Product: McQuay International AAF-HermanNelson

AAF-HermanNelson self-contained unit ventilators by McQuay International can fit into existing ventilator space in classrooms and operate on electric heat or air- and water-source heat pump configurations. A two-stage compressor reduces noise and energy usage and helps provide consistent HVAC conditions. The unit uses non-ozone-depleting R-410A refrigerant. • www.mcquay.com

About the Author

Wanda Lau

Wanda Lau, LEED AP, is the former executive editor of ARCHITECT magazine. Along with 10 years of experience in architecture, engineering, and construction management, she holds a B.S. in civil engineering from Michigan State University, an S.M. in building technology from MIT, and an M.A. in journalism from Syracuse University's Newhouse School. Her work appears in several journals, books, and magazines, including Men's Health, ASID Icon, and University Business. Follow her on Twitter.

Upcoming Events