Our heat pump is having trouble keeping up on colder mornings. It's not just defrost kicking in, as it's blowing cold (less than the target temperature) for an hour or two some days. The heat strip is functioning, but I believe it's too small for our conditions:
- 35-40° outdoor temp
- trying to maintain 65° indoor temp
- ~1400 sq ft, Pacific NW
The unit has a 10kw heat strip, and has a list of supported models on the side (the upper end being 10kw). Assuming electrical can handle it (currently 60A breaker, 6AWG - I believe I'll need to add a 2nd 60A circuit), is there a reason I can't or shouldn't use a 15 or 20kw here? There are compatible models that look like they should work, aside from the exclusion on the label.