General-Duty Valves for HVAC Piping
Meters and Gages for HVAC Piping
Expansion Fittings and Loops for HVAC Piping
Common Motor Requirements for HVAC Equipment
Common Work Results for HVAC
Diagnostic Systems for HVAC
Operation and Maintenance of Decentralized HVAC Equipment
Condensing Boilers
Operation and Maintenance of Central HVAC Equipment
Refrigerant Recovery/Recycling
Operation and Maintenance of Central Cooling Equipment
Operation and Maintenance of Central Heating Equipment
HVAC Air-Distribution System Cleaning
Operation and Maintenance of HVAC Air Distribution
Operation and Maintenance of HVAC Piping and Pumps
Operation and Maintenance of Facility Fuel Systems
Operation and Maintenance of HVAC Systems
Heating, Ventilating, and Air-Conditioning (HVAC)
Deionized-Water Equipment
Reverse-Osmosis Water Equipment