Originally Posted by DrJMB
Found the panel and hopefully all water is drain.
I used lp air to blow out all my water lines. I considered running antifreeze through my water lines using a hand pump connected to the city water connect outside and drawing off the bottle. This is when you want to bypass the hot water heater (after it is drained/blown out) so you don't waste filling the six gallon tank with antifreeze. I decided against the antifreeze since I was confident my lines were dry.
I also removed my water filter and made sure the housing was empty.
I used about 3 gallons of antifreeze to fill the drain traps and above the toilet valve and into the black and grey tanks.