Few things can fuck an RV up worse than a frozen water system. Grey, black and potable water tanks, water pumps and the delicate tubing that run through the undercarriage and into the living area of a motorhome don't do well when exposed to subzero temperatures. Some RVs, like ours, come with blowers that force warm air from the furnace into the undercarriage. Others, like our old rig, have systems that draw power from the chassis battery to keep the tanks heated and the liquid inside of them, well, liquid.
We started our first day headed south at -4° Celsius. We assumed that we'd be able to make it to Lethbridge, Alberta, a few hours south of Calgary. The overnight temperature would dip to -10° there. Fading headlights and the encroaching dark forced to a halt, short of our goal, in Claresholm. There, the overnight temperature dipped to -17°.
We knew that we could weather the weather in Lethbridge. Claresholm, cold as it was, would have been a test we weren't prepared to sit for. Fortunately, we were able to find a hotel. Even more fortunate was the fact that we'd winterized our RV well before the first cold. Our tanks were drained dry. Our lines were wetted with anti-freeze. For the first three days of our trip south, we traveled without any water, save what we brought with us in bottles. We used it to flush our toilet, brush our teeth, make coffee and wash. On the end of the third night, we felt it warm enough to risk de-winterizing the RV. Read the rest