Many factors influence the appropriate type of ventilation for a home including local code requirements, building size and types of appliances. Here are three of the most common ventilation systems:
- Exhaust Only – Exhaust-only systems use an exhaust fan, typically placed in a kitchen or bathroom, to remove stale inside air and moisture. They often run on a timer so they can work throughout the day. This type of system relies on the home’s natural air leaks to allow outside air to enter. Exhaust-only systems do not properly manage the influx of outside air.
- Supply Only – A supply-only system includes a fan that brings fresh air into the home and uses the home’s natural air leaks to allow inside air to escape. A filter can be added to the intake to trap pollen and other air pollutants before they enter the home. A dehumidifier can be added inside the home to control humidity levels. Supply-only systems bring in outside air but do not effectively manage removal of inside air.
- Balanced – A balanced system includes both exhaust and supply, controlling ventilation at both ends. This system includes separate fans to manage air supply and air exhaust. Overall, this is a better ventilation system because it provides qualities of both exhaust-only and supply-only systems. However, it may be more costly to run.
Does your home have a ventilation system? Do you have questions about your home’s air sealing and ventilation? Contact us with any questions.