Forum Discussion
donn0128
Jan 03, 2014Explorer II
beemerphile1 wrote:donn0128 wrote:
Propane contains approx 90,000 BTU of energy as I remember. So if you have a 25,000 BTU furnace that means your furnace will burn approx 1/3 gallon per hour of running time.
Only if that is 25,000 input BTU. Output BTU isn't used for this calculation.
Furnaces are rated listing the input not the output as far as I know.
So OP indicated his furnace was 25K BTU.
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