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Old 05-23-2011, 06:02 PM   #1
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darryl97420's Avatar
1974 Argosy 28
Coos Bay , Oregon
Join Date: Aug 2005
Posts: 77
120 vs 140 degree hot water

There have been several threads about the new Atwood water heaters being set at 140 degrees and am now wondering if I shouldn't kick my older water heater up a bit. I do understand that I will be using more propane to heat the water.

I am currently using 20 lbs every 2 weeks with the thermostat set at 120. Has anyone turned up their older water heater from 120 to 140? How much additional propane did you consume? Did you see more usable hot water?

Any advantages or disadvantages?

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Old 05-23-2011, 07:46 PM   #2
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Six seconds of 140 degree water on you will give you 3rd degree burns. I find 120 degree water works just fine and safe.

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Old 05-23-2011, 10:51 PM   #3
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140 is too hot for me. I keep mine just above the Warm setting except in cold weather when I set it in the middle to compensate for the colder water coming in.
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Old 05-24-2011, 05:52 AM   #4
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2011 27 FB International
'03 F250 PSD , Airstream summers, Catalac winters
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Whatever the temp is in our brand new airstream, it's too hot. Relying on mixing valves to keep people from hurting themselves is a mistake as far as I am concerned. If I could turn this new one down, I would. But there is no temp control on it. I've read that I can replace a thermistor and lower it, and I intend to do that at the first opportunity. I don't need THAT much hot water, and less hot is just fine with me.

If I had been able to spec a water heater, I would have gone with an older model with temp control.
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