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Can A Space Heater Protect My RV Fresh And Gray Water Tanks ?  

Published 09/30/2025

Question:

Can I use the 800W heater to protect my RV’s fresh and gray tanks if the bays are separate?

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Expert Reply:

Jennifer, the Xtreme heaters are built to protect enclosed compartments like pump bays, plumbing manifolds, and battery spaces -not the tanks themselves if they’re hanging exposed under the RV. Many travel trailers and fifth wheels have black and gray tanks suspended outside, and in that case you’d need tank heating pads instead of a compartment heater.

If your rig has an enclosed underbelly where all the tanks and plumbing are together in one large cavity, then the 800W # XH27FR would work just fine.

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Andrew N
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