CoolSys is the parent company of an operating businesses that provide a full spectrum of best-in-class service experiences and solutions to the retail, commercial, and industrial refrigeration and HVAC industries. The CoolSys corporate brand was developed to unite a growing family of refrigeration & HVAC operating brands into one family, while providing strategic guidance and leadership, along with best-in-class experience.

With more than 20 years of experience in air conditioning and ventilation, Cooper&Hunter has grown into an HVAC market player. Cooper&Hunter has developed into a well-known brand with rapid growth in export sales volume, adding new markets every year.

Copper Development Association, Inc. (CDA) is a U.S-based, not-for-profit association of the global copper industry, influencing the use of copper and copper alloys through research, development and education, as well as technical and end-user support.

Core HVAC is exclusively a TRANE and Mitsubishi dealer because they believe wholeheartedly it is the best equipment they can provide the customers.

Corning Incorporated (Corning Inc.) s one of the innovators in materials science, with a 167-year track record of life-changing inventions. Corning applies its unparalleled expertise in glass science, ceramics science, and optical physics along with its deep manufacturing and engineering capabilities to develop category-defining products that transform industries and enhance people's lives.

Covar Aircare provides exceptional A/C repair and installation throughout the entire Houston & Surrounding areas.

Cozy is a manufacturer of direct gas heating equipment known for its commitment to product quality. Designed to withstand the test of time, Cozy heaters are engineered for long-term comfort and dependability. Cozy Heaters use the highest quality components and are constructed by expert American craftsmen, we take pride in each and every product we produce.

Crawford Company specializes in heating, air conditioning, plumbing, electrical, laser cutting, machining, welding, fabrication and brewing equipment.

Creative Realities, Inc. is a creative technology company that designs, develops, and deploys marketing technology experiences to build a safe workspace. They have created thousands of digital solutions that transform the consumer and shopper journey into intelligent, responsive, aware and immersive experiences.

Crestron is one of world's renowned innovators and manufacturer of advanced control and automation systems for the office, campus and home, reinventing the way people live and work. With integrated solutions to monitor, manage, and control audio, video, and lighting, shades, and climate, Crestron streamlines technology to improve the quality of life for the users.

CSA Group is dedicated to testing for safety, social good and sustainability across key business areas and specialized markets and technologies.

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.

Cullen Mechanical Inc is a factory authorized service, install and Startup Company for multiple manufacturers. They are a commercial based mechanical company specializing in heat and cooling plants, roof top equipment and energy recovery systems.

Cummins Inc. empowers people to grow their careers through meaningful work, building inclusive and equitable teams, coaching, development and opportunities to make a difference. Their wide range of services include Cummins Engine Business, Cummins Power Generation, Cummins Distribution Business, Cummins Turbo Technologies, Cummins Emission Solutions, Cummins Fuel Systems, Cummins Filtration, and Cummins Electrified Power.

D.T.M. Heating And Air Conditioning proudly serves Dallas - Fort Worth Metroplex, Texas area. As a trusted and reliable HVAC contractor, they specialize in a variety of HVAC installations. They offer comprehensive services including AC repairs, AC installations, thermostat services, heat pump repair, and gas furnace repair. Their expert technicians deliver exceptional service using top-quality parts and equipment.

Dabek Heating & Cooling is a full-service HVAC Company based in Trever, WI. They specialize in installing any makes and major brands of heating and air conditioning systems including air conditioners, water heaters, radiant heating systems, whole home monitoring systems and more.

Daniels Fans is a manufacturer of high-temperature fans, with thousands supplied to furnace manufacturers worldwide.

Davis Air Conditioning and Heating provides heating and air conditioning repair, service and maintenance in Houston, Sugarland, Pearland, Pasadena, Stafford, Angleton, TX, and the surrounding area

Dawsongroup truck and trailer are the UK's largest independent truck and trailer provider specializing in contract hire, rental and leasing of 4×2 and 6×2 tractor units; curtain side, box and refrigerated rigids; curtain side, box, skeletal, step frame, platform and refrigerated trailers; car transporters; and specialist and bespoke vehicles.

DCM Manufacturing, Inc., a Dreison International Company, is a recognized pioneer in manufacturing, sales and service of OEM products for the mobile HVAC and industrial heat transfer markets. Dreison International began operations in 1976. Corporate offices are in Cleveland, OH, and Grand Prairie, TX.

DeFNiC Software is a manufacturer of Dispatched-service management and work order software. Their software is beneficial to track the status of the order and much more.

Deford Heating and Air Conditioning Inc. offers High Quality Heating & Cooling Equipment and Service to Residential and Commercial Customers in the Corvallis, Albany, and Surrounding Oregon Area.

At Del-Air Heating and Air Conditioning, they provide only the newest and most innovative air conditioning technology and brands. Their renowned AC service in Florida provides a vast selection of brand-name units for installation and maintenance.

Delta is a global provider of switching power supplies and thermal management products with a thriving portfolio of smart energy-saving systems and solutions in the fields of industrial automation, building automation, telecom power, data center infrastructure, EV charging, renewable energy, energy storage and display, to nurture the development of smart manufacturing and sustainable cities.

Delta P Carver, Inc. expands Carver Pump’s stellar reputation for quality, efficiency, durability and exceptional value to another product line serving markets all around the world.

DeltaTrak, Inc., is a globally renowned innovator of cold chain management and temperature monitoring solutions. Their product line includes a wide range of temperature and humidity data loggers and wireless systems. They also have portable environmental test and measurement systems, including thermometers-digital and infra-red, temperature/humidity monitoring and recording devices and wireless systems in their inventory.

Denair HVAC is one of the fast-growing HVAC companies in New York. Denair HVAC has the expertise to get the job done on time and within budget. They provide Ductwork, HVAC Equipment Installation, Preventive Maintenance, Repair/Service, Piping, Shop Drawings, Project Management, Project Coordination, HVAC, Mechanical, Cooling Tower, and Boiler.

Dennis’ Heating and Air Conditioning, Inc provides HVAC Installation, Retrofits, Service and Maintenance, as well as a full service sheet Metal Fabrication Shop. They are capable of fabricating almost anything, if customers can draw it, they can build it. The company is known for their knowledge, reliability, and incredible customer service.

DenPro HVAC believes in exceptional customer service and setting the bar high in the industry. They are a locally owned and operated HVAC company serving south central Pennsylvania. From standard preventative maintenance to full replacements, both residential and commercial, they cover all HVAC needs.

Denron Plumbing and HVAC, LLC. is a plumbing and HVAC sub-contractor based in Manchester, New Hampshire. They provide Commercial Plumbing and HVAC, Service and Maintenance, Building Information Modeling (BIM), Pre-fabrication, Construction, and Design Build.