The model RVC (Rooftop Ventilator with Energy Recovery Core) incorporates a total enthalpy core that provides both sensible and latent heat transfer and meets ASHRAE 90.1 minimum efficiencies. The enthalpy core’s cross-flow design prevents supply and exhaust airstreams from intersecting resulting in an Exhaust Air Transfer Ratio (EATR) of 0 to 1% per AHRI 1060 testing. Model RVC is available in three housing sizes with airflow up to 15,000 cfm and 5 to 70 tons of packaged DX cooling capacity. A fiber core is available in sizes up to 30 tons; a polymer core is available in sizes up to 70 tons.