How Long Will A 20Lb Propane Tank Last On A Fire Pit in How To

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How Long Will A 20Lb Propane Tank Last On A Fire Pit. A pound (not gallon) of propane has about 21,600 btus gross heat input. A 20lb propane tank contains 430,000 btu.

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A 20lb propane tank contains 430,000 btu. Having said this, a 40,000 btu fire pit should last about 10 hours at a moderate usage/flame level. How long does a 20 lb tank last.

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Hereof, how many hours does a 20 pound propane tank last? Propane cylinder will last for up to 10 hours in an outdoor gas heater. If the homeowner prefers a higher setting, the tank won’t last as long. For the fire pit, a 20# propane tank will last approximately 4 to 4 ½ hours at a continuous burn at the maximum output.