Technology
How does a thermostat work?
A thermostat works by sensing the temperature of a room and switching heating or cooling on and off to keep it near a set target. When the room drifts from your chosen temperature, it signals the system to correct it.
See it in motion.
Watch a 2-minute animated lesson that shows exactly how a thermostat works.
Step by step
- 1A sensor constantly measures the room's temperature.
- 2You set a target temperature you want to maintain.
- 3If the room is too cold or hot, it switches the system on.
- 4Once the target is reached, it switches the system off.
Frequently asked questions
- How does a thermostat control temperature?
- It senses the current temperature and turns heating or cooling on or off to keep the room at your set target.
- What is a smart thermostat?
- One that connects to the internet, learns your habits, and can be controlled remotely to save energy.
- Why does my heating cycle on and off?
- The thermostat switches it off when the target is reached and back on when the room cools, keeping it steady.