Thanks to British Gas and Google most people are familiar with Hive and Nest: heating should be controllable for the whole home, but also individually for each room, allowing you to get the environment exactly how you want it.
Not using the spare room? Have heating set itself to 15 to keep the chill out and boost it quickly and easily when you need to use it.
A good heating control system can adapt to the way you live, making it simple to change schedules so you don’t heat an empty house – only heat it when you are home. And if it’s really chilly you can have the heating set so it’s warm just when you arrive home after work.