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From Table 3: Comparison of Air-to-Air Energy Recovery Devices (2016 ASHRAE Handbook - HVAC Systems and Equipment pg. 26.22):

Energy Wheel:

  • Equipment Size Range, cfm: 50 to 74,000 and up

  • Typical Sensible effectiveness, %: 65 to 80

  • Typical Latent effectiveness, %: 50 to 80

  • Typical effectiveness, %: 55 to 80