28KW - 34KW
As a rough guide when reviewing your heating needs, a medium to large semi or detached house with up to 15 average size radiators will require a 28 to 34kW combi boiler. Most flats and smaller houses only need a 24 to 27kW boiler, while larger properties with a higher demand for hot water are generally more suited to a 35 to 42kW boiler.

From £850.58 £708.82
To £1,049.58 £874.65

From £930.34 £775.28
To £1,129.33 £941.11