What is the recommended ventilation rate for homes?

The recommended ventilation rate for homes typically falls between 2 to 6 air changes per hour. This range is considered optimal for maintaining indoor air quality while ensuring energy efficiency and thermal comfort. Adequate ventilation is essential to dilute indoor air pollutants, control humidity levels, and provide fresh air to occupants without causing excessive heat loss or energy consumption.

Ventilation at this rate helps to balance the introduction of outdoor air with the removal of stale indoor air, effectively reducing the concentration of airborne contaminants and allergens. This is particularly important in tightly sealed homes, where natural airflow may be insufficient.

While some options indicate higher air changes, exceeding 6 air changes per hour may lead to increased energy costs as it could result in significant heat loss during colder months or excessive cooling requirements during warmer months. Conversely, if ventilation is too low, indoor air quality may suffer, leading to potential health risks for the occupants.