Nest 3rd Edition
(€249 from Harvey Norman)
There are quite a few smart thermostats out there, but Nest arguably stands above the fray for a couple of reasons. First, its movement sensors can tell when you’re in a room or not. Second, it works with your phone to instantly turn the heating off if you leave the house (by knowing your phone’s location via GPS). As with rival devices, you have full control with your phone.