Apr 19, 2013 · The shower water is heated by a combi boiler (Worcester 24i Junior). When I turn on the shower the water gets scallding hot, to the point that the shower is completely unusable. No matter what level the combi boiler dial is set to, the water temperature of the shower doesn't change from its scalding hot setting.Learn More
Generally speaking, modern combi boilers are more energy-efficient than a hot water heater system with a tank or cistern. There are several other ways of water heating, including solar hot water Learn More
