We routinely heated our house via a heatpump down to 20F in GA without any issues. I did the Manual J calculations myself for the house (it was a custom home) and speced the heatpump so I knew what to expect. I went with a two-speed compressor and 3 stages of auxiliary heat but the heating strips rarely came on, except when it went in defrost mode. The insulation was a bit over the top, which helped. Heatpumps have an easy job in The Villages because the winters are so mild.
Quote:
Originally Posted by villagetinker
Heat pumps work well below 45 degrees, I know this for a fact. When I had the one installed back up north, the "break even point" was to use the heat pump to around 22 degrees, and then after that us the gas hot water system.
|