How long does the average tank last?
It depends on how much demand is placed on the tank by the appliance. Propane contains approximately 91,000 BTU's per gallon. If a consumer uses a propane tank to supply a grill that placed a 30,000 BTU per hour demand on the tank, a tank that has 3 gallons in it would last for about 9.1 hours. Variances in the weather as well as the rate of demand placed on the tank (such as operating the grill at demand levels above or below 30,000 BTU's) would either reduce or increase this time.
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