ACCA

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The Air Conditioning Contractors of America (ACCA) is a professional association that represents the interests of HVAC contractors across the United States. This organization develops industry standards, training programs, and resources to ensure quality, safety, and consistency in the design, installation, and maintenance of HVAC systems. ACCA is well-known for creating technical manuals such as Manual J (residential load calculations), Manual S (equipment sizing), and Manual D (duct design), which guide professionals in performing accurate and efficient HVAC work. Essentially, ACCA helps set the benchmarks for best practices and supports contractors in delivering effective heating, ventilation, and air conditioning solutions.

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