Broan is introducing four new Energy Star-qualified heat-recovery ventilators and four new energy-recovery ventilators. Company officials say the ventilators were designed to significantly improve the indoor air quality of homes with children and families, where clean air is essential. The systems reclaim heat from exhausted, stale indoor air to temper incoming fresh air. Heat is retained during cooler seasons and removed during warmer seasons. During the summer, ERV systems transfer moisture from incoming, humid air to the stale indoor air that is vented to the outside. In the winter months, humidity is transferred from exhausted indoor air in order to treat the cold, dry incoming air. All models are equipped with unique defrost systems, allowing for installation in any U.S. climate, the company says.

Broan-NuTone, 926 W. State St., Hartford, WI 53027; (800) 558-1711;