Institute of Domestic Heating & Environmental Engineers is the pre-eminent professional body for the approved heating engineer. The prime objective of the IDHEE is to raise the standards of domestic heating installations through education, to which end IDHEE Education has developed the Domestic Heating Design Course, and continues to develop further courses to enhance the knowledge of installers in general and its members in particular.

International Accreditation Forum (IAF) is the world association of Conformity Assessment Accreditation Bodies. Its primary function is to develop a single worldwide programme of conformity assessment, which reduces risk for business and its customers by assuring them that accredited certificates may be relied upon.

The International Environment Agency (IEA) is the global energy authority, providing data, analysis, and solutions on all fuels and all technologies. They help governments, industry, and citizens make good energy choices.

International Ground Source Heat Pump Association is an association of companies, professionals and users dedicated to promoting the science, utility and use of geothermal (ground source) heating and cooling technology.

The International Institute for Sustainable Laboratories (I2SL) is devoted to the principles of sustainable laboratories and related high-technology facilities, from design to engineering to operation. Through worldwide partnerships and the exchange of technical expertise, I2SL will encourage the development of high-tech facilities that address the rapid pace of science, medicine, research, and development in a dynamic environment.

MSCA is a renowned organization for HVACR contractors, providing education, marketing, and labor/management services to assure its contractor members deliver quality performance, value and expertise for all building system needs.

Mitsubishi Heavy Industries, Ltd. delivers innovative and integrated solutions across a wide range of industries from commercial aviation and transportation to power plants and gas turbines, and from machinery and infrastructure to integrated defense and space systems.

The National Ground Water Association represents groundwater industry professionals including contractors involved in geothermal heat pump drilling and system installation.

The Occupational Safety and Health Act of 1970 established NIOSH as a research agency focused on the study of worker safety and health, and empowering employers and workers to create safe and healthy workplaces. NIOSH is part of the U.S. Centers for Disease Control and Prevention, in the U.S. Department of Health and Human Services. It has the mandate to assure “every man and woman in the Nation is safe and in healthy working conditions.

The North American Electric Reliability Corporation (NERC) is a not-for-profit international regulatory authority whose mission is to assure the reliability and security of the bulk power system in North America. NERC develops and enforces Reliability Standards; annually assesses seasonal and long‐term reliability; monitors the bulk power system through system awareness; and educates, trains, and certifies industry personnel.

Ofgem is Britain’s independent energy regulator. Their role is to protect consumers now and in the future by working to deliver a greener, fairer energy system. They are a non-ministerial government department and an independent National Regulatory Authority.

OMNIA Partners, Public Sector is the cooperative purchasing organization that is driving excellence in public sector procurement for K–12 schools and districts, state and local governments, colleges and universities and nonprofits. OMNIA Partners offers the most robust portfolio of high-quality cooperative contracts in the public procurement space.

OpenTherm is a non-manufacturer-dependent system of communication between modulating HVAC appliances and room thermostats. It consists of a communication protocol and an interface specification. The OpenTherm communication protocol is primarily designed to control modulating heating appliances. The protocol is available to members of the OpenTherm Association only.

REFCOM is the UK's market F-GAS certification scheme, operating since 2009. They help companies make sure that they comply with F gas regulations since 2014.

The Scientific Advisory Group for Emergencies (SAGE) is a British Government advisory body that advises central government in emergencies. Specialists from academia and industry, along with experts from within government make up the participation, which will vary depending on the emergency

The Society for Public Health Education (SOPHE) is a nonprofit, international professional association with a diverse membership of health education professionals and students. The organization promotes healthy behaviors, healthy communities, and healthy environments through its membership, its network of local chapters, and its numerous partnerships with other organizations.

The Stove Industry Association (SIA) is the trade association for the UK stove sector. The members include appliance, flue and chimney systems, components, glass and fuel manufacturers, suppliers, retailers and installers, and chimney sweeps.

The Sustainable Energy Association are a member based industry body offering innovative policy solutions that link up building-level technologies and the wider energy system to achieve a low carbon, secure energy future for the UK, benefits for UK consumers, and commercial growth for businesses working in the sector.

The Tennessee Valley Authority is a corporate agency of the United States that provides electricity for business customers and local power companies serving 10 million people in parts of seven south-eastern states. TVA is fully self-financing, funding virtually all operations through electricity sales and power system bond financing. TVA focuses on Energy, Environment, and Economic Development.

The Brick Consortium, Inc. is a non-profit membership corporation whose purpose is to encourage the research and development of Brick Schema Specifications for the built environment and any supporting tooling, documentation, and best practices necessary to promote Brick. The consortium develops the Brick Schema Specifications as open source through member participation.

The Climate Group works internationally with leading businesses, states and regions to deliver a world of net zero greenhouse gas emissions and greater prosperity for all.

DG Haustechnik represents its members on a national and international level and offers them work and decision-making aids on fundamental issues relating to the market, competition, economic policy, business administration, finance and taxes, training and further education or advertising. The DG Haustechnik also promotes the cooperation of the building technology wholesalers with the companies of the next economic level.

TruEnergy is an Ofgem licensed energy supplier offering bespoke contracts for businesses and is the supplier of choice for utility splitting companies. TruEnergy works with entrepreneurs, property landlords, facility managers and businesses to make energy procurement simple and cost-effective.

U.S. Climate Alliance states are committed to taking real, impactful, on-the-ground action that urgently addresses the climate challenge. In becoming an Alliance member, member states commit to achieve the Paris Agreement’s goal of keeping temperature increases below 1.5 degrees Celsius globally.

Founded in 2003, Utilita was created to challenge the Big 6 energy suppliers by empowering everyone with a fair and flexible service that’s good for the pocket and planet.

World Environment Center is an independent, global non-profit, non-advocacy organization that advances sustainable development through the business practices of member companies and in partnership with governments, multi-lateral organizations, non-governmental organizations, universities and other stakeholders.

The World Plumbing Council (WPC) is an international organization which aims to develop and promote the image and standards of the plumbing Industry worldwide. World Plumbing Day is an international event on March 11 every year, initiated by the World Plumbing Council as a means of highlighting the important role plumbing plays in the health, safety and sustainability of the community.

The Wyss Institute at Harvard University uses biological design principles to develop new engineering innovations that will transform medicine and create a more sustainable world. By emulating biological principles of self assembly, organization and regulation, they are developing disruptive technology solutions for healthcare, energy, architecture, robotics, and manufacturing, which are translated into commercial products and therapies.