Wyoming RV Sales & Rentals Blog

  • Published on Sep 23, 2013

    RV Winterization

    It’s that time of year when the leaves on the trees will start to change colors, and the number of days until the first snowfall is getting closer.  For some of you, this means it’s time to start thinking about winterizing your RV's plumbing system. Sonny’s RVs in Casper, WY staff of professionals at our RV Service Department & RV Parts Store can handle any and all of your RV winterizing needs. Call our Casper RV Dealership today to make an appointment with one of our Certified RV Technicians at 307-237-5000. If you are brave enough to take on the process yourself, here are some steps to take to get your RV ready for the cold Wyoming winter.

    First things first, check your RV owner’s manual for any unit specific guidelines.  Once you've done that, make sure you have the following items handy to ensure your unit is prepared correctly.

    RV Winterizing Supplies Checklist:

    • Non toxic RV antifreeze- 2 to 3 gallons is usually enough
    • Water heater bypass kit
    • Wand to clean holding tanks
    • Water pump converter kit, or tubing line to connect to inlet side of water pump
    • Hand tools to remove drain plugs

    Once you have all your RV winterizing supplies, you can begin to complete the following steps. Remember to refer to owner’s manual for location of all components.

    RV  Winterization Steps:

    1.  Remove and bypass the inline water filters.
    2. Drain your fresh water holding tank.
    3. Drain and flush both the black and gray holding tanks (products like Flush King will clean both).
    4. Lubricate the termination valves with WD-40.
    5. Drain the water heater by removing the drain plug and opening the pressure valves.
    6. Open all faucets including ones in the shower and bathroom.
    7. Locate and open the low-point drain lines.  You can turn the water pump on to force all water out but be sure to turn off once drained.
    8.  Recap all the drains and close the faucets.
    9. Bypass the water heater- if there is no bypass kit the water heater will fill up with    antifreeze before making its way through the water lines, wasting 6 gallons of antifreeze.
    10. Install the water pump converter kit, or disconnect the inlet side of the water pump.
    11.  Connect a clear tube to the inlet side of the water pump and insert the other end in a gallon of antifreeze.
    12. Turn the pump on and pressurize the system, turning on all the faucets starting with the closest. Flush the toilet until antifreeze appears. Once the antifreeze appears, turn the pump off and open a faucet to release the pressure.
    13. Go to the city water inlet located outside your unit, remove the screen and push on the valve with a small screwdriver until antifreeze appears.  Replace the screen.
    14. Pour a cup of antifreeze down each drain and pour 2 cups into toilet and flush into your holding tank.
    15. If your water heater is electric, make sure it is unplugged and turned off.
    16. Make sure all faucets are closed and you are done!

    The information above for winterizing your RV is from KOA's blog's The Greater Outdoors Polk, Mark J. "RV101: 7 Easy Steps to Winterizing Your RV Plumbing System." Web log  post. KOA Blog's The Greater Outdoors. KOA, 04 Oct. 2011. Web. 23 Sept. 2013.  <http://blog.koa.com/rv101-7-easy-steps-to-winterizing-your-rv-plumbing-system/>.

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