The E-Z-Aire® energy recovery ventilators use a counterflow heat exchanger for ultra-effective energy transfer, says the company. These self-contained makeup air systems can bring in 100% outside air with almost no auxiliary heating or sensible cooling required. These units are available with a 70%- or 85%-effective heat exchanger, in 10 models up to 4,000 cfm. The various models enable one to choose the correct unit to remedy a variety of IAQ problems, such as removal of indoor pollutants, smoke mitigation, and humidity control, states the manufacturer.

Des Champs Laboratories, Wholesale Division, a Unit of Entrodyne Corp., 45 Natural Bridge School Rd., Natural Bridge Station, VA 24579; 540-291-1111; 540-291-2222 (fax); (e-mail); (website).

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