Last week, I sanitized the fresh water system on my 2011 Keystone Montana 3400RL 5th Wheel. Now this cold snap will bring temps down to 25 degrees tonight. I used the Thetford system to sanitize ...
25 is not bad. Setting your furnace to 55 will give you zero problems. Last night we stayed in Fort Hall, ID. It was 18 and our furnace was at 60 (because we were in it).....no problems at all.