Gree Sapphire 12,000 It has
Gree Sapphire 12,000 It has been down to 16F and I cannot tell the difference in heat dropping off. It does go to defrost even at 39 degrees the same as when it was 16 degrees. It shuts down about ever 15 minutes and the temp drops about 3 or 4 degrees in the house. That is the only thing i would say is a Con. It has great heat out put. I am waiting on my first electric bill to see how much savings if any, but sure is saving on propane. It was installed about 4 week now.