Ventilators
Ventilators bring fresh air into your home without losing heating or cooling energy. Their unique energy exchange system transfers the heating or cooling energy from the stale air being exhausted from your home to the fresh air the ventilator brings into your home.
If your family suffers from allergies, ventilators are a much better alternative for introducing fresh air into your home verses opening your windows. They also do a great job of reducing cooking and pet odors, smoke and other pollutants out of your home.