CSD provides all services for the air conditioning, ventilation, and refrigeration industry. The company is certified for BESA, Avetta, Safe Contractor, and REFCOM Elite. CSD is Daikin D1 partner, engineers hold a minimum of level 2 city and guilds RAAC and are all certified in FGAS 2079, IPAF 3a/3b, and PASMA and trained in health and safety.

CSTK is a diversified transportation solutions provider of products and services for a variety of applications, including Thermo King transport refrigeration units, comfort systems, auxiliary power units, customized truck bodies, construction equipment, trailer repair & parts, aftermarket HVAC for vehicles & equipment, fleet vehicle graphics, lift gates, trailer skirting, and much, much more. CSTK also offers parts and service for all products.

Cubic Sensor and Instrument Co., Ltd. (hereinafter referred to as "Cubic") is a publicly listed company in SSE STAR Market (stock code:688665), specializing in smart gas sensors and superior gas analyzers. Set up in 2003, situated at “Optics Valley” of Wuhan, China, Cubic has established gas sensing technology platforms including optical technologies .

Daikin Industries, Ltd. is a manufacturer of air conditioning equipment. Their products and services use environment friendly technologies that cater to residential and commercial A/C markets.

Dairyland Power Cooperative, a Touchstone Energy Cooperative, was formed in December 1941. Headquartered in La Crosse, WI, Dairyland is a generation and transmission (G&T) cooperative providing wholesale electrical requirements for 24 distribution cooperatives and 27 municipal utilities. These cooperatives and municipals, in turn, supply the energy needs of members and customers in a four-state area.

Dan-Poltherm specializes in air conditioning, pool ventilation, dehumidification, humidification, and air heating systems. The company's offer is addressed both to designers, installation contractors, investors, and individual customers.

Dave's Heating & Air offers exceptional heating system and air conditioning repairs, service, installation; ductless HVAC, heat pumps and more.

Incorporated in 1950, De'Longhi Group is a globally renowned provider of portable heaters and air conditioners. They also manufacture electrical and kitchen appliances, along with consumer goods.

Del-Air has served Florida residents, businesses and homebuilders with quality air conditioning, heating, plumbing and electrical products and services. Del-Air's warranty programs and flagship Precise Comfort Plan include regular professional maintenance for all household plumbing, air conditioning, and electrical systems where applicable

Demeva Refrigeration Limited is a design company based out of Formby, United Kingdom. Formed in 1985 Demeva Refrigeration Ltd has developed to become one of the UK’s pioneering construction, Insulated panelling, refrigeration and mechanical services specialists. Demeva Refrigeration Ltd ability to provide all services associated with construction, Insulated panelling, refrigeration, and mechanical services projects in house.

Dennis Supply Co. is a renowned wholesale HVAC equipment and solutions company. Their product portfolio includes HVAC equipment, accessories, air quality products, control equipment, motors and drive systems, refrigeration products, meters, tools, instruments, chemicals, and hydronics.

Dependable Refrigeration, Inc. specializes in commercial refrigeration installations. They have over 30 years of experience in the commercial, industrial refrigeration field.

Dettson – A member of the Ouellet group. Mission. Provide sustainable solutions to the HVAC (heating, ventilation, air conditioning) industry.

DiversiTech Corporation is North America’s largest manufacturer of equipment pads and a renowned manufacturer and supplier of components and related products for multiple industries, including: HVACR, electrical, consumer hardware retail, electrical utility, automotive retail and pool and spa channel.

Donnelly is the most reliable mechanical contractor in New York City. Donnelly gives the clients peace of mind. Donnelly does this by providing the most innovative services and solutions through the experienced team. New York City’s premier provider of HVAC service, maintenance, and construction, as well as energy solutions.

Downriver Refrigeration Supply Co. is a renowned full line HVACR (Heating, Ventilation, Air Conditioning, and Refrigeration) distributor in the metropolitan Detroit area of the United States.

Dunphey-Smith takes pride in delivering not only quality service but also the best value and brand names in heating and cooling products.

Dura Products, Inc is a state-of-the art Indiana based manufacturer of metering, pumping and dispensing systems for the DEF, AG, and turf Chemical industries. Founded by owners with decades of knowledge in farming and the chemical sales industry, Dura Products Inc goes beyond excellent design to incorporate innovative, versatile and durable transfer pump solutions with the end consumer always in mind.

DYSK PLC is a specialist supplier of air conditioning products and services, with over 100 years of combined experience in providing specialist advice, design assistance and first class pre and post sales technical support to the industry.

E-Hong Trading Co. Ltd has a history inrefrigerant import and resell market in Taiwan. They also export brazing torches to all over the world.

Juffali focuses on pioneering new areas of business, leading or creating sectors to provide market-centric solutions to the ever-evolving needs of the Kingdom of Saudi Arabia. Through their international alliances and domestically developed companies, they cater to every AC or refrigeration requirement – from retailing simple window AC units, to developing and building custom-designed refrigeration systems.

Earth City Distributing is a renowned distributor of HVAC solutions and equipment with headquarters located in Chesterfield, Missouri, USA.

East West Trading Company are exporters of spare parts for air conditioning and refrigeration products. Their products include floor-ceiling units, refrigerants, compressors and copper.

Eastern Refrigeration Supply Co. Inc. are HVAC/R wholesale distributor serving southwestern Pennsylvania for over 70 years. They provide commercial refrigeration, heating and air conditioning solutions.

With over 20 years’ experience, EasyAir has an in-depth knowledge of saving their clients' energy by designing and installing heat recover systems. They also provide unique, site specific commercial kitchen heat & smoke extract, fume extract, dust extract, paint & varnish fume extract as well as bespoke turnkey air conditioning systems.

Since 2004 EdgeStar has been an industry leader in the specialty appliance field, developing appliances like refrigerator, freezers and ice makers. EdgeStar has since expanded to two additional brands, Koldfront and Avallon, with the goal to build great brands that dominate niche markets by anticipating what customers want and giving it to them in a way that amazes them.

EMI offers a comprehensive line of ductless air conditioning systems with equipment for both hydronic as well as refrigerant-based systems. With exceptional performance and operating economy, ductless split systems are the ideal solution for light commercial, institutional & residential applications.

Emizen is incorporate considering the rapidly evolving high technology sector in today’s world; to fulfill the needs of trade and industry using technology, to improve life, society and the environment applied in industrial, home, as well as office, leading industries in the world, need for operation of a society or enterprise or the services and facilities necessary for social activate, such as education, healthcare, economic development.

Empire Supply Company, Inc. is a wholesale distributor of plumbing, heating and cooling products. Empire Supply is a located in Visalia, California with a territory that encompasses the southern San Joaquin Valley. The region is also served by Empire's affiliate, R.R.E & E. Corporation.

Envirco is credited for designing and manufacturing the first commercial cleanroom, the first laminar flow surgical suite, the first personnel safety exhaust hood, and the first low profile fan filter unit (FFU). Continuing as the leader in product technology for more than 45 years, it is the combination of innovative products with superior service and support that makes Envirco the total clean air solution.