Volatile organic compounds (VOCs) are emitted as gases from items in your home. These include cleaning chemicals, carpet, furniture and more. Concentrations of many VOCs are consistently higher indoors (by up to ten times) than outdoors. Some of which may have short and long term adverse health effects that can include eye, nose, and throat irritation; headaches, loss of coordination, nausea; damage to liver, kidney, and central nervous system. Limiting VOC emitting products in your home and using a BROAN Air Exchanger to continuously ventilate your home with fresh outdoor air can dramatically improve the air in your home and create a healthy environment for you and your family. BROAN air exchangers with Heat Recovery are designed to recover heating or cooling energy from outgoing air and transfer it to the incoming air—providing your home with clean, fresh air for pennies a day.