20lb LP tank?

[da man cave shack]

How long should a 20lb LP tank last runing a mr.buddy little buddy heater?

[ice dawg]

You may need a calculator. Dunno. 

Instructions

1
Determine the British Thermal Unit per Hour (BTUH) rating of the furnace. This is located in the user manual or on a placard attached to the appliance. For this example, say your furnace has a BTUH of 26,000.

2
Convert the BTUH of the furnace into liquid propane pounds and gallons. 1 gallon of liquid propane weighs approximately 4.23 lbs. 1 gallon of liquid propane contains approximately 91,500 BTUs. A furnace with a rating of 26,000 BTUH would consume 1 gallon of liquid propane every 3.5 hours (91,500 / 26,000 = 3.5).

3
Calculate the length of time your propane tank can fuel the furnace. A standard portable 40-lb. propane tank holds approximately 5 gallons, or 22 lbs., of propane -- the rest of the weight is the tank itself. A standard stationary tank rated at 40 lbs. holds 9.5 gallons, or 40 lbs., of liquid propane. Multiply the burn rate calculated in the previous step (1 gallon every 3.5 hours) by the amount of propane in the tank. The 40-lb. portable tank can fuel the sample furnace for 17.5 hours (3.5 * 5 = 17.5). The 40-lb. stationary tank will last 33.25 hours (3.5 * 9.5 = 33.25).

[Gillfisher]

I fished a lot last winter due to lack of work and I used about 1 and 3/4 20 pound tanks, of course it was a mild winter also.

[Rebelss]

You may need a calculator. Dunno. 

Instructions

1
Determine the British Thermal Unit per Hour (BTUH) rating of the furnace. This is located in the user manual or on a placard attached to the appliance. For this example, say your furnace has a BTUH of 26,000.

2
Convert the BTUH of the furnace into liquid propane pounds and gallons. 1 gallon of liquid propane weighs approximately 4.23 lbs. 1 gallon of liquid propane contains approximately 91,500 BTUs. A furnace with a rating of 26,000 BTUH would consume 1 gallon of liquid propane every 3.5 hours (91,500 / 26,000 = 3.5).

3
Calculate the length of time your propane tank can fuel the furnace. A standard portable 40-lb. propane tank holds approximately 5 gallons, or 22 lbs., of propane -- the rest of the weight is the tank itself. A standard stationary tank rated at 40 lbs. holds 9.5 gallons, or 40 lbs., of liquid propane. Multiply the burn rate calculated in the previous step (1 gallon every 3.5 hours) by the amount of propane in the tank. The 40-lb. portable tank can fuel the sample furnace for 17.5 hours (3.5 * 5 = 17.5). The 40-lb. stationary tank will last 33.25 hours (3.5 * 9.5 = 33.25).

Will this vary depending on if I wear my long underwear? 

[Skipper]

I suppose I get 6hrs out of a 1lb green bomb on high... so if you carry the 5 and subtract the common denominator from the square root, It should last between 120 hours and a really really long time!

That's like five days non stop...

[da man cave shack]

Thanks ice dawg.

[ice dawg]

I suppose I get 6hrs out of a 1lb green bomb on high... so if you carry the 5 and subtract the common denominator from the square root, It should last between 120 hours and a really really long time!

That's like five days non stop...

Skipper, yer so teck-i-nickle. 

[ice dawg]

Thanks ice dawg.

Yer welcome.