Can a home be too air tight?
It is possible to seal a home too tightly. A certain amount of fresh air is required to maintain good indoor air quality. If a house is too tight, then mechanical ventilation to provide fresh air is required. This is often preferrable since it is controlled versus the uncontrolled nature of outside air infiltration. An energy specialist can help you determine if your house is sealed too tightly by performing a blower door test.
