Available in outputs of 18kW, 24kW, 30kW and 40kW. Combining high efficiency in domestic hot water and central heating modes, the Combi Compact HRE’s energy-efficient design is a perfect example of our revolutionary condensing boiler technology – Double High Efficiency – in action. With an efficiency rating of up to 95.8% for domestic hot water, the Intergas Combi Compact HRE is available with four power outputs to satisfy most domestic applications. All our HRE boilers are Energy Saving Trust recommended.