4 ms·
Yes - defrost means turning on Aux heat with the HP in A/C mode.
by Aloha 3y ago
Yes - defrost means turning on Aux heat with the HP in A/C mode.
- amluto 3y agoAnd can it do that by itself at the correct time?
- Aloha 3y agoYes, in the same way your Electric Furnace is turned on to do defrost with a Heat Pump, it just fires up the furnace for 3-5 min.
- amluto 3y agoMy heat pump defrosts itself under its own internal control.
- lsllc 3y agoIt just switches to cooling mode and activates the AUX heat to dump heat into the outdoor coils for a minute or two and then goes back to heating. The AUX heat is just a thermostat relay closing, so it can activate an electric-resistive coil (as is typical) or it can turn on the circulator pump for a gas fired boiler for a hydronic loop in the air handler.