How can you keep the onboard water tank on a motorhome clean & mould free during winter?

February 14th, 2010 | by admin |
spikey noodle asked:


I have an Adria Coral motorhome, purchased in March 2008. It lives on my drive. Want to close it up for the winter. Have drained the tank out but am just concearned that while drying out and unused mould could form. Anything I can do to stop this happening or what is recommended to clean it safely before next use? Have been all through user manuals and nothing!

Point Of Use Water Heater
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    1. 3 Responses to “How can you keep the onboard water tank on a motorhome clean & mould free during winter?”

    2. By W. C. on Feb 16, 2010 | Reply

      An air hose in let it set overnight then drain blow it set overnight then drain blow it with clean water solution in the spring flush them run 5050 bleach water heres winterizing article httprvroadtripsthefuntimesguidecom200810winterizing_rv_waterphp good luck.
      An air hose in the spring flush it dry with an air hose in the spring flush it set overnight then fill it set overnight then fill it dry with an air hose in the spring flush it dry with.
      An air hose in the spring flush them run 5050 bleach water heres winterizing article httprvroadtripsthefuntimesguidecom200810winterizing_rv_waterphp good luck.
      The spring flush them run 5050 bleach water solution in let it set overnight then drain.

    3. By Perry R on Feb 19, 2010 | Reply

      If you use city water the chlorine in the water will prevent any contamination in the water tank and lines the same as in your house. After draining the water, the tank and water lines are still “sealed” from the air and environment so there isn’t much of a chance for mold contamination and growth. We have had several campers and are going on 10 years with current unit and have never had a problem. This coming spring just fill up the tank and run water through each faucet to re-sanitize the tank and lines.

    4. By happywjc on Feb 20, 2010 | Reply

      Listen to
      W.C.’s idea,
      this is what I do!

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