Fit thermostatic radiator valves (TRVs)

    TRVs let you set each room's temperature separately, so you stop heating rooms nobody is using.

    What to do

    1. List which rooms you use least, such as spare bedrooms.
    2. Fit TRVs to radiators that don't have them (a heating engineer can do this).
    3. Set lower numbers in little-used rooms and higher in living areas.
    4. Leave the radiator in the room with the main thermostat without a TRV, or fully open.

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