DO not use your water system when it is below freezing. You can buy some windshield washer solution to pour in toilet to flush but do not use water in rig at all when it is freezing out. NOW if you can thaw out your pipes, get a thing that screws into your city water inlet in the rig, and use a compressor and blow out your pipes of water with a faucet turned on and when no more water comes out go to the next faucet but at no time close one before you open the next. Do that to the toilet and shower as well. Pull your low point drains to drain out what you can before blowing out the pipes. Drain your hot water heater and your grey and black water tanks. You should be ok. MOST trailers and Motorhomes are NOT made to live in 24/7 and some actually will void the warranty if they find out you are living in it. IF you have a stick house than that is good, you just say you are traveling extensively now. HOPE it all works!!
