We just moved into a 2 year old house in Colorado and there are two
LARGE vents installed in the basement that are just open to the
exterior. One terminates up near the ceiling and one down near the
floor. Our realtor said something about "high/low" ventilation but I
can't find any reference to this using google or anywhere else. Does
anybody else have this thing and know why it's needed? I'm hoping to
insulate the basement to save on heating costs but what's the point if
I have two 8" holes in the side of my house letting cold air in?
Thanks in advance for any advice!
Having built many a home in Colorado Springs, I can tell you what that is
Combustion air vents.
Required by code,and if you have oil or gas heat, do NOT close or obscure
If you have a heat pump (doubtful there) then you can indeed close them off.
Its not the maker of the unit that requires it...its your code.
IF you were using say, an electric water heater, and a 90% or better sealed
combustion gas unit, you could do away with them.
Now, normally, these are in furnace rooms, and not in a living area. If they
are in a living area, you can get them moved....
You would be amazed at the amount of air that a 100,000 or better BTU oil
unit uses. That air is is going to be brought into the unit, either by way
of the combustion air vents, or around every door, window and other opening
in the home...better to be brought in close to the unit, and in an area that
isnt used as living space.
And you dont really lose that much heat...the room simply never gains that
much heat. What you feel in the area when the furnace is running, is what
normally would be finding its way into the home anyway.....scary in a way..
Its now just in a smaller area, so its more noticeable..
Are you using hydronics with a oil burner, or forced air with an oil burner?
If its forced, you might want to consider going to gas, and getting instead
a good 90% or higher furnace with sealed combustion...it would be cheaper
long term by far.
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