The American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) conducts timely research to remain the foremost, authoritative and responsive international source of technical and educational information, standards and guides on the interaction between people and the indoor and outdoor environment through the operation of HVAC&R systems in buildings and other applications.

Advanced RTU Campaign (ARC) is a guidance program designed to encourage building owners and operators to take advantage of savings opportunities from high efficiency roof top units. This effort is collaboration between ASHRAE and RILA, with the U.S. Department of Energy providing technical support to campaign participants (through the Better Buildings Alliance and the Federal Energy Management Program).

Associated Air Balance Council (AABC) establishes industry standards for the field measurement and documentation of HVAC systems and provides education, technical training, and certification for its members. The association's mission is to identify highly qualified, independent test and balance agencies who are capable of performing work to AABC Standards.

The Association of Energy Engineers (AEE) is the source of information and networking in the dynamic fields of energy engineering, energy management, renewable & alternative energy, power generation, energy services, sustainability, and all related areas. As a growing professional association, AEE’s overall strength is its strong membership base of over 16,000 professionals in 89 countries and its widely recognized energy certification programs. AEE network of 82 local chapters located throughout the U.S. and abroad meet regularly to discuss issues of regional importance.

The Building Automation Control Network (BACnet International) is the international organization that encourages the successful use of BACnet in building automation and control systems through interoperability testing, educational programs and promotional activities. BACnet International complements the work of other BACnet-related groups whose charters limit their commercial activities.

California Society of Healthcare Engineers (CSHE) provides opportunities for members to communicate and exchange ideas to keep abreast of operational disciplines with regional chapter meetings, the annual institute, code review communications, seminars and the CSHE Engineering News.

Central Association of Physical Plant Administrators (CAPPA) develops and maintains high standards in the administration, maintenance, operation, planning, and development of facilities management in educational institutions; to promote professional ideals and standards to serve the objectives of education better, and to supplement and assist the work of APPA in the central region.

ControlTrends provides HVAC and Industrial Controls professionals a place to learn and share information about the rapidly changing world of commercial and industrial controls. With product demonstrations, training videos, technical blogs and news about the issues that affect the controls professional.

Heating, Air-conditioning and Refrigeration Distributors International (HARDI) is the single voice of wholesale distribution within the HVACR industry. HARDI Distributor members serve installation and service/replacement contractors in residential and commercial markets, as well as commercial/industrial and institutional maintenance staffs. HARDI proudly represents more than 475 distributor members representing nearly 4,100 branch locations, and close to 500 suppliers, manufacturer representatives and service vendors.

LonMark International is a global membership organization created to promote and advance the business of efficient and effective integration of open, multi-vendor control systems utilizing ISO/IEC 14908-1 and related standards.

The Modbus Organization is a membership-based trade association, incorporated as "Modbus Organization, Inc." under the laws of the Commonwealth of Massachusetts, USA and recognized by the U.S. Internal Revenue Service as a nonprofit organization under Internal Revenue Code 501(c)(6). Donations to the organization are not deductible as charitable contributions but may be deductible as a business expense.

The world's largest corporate sustainability initiative.

A call to companies to align strategies and operations with universal principles on human rights, labour, environment and anti-corruption, and take actions that advance societal goals.

The Western Cooling Efficiency Center (WCEC) engages in primary research, innovation, laboratory testing, field demonstrations, education, outreach, and advocacy related to climate appropriate cooling technologies.

The Western HVAC Performance Alliance (WHPA) is a fusion of HVAC, energy efficiency, facility, and property management organizations whose decision-maker-level appointees work with one another, with utilities and with government to curb energy waste.