Propane consuption guide
Here is a simple way of calculating your fuel needs when using a propane heater:
The basic rule:
At -17°C one 100 lb tank provides 64,000 BTU
At -7°C one 100 lb tank provides 94,000 BTU
Just divide your BTU needs by 64,000 or 94,000.
||A 300,000 BTU heater, temperature where the cylinders are located is -17°C
300,000 BTU/64,000 BTU = 4,69 cylinders
Since the law prohibits connecting more than 4 tanks of propane to a single piece of equipment, using 100 lbs tanks is not recommended to get maximum output.