23 7300 - Air Handling Units
23 0580 - HVAC Coil Anti-Corrosion Coatings
23 8100 - Unitary Air Conditioning Equipment - including residential furnaces and a/c units
- Air Enterprises
- AirPac Inc.
- Applied Air Products - Premium quality equipment to heat, cool, filter the air in your commercial or industrial building.
- Aspen Manufacturing
- Cambridge Engineering
- Carrier Corporation
- ClimateCraft - Custom air handling units used in most healthcare, institutional, commercial and industrial applications.
- Daikin Applied
- Energy Saving Products
- Engineered Air
- Environmental Air Systems
- Hastings HVAC
- Johnson MarCraft
- KEES - Indoor air handling units in modular design, 600 to 30,000 cfm, horizontal, vertical or inverted arrangements.
- Mars Air Systems
- Nortek Air Solutions - combining Governair, HUNTAIR, Mammoth, Temtrol, Venmar, Ventrol
- Trane - Trane is a manufacturer of air conditioning equipment, controls, service and parts for commercial buildings.
- United Metal Products
- York International Corporation