Winterizing

The first thing is to switch the hot water heater to bypass mode. Then remove the drain/electrode so it drains completely. I leave mine out until spring. Drain the fresh water tank if it isn't empty already. Since you have a '22, you probably have a valve that switches the water pump input from fresh water tank to a siphon hose. Switch that to the siphon hose. If that valve isn't there, put about 4 - 6 gallons of RV/Marine antifreeze in the fresh water tank. Close all of the water valves, the low point behind the wheel and all faucets. Turn on the water pump and let it pump from a gallon of the RV/Marine antifreeze. One by one, starting closest to the pump, open the hot and cold faucets until you get a steady stream of AF coming out. Turn those off and go to the next in line. Don't forget the external shower and flush the toilet until the AF comes out. When you are done, you'll have AF in the pump, all the lines, all the faucets, and all the P-traps. Any remaining AF, you can add to the p-traps and/or dump into the toilet.

You can raise or lower the tongue to get more AF to the pickup point in the fresh water tank if you have to put AF in there. My trailers usually take 4 - 6 gallons of AF if it goes into the fresh water tank, and about 2 gallons if I use the siphon hose on my latest TT.

Go through the manual for winterizing and any appliance specific directions.

RV/Marine antifreeze at Walmart is about $4 a gallon. $24 is cheap insurance to prevent having to R&R faucets and water lines.

It usually takes me 30 - 60 minutes to winterize. The flush and disinfecting water lines in the spring is much more time consuming but probably more important.

Good luck

Thank you very much. I appreciate your thorough responses.