Looking to get a 40kw or 42kw heat only boiler for a largish house. already done heat loss to these values. was going to use and pressurise with external expansion vessel. Vaillant tech suggested they had a boiler to suit but i cannot find it? Anyone know if they do one ( it is for domestic use)
failing that any other decent makes do one?
many thanks
failing that any other decent makes do one?
many thanks