The British Plastics Federation (BPF) is the principal trade association for the UK Plastics Industry and is composed of over 450 members representing in excess of 75% of the plastics industry by turnover. The Federation is unique amongst plastics trade associations in Europe as its members encompass the whole plastics industry supply chain including raw material suppliers, processors, machinery suppliers, recyclers, and service providers.

British Pump Manufacturers Association (BPMA) is a member of the European Association of Pump Manufacturers (Europump). The vision of BPMA is to influence the pump sector business environment in the interests of members' competitiveness and sustainability and to increase sector awareness by providing technical support and pump technology training to members, operators, and purchasers of pumping equipment

British Standards Institute (BSI) is a business improvement partner. It has shaped best practices for over 100 years, helping organizations around the world embed excellence, and build competence and capability for sustainable growth.

The Building Decarbonization Coalition (BDC) is harnessing the power of coalition to forge paths for effective upgrades that power homes and buildings with clean electricity. They unite people, corporations, and politicians at every level to join in building decarbonization and build a sustainable future.

Building Engineering Services Association (BESA), until 2012 the Heating and Ventilating Contractors Association, and from then until 2016, B&ES, is the main UK trade association for companies that design, install, commission and maintain heating, ventilation, air conditioning, refrigeration (HVACR) and related engineering projects.

Building Owners and Managers Association (BOMA) International is a federation of U.S. local associations and global affiliates. The trade association for commercial real estate professionals for more than 100 years, it represents the owners, managers, service providers and other property professionals of all commercial building types, including office, industrial, medical, corporate and mixed-use.

BPI is the nation's standards setting and credentialing organization for the home performance workforce. BPI develops professional certifications for individuals and company-wide credentials for BPI GoldStar Contractors.

Building Talent Foundation brings together the efforts and resources of the Leading Builders of America (LBA), their trade partners, suppliers and other industry stakeholders. Their goal is to collectively strengthen the residential construction workforce, as well as help to meet education and employment-related sustainable development goals.

buildingSMART Deutschland is the German Chapter of buildingSMART International (bSI). The aim of this international organization is to spread Building Information Modeling (BIM) in industry, public sector, politics, government and media.

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.

The California Natural Resources Agency oversees and supports more than 26 distinct departments, conservancies, and commissions. The Agency Executive Team leads efforts to steward California’s natural environment and to advance Governor Newsom’s key priorities.

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.

Carbon Lighthouse is on a mission to stop climate change by delivering profitable climate solutions for commercial real estate portfolios. Its unique Energy Savings-as-a-Service model and patented AI software platform CLUES turn wasted energy into guaranteed financial value, operational excellence and measurable climate impact for clients.

COSA is a not for profit organization that provides educational programs in the areas of carbon monoxide and combustion analysis. These programs are provided to people in the medial field, first responders, and the mechanical trades.

Carl Ray & Associates is a Representatives Agency that represents quality manufacturers to HAVC/R wholesalers.

They license HVAC software for Apple and Android-based mobile devices that simplify field-based calculations. They also offer customized software for large HVAC manufacturers and utilities.

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.

The China Refrigeration Association is a non-profit academic corporation in the national refrigeration and air-conditioning industry. It is one of the first-level societies of the China Science and Technology Association. The society has 620 members, 101 senior members, more than 1,000 senior members, more than 13,000 ordinary members re-registered, and more than 10,000 student members.

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.

CKA Sales has been servicing HVACR distributors for over 47 years. They develop individual marketing plans through limited distribution to maximize pull through sales to major HVACR contractors. They are active members of HARDI.

Colorado Cleantech Industries Association actively and successfully advocates for Colorado’s clean technology industries at the Colorado State Legislature, and to the Administration of the State Governor. The association's efforts have directly led to creation of programs that support the growth of the industries and serve to position Colorado as a clean energy leader.

Ascente service contractor software is an integrated solution that serves the plumbing, HVAC, and refrigeration service contractor markets. Ascente is a Microsoft windows-based business and services management system. As an integrated suite of application software, Ascente handles every aspect of the HVAC service, plumbing service, refrigeration service, and construction contractor requirements.

The National Confederation of Associations of Installation and Maintenance Companies of Energy and Fluids (CONAIF) is the most representative business organization of Spanish installation and maintenance companies, it defend their professional interests in Spain and Europe, in addition to acting as interlocutors of the group before ministries and Other public bodies, institutions, and organizations related to the facilities.

Conditioned Air Association of Georgia (CAAG) is a state-wide, nonprofit trade association that represents heating, ventilation, air conditioning, and refrigeration contractors (HVAC-R) who work on residential, commercial, and industrial construction projects.

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.

The Construction Industry Council (CIC) is the representative forum for professional bodies, research organizations, and specialist business associations in the construction industry. CIC now occupies a key role within the UK construction industry providing a single voice for professionals in all sectors of the built environment through its collective membership of 500,000 individual professionals and more than 25,000 firms.

The CLC’s objective is to drive industry improvement. It draws together business leaders from across the construction sector to identify how to promote solutions to meet the ambition of a 33% reduction in cost, a 50% reduction in project time, a 50% reduction in carbon emissions, and a 50% reduction in the trade gap.

Consumer Technology Association tries to understand U.S. adult consumer awareness and sentiments of "healthy" homes and ownership of the technologies that enable them.

The Continental Automated Buildings Association (CABA) is an international organization promoting advanced technologies in homes and buildings since 1988.