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

23 70 00 Central HVAC Equipment

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

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