Heat Pump question
Hey all, I live here in Spfld IL and as you all know the midwest has been experiencing some colder than usual temps. I've been searching the Internet for the correct answer and am finding some discrepancies so I thought to try here.
I have a band new heat pump that as installed this past summer and it's been a champ. However, during my list visit the HVAC guy told me during and ice storm and snow storm when the heat pump gets covered and cannot breathe, use emergency heat. Ok we've had to events for that to happen and it was OK.
Now that we are so very cold, the outside heat pump has run so much that I was worried about utility costs so I switched to emergency and of course the outside unit stopped and the inside air handler runs but much less.
What is the right answer here. I have read at HVAC sites that a heat pump will work up to -10 degrees but the emergency will also help, just keep the unit on normal heat. -OR- During this extended arctic chill, use emergency heat.
What is the right answer here??