Do I need a smart thermostat on every radiator?

No, you do not need a smart thermostat on every radiator. For most homes, a strategic approach is more effective and cost-efficient.

The primary purpose of individual smart radiator thermostats is to provide zone control. This means you can heat only the rooms you are using, saving energy and increasing comfort.

Here’s a simple guide:

• Do install them on radiators in rooms where your needs change frequently. Good examples are living rooms (used in the evenings), bedrooms (heated at night), and home offices (used during the day). This is where you'll see the most savings and convenience.

• You likely don't need them on radiators in rooms you always want to keep at a constant temperature, like bathrooms or hallways. A standard manual thermostat or even just the radiator's lockshield valve is often sufficient there.

In summary, equipping every radiator is unnecessary. Focus on the main living areas you want to control independently from the rest of the house for the best balance of comfort and cost.