The Immergas range of high efficiency condensing boilers are wall mounted, fan assisted room-sealed boilers. The burner is lit electronically, and the heat output is controlled by a modulating gas valve.

The HE 30 SYSTEM INTERNAL and the HE 30 COMBI INTERNAL and EXTERNAL are heating only boilers used for hydronic heating. Domestic hot water is an available option (Hunt Heating only) used in conjunction with a stainless-steel hot water storage tank, diverter valve and probe. The boilers are supplied with a pump, pressure relief valve, expansion vessel and pressure gauge fully assembled and tested. They are designed for use with a fully sealed and pressurised central heating system using only Natural Gas and LPG. The HE range of boilers is suitable for central heating loads of between 14.8 and 35 kW.