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Posted by dnoyeB on March 4, 2007, 11:13 am
On Sun, 04 Mar 2007 04:58:31 -0800, jazon48 wrote:
> On Mar 3, 9:57 pm, "dave" <nospam> wrote:
>> I get a lot of dust in my house. I noticed the front panel on my
>> furnace is not even close to air tight. I can see through gaps and
>> holes directly into where the blower is (which is directly over the air
>> filter). So the blower is sucking in some air from the return line and
>> through the air filter, but a lot is coming through the gaps in the
>> panel. Should I somehow seal this panel better and force all air to
>> come from my air return vent which is located in the center hallway of
>> the house? I don't understand this design of a furnace which takes no
>> care in keeping dirty air from the garage out.
>>
>> Thanks,
>> DaveL
>
> If you have gas or oil, you are "sucking" air into the furnace
> room to support combustion and carry the fumes up the chimney. When
> running, a combustion furnace attempts to pull a vacuum on the whole
> house.
>
> The fact that your furnace panel doesn't seal well doesn't affect that
> whole house vacuum. It merely allows the furnace to draw air from the
> furnace room and distribute it through the registers.
>
> Building codes demand that garages be constructed to prevent garage air
> from entering the house (when any connecting door is closed of course).
> If you somehow know that "dirty garage air" is entering your house, then
> you have a problem with the doors and walls, not the furnace.
>
> In any case, around here, outside air is "dirtier" than garage air.
>
> You can seal the gaps in the panel if you wish. That will improve the
> ability of your system to heat the upstairs rooms.
>
> Jason
This is interesting. My garage is attached. My furnace is in my basement
which sort of borders the garage but not under it of course. I have a CO
detector in the basement which is mounted on the wall that sort of borders
the garage. If I run a car in the garage with the exhaust facing in,
within 2 minutes that CO detector will start sounding off. The basement
does not smell of fumes, but I am trusting the detector on this one.
So this would be a sign of poor construction? My house is only a few
years old. The return inside the house has a vent that exits the house on
the rear so I assume this is to equalize house pressure. So if any small
holes in my garage, then I assume air will suck in from there as well?
Thanks for any info.
dnoyeB
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