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-1 votes

Range hood vents into attic space

Don't quote me on this, but, I have also heard of these 1960's-1970's houses doing this and it was fine for at least 50 years. No residue or "grossness" beyond normal was noted by the ...
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0 votes

Offset HVAC return grill causing ringing?

Turbulence and resonance are mostly voodoo. I think your best approach is to find out precisely what part of the HVAC system is ringing (vibrating / resonating) and then find a way to damp the ...
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1 vote

Routing a dryer vent 2x6 rim Joists

A rim joist is supported 100% from below by your foundation wall, right? Unless you have a very heavy downward force directly above the 4" hole there is nothing to worry about. Large holes are a ...
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1 vote

What are good strategies for fitting range hood vent ductwork in tight spaces

The 90 degree elbows shown in the picture will rotate on themselves and become 45 or whatever degree bend you want. Then they become much easier to shorten. You can cut them and use a stove pipe ...
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0 votes

What are good strategies for fitting range hood vent ductwork in tight spaces

I believe the answer to this question is: "The correct pieces that you need are likely already available off-the-shelf, but it just takes some shopping-work to find the right combination and you ...
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-1 votes

What are good strategies for fitting range hood vent ductwork in tight spaces

Do you have room above the cabinets to do something like this?
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1 vote

Can "restrictive ductwork" determination be temperature dependent?

The issue is that your system is losing capacity to the duct restrictions (TL;DR: fix your ducts!) You are right to ask questions about this diagnosis: ductwork doesn't exactly change with the ...
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0 votes

What is this mystery ledge on the ceiling? (And can I put ducting through it?)

If your ceiling joists are parallel to the window, you will not be able to run any ducting thru the joists. However, there may be sufficient space above the joists to run your proposed duct? Don't cut ...
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2 votes

What is this mystery ledge on the ceiling? (And can I put ducting through it?)

There's a stair landing? that'll be what it is. It's hard to guess how this load is supported. it may be possible to run ducting between the joists either towards the window wall or parallel to it.
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3 votes

Should registers have gray duct sealant

Should the internals of a register where connections are made have gray duct sealant? Not typically, no. Duct sealant, or mastic, is applied to the exterior of the joints. You don't want it on the ...
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3 votes
Accepted

Should registers have gray duct sealant

When we built in 1994 the sealant on metal duct connections was part of a series of steps to make new construction more energy efficient. This program was promoted by the power company as "best ...
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1 vote

A/C air handler in Attic duct runs

The 7" duct appears to be smaller than the one going to your bedroom and it looks longer which would be why your bedroom is getting more air, path of least resistance. The arrangement out of the ...
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  • 57.4k
0 votes

Reducing noise from a large return register located on the door of my apartment's HVAC closet (inside)

Your door is creating a sound resonance box, like a amplifier. Isolate the door from inside with some heavy insulation to dampened the resonance, leave the air vent open.
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2 votes

Reducing noise from a large return register located on the door of my apartment's HVAC closet (inside)

Rather than focus on the symptoms (i.e. trying to dampen the noise), I would try to figure out the cause. A constant loud roar could be something vibrating far more than it's supposed to, for example ...
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1 vote

Reducing noise from a large return register located on the door of my apartment's HVAC closet (inside)

One easy fix you might try first is to get a roll or small sheet of "Mass Loaded Vinyl", a heavy vinyl material used in soundproofing cars and washing machines. You can get some of this, ...
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  • 1,327
3 votes

Is it possible to have an air leak from the ductwork?

Your assessment of the problem is very likely since ducts can come apart especially if work has been done on the system or on the plumbing. Check with the maintenance department for the building since ...
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