Health Risk Values. Concentrations of chemicals or defined mixtures of chemicals emitted to air that are unlikely to pose a significant risk of harmful effects when humans are exposed to those concentrations over a specified time.
Heat Recovery Ventilator. Exchanges stale indoor air for fresh outdoor air with minimal heat loss. In winter, warmth from the indoor air being vented out is transferred to the outside air being drawn in.
Heat Reclaim Ventilation. With an HRV system temperature and humidity are efficiently exchanged between supply and exhaust air. This process recovers energy losses and considerably reduces the air conditioning load.