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What causes moisture in the clothes dryer?
Clogged or lengthy duct.
What causes the central air conditioner unit to use the secondary drain instead of the primary one?
Primary drain is clogged.
What could be blocking the airflow in my ducts in certain rooms of the house?
Check the dampers first, if they are open please read on this page.
What happen if I do not have a cold return vent in basement?
Nothing - if it's an unfinished basement, but you must have it in the finished one.
What happens when vents are shut on ductwork for central air?
Well, I have a special page dedicated to this issue.
What happens if I replace 6 inch duct with oval?
It may reduce the air flow a bit - not a big deal…
What happens if my water heater draft inducer stops working?
Then your furnace stops working either…
What is dryer exhaust ground clearance?
12" or above the snow level.
What is the best way to tap into an insulated duct to install a new ac vent?
Cut the flex, install a prefabricated tee or just make one (see Chapter #45). And you can buy one of these Tees on the right.
What makes more noise round or rectangular duct?
Rectangular duct.
What to do about sweating air conditioner flexible ducts in crawl space?
Please find an answer to this question on this page.
What to do if in the finished basement ducts sweat?
Put in basement a dehumidifier or just purchase one on the right.
What to do with old vent hood duct and roof vent?
Our new kitchen plan calls for removal of our old vent hood (new one will be in a different location). What should I do with the existing roof vent and duct? My contractor wants to charge me $500 to remove the old vent and cap the duct inside the rafters. Is this necessary, or is it okay to just leave it open (venting into the attic) and also leave the roof vent in place? Seems like I could easily save some $ and do the work myself if I only need to remove the old vent and any exposed ductwork, and fill in the leftover hole in my ceiling w / a drywall patch.
Remove as much duct as possible, all the way to the roof cap, if possible. Ducting will have grease residue so get rid of it. Plug the roof cap or use it as a roof vent until the next roofing job. Then get rid of it. Seal the ceiling hole with drywall and finish it.
When crimping round duct what is the tool supposed to be? You can use a crimpier or long nose pliers. You can buy both on the right.
When you patch large holes in plenum, what's best method to make sure patch piece doesn't fall thru while patching?
Will remove a 7" round starting collar from top side of plenum. Move it to another location. This is 1" duct board.
I would cut a "plug" to fit and use shiny aluminum foil tape to seal the "seam".
If you cut the "plug" about 3" - 4" too large and then cut back the fiberglass leaving the fiberglass the same size as the hole . You then have a foil "flap" to overlap the existing duct board . Seal with foil tape .
Where can I see pictures of kitchen vents with microwave?
Here!
Where is the easiest placement of ductwork in the basement for HVAC?
Where they are suppose to be according to the blueprint.
Which way do the crimped end to run cold air return in heating system?
Towards the furnace.
Why air conditioning condensate blow off?
I have a lot of info for this topic here, please read it all.
Why are my air conditioner's ducts sweating in my crawl space?
I have an answer to this question on this page.
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Condensate from Furnace Leaking into Crawl Space
Question
The home is a 1400 sq ft ranch on a crawl (cement floor/walls in crawl). 3years old. The furnace is an Air Ease Tech 80 (2.5 ton). We live in NW Indiana. It's been hot and humid.....
I discovered a wet floor under the plenum and noticed the water was coming from the plenum. I opened one corner and a lot of water poured out. We have discovered some water the past 2 summers, but this year seemed worse.
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Why do my HVAC vents "bang" after I put in a new heat pump?
If they changed the evaporator coil it probably means that your former coil was very dirty, but now when it's clean your ductwork appears to be undersized.
Why do you need an outside air duct for a gas furnace?
For combustion air.
Why is cold air coming out of the primary condensation clean out?
Because it should be capped off. Buy one on the right.
Why multiple warm air returns for a/c?
For better comfort.
Would a too small of a return air grille and filter cause the attic mounted air handler to sweat and cause condensation?
Yes.
Will installing dampers in ducting hurt the air handler?
No.
Work out 45 degree angles when fitting ducting.
Get info on this page.
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