Can I Leave My RV's Holding Tanks Full During The Winter?

by Scott
(Bow NH)

I just got a used Class A Motorhome and the black water and gray water tanks are full and it is going to snow. I found that I have no hose to drain the tanks. Will it damage the tanks to leave them full over the winter? If so is there anything I can do to prevent damage to the tanks if I can't get them drained.

I've never had an RV so any help you can give me will be greatly appreciated.

ANSWER: Hi Scott thanks for submitting your question on our Ask An RV Question Page.

Considering where you live, I would not recommend leaving any liquid in any of your holding tanks. The chances are good that they could freeze and expand and damage your holding tanks.

RV Sewer Hoses are inexpensive and I am sure that you can find a convenient dump station in your area, so I would suggest that you dump your black and grey water holding tanks as soon as possible.

Since you are new to RVing I also suggest that you read the article Winterizing Your Motorhome so you can take all the steps needed to properly winterize your RV.

Hope this helps.

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Happy RVing

RVing Al

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