Outside or inside combustion air?
I am having a new gas furnace (95 percent efficient) installed on Friday and am undecided on whether to have combustion air piped from outside or drawn from basement.
The contractor is willing to do both and it is my preference. Intake pipe will be neatly run next to the exhaust pipe. I will have to put some vents in the door to the mechanical room in order to meet the volume/BTU requirement if I go with inside air. Not a big deal, have already purchased the vents.
Anyone have quick thoughts on this matter?
Last edited by Johndel; 12-06-2007 at 12:36 AM.
Always pipe in your combustion air... that's an easy one.
If you are drawing from inside your house, then you're blowing that air outside. That air has to be made up (which is why you have to vent that room with the loovered door). Usually the air is made up by leaks around windows, cracks, etc. Now you're bringing in unconditioned air that's not filtered into your house to make up for the air you've heated and conditioned you're blowing out the exhaust of the furnace.
I betcha you'll get a 100% vote here to pull in the combustion air from outside
"If you call that hard work, a koala’s life would look heroic."
Originally Posted by amickracing
Where are you? Are you done yet? I got ONE more call for you.....
Definitely pipe in your combustion air.
I am only surprised at the fact the contractor is making this an "option."
all the best, Irish
Everyone has a purpose in life..........even if it's to be a bad example.
Seek first to understand, before seeking to be understood.
100% outdoor air for combustion, we will not do it any other way.
100% outside here in my book!
If you don't want the ugly goose neck look, request the BAYVENT.
I'm more surprised that the contractor even gave the customer the option to have it piped from outdoors.
Originally Posted by Irishmist
Ditto to the "pull it from outdoors" crowd.