the bolier was removed to allow as air source heat pump to be fitted, but was in full working order. I do have to list it as used for spare parts, so please bear that in mind. The Valiant Ecotec 824 Plus LPG Combi Boiler is a white storage tank water heater from the brand Vaillant. It is designed to heat water using LP (Liquefied Petroleum Gas) as the power source, making it ideal for heating systems in homes. This combi boiler is a reliable and efficient option for providing hot water and heating in a convenient and compact package.