Caleffi Hydronic Solutions are globally renowned manufacturers of high-quality components for heating, plumbing, air conditioning, and renewables systems, for domestic and industrial plants.

The California Air Resources Board (CARB) is a part of the California Environmental Protection Agency. The mission of the California Air Resources Board is to promote and protect public health, welfare and ecological resources through the effective and efficient reduction of air pollutants while recognizing and considering the effects on the economy of the state.

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.

CALMAC manufactures thermal energy storage for more environmentally friendly, low cost cooling as well as skating floors for ice rinks around the world. The company specializes in ice storage and has a long history of commitment to innovative energy saving solutions including patents for over 200 products.

A national nonprofit consortium with offices in New York, Michigan, Colorado and California, CALSTART partners with 210+ member company and agency innovators to build a prosperous, efficient and clean high-tech transportation industry. CALSTART accelerates the pace of technology and is a market building organization.

Cambridge Engineering is a manufacturer of energy efficent heating/ventilation systems; gas-fired HTHV space heaters, and make-up air units.

Canarsee is an online store with a concentration on Plumbing, HVAC and PEX supplies. They carry high quality products and aim to deliver a compelling value and flawless shopping experience to their customers.

Capital Coil & Air manufactures commercial and industrial OEM replacement and custom HVAC coils, heat exchangers, fan coils & belt drive air handlers. Capital Coil & Air has over a decade of experience in the commercial OEM HVAC replacement & custom design/build industry. Capital Coil & Air has extensive experience working with varied commercial clients that include: engineers, mechanical contractors, government facilities and organizations.

Carrefour Group is the premier private employer in the countries in which it operates. This is obviously the case in France – where the group was founded – but it also holds true in countries such as Brazil, Argentina and Italy. At the same time, the Group gives priority to local supply chains. So 75% of all its food products come from local suppliers in the countries in which it operates.

Carrier Air Con is a globally renowned provider of heating, air-conditioning and refrigeration solutions. They provide innovative new products and services that improve global comfort and efficiency.

The Carver Group owns and manages a portfolio of brands which develop and manufacture products and solutions for building ventilation, air heating and cooling. Their products are sold worldwide through subsidiary offices and a network of distributors.

CAVH is a manufacturer's representative of HVAC products with locations throughout, FL. With over 70+ years of combined industry experience, they provide high-quality products and use the industry knowledge to offer one unsurpassed customer service that one can't find anywhere else.

CDP is a global non-profit that runs the world’s environmental disclosure system for companies, cities, states and regions. Founded in 2000 and working with more than 680 financial institutions with over $130 trillion in assets, CDP pioneered using capital markets and corporate procurement to motivate companies to disclose their environmental impacts, and to reduce greenhouse gas emissions, safeguard water resources and protect forests.

CellarCool Wine Cellar Cooling Systems for residential and commercial wine cellar projects. Self Contained, Ductless, and Ducted Systems w/optional Active Humidity Control.

CellarPro cooling units are designed for custom wine cellars to maintain ideal temperature & humidity conditions for storing and aging wine.

The Center for Climate and Energy Solutions (C2ES) is an independent, nonpartisan, non-profit organization working to forge practical solutions to climate change. Their mission is to advance strong policy and action to reduce greenhouse gas emissions, promote clean energy, and strengthen resilience to climate impacts.

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.

Chadds Ford Climate Control offers a broad range of skilled services to create a more comfortable, productive, and rewarding home and work environment. They specialize in both residential and light commercial applications. Their service contracts protect the sustainability of customers comfort systems, including generators, with service targeted at maximizing longevity, reliability, and energy efficiency.

As an independent Bryant dealer in the Indianapolis area, Chapman Heating offers a full range of heating and air conditioning products and equipment, including gas furnaces, air conditioners, thermostats, humidifiers, boilers, UV lamps and more.

Chevron's greatest resource is their people. They provide Crude Oil & Natural Gas Production, Liquefied Natural Gas, Refining, Motor & Jet Fuel, Lubricants, Additives and Petrochemicals Marketing, Energy & Supply Trading, Energy Technologies, Energy Efficiency Solutions, Pipelines, and Shipping.

As a family-owned-and-operated business, Chris Mechanical Services, Inc is a Bryant Factory Authorized Dealer that offers expert installation and maintenance by their skilled team of factory-trained professionals.

Christmas Air has always been great to work with as they offer regular maintenance for HVAC equipment and valuable discounts on their services and new equipment. They offer free estimates for heating & air conditioning equipment replacement.

Chromalox is a thermal technology company. They engineer thermal solutions for the world's toughest industrial heating applications. Their Heat Trace segment delivers temperature management solutions for piping systems, valves, and tanks.

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.

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.

CleanAlert are manufactures of air efficiency monitors featuring the patented, revolutionary FILTERSCAN air filter monitor, based on differential pressure change, alerting the user when the filter needs servicing.

CLEAResult is the largest provider of energy efficiency, energy transition, and decarbonization solutions in North America. Since 2003, its mission has been to change the way people use energy. Now experts lead the transition to a sustainable, equitable, and carbon-neutral future for the communities and the planet.

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.

Since its establishment in 1985, CMC has carved an international reputation for designing controls without compromise and that add value to manufacturers that incorporate them. CMC’s approach to producing robust, multi-functional control solutions from its Belgium-based facility has seen the business evolve into a multinational firm with a presence in China, USA, France, Turkey and the UK.