Gas furnace consumption

camiarrobino

I had a 60k BTU 96% Trane furnace installed. Considering a therm of natural gas is 100,000 BTU, if this furnace runs for 1 hour, will I consume 0.6 therms of natural gas?

mattmia2

yes, if it is single stage. it probably is multi stage or modulating so it will consume less if controlled properly

camiarrobino

mattmia2 said:

yes, if it is single stage. it probably is multi stage or modulating so it will consume less if controlled properly

I believe it is just single stage. It's an A951

EBEBRATT-Ed

It will burn .6 therms in an hour if the gas is burning for the entire time.

pecmsg

camiarrobino said:

I had a 60k BTU 96% Trane furnace installed. Considering a therm of natural gas is 100,000 BTU, if this furnace runs for 1 hour, will I consume 0.6 therms of natural gas?

That furnace will only run nonstop when at or below design conditions. Thats only 2 or 3% of the total time its operating.

Mustangman

Is this natural gas? If so, you can clock your gas meter and find out how many BTUs you are using. Its pretty simple to do. You need to use your stop watch app on your phone.Find the cubic foot dial. Turn the stat way up. See how many seconds it takes to burn one cubic foot. Lets say it took 44 seconds.
3600 sec in an hour 3600 x 1 cubic foot= 3600 divided by the 44 seconds = 81.82. There are 1050 BTUs per cubic foot of gas sooo 81.82 is the cubic feet of gas burned in one hour x 1050 BTUs = 85,911 Input. This is a great tool. If there is a question about the boiler producing what it should, this little bit of math will save your butt.
Steve

captainco

If left at factory settings its input is probably lower

GGross

He's got a good point, our "70k" furnaces as they are labeled are actually 66,000 BTU input for example.