Heat- or energy-recovery ventilators and ventilation control systems help replace stale, contaminated indoor air with fresher outdoor air, to ensure that every corner of your home is comfortable.

Shown: Energy- and heat-recovery ventilators installed with your home comfort system. The average home should have at least 0.35 ACH (air changes per hour) rating. Many newer homes have an ACH rating as low as 0.05.*
* Source: www.epa.gov, "The Inside Story: A Guide to Indoor Air Quality"