The Immergas range of high efficiency 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 INTEC 12-30 SYSTEM EXTERNAL is a heating only boilers used for hydronic heating.

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 Universal LPG.