This is mainly for the people that keep sulcatas in areas that get very cold during the winter months like me. Some time this afternoon I believe Walkers my 27 year old sulcata electric oil radiator heater stopped working. But since his 8x8 house is very well insulated it's not an immediate emergency that I have to tend to in the dark tonight. He has 3 heat sources the oil heater a Stanfield heat mat, and a CHE as backup. So I turned the CHE on which is almost never used and blocked his door off which is usually left open. I suspect that the radiator heater has gone bad because it's been used since 2008 without adjustment. The heat sources are important but I believe the proper insulation is just as important especially when something like this happens. We got down to 26F last night and right now it's 35F outside and his house temperature is 83.7F and rising. So if it's the electric oil heater I will put another heater that I already have as a stand by, just in case this was to happen in place of the bad one. We both can sleep safely and well tonight