HR100S is a two speed surface mounted extract and intake single room heat recovery unit that gives up to 60% heat recovery. The HR100S has an extremely quiet trickle ventilation mode and is easy to install. An optional range of sensors are available.

The model comes complete with a highly efficient, polymeric heat exchanger cube.The compact washable cube interleaves outgoing moist warm air with incoming fresh air and allows the heat from one to warm the other without the two air streams mixing. Up to 60% of the heat that could otherwise be lost is transferred to the incoming air, optimizing energy savings. Energy is saved on room heating with no power being used by the cube itself.