Originally Posted by f1100turbo
Yes you can add tank heaters.
Unless your going to camp thru winter at temps below 20 sustained then not worth it imo.
What are your reasons for adding ?
Agreed. We camp all winter in North Carolina without heated tanks. Our dealer's service department talked us out of adding $800 heated pads. Told us that unless the tanks are full with no space for expansion, freezing won't hurt anything, anyway.
We have never had problems with this in 8 years of camping all winter. As you say, unless the freezing tempeatures are sustained, not much to worry about. We just detach (and empty) fresh water hose at night and hook back up the next morning. Never a problem despite some nights down to 15 or 20.
We leave our gray tank valve open when we have hookups, and everything we put in the black tank is 98.6 degrees LOL. If it does freeze, we'll dump it when it thaws out. But it never has.