Welcome to Original Heating Limited | Biomass Heating Solutions DETI announce changes to the Renewable Heat Incentive in Northern Ireland Original Heating Exhibits at the All-Energy Show New Domestic Renewable Heat Incentive Scheme Open for Applications Enterprise, Trade and Investment Minister Arlene Foster visits Original Heating Easyfire The KWB Easyfire boiler ranges from 8kW – 35kW Classicfire The KWB Classicfire boiler ranges from 20kW – 50kW PelletfirePlus The KWB Pelletfire Plus boiler ranges from 45–135 kW Multifire II The KWB Multifire II boiler ranges from 20kW – 120kW KWB Powerfire The KWB Powerfire boiler ranges from 130kW – 300kW