Does A Combi Boiler Need A Bypass Valve?

Does A Combi Boiler Need A Bypass Valve? Do you need a bypass on a combi boiler? You have to have an auto bypass with Evohome or the boiler will overheat. Some boilers such as Vaillant ecoTEC 6, 8 and 9 series provide one, most do not. Do combi boilers have bypass valves? Combi Boilers … Continue reading Does A Combi Boiler Need A Bypass Valve?