Questions tagged [ducts]

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Installing a duct fan

For a room in the basement we connected a ceiling register to an existing duct. It is not very strong, but I found this product that might make it a little more powerful: Does anybody know how ...
2
votes
1answer
2k views

What are some tips for installing a roof cap?

I am adding bathroom exhaust fans. The roof caps I have attach directly to the duct (this is not the model I have, but it clearly shows how the duct attaches): I had a lot of trouble trying to get ...
6
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1answer
3k views

Insulating ducts in a crawlspace

Consider a source duct from the furnace/AC. The ducts run in a vented crawlspace. The floors atop the crawlspace are a mix of hardwood and kitchen vinyl. The symptoms are: the longer run vents aren'...
2
votes
2answers
15k views

What tape should I use to seal leaks in forced air heating system?

I have some of this duct tape Nashua 557 Premium Grade Flex Duct Tape. Is this the correct stuff to use to seal leaks in a forced air heating system, or is there something else I should be using? ...
2
votes
1answer
293 views

How large are in-wall heating vents that connect to registers?

I'm curious how large heating vents can typically be when connecting to in-wall registers. Do they fill up the entire space between studs? I'm framing for some drywall patches and would ideally not ...
2
votes
1answer
171 views

Fan between rooms?

I presently work at home, which means that I spend a lot of time in my office (ya think?). Unfortunately, this room is not a good one for air conditioning (or heating) in the house. I can often get 8 ...
3
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1answer
1k views

How hard is it to remove ducts?

I have an incredibly toxic smell emanating from one of my floor vents. I think one of my cats peed in the vent. Will I be able to remove the duct-work without ripping out the linoleum and sub-floor? ...
2
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2answers
3k views

Anyone heard of painting asbestos insulation tubes?

We recently had an old furnace inspected and the heating specialist mentioned that he suspected that the heating ducts had asbestos. He suggested painting them as an alternative to expensive removal ...
3
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1answer
233 views

Improve AC flow to secondary ducts

I have an AC which has 3 ducts coming out of it. Only one duct gets flow - I'm guessing the AC fan blows right into it. What can I do to improve the flow?
2
votes
2answers
6k views

How do I repair loose ductwork?

The ductwork in our 30 year old house has started coming loose where it comes up through the floor. It's nailed to the subfloor, but in several places, the nails have come loose, leaving gaps of an ...
7
votes
2answers
11k views

How do I install a jump duct?

Our master bedroom is considerably warmer than the living/dining/kitchen area of our house, and we've been setting the thermostat quite lower than we'd like in order for the bedroom to get cool enough ...
6
votes
2answers
66k views

Why am I finding condensation in my dryer?

I live in Houston, TX (Very Hot, Very Humid). In the summertime, my dryer is dripping with water, when not in use. I do not have overly excessive drying times. My dryer is vented via an unfortunate ...
15
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6answers
763 views

Is it worthwhile to have ductwork cleaned?

Was rearranging some ductwork in my basement, and noticed that the stuff I took down was pretty filthy inside (especially the return air ducts). Is it worthwhile to have ductwork cleaned out? What ...

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