Winterize Travel Trailer Water Lines. Blow out all the water lines by repeating the process 10 and 11. Let that run for a few seconds and then turn the air compressor off and reinstall the drain plug.
Find the low point drain lines. Turn the air back on. Winterization chemicals you ll add to your unit will damage any water filters.
Filling the water lines with rv antifreeze you should still blow out the water lines with your air compressor first.
Bypass the water heater using a bypass kit. Your hot water cold water and freshwater lines all need to be cleared and there is usually but not always one drain for each system. Let that run for a few seconds and then turn the air compressor off and reinstall the drain plug. It s pretty easy to winterize your camper or rv but how the heck you you winterize and get antifreeze into the camper water inlet pipe.