Fresh water tank warmer

[Scott91370]

I was wondering if anybody has seen anything that could be attached to the fresh water tank in cold weather to keep it from freezing - or really brands they recommend. Usually the day time temps are good enough but at night it will get below freezing (sometimes only 30 but down to 0 is not out of the question) and I'd like something so I can put water in the tank, keep it just warm enough that it won't freeze. Then when it gets to the actual water heater it will get hot.

Thanks for any info you may have!!

[JimD]

My 2017 Greyhawk came with tank warmers but I haven't needed to use them here in Southern California. I did a quick search on Amazon for "rv tank warmer" and a bunch popped up. Good place to start.

[Jagiven]

X2 as JimD says, try amazon search engine and type in "RV Tank Heat". You can get them both in 12 volt dc and 120vac.

[ALJO]

It takes a while to freeze a mass of water around 33 degrees F.
I used heat tape around the tanks with R20 on top of the coroplast and are good for at least - 25C (-10 F) but where I live we don't see that often. A waterline under the floor would freeze quicker than in a heated cabin, so the suction line has heat tape the rest is all above the floor.

[Scott91370]

I looked at the ones on Amazon and, like a lot of things, they either work or don't so a little reading between the reviewers words is needed.
I'm thinking I'll get the 12v version in the larger 12x18 size. Cost is less than I thought they would be, which is always a plus.