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How Many Hours Does A 20lb Propane Tank Last?

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    It is totally dependent on what size your grill is, three burner , four burner, etc. I have a four burner grill and i
    would estimate that it will burn a minimum of 40 hours.
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    Fishwiz 

    answered 8 months ago

      You can calculate your burn time based on BTU usage of your grill.  A 20 pound propane tank contains 4.73 gallons of LPG. 1 gallon of LPG contains 91,690 BTUs.  This gives a total of  433,693.7 BTUs of energy.  Now, look on your grill for the BTU/hour output.  For example, I have a 4-burner (477 square inch cooking area), 50,000BTU/hr grill, so a full tank will give me 8.67 hours with all 4 burners on high.  A smaller grill will obviously require less fuel, and therefor increase your burn time per tank of propane.
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      Guest

      Guest 

      answered 8 months ago

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