- 11 57 00 - Vocational Shop Equipment
- 11200 - Water Supply and Treatment Equipment
- 11425 - Hood and Ventilation Equipment
- 11500 - Industrial and Process Equipment
- 15700 - Heating, Ventilating, Air Conditioning Equipment
- 15760 - Terminal Heating and Cooling Units
- 15800 - Air Distribution
- 15830 - Fans
- 15860 - Air Cleaning Devices
- 23 30 00 - HVAC AIR DISTRIBUTION
- 23 34 00 - HVAC Fans
- 23 34 13 - Axial HVAC Fans
- 23 34 16 - Centrifugal HVAC Fans
- 23 34 23 - HVAC Power Ventilators
- 23 34 33 - Air Curtains
- 23 35 13 - Sawdust Collection Systems
- 23 38 13 - Commercial-Kitchen Hoods
- 23 40 00 - HVAC AIR CLEANING DEVICES
- 23 41 00 - Particulate Air Filtration
- 23 41 33 - High-Efficiency Particulate Filtration
- 23 41 43 - Ultra-Low Penetration Filtration
- 23 43 00 - Electronic Air Cleaners
- 23 50 00 - CENTRAL HEATING EQUIPMENT
- 23 60 00 - CENTRAL COOLING EQUIPMENT
- 23 70 00 - CENTRAL HVAC EQUIPMENT
- 23 80 00 - DECENTRALIZED HVAC EQUIPMENT
- 23 82 00 - Convection Heating and Cooling Units
- 23 82 16 - Air Coils
- 23 82 19 - Fan Coil Units
- 23 82 23 - Unit Ventilators
- 23 82 26 - Induction Units
- 23 82 33 - Convectors
- 23 82 36 - Finned-Tube Radiation Heaters
- 23 82 39 - Unit Heaters
- 41 00 00 - MATERIAL PROCESSING AND HANDLING EQUIPMENT
- 42 00 00 - PROCESS HEATING, COOLING, AND DRYING EQUIPMENT
- 43 00 00 - PROCESS GAS AND LIQUID HANDLING, PURIFICATION, AND STORAGE EQUIPMENT
- 44 11 00 - Air Pollution Control Equipment
- 44 11 16 - Industrial Dust Collectors
- 44 40 00 - WATER TREATMENT EQUIPMENT
- 45 00 00 - INDUSTRY-SPECIFIC MANUFACTURING EQUIPMENT