Sometimes we haven't been living in our coach for a few weeks when we're getting ready to leave our upstate NY cottage in January. I fire up the furnace with an external 30 lb LP cylinder connected to our Extend-A-Stay and set the temp to 50 deg.F a day or so before we leave. The external cylinder easily supplies it for that period and then some, and only costs $14 currently to refill. I boost the temp to a comfortable 70 deg.F a couple of hours before we leave and switch to the full onboard tank. We've never had a fridge issue when doing that, but this will be our first winter with a residential fridge installed, so we'll see how it goes this time. I don't expect to see much difference though. If the temp in the coach is below freezing, then of course the fridge interior will be too.
