>>713318612all ductless units sold(at least in the US) are heat pumps, so it's pretty standard now. for a window unit heat pump they're fine, but PTAC(packaged thermal air conditioners) units are better but require installation through the wall
>>713318703depends on the efficiency of your unit, there's programmable thermostats where you can set a schedule, theyre fidgety to figure out. if your house cools quickly, just turn it on when youre home, otherwise leave it running at a higher temperature during the day then lower it when you get home
>>713318780no, these are bad. theyre taking outdoor air, which is hot, and circulating it into the room, that youre trying to cool down, only to exhaust it again outside. im surprised theyre allowed to sell these