Determine exactly how much fresh air your home needs to maintain healthy indoor air quality using the standard ASHRAE 62.2 formula.
ASHRAE 62.2 is the nationally recognized standard for ventilation and acceptable indoor air quality in residential buildings. It dictates how much fresh outdoor air must be brought into a home.
Modern homes are built with tight envelopes to maximize energy efficiency. This prevents natural drafts, meaning indoor pollutants, moisture, and odors get trapped inside unless a mechanical ventilation system (like an ERV) exhausts them.
An ERV exchanges stale indoor air with fresh outdoor air while transferring heat and moisture between the two airstreams. This provides fresh air without wasting the energy used to heat or cool your home.
