DIYbanter - View Single Post - furnace blowing all the heat up the chimney

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wrote:
On Nov 4, 3:40 pm, ransley wrote:
On Nov 4, 2:20 pm, wrote:

I'm tired of people telling me that there's nothing wrong with my
furnace. There is something wrong with my furnace.

It's a 10-year-old Amana 45,000 BTU, 80% efficient unit in a 1300
square foot ranch style house. This is my 4th winter in this
house, and I'm sick of being limited to one habitable room all
winter.

The air coming out of the vents is cool, around 70 degreees
according to my thermometer. The exhaust to the chimney is
smokin' hot. The plenum does not get perceptibly warm.

I change the filter regularly. The old filter comes out visibly
just as clean as the new filter I put in. There is plenty of
airflow through the unit, as I can feel the cold draft hit my
feet from across the room when the furnace kicks in.

The flames are steady and clean blue.

I have to close off all the bedrooms and heat only the living
room and kitchen during the coldest months, otherwise the furnace
would run 24/7 and the temperature would never get above 62.

The pros say there's nothing wrong.

You do have AC right, have you actualy looked at the AC coil, my
neighbor got a house where the AC coil passed no air it was so
clogged, but you still need a Pro, not the hacks youve had out for
beer money.- Hide quoted text -

- Show quoted text -

I'm located in Rochester NY for the record, and I do have central
air.

There are two ratings on the furnace, one is 45,000BTU and the other
is 61,500BTU, but the furnace was made in Quebec and everything
written on it is in FRENCH! Online translators were no help in
figuring out what the tag says...

The two BTU ratings are input and output. With a 61,500 input, your furnace
in not designed to deliver 80% efficiency. You have less than 75% with a
45,000 output. Whatever the rating, you need someone competent to service
the furnace.