6.4 k W - 1.8 kW (manual) 6.4 kW - 3 kW (electronic) heat output Built in thermostat, burner control, integral regulator 2 individually controlled SS burners Manual or electronic control models available Highly efficient heat exchanger (81% peak efficiency) Vitreous enamel combustion chamber for ease of maintenance 2 speed fan 100mm flue NG or LPG