23 70 00 Central HVAC equipment
23 81 29 Variable refrigerant flow
23 56 00 Solar energy heating equipment
23 54 16.16 Oil fired furnace
23 62 00 Packaged compressor and condensor units
23 81 26 Split-system air-conditioners
23 81 46 Water source unitary heat pumps
23 72 00 Air to air energy recovery equipment
23 74 00 Packaged outdoor HVAC equipment
23 81 43 Air-source unitary heat pumps
23 54 16.13 Gas fired furnace
23 82 39 Unit heaters
23 73 00 Indoor central-station air-handling unit