Founded in 1946, Century Heating and Cooling Products, A MARS Co. is a family-owned and operated supplier of quality motors, components, service/installation parts, and equipment for the HVAC/R industry. The company’s Equipment Division offers residential and commercial heating, cooling, and dehumidification equipment under the Comfort-Aire and Century brand names in the United States and under the Comfort-Aire by Aitons brand name in Canada. The

CG Plumbing deals in both domestic and commercial mechanical installations along with installation of UPVC soffits, fascia's and HVAC systems.

Chancey and Reynolds, Inc. was founded in 1978 by Steve Chancey & Art Reynolds. Steve & Art acquired Bachelor of Science degrees from the University of Tennessee. Steve, a native of Knoxville, also acquired a Master of Business Administration from U.T.

Chesapeake Systems is a well-established HVAC Manufacturers'​ Representative for the Mid Atlantic Region. Over the last thirty years, their experienced professionals have been working together to exceed customers'​ expectations. Their combination of veteran sales personnel coupled with young energetic professionals all share the common goal of providing premier service to all customers.

The Chartered Institute of Plumbing and Heating Engineering (CIPHE) is the professional body for the UK plumbing and heating industry. It is also an educational charity. As the professional body for the UK plumbing and heating industry, the CIPHE has represented, supported and developed members since 1906.

ClimateMaster researches, develops, manufacturers and markets the most advanced water source and geothermal heat pump systems. They also offer a comprehensive product line with innovative product selection software for residential, commercial and industrial applications.

CM Engineering is a progressive mechanical, electrical and plumbing engineering firm, founded in 1993, to expand the level of innovation and professionalism available to prospective clients. They serve clients nationwide and worldwide.

Since 1964, Cole Industrial has been the Northwest's provider of new, used and rental boiler equipment for the process and comfort heating needs of nearly every industry around. Their diverse product line includes boiler equipment from industry-leading Cleaver-Brooks, for which we are the region's sole manufacturers'​ representative.

Comfortmaker provides residential and light commercial heating and air conditioning products, condensing units, furnaces, heat pumps, accessories, 2-25 ton rooftop units.

Condenser and Chiller Services offers in field eddy current inspection, remote video inspection, protective epoxy coatings and complete retubing service with tubes in stock.

Conservation X Labs is a technology and innovation company that works in the field of energy and environment conservation. They provide a wide range of energy and ecology conservation solutions, technology solutions, and scaling solutions.

Consolidated Hunter is well-established in commercial and residential heating, ventilation, air conditioning and plumbing services. They have implemented systems for commercial/industrial/agricultural clients including rooftop heating, ventilation and air conditioning units, infrared heating, carbon monoxide exhaust, specialized piping, lift stations, boiler systems and much more.

Since its founding in 2008, Constant Home Comfort has serviced customers in Greater Toronto and surrounding areas, with high-quality, innovative and practical HVAC improvement products. They offer top-quality HVAC, furnace, and water tank services urgently. They also partner with renowned brands like Lennox, Bosch, Carrier, and more, offering a range of high-performance heat pumps.

Founded in 2015 by a team of experienced engineers, Cool Techies is dedicated to providing Houston homeowners with exceptional HVAC system optimization. At Cool Techies, they understand the importance of a properly functioning HVAC system for total home comfort. Unlike other companies that may lack in-depth knowledge of HVAC systems, their team of HVAC experts takes a personalized approach.

Servicing the South West, Cosgrove & Drew provide best in class mechanical engineering services, such as domestic installations, full industrial and commercial projects, and servicing and maintenance. They are a UK-based plumbing, heating, mechanical services and building maintenance company that undertakes the smallest maintenance work right through to complete refurbishment.

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.

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.

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.

Danaher Corporation is a global science and technology innovator committed to helping customers solve complex challenges and improve quality of life around the world.

Dandelion is a home geothermal company offering affordable geothermal installations that provide heating, cooling, and hot water to homes by exchanging heat with the ground beneath them. Dandelion became an independent company in Spring 2017, after getting started at X, "the innovation engine of Alphabet."

Day & Night Air Conditioning provides residential and light commercial heating and air conditioning products, condensing units, furnaces, heat pumps, accessories, 2-25 ton rooftop units.

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.

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.

Desert Aire provides refrigeration-based dehumidifiers and offer their customers indoor air quality (IAQ) solutions that help people live, work and play in healthy and productive environments. As recognized leaders in dehumidification and dedicated outdoor air systems, they apply deep engineering expertise, advanced technology and focused service & support to meet their design goals with solutions that are accurate, durable and efficient.

DFW IT Partner is a Reliable IT Partner providing one-stop IT solutions in Dallas, Austin, Fortworth, Houston, and San Antonio, Texas, USA. They provide businesses with the expertise, resources, and support needed to drive innovation and stay ahead of the competition in today’s fast-paced digital landscape. By working with them, businesses can achieve their technology innovation goals more efficiently and effectively.

DHL Group is the world's pioneer logistic company. The DHL Group connects people and markets and is an enabler of global trade. It aspires to be the first choice for customers, employees and investors worldwide. To this end, the Group focuses on growth in its profitable core logistics businesses and accelerating the digital transformation in all business divisions.

Digi-Key is one of the fastest-growing distributors of electronic components in the world. Digi-Key offers the world’s largest selection of electronic components in stock and available for immediate shipment. From prototype to production, they are here to fuel innovation all over the world.

Digital Twin Consortium is a global ecosystem of users ,who are driving best practices for digital twin usage and defining requirements for new digital twin standards. It coalesces industry, government and academia to drive consistency in vocabulary, architecture, security and interoperability of digital twin technology. It advances the use of digital twin technology from aerospace to natural resources.