Breakthrough Energy is dedicated to helping humanity avoid a climate disaster. Through investment vehicles, philanthropic programs, policy advocacy, and other activities, they’re committed to scaling the technologies they need to reach net-zero emissions by 2050.

British Gas are a globally renowned UK-based energy services and solutions company, focused on helping customers live sustainably, simply and affordably. They empower communities to use energy efficiently, supporting households in need and helping to build skills for a bright future.

Burnham Commercial produces steam and hot water boilers for commercial and industrial applications. Burnham Commercial offers scotch, firebox, and cast iron boilers ranging from light commercial to industrial sizes.

Caleffi North America Inc. are renowned manufacturer of high-quality components for heating, plumbing, air conditioning and renewables systems, for domestic and industrial plants. They also provide separators, manifolds, balancing valves, mixing valves, motorized zone and ball valves, vents, collectors, tanks, controllers, pump stations for hydronic, geothermal and solar thermal systems.

California Energy Commission (CEC) is the primary energy policy and planning agency, committed to reducing energy costs and environmental impacts of energy use - such as greenhouse gas emissions - while ensuring a safe, resilient, and reliable supply of energy. Established in 1974, the Energy Commission has seven core responsibilities.

Carr Supply has been providing outstanding service and products to customers since 1917. They strive to provide the best quality products for Heating, Ventilation, and Air Conditioning (HVAC), Plumbing, Hydronics, Water systems, Wells, and Geothermal Systems.

CCK is a manufacturing company specializing in the production of ventilation equipment, air handling units, fans, heat exchangers, smoke extraction systems, fire dampers, ventilation accessories.

Founded in 1973, Century A/C is the distributor of Ruud and York equipment providing 'service beyond expectations' at its 24 Texas locations. They are a wholesale distributor of HVAC equipment and supplies whose mission is to be an employee-driven company providing customers with service beyond expectations.

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

Bester heatpump is the leading HVAC equipment suuplier from China.

Clean Air Systems of LA, Inc. is the one stop shop for commercial and residential air conditioning and duct cleaning services in Shreveport, Louisiana, USA. They are a Charter Member of National Air Duct Cleaners Association as well as a member of the Indoor Air Quality Association, the Comfort Institute, the Shreveport Bossier & National Home Builders Association, and the Better Business Bureau of Shreveport, LA.

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.

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.

Coolair Equipment Limited is one of the UK’s leading air conditioning companies. Their specialist team of engineers and project managers work to provide a range of tailored air conditioning solutions to customers across UK.

Serving Northern California in USA, since1972, Cooper Oates Air Conditioning, Inc. is focused on helping building owners, property managers and commercial tenants manage the full life-cycle cost of their air conditioning systems through efficient design, dependable service and quality craftsmanship delivered by skilled professionals.

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.

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.

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.

Decon7 Systems, Inc., is a research-based manufacturer whose flagship product, D7, is one of the most powerful EPA-registered disinfectants available. D7 is used in multiple industries, including HVAC for improved indoor air quality (IAQ). D7 is a disinfectant, deodorizer, sanitizer and powerful cleaner that eliminates up to 99.9999% of harmful pathogens such as mold, bacteria, viruses and mildew that collect in HVAC equipment and can impact IAQ.

Delta Thermal Solutions, Inc. is located in Jackson, Mississippi, United States of America and is part of the Hardware, and Plumbing and Heating Equipment and Supplies Merchant Wholesalers Industry.

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.

DFC PRESSURE VESSEL MANUFACTURER CO., LTD. has provided the best-quality pressure vessels for many years and enjoys credit from all our customers around the globe. By introducing believable products such as heat exchangers, separators, and storage tanks with high security, state-of-the-art techniques, and all the required quality certifications, DFC believes it can develop long-lasting cooperation with customers.

Dimplex offers a variety of both indoor and outdoor electric heating solutions that are attractive in design, as well as powerful in performance. The heaters range from fan-forced to infrared and are suited to different spaces requirements. Dimplex electric fireplaces lead the industry with flame effect technology and realistic media bed accessories.

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.

Dongfang Electric Corporation (DEC) is a company based in Chengdu China, with businesses all over the world. With a long-term commitment to providing an integrated solution to global energy, transportation, environmental protection, and other infrastructure, they are determined to become top-notch energy and electromechanical equipment system integrator, service provider, engineering contractor, and overseas infrastructure investing.

Doucette Industries is a globally renowned supplier of heat exchangers, vibration absorbers and OEM parts to the HVAC/R industry since 1975. Their extensive products include suction line heat exchangers, heat recovery desuperheaters, coaxial coils, brazed plates, tube-in-tube condensers, shell and tube heat exchangers, vibration absorbers, pool water heat exchangers.

For over 30 years, Duct Doctor USA has been providing quality air duct cleaning for both residential and commercial customers. Duct Doctor was founded by a board-certified allergist in 1985 with a mission to improve the air quality of homes and workplaces.

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.

Established in 1995, Dusty Ducts, Inc. is certified as a minority-woman-owned-small business. As a Michigan corporation we provide HVAC Restoration, Indoor Air Quality and Energy Conservation for clients throughout Michigan and across the Midwest United States.

The E.ON Group is one of Europe's largest operators of energy networks and energy infrastructure and a provider of innovative customer solutions for 50 million customers. Thus, they are decisively driving forward the energy transition in Europe and are committed to sustainability, climate protection, and the future of the planet.