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Atwood Heater and propane usage.


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#11 teledork

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Posted 25 August 2022 - 12:20 AM

I spend many nights  in my AT Bobcat every winter - often in teens and an occasional single digit morning. I rarely run the heater in the evening ( ski until almost sundown, eat dinner wearing long underwear and a sweater, get into bed with a mug of hot tea and a book - in a down bag beneath a comforter with a dog) ) and don't turn it back on until maybe 5 am and run it for maybe two hours before I take off to ski again. I do not have a reefer or anything else that runs on propane and a full tank can last me almost a year.  I do have the insulating lining.  


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#12 2Z Bundok

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Posted 03 September 2022 - 12:52 PM

So a gallon of Propane has 91,452 BTUs / hr.  Our Atwood furnace uses 16,000 BTU / hr input.  The normal 20# tank holds about 4.2gal.

 

91452 x 4.2 รท 16,000 (use your number here) = 24 hours of running time heater only.  Your mileage may vary!

 

We also use ours for cooking and hot water.  With no room for another tank I wish I had a better gauge for the tank.


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#13 buckland

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Posted 03 September 2022 - 01:19 PM

2Z Thanks for that... straight forward math and I realize there are a lot of variables that will change the outcome but it is a good ballpark to have. We cook and will use heater at night. I have two 10 pound tanks (so each 2.1 gallons approx.) in the box and carry a third 10 pound tank. The one in use has a gauge but it also is not super accurate (temp and elevation). But with your formula with 30 pounds it would have at the least 36 hours run time. As the heater comes on and off at night and cooking I can see I will have to either ration the heat or run out of propane for 9 days out in winter in Texas. I do not like the sound of the heater cycling on and off while sleeping so will probably run it before bed and then just bundle up. Thanks again


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#14 DavidGraves

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Posted 03 September 2022 - 01:53 PM

Buckland

 

How about a really long flex hose from home ?

 

DG


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