Who and What is ACCA?

WHO – is a non-profit association serving more then 60,000 professionals and 4,000 businesses in the HVAC community, working together to promote professional contracting, energy efficiency and healthy, comfortable indoor environments.

WHAT – they are the go-to organization for all residential home indoor energy conservation, design, and installation procedures. All NATIONAL, STATE, and LOCAL building codes utilize ACCA’s expertise in the writing of the Building and Energy Conservation Codes. ACCA’s technical manuals are the bedrock of air conditioning in America. ACCA manuals will be referred to many times throughout this website.

  • Manual J, Residential load calculations
  • Manual D, Residential duct design
  • Manual B, Air balancing and testing
  • Manual S, Residential equipment selection

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