The charnwood slx 45 fs boiler stove has identical looks and features to that of the slx20 but features a thermostatically controlled integral boiler that delivers a heat output sufficient to power 8 9 radiators and ample hot water because it is fitted with a water temperature sensitive thermostat heating controls can be fitted to give heat precisely when and where it is needed the slx 45 is even suitable for underfloor heating systemseasy to use and easy to maintain this stove burns wood