Air & Waste Management Association (A&WMA) is a non-profit, non-partisan professional organization that enhances knowledge and expertise by providing a neutral forum for information exchange, professional development, networking opportunities, public education, and outreach to more than 6000 environmental professionals in 65 countries.

ACCO offers online HVACR & plumbing apprentice courses for apprentices who need a non-classroom-based method of receiving their apprenticeship instruction.

The Air Conditioning, Heating, and Refrigeration Institute (AHRI) is the trade association representing manufacturers of HVACR and water heating equipment, within the global HVACR industry. AHRI’s 315 member companies manufacture quality, efficient, and innovative residential and commercial air conditioning, space heating, water heating, and commercial refrigeration equipment and components for sale in North America and around the world.

American Gas Association, founded in 1918, represents more than 200 local energy companies that deliver clean natural gas throughout the United States of America (USA).

American Lung Association is the leading organization working to save lives by improving lung health and preventing lung disease through research, education and advocacy.

At Apollo, their customers are at the core of everything they do. They understand the importance of reliable heating systems in cold climates and the impact they have on the well-being of individuals and the efficiency of businesses. That's why they are dedicated to providing superior products, exceptional customer service, and continuous innovation.

Associated Builders and Contractors (ABC) is a national association with 70 chapters representing more than 21,000 merit shop construction and construction-related firms with nearly two million employees. ABC's membership represents all specialties within the U.S. construction industry and is comprised primarily of firms that perform work in the industrial and commercial sectors of the industry.

The Association of Home Appliance Manufacturers (AHAM) represents manufacturers of major, portable and floor care home appliances, and suppliers to the industry in the United States and Canada. Its mission is serving the home appliance industry while delivering value to consumers through leadership, education and advocacy.

ASTM International is one of the world's largest development and delivery systems for international consensus standards for materials, products, systems, and services.

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.

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.

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.

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.

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.

CM Heating™ has proudly served Snohomish County, WA for over 40 years, CM Heating™ is among the very top-rated HVAC contractors in Washington State. CM Heating specializes in energy-efficient systems, such as standard heat pumps and ductless heat pumps. The company provides a combination of the best reputation, brands, warranties, craftsmanship, and price all backed by a 100% satisfaction guarantee.

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.

Since 1975, EDOS Manufacturers' Reps Inc. has represented only the finest manufacturers and marketing products available to the New York and New England plumbing and heating industry.

Energy Efficiency Resources (EER) hub of solutions helps homeowners and businesses achieve energy savings they never thought possible by bringing together national account resources and scalability, coupled with utility rebates for everyone.

The Environmental Protection Agency is an independent executive agency of the United States federal government tasked with environmental protection matters.

ESCO Institute provides HVACR educators and trainers with certifications, assessments, software, text books, reference guides, curriculum, training packages, and sustainable services.

The skilled trades of plumbing, heating, cooling and electrical keep our country running. Jobs in these industries are in high demand and come with great pay, career opportunities, and job security. Explore The Trades helps to discover that these careers aren’t just a choice – they’re the best choice.

The Georgia Institute of Technology is one of the nation's premier research institutes providing a focused, technologically based education to more than 25,000 undergraduate and graduate students.

Green Clean Institute is a globally renowned green energy certification and standards organization for HVAC systems and services. They have been offering green training and certification for over twenty years now.

Halpern - Jacobs represents the premier manufacturers of Heating, Ventilating, Air Conditioning, and Refrigeration Equipment and After Market Parts.

Harry Eklof & Associates Inc. is a manufacturer representative. They offer training services and also connect the user to the following products: Plumbing, HVAC, Bath Fixtures, Sump Sewage, Tools.

Hemco Inc. is a HVACR organization which provides application engineering and technical expertise for any project with primary focus on the commercial refrigeration sector. Difficult or unusual projects are their specialty.

The purpose of the Sustainable Energy and Environment Coalition is to advance policies that promote clean energy innovation and domestic manufacturing, develop renewable energy resources, and create family-sustaining clean jobs throughout the product supply chain.

Hugh M. Cunningham Companies offers premier sales representation to all distribution sectors of the HVAC and Refrigeration markets in the US States of Texas, Louisiana, New Mexico, Oklahoma and Arkansas.

HVAC Excellence was established in 1994 to improve the technical competency of the HVACR industry through validation of the technical education process. They provide student outcome assessments, technician certifications, educator credentialing, programmatic accreditation and professional development.

HVACi is the nation’s leading provider of residential and commercial HVAC and refrigeration damage assessments for insurance carriers. Its prompt inspections and actionable reports help insurance adjusters settle HVAC claims more quickly and with a higher degree of accuracy.