Heat Recovery Ventilation Systems
![A heat recovery ventilator with blue and red colored duct collars.](https://www.hometips.com/wp-content/uploads/2012/06/hrv_heat_recovery_ventilator_hon12.jpg)
An expert guide to heat recovery ventilation (hrv) systems, and how they work to ventilate a home without unnecessarily wasting heated or conditioned air. Inside a heat recovery ventilator, one fan draws outdoor air in and another fan blows stale room air outside. Both fans blow the air through a central heat-exchange core that extracts […]