Thread: furnace BTU
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Ed Pawlowski Ed Pawlowski is offline
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Default furnace BTU
On 12/24/2013 5:01 PM, wrote:

I know that when I replaced my 25 year old gas furnace with a 93%
efficient one, my gas usage dropped over 40%. I'd be surprised that
reducing the orrifice size would make much difference in efficiency.


Reducing the orifice size just makes it run longer to even out
temperature fluctuations. Still lots of heat going up the stack.

If you are in a cold climate, most anything over 30 years is wasting
your money.
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