INTERNATIONAL CODES & STANDARD :-

The following international code & standard term are generally used in HVAC.

ASHRAE    : American Society of Heating, Refrigeration & Air conditioning Engineers.

ARI             : Air conditioning and Refrigeration Institutes.

ASTM         : American Society of Testing & Materials.

NFPA           : National Fire Protection Association.

NEMA         : National Environment Management Authority.

SMACNA    : Sheet Metal and Air conditioning Contractors National Association.

UL                : Underwrites Laboratories.

OSHA           : Occupational Safety and Health Administration.

IAQ               : Indoor Air Quality.