When to winterize in the SW

I do not consider it winterizing since I do it summer and winter. All I ever do is drain the fresh and blow air through the water lines. I also drain the black and grey. I do that any time I will not be using the RV for a few weeks. Doesn't take long and keeps things from going sour. The P-traps will get some antifreeze if it is going to be below 20 degrees for several hours, but that is generally not until Jan or Feb.

Never had a pipe freeze on the RV although I did have a few sprinkler heads freeze in the yard.

Captain_Happy wrote:
When the outside temps get down to 32 degrees and lower.

I try to stay just a few minutes ahead of that! Going joke at our house because I always seem to be doing it in the snow at night.

I Agree with Captain_Happy. We winter camp and watch the lows at night and the storms that come through. We're also farther South, so we open the low point drains, remove the anode and drain the water heater, blow the lines with the compressor then put pink stuff in all the drains. Never had an issue and the lowest was at 17 for several days in a row without any problems. When we get ready to go I just fill up hot water tank at our destination. New Mexico is a little colder than Arizona though.

When the outside temps get down to 32 degrees and lower.

I migrate to the sw to avoid having to winterize.