ACCA accepts membership in the following categories:

• Contractors are companies that sell HVACR or related contracting services, including design, installation, and maintenance of HVACR systems, energy management and related services, IAQ services, etc.
   
• Manufacturers are companies that manufacture products which are sold to or used by HVACR contractors.
   
• Wholesalers/Ditributors sell products to HVACR contractors.
   
• Other Suppliers are all other companies that make available for sale any products or services (including consulting) to HVACR contractors.
   
• Government agencies are agencies of a federal, state, or local government (does not include public utilities)
   
• Utilities are entities which sell energy to the general public.
   
• Vocational members are schools that train HVACR technicians.
   
• Facility operator members are companies that manage commercial buildings and facilities and hire, but do not perform HVACR contracting services.

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