The Model ERCH energy recovery ventilator from this Wisconsin company was designed as a smaller and lighter alternative to previously available products. It provides fresh outdoor air while recovering energy from exhaust air stream. The ERCH offers water or DX cooling and hot water, electric or indirect gas heating. Four housing sizes provide airflow capacities from 1,000 to 10,000 cfm., and external static pressure up to 1.5 in. wg.

Greenheck, P.O. Box 410, Schofield, WI 54476-0410; 715/359-6175; fax 715/355-2399.

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