Hi. I having my boiler and tank system switched to a combi. For a laugh I got BG to quote me. Boy did I laugh! But, the man said I would need to change all the rad stats because of the change in system pressure. I really dont know much about CH systems (am reading this forum and learning) but gather the CH is a sealed system. Do I really need to change all the radiator thermostat valves for new ones?
thanks.
thanks.