Florida Air Conditioning Distributors recommended ERV wheels manufactured by Airxchange, Rockland, Mass. The company offers a full line of ERV wheels that are sold in integrated packaged systems, as accessories for packaged units, or as ERV options. The company provides energy recovery solutions for 100- to 35,000-cfm HVAC systems.
Florida’s air is usually quite warm and humid; Eno was able to demonstrate that by recovering 70 percent of the school’s exhaust-air energy and recycling it. The ERV system he recommended would allow the architect to reduce the required size of the school’s packaged HVAC unit by one-half. Because ERV would dramatically lower the OA load, the school could get by with a smaller, less-expensive HVAC system.
The ERV system was paired with a high-efficiency unitary air conditioning unit on a single plenum curb to minimize internal duct connections and to simplify the installation on the roof of the school.