23 00 00 Heating, Ventilating, and Air-Conditioning (HVAC)

23 70 00 Central HVAC Equipment

23 71 00Thermal Storage23 72 00Air-to-Air Energy Recovery Equipment23 73 00Indoor Central-Station Air-Handling Units23 74 00Packaged Outdoor HVAC Equipment23 75 00Custom-Packaged Outdoor HVAC Equipment23 76 00Evaporative Air-Cooling Equipment

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