The Northwest HVAC/R (heating, ventilation, air conditioning and refrigeration) Association was originally formed in 1958 by the involvement of HVAC/R contractors and the local utilities to provide heating, ventilation, air conditioning and refrigeration training while providing a forum for passing along information to promote safety in HVAC/R service and installation.Today, we are the leading membership organization representing HVAC/R contractors, businesses and maintenance departments in the Northwest. Provides quality education and training, promoting the highest standards of workmanship, improving the quality of installation and service, and facilitating the enforcement of applicable codes and standards of the industry.