Difference between air conditioning duct and vent?
Duct is a part of the vent.

Do hvac runs have to be straight?
This way it looks better.

Do I need a condensation trap in loft for inline fan?
No.

Do I need grilles or registers for my wall?
For air returns you need grills, for supplies – registers. Get more info on this page.

Do people run return air ductwork in attic?
Some of them do…

Do some contractors run condensate overflow in front of windows?
Some of them might.

Do you heat the unfinished side of basement?
Yes.

Do you replace water penetrated metal ductwork?
If they are not rusty and you stopped the leak then I wouldn’t do it.

Does it matter which way an S-cleat goes into a rectangular duct?
Yes, they both should be open up or down.

Does leaving a window open in a closed room cause the furnace to go on?
I doubt it.

Does room exhaust fan duct work in an attic need to be insulated.
In the cold climate, then yes.

Do I need a return air duct at the ceiling of my three story living room?
Better have it on the wall, just for looks…

Does a home need a cold air return?
Absolutely.

Does every room need a cold air return?
Yes.

Dripping noise in wall when forced hot air heat is on.
Learn hoe to get rid of it on this page.

Duct offset - to - length ratio.
Get all the info on this page.

Duct popping noise at end of cycle.
Learn how get rid of it on this page.

Duct riser details.
Get them on this page.

Ductwork installation guide for sale.
$84.99 its already for sale, but you can save even more! Learn how to do it on this page.

Ferroli mking stupid nosies.
Are you talking about stupid? Check out your spelling, genius…

Fresh air intake requirements.
Get useful info for this topic on this page.

Furnace bangs every time it shuts down.
Learn how to fix it on this page.

Furnace bangs when starting.
Learn how to fix it on this page.

Furnace install pictures.
I have a whole bunch of them on this page.

Home depot book how to install duct for hvac.
It just doesn’t exist. Get more info on this page.

Home depot flexible air duct installation in attic.
Never heard of! Get more info on this page.

How do closed door affect the balancing of my furnace?
If you have a cold air return in that room it shouldn’t affect at all, otherwise it may reduce airflow to the room.

How do I shorten a heating duct inside a wall?
I would try to pull it out first, if impossible, use a saw-zall with metal blade.

How do I attach the duct board plenums to the air handler?
UL listed aluminum foil tape. Don't shy from using two or three strips of tape to completely seal each side, making the entire strip wide so it grips the duct board and the air handler really well.

How do I connect 3.25" x 10" ductwork for a kitchen hood?
Learn this simple technique on this page.

How do I fix a heat register in house that is blowing very little air?
This is probably more complicated than you think. Find a solution on this page.

How do I get fresh air into a finished basement with no windows?
Learn how to do it on this page.

How do I stop drafts from my fresh air intake?
Learn how to fix it on this page.

How do they get a furnace into a crawl space?
I’m also wondering! This is stupid, right?

How to install duct work in a basement with a low ceiling?
If you want to finish this basement I would run it around the perimeter.

How to install sheet metal duct work do it yourself tutorial.
You can find it here.

How to know if bathroom exhaust fan is working?
If it holds a piece of paper, then it’s working.

How to prevent A/C duct sweating on ceiling?
Learn how to do it on this page.

How to properly run ductwork in the attic?
Learn how to do it on this page.