Crystal Air Systems stands as a beacon of excellence in the dynamic realm of HVAC (Heating, Ventilation, and Air Conditioning) equipment manufacturing. With a rich legacy spanning over 15 years, they have earned their place as a vanguard in the industry, dedicated to championing environmental responsibility. Their operations are firmly anchored in environmental consciousness.

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

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.

CSW Industrials is a diversified industrial growth company with a portfolio of industry-leading businesses in Industrial Products and Specialty Chemicals. Their products include mechanical products for heating, ventilation and air conditioning (HVAC) and refrigeration applications; coatings and high-performance specialty lubricants.

CTK International (Thailand) Co., Ltd. is a manufacturer and distributor of air filters and air filters. The company has executives with over 20 years of experience and is recognized as one of the leaders in the production of air filters and air filters for industrial plants. The company has produced various products for the public both domestically and internationally.

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 .

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.

Cunningham AC, Heat & Propane is a family-owned HVAC and comfort services company based in Daytona Beach / Holly Hill, Florida. The business focuses on providing comprehensive heating, ventilation, and air conditioning services — including AC installation, repair, maintenance, and HVAC system solutions — along with propane (LP gas) services and related products.

Cunningham, Inc. is a mechanical contractor that believes in providing the highest value to customers with high-quality craftsmanship, and cutting edge technology. Their broad range of services include HVAC equipment, plumbing, electrical, architectural metals, industrial and commercial services, and Geo-thermal solutions.

The Copper Sustainability Partnership – CuSP for short - wants to challenge the norm and break the mould to achieve greater environmental thinking, sustainability and longevity within both construction and plumbing industries.

Custom Filters Direct is a reputable manufacturer and supplier of high-quality, custom-made filters catering to various industries. With years of experience in the field, they offer a comprehensive service from design to delivery. Based in New York City, Custom Filters Direct serves the entire USA, and they have one of the country’s largest selections of air filters ready for delivery.

With Cyclone all the kitchen canopy & commercial kitchen ventilation requirements can be satisfied by the removing worry and personal time input on the project. By offering one contact, one solution, one system package, they will ensure that a solution will transmute from inception, all the way through to completion in the quickest and most cost effective way possible.

D-Tech Sales are the HVAC/R manufacturer's representative covering California, Nevada, Arizona and Hawaii representing Eaton B-Line, Hartell Pumps, CFM Fans, Fieldpiece Instruments, REFCO, Panasonic HVAC, Williams Comfort Products, Sensible Products, Dow Products, EWC Controls, Eaton-Edison & BMP Refrigerants.

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.

D&E Air Conditioning has grown to become a market and knowledge pioneer in the delivery of sustainable climate solutions. They have a track record of delivering innovative, practical and workable solutions for some of the most challenging landmark projects.

Dab Pumps spa are a multi-national organization specializing in water movement technologies. They provide Centrifugal pumps, Pump systems, Pump services, residential building services, and commercial building services.

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.

Dagar Heating & Airhelp with the heating and cooling systems in home or office. Based in Carrollton, their air conditioning repair technicians receive raving reviews as they service homes all over the Dallas metroplex. They strive to offer honest advice and perform expert heating and ac repair services.

Daikin Air conditioning India Pvt. Ltd. (DAIPL) is a 100% subsidiary of Daikin Industries Ltd., Japan, a globally renowned manufacturer of commercial-use and residential air conditioning systems. Backed by the superior technology, the organization offers a wide range of energy efficient air conditioning solutions to the Indian customers.

Daikin Applied UK is the market leader in energy efficient AHU, chiller products and service & maintenance. They offer a full range of product solutions, specifically designed by our trained professionals to meet all your specified requirements.

Daikin Comfort is a global indoor comfort solutions provider. From heating and cooling replacements to indoor air quality improvements. The people at Daikin strive to enhance HVAC reliability, efficiency, and sustainability every day.

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.

Daiwa Industries Ltd is a Japanese company that primarily manufactures, sells, and leases freezers, refrigerators, showcases, ice machines, vending machines, cold-applied products, kitchen equipment, equipment, and parts. The company is also involved in planning, designing, and construction of stores and kitchens.

Dale Automation, established in 1999, is based in Johannesburg, South Africa. With hundreds of automated spiral systems installed in South Africa, Botswana, Namibia, Swaziland, Zimbabwe, France, UK and Australia, Dale has achieved its vision of becoming a world leader in both the poultry and baking industries.

Bingshan adheres to digital empowerment and low-carbon development, embracing the digital wave tightly, through business dataization, data operationalization and data resourcization, and relying on Bingshan Industrial Internet cloud service platform and national service-oriented manufacturing demonstration platform, providing a safe, green and intelligent refrigeration and heating products.

Dallas Plumbing Company is a family-owned commercial and residential HVAC and plumbing company based in Dallas, Texas since 1903. They have sold, installed, maintained and repaired thousands of air conditioning systems across the Dallas area.

Dan Cain is a lifelong Cincinnatian, born and raised on the west side of the city. With over 30 years of experience in the heating and cooling industry, Dan Cain Heating & Cooling has built a reputation as one of Cincinnati’s most reliable and meticulous HVAC services provider. Dan is an authorized Bryant dealer who installs new heating and air conditioning systems, as well as services existing equipment.