- 11 70 00 - HEALTHCARE EQUIPMENT
- 11700 - Medical Equipment
- 13 20 00 - SPECIAL PURPOSE ROOMS
- 13 21 13 - Clean Rooms
- 13 21 16 - Hyperbaric Rooms
- 13 21 23 - Insulated Rooms
- 13 21 26 - Cold Storage Rooms
- 13 21 48 - Sound-Conditioned Rooms
- 13 22 00 - Office Shelters and Booths
- 13 23 00 - Planetariums
- 13 24 16 - Saunas
- 13 24 26 - Steam Baths
- 13 24 66 - Athletic Rooms
- 13 26 00 - Fabricated Rooms
- 13 27 00 - Vaults
- 13030 - Special Purpose Rooms
- 13630 - Solar Collector Components
- 15700 - Heating, Ventilating, Air Conditioning Equipment
- 15780 - Energy Recovery Equipment
- 15800 - Air Distribution
- 15830 - Fans
- 15860 - Air Cleaning Devices
- 15935 - Building Systems Controls
- 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 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 56 00 - Solar Energy Heating Equipment
- 23 60 00 - CENTRAL COOLING EQUIPMENT
- 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
- 25 00 00 - INTEGRATED AUTOMATION
- 44 11 00 - Air Pollution Control Equipment
- 44 11 16 - Industrial Dust Collectors
- 48 14 13 - Solar Energy Collectors