- 10 30 00 - FIREPLACES AND STOVES
- 10300 - Fireplaces and Stoves
- 15610 - Refrigeration Compressors
- 15620 - Packaged Water Chillers
- 15670 - Refrigerant Condensing Units
- 15700 - Heating, Ventilating, Air Conditioning Equipment
- 15730 - Unitary Air Conditioning Equipment
- 15770 - Floor-Heating & Snow-Melting Equipment
- 15780 - Energy Recovery Equipment
- 15800 - Air Distribution
- 15810 - Ducts
- 15840 - Air Terminal Units
- 23 30 00 - HVAC AIR DISTRIBUTION
- 23 31 00 - HVAC Ducts and Casings
- 23 31 13 - Metal Ducts
- 23 31 16 - Nonmetal Ducts
- 23 33 46 - Flexible Ducts
- 23 36 00 - Air Terminal Units
- 23 36 13 - Constant-Air-Volume Units
- 23 36 16 - Variable-Air-Volume Units
- 23 50 00 - CENTRAL HEATING EQUIPMENT
- 23 60 00 - CENTRAL COOLING EQUIPMENT
- 23 61 00 - Refrigerant Compressors
- 23 61 13 - Centrifugal Refrigerant Compressors
- 23 61 16 - Reciprocating Refrigerant Compressors
- 23 61 23 - Rotary-Screw Refrigerant Compressors
- 23 63 00 - Refrigerant Condensers
- 23 64 00 - Packaged Water Chillers
- 23 64 13 - Absorption Water Chillers
- 23 64 16 - Centrifugal Water Chillers
- 23 64 19 - Reciprocating Water Chillers
- 23 64 26 - Rotary-Screw Water Chillers
- 23 70 00 - CENTRAL HVAC EQUIPMENT
- 23 71 00 - Thermal Storage
- 23 72 00 - Air-to-Air Energy Recovery Equipment
- 23 72 13 - Heat-Wheel Air-to-Air Energy-Recovery Equipment
- 23 72 16 - Heat-Pipe Air-to-Air Energy-Recovery Equipment
- 23 80 00 - DECENTRALIZED HVAC EQUIPMENT
- 23 81 00 - Decentralized Unitary HVAC Equipment
- 23 81 13 - Packaged Terminal Air-Conditioners
- 23 81 16 - Room Air-Conditioners
- 23 81 26 - Split-System Air-Conditioners
- 23 83 00 - Radiant Heating Units