I have mixed feelings about heat pumps. Where we live winters aren't too harsh - our coldest night would be around -18C and for the most part January/February hovers around -10C at night. Our main heating is oil-based hot water baseboard radiator which I think is THE BEST type of heating solution from comfort standpoint. But few years ago we installed two mini-split heat-pumps which work great and save us a ton of money - BUT they don't heat the house evenly and you must leave all indoor doors open for effective heating. There is an option to convert the main heating to a geothermal heat-pump heating up the water but that is quite an expensive solution right now. For now I am never giving up oil in the foreseeable future.