My gas boiler fired CH system works, but the radiators never get very hot to the touch, especially downstairs. The boiler is set at 62 C but the warmest radiator (upstairs bathroom) doesn't get above 40C and downstairs 35C. The TRVs are all set max. How can I get the system to work as it should?
maybe its working to how it has been installed or adjusted,every heating installation is bespoke. its easily sorted but its a summer job
Do the rooms get up to temperature? Note: Setting a TRV fully open will not make the room heat up any quicker. All it's doing is asking for the room to be heated to 28/30C (depending on TRV model), which will only happen if the radiator is large enough. A TRV is fully open if the room temperature is more than 2C below the set temperature.