofold/Testo 310 gas furnace start up
มุมมอง 1.3K7 ปีที่แล้ว
iManofold/Testo 310 gas furnace start up
WaterFurnace Series 7, Ultra-Aire, Zehnder, GeneralAire install part 2
มุมมอง 1.3K7 ปีที่แล้ว
WaterFurnace Series 7, Ultra-Aire, Zehnder, GeneralAire install part 2
WaterFurnace Series 7, Ultra-Aire, Zehnder, GeneralAire Install part 1
มุมมอง 1.8K7 ปีที่แล้ว
WaterFurnace Series 7, Ultra-Aire, Zehnder, GeneralAire Install part 1
The attic fan works with proper venting, Only an idiot would put an exhaust fan in a sealed room unexpected proper heat transfer
I watched this video when it was new. Probably the most underrated hvac video on TH-cam. I have tried on more than several occasions to make ice but have been unsuccessful. Good job.
It doesn't do that if you have plenty of intake vents
That thumbnail hurts my feelings. Somebody please cover up that excess gable vent around the fan 😢...
Hi. Just seen this video and have a question. Does the hole in the side of the needle have any adverse effect on the reading?
I dont understand. If the air from the living room is sucked out, then why not just make more air intake int he living room from outside air? Isnt it a natural ventilation system is it?
Hey brother ….I know your a busy guy….if you find the time , could you put some links in the description to those fittings snd the pvc T , and plug …..also, put a link to that drill bit and sheath. thanks in advance…. (I am a beginner 😅 just trying to do things in the best way )
Of course if you're going to be fine with 75 degrees when it is only 92 degrees outside, this is enough. that is way too hot for me (70 degrees). we are usually around 100 and have a lot of days between 105 and 110. we currently have a brand new 4 ton heat pump system that is totally failing to cool our 2500 sf house built near sacramento in 2001. 78 degrees upstairs on 89 degree day.
FWIW I ended up putting in a 1.5-ton Mitsubishi SUZ/SVZ. I have no problem maintaining 70° inside when it’s 15° - 95° outside. Sounds like you may have some insulation/air tightness/duct issues that your HVAC has to overcome.
maybe you need more hole side of the house
Give me a shout if you're around the area still.
this is a contradiction! How then, during vacuum, is the water to be removed from the system if it freezes? frozen water particles cannot escape from the system.
i was thinking off installing one right over my pulldown stairs that is in my garage(man cave) with no windows here in florida i do have vented soffits and a ridge vent already in place .Neil Comparetto do you think it will help pull some hotness out of my garage??
I’m standing in front of a set of 557s right now with a micron gauge doing the exact same thing. Fk.😂
Surely, powered attic ventilators 'blow' not suck?
*Well-made, delivered quickly, and easy to install with **Fastly.Cool** . I may be imagining it, but it seems quieter than the 14 year-old unit that I pulled out. Of course it was noisy at the end due to failed bearings, so hard to compare. :)*
Just vent the soffits problem solved.
I think if your AC system is in the attic then whatever you need to do to lower the attic temperature is it going to be beneficial that doesn’t mean negate Aiir sealing you’re attic. But you have to consider 140° attic provides a substantial heat load on a home and hvac system. There’s duct seepage insulation value radiant heat load and many other considerations. To simply show a smoke draft test and say this is why a fan is dumb is not a full thought.
No sir you suck. Before I installed my power attic fan all I had was 2 stupid whirls birds on my roof and soffit vents all along my house. Those stupid whirls birds didn't pull enough hot air out. It used to get 83 degrees in my living space with the ac cranking. I install a power fan and now the hottest it will get in my living space on 100 degree Houston weather is 80 degrees. 3 degrees makes a huge difference.
So you’d rather have heat go into the house then? What’s the difference? Seal the damn attic from the living space first, then the attic fan will make sense later.
Buddy looks like you’ve gots a problem the bests thing I ever did was getting a attic fan ,, my attic stays at about 108 instead of 160 ,,,,, you might want to check your statistics again
My micron gauge doesn't hold and only reaches 690 microns but still it wouldn't hold I tried it directly on my vacuum pump and it reaches 69 and fluctuates back to 179 doesn't stay one place what can cause this does anyone know tried what you did but still no solution
I would try to replicate the same test with a different micron gauge - see if the results are similar.
A year on the battery, what is that a hybrid energizer and nuclear fuel cell?
How to buy
I need carbon monoxide detector
I’m not sure if you meant Bryant or the sticker that was covered up?
Hi Neil, I'm trying to find a good flex duct brand that you've had experience with. I know all flex is not created equal (I'm mostly concerned from a durability/airtightness standpoint). Thanks!
Angie - I like the Atco and Thermaflex brands the best of the ones available to me… Thermaflex also has some very durable options available, but they are significantly more expensive than “standard” flex.
Thanks for the prompt reply. I actually saw a bunch of thermaflex at Menards the other day
43 dislikes from the people who don’t understand negative pressure smh
Awesome video, just passed my AMRT exam and learned about manometers. Do you have a suggestion on cooling a hot Oklahoma small home attic space? Small fan on one gable pulling and another fan on the other end exhausting?
In general, attic ventilation is kinda overrated - it’s main purpose is to prevent condensation on the roof deck in the winter. If you don’t have that it’s probably sufficient. If you have hvac equipment and ducts up there I would consider spray foaming the roofline and making it conditioned space. If there are no ducts - move/remove the insulation, air seal the ceiling plane, add more insulation. Then it doesn’t matter how hot it is because it’s air sealed and insulated from the living space.
@@neilcomparetto5282 We plan to seal it, including the attic access door, remove the HVAC and blown in insulation and replace it with foil faced batt everywhere. Just cooling it down is the obstacle, it hit 170 F up there during the inspection, which of course has led to the HVAC problems. Would the new install of the HVAC just run a flex/supply up there also to cool it, is that your suggestion? Thanks for getting back to btw.
@@amv_pure not sure if you’ve seen this… if you haven’t you’ll come away knowing a lot more about attics. th-cam.com/video/Ld8pzIu45F8/w-d-xo.html
@@neilcomparetto5282 Joe is the man, thanks for the link. Most appreciated.
@@neilcomparetto5282 I have watched this, thanks for the link. Appreciate it. I got a question for you. I have a client in Utah who is building a house and the contractor is insistent on using spray foam in the attic. He keeps sweating the R-Value and ice dams and I keep telling him my client is VOC sensitive and find an alternative. As far as that climate zone (Utah) what other insulation do you suggest. Blown in is a no go too, because of the steady particulates that come off it. I was thinking Rock Wool batt style. Maybe you have a link on insulating homes in colder climates?
Please get solar attic fan which has far lower wattage & power, most only 12V & 10-50 watts & it won’t suck the air out of the house. The house need seal good also. Electric 120V attic fan is too powerful, it will suck the cold air out of the house behind the hot 🥵 air in the attic.
have u had one before??
So if the fan can draw air from the living space, doesn't that mean the hot air in the attic can push into the living space? Wouldn't it be better if the air in the attic was less hot?
That’s certainly an accurate statement unless you reverse and point it into the attic, then it blows!
Explain why
I think soffit vents can solve the problem
This is like saying, well a car's tire could become flat due to nails... car tires suck then... It's not wrong, but it's also not the complete picture. For instance, anecdotally we live in a very hot area, have sealed our house/attic connections and use a vent fan. It has dropped our power bills by as much as 30% during the hot months. (110 degrees + for multiple months.) Sure there are other and better long term solutions. TL:DR say "vent fans suck" is not accurate, saying "attic to living spaces need to be sealed" is much more accurate.
Attic to living space needs to be sealed and properly insulated but most people overlook the necessity of adequate intake ventilation. Ideally your exhaust vents and intake vents in a static system should be balanced 50/50 but to stay on the safe side it doesn't hurt to have a 60/40 split between intake and exhaust where you have more intake available than exhaust to prevent the exhaust from pulling excess air out of the living space. I'm curious how effective a powered intake on one gable combined with a powered exhaust on the opposite gable would be or if anyone has tried it.
Hey Neil question? I have a detached garage that I put all Sheetrock in and insulation walls and ceilings also I have a window ac unit. No gable vents or soffits installed (only 2 roof vents. What can I do will it rune my sheetrock or walls ceiling ?
would there be a vacuum in the attic if there was a gable fan at one end and a gable inlet of equal size at the other end of the attic?
I wouldn't think that would be an issue. I'm not a contractor or anything at all though.
@@anthonyjulson8840 it's a huge issue. Attic ventilation needs to be evenly distributed between intake and exhaust to prevent excess negative pressure in the attic. If your exhaust it trying to pull more air than the intake can provide it will pull warm moist air from the living space into the attic in the winter and cause mold.
@@shibbyrick Why would you be running an attic fan in the winter? I agree that AFAIK moisture/mold from air travelling through spaces like walls is the concern. (and generally pulling a lot of unfiltered exterior air through your house) But what areas run attic fans outside of summer? I thought they were meant to 1) keep attic temps close to ambient therefore reducing heat in the living spaces. 2) limit attic temps to <120-140 to protect roofing materials.
Just when you think you got it all figured out? It happens to the best of us!
Thanks for the video, Man. I'm about to seal and insulate our attic, and every bit of information helps. Where could we purchase that 2 part foam system or something similar to it. I've seen some online, But they mention only being able to cover " 16 board ft". That sure seems like a bit of money , for very little foam.
Thanks! I get mine from a local insulation distributor.
Just installed a gable attic fan in the house today. I think its a case by case situation, as we have tons of tree cover and don't really notice the heat inside the house until its dark and cooling off outside (old house 2x3 walls). I plan on putting a supply and return within line sight of each other and running them for a short period of time on a switch from within house.
i agree. i think you need a gable fan out and gable inlet on the other side of the attic. That shouldn't create a vacuum in the attic
I have a lot of tree cover most of the year with 10a-2p allowing the most direct sun and most sq. ft. of roof. When there's no, or little, breeze, the attic temp can really rocket up. I've got a gable fan with a thermostat that works great for getting that space cooled down. What this guy is showing is not that the fan is bad, but that it's too big and or pulling more CFM than his venting (soffit, ridge, ?) can handle. And that there are areas that are not well sealed. The objective isn't to suck out all the air in a minute.
@@wildcat7266 Yes, and/or soffit vents or ridge vent. There's things wrong with this building and/or fan size/speed.
Can you install Mitsubishi ducted mini splits like this too?
did you ever get an answer to this question?
REALLY, man it took u that long to say that it was the coupler!
One minute video and you're showing walls. What about the Fujitzu system?
I recently installed an old heatpump that was stored outside for a couple years. Vacuumed and filled with nitrogen probably 6 or 7 times over the course of 2 days to get below 500. Probably 10 or so hours total vacuum time.
Hi can you plz tell me the capacity of pump you use
Rajpathi Yadav 7 cfm
So explain please. So the fan is bad?
Robert Martin it can, and often does have a negative effect on energy use and comfort. It will put the attic into a negative pressure causing conditioned air from the living space to enter the attic. When air leaves the living space to outside (attic), it must be replaced with outside air. That outside air is usually hot and humid... Best practice is to air seal and insulate your attic and not care what temperature it is up there. (Hopefully there isn’t any ducts)
@@neilcomparetto5282 when you say there isnt any ducts what do you mean? I have plenty insulation in the attic and there is still a fan up there that is so loud and turns on when its above 100 degrees in the attic. I do have both AC units in the attic too. So i have ducts coming from them down through the ceiling...
Waiting for the follow up on the cooling side !
Mike Cianfrocco it’s about 25-30% oversized.
Neil Comparetto So do you think a one and a half ton is a better fit?
Mike Cianfrocco I have enough cooling data to feel comfortable putting in a 1.5 ton... If I’m a little short I’ll do some attic work.
Nice job bro. Better to have a few good comments. Better than 1000 trolls
Is there a way to test pressure but not have that red hose causing that big gap in the pull down ladder? Doesn't that throw off the reading?
You can get thin metal tubes... In this case I don’t think it matters too much, the door didn’t seal well naturally, and there are plenty of other holes (top plates, electrical/plumbing penetrations, register boots, etc.)
Put one on one end pulling in and one on the other side pushing out, run them on the same switch, stupid.