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Old 01-19-2022, 09:40 AM   #1
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High Propane Usage for Berkshire 39A?

We've been parked and plugged into the 50 amp at an RV park for two weeks and my propane tank was full at the beginning but now is only at 25% full. Any tips on what may be using so much propane? We've had the Truma water heater on the eco setting and for heat we are using the heat pump but it was cold enough a couple of nights (40 degrees) where the furnace kicked on when the heat pump when into lockdown mode.
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Old 01-19-2022, 10:04 AM   #2
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How large is the propane tank on your Berk?

40º nights can use a lot of propane through the furnace depending on the thermostat setting.

With the somewhat unseasonably cooler weather we are experiencing here in north central FL (40º nights) I've been using about 7 gal a week (one 30 Lb. tank) even supplementing with electric heat.
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Old 01-19-2022, 11:31 AM   #3
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I believe it is 10 gallons but the numbers are illegible on the tank. When I was out there I noticed the gauge on the tank actually shows the tank at 75% full so now I'm thinking the internal Precision Plus gauge may be incorrect.
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Old 01-19-2022, 07:02 PM   #4
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39A should be 24.5 gallons. They are only filled to 75 - 80%, so call it 18-19 gallons. It's going to be the furnace that is using most of the propane. On demand
water heater and stove don't put a dent in the propane usage. If you have and electric fireplace, use it.
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Old 01-20-2022, 11:53 AM   #5
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I worked around propane appliances for nine years. There are 22,500 BTUs in a pound of propane. There are 4.24 lbs. of propane in a gallon (US). If you have a 30,000 or 40,000 BTU furnace in your unit that will consume 2lbs. or half a gallon per hour of operation. Of course no furnace runs full time but this will give you an idea of what to expect. Our Tiffin 40TSP Allegro Bus had a 60,000 BTU furnace and a 35 gallon tank.

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Old 01-20-2022, 11:55 AM   #6
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In January of last year, we camped in 10 degree overnight weather! With both furnaces going, we found that much propane will last about three days. So, we bought two space heaters (and one small one for the wet bay) and turned on the fake fireplace. Since electric was included with our parking slot, it was basically free. We did get up twice during the night and turned on the furnaces to bring the temp back up a bit, but then turned them off. Yes, these were extreme conditions, but at least we learned what is possible. In emergency conditions, bring in the slides. That reduces the amount of exterior surface exposed to the low temperatures and additionally gives you half as much space to heat.
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Old 01-20-2022, 12:43 PM   #7
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I’d sure believe the guage on the tank versus the plex. It may need a reset or tweek sounds like. With thoughtful use you can squeeze quite a bit of use out of a full tank.
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Old 01-21-2022, 08:51 AM   #8
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We’d run out of propane on our 5 th wheel a few times. So when we bought our Berkshire and started using it in cooler weather we bought 2 small footprint ceramic heaters. Both in the main area it stays comfy, at night I move one into our back bath for it and bed. It can keep that area toasty we also use a dual control electric blanket.
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Old 01-21-2022, 09:52 AM   #9
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in real cold weather I occasionally pull in some of the slides to make the heating area smaller and tighter.
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Old 01-23-2022, 10:05 AM   #10
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Quote:
Originally Posted by Igave View Post
I’d sure believe the guage on the tank versus the plex. It may need a reset or tweek sounds like. With thoughtful use you can squeeze quite a bit of use out of a full tank.
My Plex displays about 1/4 tank less difference than the gauge on the tank. So if it say 1/4 it's really 1/2 full. When it gets down to 1/4 on the tank gauge, it tends to sit there for a long time. I watched it once when I knew that a mobile propane truck would come by the CG once a week. I was surprise how long I was able to go after it hit the 1/4 mark. I went an additional week with the furnace running periodically at night when it dipped into the 30's and 40's.
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Old 01-24-2022, 10:38 AM   #11
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What year is your 39A?
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Old 01-24-2022, 10:40 AM   #12
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I ask what year because that will help determine what things run off of propane in the coach. one thing you might want to look at is if your water heater is in eco mode or not.
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Old 01-24-2022, 02:11 PM   #13
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Year?

2021. Thanks
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Old 01-24-2022, 03:45 PM   #14
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So with your coach, I believe you have three items that run off LP, the furnaces, the water heater, and the cooktop. I would check the water heater and try putting it on eco mode, that should help conserve the LP some what. Also are u having to run the furnaces, if so for how long?
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Old 01-24-2022, 03:50 PM   #15
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Heres the truma instructions for eco mode and the difference
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Old 01-25-2022, 08:39 AM   #16
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Originally Posted by Eric B FR Diesel View Post
So with your coach, I believe you have three items that run off LP, the furnaces, the water heater, and the cooktop. I would check the water heater and try putting it on eco mode, that should help conserve the LP some what. Also are u having to run the furnaces, if so for how long?
And if not in ECO mode you will hear it cycling on and off throughout the day/night.
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