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pcampbell 11-30-2008 09:41 AM

EnergyStar furnace blower?
 
For something we use so often (forced hot air heat and A/C so we are using it all year round bsaically) is there such thing as a replacement EnergyStar blower motor. It is a ~2002 Trane XR80. On a sidenote is there any way to reclaim or reuse some of the massive amounts of heat that go up the power vent?

yuri 11-30-2008 11:02 AM

No and no. The new variable speed furnaces like a Lennox G61V use a special high efficiency ECM (electronically commutated DC motor) which needs a circuit board to control it and that has to be specifically designed for your furnace. No retrofits that I am aware of. If you cool down the smoke to the chimney it will condense and water will flow back to the furnace. Sorry.

hvaclover 11-30-2008 11:24 AM

Why didn't you pop for a 90%er back in 2002?

beenthere 11-30-2008 11:48 AM

Quote:

Originally Posted by pcampbell (Post 191695)
For something we use so often (forced hot air heat and A/C so we are using it all year round bsaically) is there such thing as a replacement EnergyStar blower motor.

They are working on it for furnaces, but its not available yet.

It is a ~2002 Trane XR80. On a sidenote is there any way to reclaim or reuse some of the massive amounts of heat that go up the power vent?

That would be called a 90% furnace.

Just a FYI. That is NOT a power vent. Or it wouldn't be allowed to vent into a masonary or B vent chimney.

pcampbell 11-30-2008 12:14 PM

We did not put the XR80 in... it was there when we bought the house.

The existing furnace is... I am not sure what you would call the vent. It is definitely assisted with the blower, and goes right through the roof with a steel pipe. It's not direct vent, at least in the sense that it does not draw outside air.

I do not see the XR80 going anywhere any time soon... so just trying to work with what we have. Figure if Icould swap in an EnergyStar 500 watt motor over a 1000 watt motor that gets several hours use per day, it could make a big difference. Oh well...

beenthere 11-30-2008 01:53 PM

Its probably B vent.
Its only rated for negative draft systems, which is what your XR is rated for.

An inducer, on an 80%, is not a blower to blow the exhaust out the pipe.
It only creates a slight negative draft inside the heat exchanger.

If it created positive pressure to blow the exhaust out, you wouldn't be allowed to use B vent on it.
Nor would you be able to vent a water heater into the same chimney as an 80% induced draft furnace..


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