If your intention is to heat or cool air using as little electricity as possible, a basic heat pump split air conditioning unit is going to be more than adequate for 90% of people. If you live in a place like Yakutsk, then yeah, you probably need to look into something else, but for the vast majority of people it’s going to be just fine. A general recommendation doesn’t mean it’s the best choice for literally every single person.
If your intention is to heat or cool air using as little electricity as possible, a basic heat pump split air conditioning unit is going to be more than adequate for 90% of people. If you live in a place like Yakutsk, then yeah, you probably need to look into something else, but for the vast majority of people it’s going to be just fine. A general recommendation doesn’t mean it’s the best choice for literally every single person.