Go green with this Nest Learning Thermostat that helps you use less energy. Turn the heating up or down as you normally would, and within a few days it’ll take over, making sure it’s warm and toasty when you’re having breakfast, and cooler when you go out or you’re in bed. Coming home early? No problem – just use the app to tweak the settings so your house will feel just the way you like it when you get in. Plus, you can control your hot water tank, too, and set a heating schedule. What’s more, if you have a Google Assistant or an Alexa, you can change the temperature just by asking.

Please note, you’ll require help from a professional engineer to install this thermostat in your home. You’ll also need to download the free Nest app, which is compatible with all iOS and Android devices.