Thing works. heats in winter cools in summer using a dumb remote control. there are no smarts to this thing. Due to the remote control configuration, you can't get it to work with an aftermarket aircon control system (like Sensibo) to smarten it up because Fujitsu tried to be "smart" with their remote - problem is that if your internet-connected command thingy tries to control the aircon, the remote dumbly sits there and misses everything. I sorely miss my old Samsung wifi enabled wonder with the heating/cooling scheduling and phone app. If you want to come home to a warm house in winter or a cool house in summer - remember to leave this power hungry behemoth running while you're out!!!