Sub-freezing Weather UPDATE --- We froze the pipes!

Whizbang, the RV in your signature and your description of freezing pipes reminds me of one of our nights camping in late Sept in Western Montana at Bannock State Park. It was freezing weather and a Class C, the only other one in the campground ran their generator off and on all night I'm assuming so they could run their furnace. We set our furnace to 45, but it never kicked on as it didn't get to that temp inside our FW. In the morning I turned on the catalytic heater.