Three categories of membership:
Contractor membership is open to any company engaged principally in the heating, ventilation, and/or air conditioning business as a contractor, who becomes a contractor member of the national association, and who is not a subsidiary, affiliate, division, or related entity of a public utility.
Associate membership is open to companies engaged in (a) manufacturing, (b) wholesaling, jobbing, and selling allied products or equipment principally to contractors and/or (c) supplying fuels, energies, or other services beneficial to the industry. Associate membership is not open to retailers or other suppliers who sell principally to the general public. Associate members have voting rights and can hold an elected office. Subsidiaries, affiliates, related entities, and divisions of associate members are not eligible for membership in the association.
Vocational membership shall be available to teachers, students, heating inspectors, and other such individuals having interest in the environmental systems industry. Vocational members shall not have the right to vote and hold an elected office.
Membership Dues for Lobbying Efforts: It is estimated that 62% of the membership dues is non-deductible due to lobbying efforts.