freeze protection

Hi - Am interested in adding water tank heating pads to help in the shoulder seasons when temps may dip down below freezing. A couple of questions: 1. Is it worth protecting the tanks if you don't protect the supply lines, valves, etc...? 2. Most of the pads I see that are commercially...

Hi all, new owner of 1995 10' cabover Alaskan in excellent condition. Read the OEM manual for winterizing the water system and have a few questions since its very vague. 1. has anyone used an air pressure adapter to the outside city water connector to blow out the lines and if so what PSI is...