Thank you all those leaving opinions and advise on an earlier post. Very helpful indeed. I have been told you can buy a thermostat that will allow you to turn the heat lower than the normal 50 degrees. Can anyone verify this and do you have an estimated cost. My plan is to wintewrize but heat minimally, hoping this system with a back up will protect our property with out costing an arm and a leg. Thanks again for your professional opinions.