Winterizing Yertle

We’ve had a couple of slightly and short-lived sub-freezing mornings here in the Rocky Mountains, so I winterized Yertle yesterday. Now I can sleep better.

I’ve read many of the debates on the Airstream forums, and they seem to break down into three camps. There are those who blow out the plumbing system with an air compressor hooked to the outside fresh water intake connection. ¬†There are those who pump RV antifreeze into the plumbing system through the water pump, bypassing the hot water tank. And there are those who use both methods. I chose both methods, and here’s the procedure I used. Maybe it’ll help other Airstreamers. Feel free to plagiarize/revise it. Also feel free to offer any suggestions for improvement.

Winterizing Yertle

Drain the black & gray water tanks at a dump station
Drain the hot water heater and the fresh water tank on the drive home or to the storage facility

Turn the valves in the closet to bypass the hot water tank
Close the two low point drain valves and the red fresh water tank drain valve
Close the hot water tank drain valve

Blow out the water lines by doing the following:
Hook up an air compressor to the outside fresh water intake connection
Open the sink faucet, first hot then cold, or vice versa, until the water flow nearly stops
Do the same with the sink faucet in the bathroom
Flush the toilet until the water flow nearly stops
Spray the toilet cleaner thingie into the toilet while flushing until the water flow stops
Disconnect the air compressor
Drain the gray water tank (optional)

Hook up the winterizing kit to the water pump
Change the flow direction of the bypass valve
Run the plastic tube into a gallon jug of RV antifreeze all the way to the bottom
Turn the main electrical unit to USE
Turn on the water pump and wait until the water lines fill with antifreeze
Then, open the sink faucet, first hot then cold, or vice versa, until the water runs pink
Do the same with the sink faucet in the bathroom
Flush the toilet until the water turns pink
Spray the toilet cleaner thingie into the toilet while flushing until the water turns pink
Turn off the water pump
Pour antifreeze into the shower drain to fill the trap
Disconnect the winterizing kit

Open the refrigerator door
Prop open the freezer door
Open the bathroom door
Open the closet door
Check that the windows and vents are closed and that the shades are drawn

Turn the main electrical unit to STORE

Install wheel covers

Close and lock the main entrance door

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