[legion]

I lived in Georgia for the winter of 2014/2015, when it actually got and stayed below freezing for over a week. Heat strips are fine when they run a couple of times a year to bring the temp in the house up, but are ridiculously expensive to run continuously. Further, if the outside temp gets and stays below 20º for any length of time, they won't do a great job of heating your house any way. I remember people I knew with heat strips have indoor temperatures drop into the 50s and getting power bills in the $600-700 range after that winter. I had a natural gas furnace and got through the week just fine and only paid a little extra.

My advice? Call a different HVAC tech.