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Questions tagged [ducts]

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Bought a home, return air vents on ceiling have R19 insulation shoved in them?

Checking filters and seeing what needs to be replaced, I opened the return air grate on the ceiling and what I find inside is a hunk of R19 insulation. Seems it should be some proper return air filter ...
user1447679's user avatar
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use of conduit for ducts

I need 2" ducts in this room I'm building. Flexible ducts and conduit are about the same price. I have high heat requirements. Can I use conduit for ductwork? What are the pros / cons? Thanks
Walrus the Cat's user avatar
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Round metal duct leaking water at crimped joint

Noticed a water leak stain in my ceiling in the drywall. Cut a hole and noticed water drops dripping from the joint of a metal round air duct. This duct leads to an external air vent on the side of my ...
Chris's user avatar
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How to fix noise in my bedroom since change of furance/ac but not air ducts?

I had furnace company back out and he told me it is probably a problem with a damper but it would be hard to find out where. It is only loud in my room on second floor but not in other bedroom next ...
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8 in thimble, 6 in pipe

I just installed a wood stove in the addition I built for my trailer. My father-in-law insisted on going and buying me an 8 inch thimble for my stove pipe to run through the wall. My stove pipe is ...
anthony hensley's user avatar
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how to deal with oversized furnace

I recently got a new furnace for our 1200 sqft house in Denver CO. We are planning on adding a second story in a year and I was going to wait until we did that to replace the furnace. Then the furnace ...
Murenrb's user avatar
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Increasing exhaust fan duct size

I have a bathroom exhaust fan that has a 3 inch duct outlet. However, I would like to use a 4 inch insulated flexible duct. Is there an adapter I can use to accomplish this or do I have to first use ...
bigmike7801's user avatar
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30 y.o. air pump troubleshooting. Where do I start?

500 sq.ft. apartment, 2nd floor, 32 y.o. through the wall, ducted air heat pump. The pump is installed in a closet next to the apartment (separate entry), and the air ducts spread from there along the ...
mzu's user avatar
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Cut cross-break duct?

I bought a piece of rectangular duct from my local home supply store but it is slightly larger than what I need. The ducts they sell are cross-broken instead of beaded. Is it ok to cut down a duct ...
Preston S's user avatar
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Central heat ducts(the ends that are attached to registers) in attic not securely attached to attic floor/room ceiling. How to secure?

When I removed the registers in the ceiling of our house I noticed that the ducting in the ceiling was totally loose. They are not secured in any way. The two screws of the register was what was ...
milesmeow's user avatar
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No insulation behind duct work, basement wall

Insulating my basement with 1.5" thick XPS foam to achieve R-7.5. Great. All things happy. Except I ran into an issue. My rectangle ducting (the main trunk) line actually stops a 1/4" away from my ...
CCCBuilder's user avatar
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Noisy ducts, problem with insulation?

I have what I'm coming to believe is a unique noise issue with the HVAC ducting in my house. I've spoken to four different professionals and they are all somewhat dumbfounded. The problem is that my ...
YWCA Hello's user avatar
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Basement duct installation with fire sprinkler pipe

Can I install a metal HVAC duct with register into the same ceiling joist bay as an orange fire sprinkler pipe, parallel to it? The sprinkler pipe has 2 heads on it.
battlecatt's user avatar
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Asbestos in close proximity of floor repair

I have a floor repair to make in a 1950's home that had the large in floor central heater installed that has long been removed. The owner wants the grate removed and flooring toothed back in, matching ...
Jack's user avatar
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Passing insulated duct through floor

A bathroom exhaust fan's instructions call for 4 inch insulated flexible duct to minimize noise and to prevent condensation in the attic space. The duct has to pass through the attic's floor boards at ...
jay613's user avatar
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How to seal the frayed fiberglass border of internal duct insulation in the middle of a duct

I had to remove the bottom foot of internal duct insulation touching the ground due to sewage backup. Now that there is a frayed edge of internal insulation inside the ductwork with the remaining ...
MonkeyBonkey's user avatar
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Size of a return duct

because I have a large bedroom, I’m adding another return duct which I will put on the ceiling against the wall. It's a 15’ ceiling and I want to get the trapped hot air out. Now, I was thinking of ...
eddie E's user avatar
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Would a ducted heat pump lose a lot of effeciency if the ducts are installed in an open crawlspace?

Currently I use a woodstove to heat my place (no ducts). I am thinking about installing an air-to-air ducted heat pump to heat my place. I am trying to figure out what are the important factors (in ...
hba's user avatar
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Sound proofing a panned floor joist return run (basement apartment)

I'm building a basement rental unit in our home. We'll be living upstairs so I'm doing my best to sound separate the upper and lower units. I'm using a seperate hvac system for the basement (baseboard ...
Evan's user avatar
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Can this stack air duct be removed to tear down small wall?

I have an appointment with the HVAC supply business that installed the furnace 2 years ago but it is months away. My question is can I remove this wall to make my shower bigger? Through research I ...
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