• AAON, Inc.  - Manufacturer of rooftop heating and cooling units.
• Addison Products Company - manufacturer of air conditioners and domestic water heating heat recovery units.
• Aermec Spa - air conditioning systems.
• Airedale International - designs and manufactures a wide range of air conditioning products for a global market.
• Al Huraiz Group - manufacturer of Everhot water heaters, Everbright aluminium cookware, Universal Gas LPG gas cylinders, and Evertemp air conditioners.
• Allied Thermal Systems - maker of Thermal Flow residential water-cooled air conditioning systems. 
• American Standard - Manufacturer of residential and commercial heating and cooling systems, HVAC, air conditioners, gas furnaces, heat pumps, air handlers, and air cleaners. Brands include Allegiance, Heritage, Freedom, Odyssey, and Voyager.
• Blue Star limited - Air conditioning and refrigeration, manufacturers of central ACs, window ACs, splits, ducted Acs, water coolers, cold rooms, deep freezers, dispensers, kitchen and laundry equipment.
• CALMAC - manufacturer of thermal energy storage equipment for off-peak air conditioning in commercial HVAC applications and ice skating rinks.
• Carrier Corp. - World leader in Air Conditioning, Heating, and refrigeration systems.
• Continental Industries, Inc. – designs and manufactures a full line of registers, grilles, diffusers and venting and chimney systems for commercial and residential use.  
• Central Refrigeration & Air conditioning Singapore - manufactures coldrooms. Also wholesaler for commercial and industrial refrigeration and air-conditioning components.
• CPS Products - Professional Air Conditioning and Refrigeration tools and equipment.  
• Comfortmaker - information on residential gas and electric heating and cooling units. Plus a list of local distributors.
• Custom Air-Plenums - manufacture energy efficient HVAC unit ventilators for school retrofits and renovations.
• Dadanco - designs air conditioning systems and equipment.
• EDPAC International Limited - manufacturers of precision/close control air-conditioning equipment.
• EnviroMaster International Corporation - manufacturer of ductless split air conditioning systems, RetroAire replacement chassis for cool and heat pump systems, and ArticCool custom refrigeration display cases.
• Evapco - manufacturers of industrial and commercial cooling towers.
• Fujitsu General America - Manufacturer of floor standing, wall, ceiling suspended, ceiling cassette, or split air conditioning systems that neatly fit in a ceiling or wall void.
• GEA Air Treatment - Manufacturer of complete systems for heating, ventilation and air conditioning.
• George Risk Industries -GRI manufacturers high quality temperature sensors, water sensors, humidity sensors and safeties for hvac. All GRI Products are American Made. 
• GMC Heating and air Conditioning been building quality Goodman^® brand air conditioning and heating equipment since 1982. Given our twenty-five years of experience in the heating and cooling business, our customers can be assured that Goodman brand air conditioning and heating systems meet the highest industry standards and are
• H2O Coil - Master Distributor of Heat Exchange and Air Movement Products; coils, air handlers, duct heaters, etc.
• Heat Controller Inc. - Room air conditioners, central air conditioning, and dehumidifiers under the Comfort-Aire® brand name.
• Heil- Find high-efficiency heating and cooling products for your home.
• International Comfort Products - Designs, manufactures and markets high-quality central air conditioning systems and gas and oil furnaces for use in homes and commercial buildings.
• Klimaire Products Inc. - manufacturers of mini/multi-split, air conditioners, heat pumps, refrigeration equipment, parts, and accessories.
• Kwikool Portable Cooling System - Manufacturer of portable units and spot coolers, with details of products and distributors. Houston, Texas, USA.
• Lennox - Heating and cooling comfort equipment that are the standard in the industry.
• Marley Cooling Tower - Designer and manufacturer of cooling towers and cooling tower components for the HVAC, refrigeration, industrial and power generation markets.
• McQuay International - Manufacture, sales and service of heating, ventilating and air conditioning equipment principally for the commercial, industrial and institutional markets.
• Nordyne - serves the residential, manufactured housing, retail and wholesale markets with heating and air conditioning.
• Peake Industries Limited - manufacturers of air conditioning equipment for residential, commercial and industrial applications.
• Rheem Manufacturing Company - One of the world's leading manufacturers of central heating and cooling products.
• RUUD- Offers air conditioners, heat pumps, and furnaces for residential and light commercial use.
• Shook Manufactured Products, Inc. stocks and distributes chucks (magnetic, non-magnetic, standard and metric), drivers, fasteners, and tools for the HVAC&R & Building Trades.
• Toshiba Air Conditioners - Toshiba Air Conditioning, news, product specifications, technical diagrams, CAD icons and instant links to the experts.
• Trane - Manufacturers of residential central air conditioning systems.
• Tristate Coil -TriState Coil serves all of North America with conveniently located manufacturing facilities. Our coils are designed for replacement HVAC coils for Industrial Coils, Marine coils and OEM applications.
• Unico System - Unico system's modular air handlers and coils can be installed in ceilings, floors, crawlspaces, and closets and its flexible 2" inner diameter supply tubing can be routed through existing ceiling, floor and wall cavities, eliminating the need for unsightly metal ductwork.
• York International - Manufacturers of  heating, ventilation, air conditioning, and refrigeration systems.