Our heat pump didn’t really kick in the resistive auxiliary heat until temps were well below 0°F, but humidity also plays into that. It wasn’t ever running the resistive heat exclusively.
If sized correctly, heat pumps also don’t really like setbacks in the winter. Just set the thermostat to whatever and leave it – don’t have it cool down at night and warm back up in the morning.
The super credits used to unlock the second battle pass can also be found in game in a relatively healthy amount (including in the first battle pass), making unlocking that second battle pass very possible without spending real currency.