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Website homepage for the Air Conditioning Contractors of America (ACCA).

Standard providing nationally recognized, manufacturer-endorsed set of inspection tasks for HVAC maintenance.

AHRI-hosted directory of residential products meeting CEE's highest tier

Standard providing a universally accepted definition for quality installation for residential and commercial heating, ventilating, and air conditioning applications.

Document detailing the requirements, roles, and obligations for participants in an organized effort, ensuring that HVAC installations comply with the ANSI/ACCA 5 QI – 2010 (HVAC Quality Installation Specification) QI Standard.

Report describing information from DOE about rules and standards for residential air conditioners and heat pumps.

U.S. Code of Federal Regulations energy and water conservation standards for consumer products including home appliances and HVAC equipment.

This directory contains the I=B=R Ratings for cast-iron, steel, aluminum and copper boilers, baseboard and finned tube radiation, indirect-fired water heaters, effective as of the date of this publication.

Code establishing the rules of safety relating only to pressure integrity for the design, fabrication, and inspection of boilers and pressure vessels during construction which was published in the year 2021 and is available to order at the referenced link.

Code establishing the rules of safety relating only to pressure integrity for the design, fabrication, and inspection of boilers and pressure vessels during construction which was published in the year 2017 and is available to order at the referenced link.

Standard covering sizing strategies for all types of cooling and heating equipment, as well as how to use comprehensive manufacturer’s performance data on sensible, latent, or heating capacity for various operating conditions.

Standard covering equipment sizing loads for single-family-detached homes, small multi-unit structures, condo­miniums, town houses and manufactured homes.