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TRV accuracy

I'm finding the TRVs extremely innacurate. I have a digital room thermometer in each room next to the TRV. I'm finding when the radiator comes on and gets hot the TRV is a few degrees above the room thermometer. After several hours with the radiator off, the TRV is several degrees below the room thermometer. Temp compensation cannot account for this difference.


  • No, it cannot; the only solution to this problem is buying an additional thermostat or radiator thermostat and placing it away from the radiator

    Don’t bother using the offset: you’ll get the same result as setting a higher target temperature
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