Heat Recovery Ventilation
Heat recovery ventilation, also known as HRV, Mechanical ventilation heat recovery, or MVHR, is an energy recovery ventilation system, using equipment known as a heat recovery ventilator, Heat exchanger, air exchanger or air-to-air exchanger, that employs a counter-flow heat exchanger (countercurrent heat exchange) between the inbound and outbound air flow. HRV provides fresh air and improved climate control, while also saving energy by reducing the heating (or cooling) requirements.

At the heart of the system is a high efficiency Heat Exchanger that recovers up to 95% of the heat from the extracted air, and transfers it to the incoming fresh air.

Bathroom Fans