Heat recovery ventilation

images courtesy of Kiltox

Heat recovery captures waste heat energy and reuses it by returning it to systems or processes. This can include heating space and water. The cost benefits of a heat recovery system depend largely on the type and scale of the installation, but heat recovery can give substantial long-term energy savings. It often reduces the need to generate heat in the first place, making further energy and cost savings.

In the domestic sector this can be added to ventilation systems to either preheat incoming air or redistribute air within a household. Depending on the style of ventilation unit employed the heat is extracted from stale air using a heat exchanger or fresh air is preheated in the loft space.

Both systems lead to an energy saving compared to a conventional extract system.