How do I replace a broken thermostat on a metal radiator?

Question

The thermostat swivels round and has no effect on the temperature. The radiator is always very hot. How can I replace the thermostat?

Answer 1

Thermostats usually unscrew by hand with a small plastic thumbwheel at their base. Yours may be broken or have come unscrewed. Replacement thermostats are quite cheap, about £10 - £20 GBP and should screw directly onto the metal valve.