De-winterizing your RV

When you winterized your RV, you ran antifreeze through all your water lines (except the water heater which was bypassed), and drain all holding tanks. When you de-winterize your RV, you must flush all the antifreeze out of the lines by running fresh water through them. 

Close Up All Tanks

  • Cap/Close Fresh Water Tank
  • Close Waste and Grey Water Tanks
  • Close Drain on Water Heater by Replacing the Anode Rod or Drain Cap (depending on your water heater)
  • Cap/Close Low Point Drains

Locate the back of the water heater

  • The front of the water heater is easily located on outside of camper, the backside of the water heater will be inside the camper at the same spot.
  • Turn valves to unbypass the water heater so you can have hot water when camping

Flush out all Antifreeze

  • Connect to city water
  • Open all faucets, showers (inside and outside), and flush the toilet until water runs clear at all locations
  • Don’t forget to run both hot and cold water to clear all lines

Check Water Pump

  • Locate the water pump. If you are unsure of its location, turn it on and listen for a humming noise to help you find it.
  • If you have a winterizing kit installed on the water pump, make sure the valve is turned to draw water from the fresh water tank, rather than the winterizing line.

Freshen Up

To help clear the lines of any antifreeze residue and odors use a Fresh Water System Cleaner like Spring Fresh.

  • Disconnect from City Water
  • Dump Spring Fresh into the fresh water tank (half a gallon will do if you want to save the rest for later)
  • Fill fresh water tank the rest of the way with water
  • Turn on water pump and open all faucets once again to flush the lines
  • Keep water running until fresh water tank is empty (may need to dump gray water tank before starting if you just ran city water through the lines).

Bonus Tip: Check Roof

Regular roof maintenance will help keep you camper in good shape for many years. Check for cracks or tears and seal with Dicor Lap Sealant if you find any.


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