A smart thermostat is essentially a device that connects your home’s heating system to the internet and allows you to alter the temperature or turn the heating on or off, remotely. Manufacturers claim this can cut your heating bills by 25%, although there is a cost to buying and installing the thermostats, which start at around £140. Some smart thermostats have other features such as controlling the hot water, or ‘multi-zoning’, where you can control the temperature in different rooms allowing you to have a warmer living room, cooler bedrooms and the heating switched off in unused rooms, such as guest bedrooms. Providers claim that this can save you a further 20% on your bills, although you can turn off or turn down most radiators manually without a smart thermostat. Smart thermostats are also compatible with smart speakers such as the Amazon Echo and Google Home, so if you really cannot be bothered to get off the sofa to turn down the heating, then they can be voice controlled too. With a smart thermostat, you can delay the heating coming on, or turn it down, or switch it off completely from wherever you are, via your phone.