Fresh air to enter homes without causing uncomfortable drafts and to prevent indoor pressurization. Kitchens should have separate, manually operated, exhaust fans. The advantages of exhaust ventilation are control and consistency. Moisture, odors, and pollutants are removed continuously, regardless of weather conditions. High indoor air quality is maintained due to the constant infiltration of outdoor air. Exhaust ventilation systems are most suitable for moderate climates. Care must be taken during design and installation to prevent these systems from “back drafting” dangerous combustion gases from fireplaces and gas appliances into homes.
Improved indoor air quality. Exhaust ventilation systems continuously remove moisture, odors, and pollutants. This proactive approach to ventilation can result in improved indoor air quality. Improved comfort. ENERGY STAR labeled homes with tight construction and exhaust ventilation systems can have fewer drafts and a constant supply of outdoor air, resulting in improved comfort. Improved health. Stale air can cause health problems.
It can be responsible for symptoms such as headaches, drowsiness, and respiratory problems. These symptoms are more common in homes with poor ventilation and moisture control. Continuously providing fresh air can result in the improved health and well-being of the occupants.
Lower utility bills. Less energy is consumed to operate ventilation systems than to heat and cool excessive amounts of outdoor air that infiltrates leaky homes. This can result in lower utility bills, making homes less expensive to operate. Improved resale position. ENERGY STAR labeled homes with exhaust ventilation systems can provide the many impressive benefits listed above including more comfortable homes with better indoor air quality and lower utility bills. These benefits can translate into higher resale value.