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Old 10-07-2015, 04:17 AM   #1
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RV antifreeze in MH hot water tank

I have a small trailer that I use for hunting and when I winterize I have to remove side panel and access is difficult. I have always avoided letting antifreeze enter hot water tank but I have never heard anyone state that having some enter the tank would permanently damage tank. I DO NOT have anode in tank. Question: Other than risking potentially foul smelling water, what is the danger of allowing RV antifreeze to enter hot water heater?


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Old 10-07-2015, 04:21 AM   #2
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None. RV antifreeze is not harmful to your water heater. Depending on make the tank is either steel or lined with porceline. Other than a litttle extra time to flush it out in spring, no harmful effects.

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Old 10-07-2015, 05:01 AM   #3
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And you'll need a lot of RV AF (6-gallons) if you are going to fill it. That's why the systems are set up so you can run it empty of water and just by-pass the tank.

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Old 10-07-2015, 05:03 AM   #4
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Just 6 more gallons of anti freeze to fill tank.
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Old 10-07-2015, 06:22 AM   #5
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That's 6 gallons MORE than what it would take to winterize it with water heater bypassed (at least). Even if you buy that 6 gallons of anti freeze on the cheap, it doesn't take long to justify doing whatever is required to bypass it.
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tank, water

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