It's about 20º and blowing hard outside, so hard that my husband said that when he came back from the barn that it felt and sounded like a jet engine was coming around the house. But, the great thing is ... we aren't burning any oil !!!!!!!!! Not a drop, and that feels soooo good. Especially on a night like this one when the wind hits the windows so hard it sounds like something is being thrown against them. I am so very glad I decided to convert to a geothermal system. I keep checking the thermostat and while the system has been running on stage 2, it has yet to call for electric back up. Our house is comfortable, even though it rattles and shakes from the storm. In years past, it used to get downright cold on nights like this even with the furnace pounding away burning oil as fast as it could. If anyone has any doubts about geothermal, please relinquish them. The system truly does work beautifully. If it can handle my leaky antique house, just think how easily it can handle a new one.