The Air Conditioning Contractors of America said its list of participants in the 2013 corporate partners program is the largest ever.

The organization is expecting more companies to join.

Officials said the program enables HVACR industry suppliers and manufacturers to demonstrate commitment to ACCA and its members through support of the association’s activities. Corporate partners sponsor events as well as help the association with its advocacy efforts.

“ACCA is extremely pleased that all of our 2012 corporate partners have renewed their commitment for 2013 and many more companies are signing on to support ACCA,” said Paul T. Stalknecht, ACCA’s president and CEO. “The commitment these companies have made shows that ACCA’s contractor members are a vital part of their success, so they are willing to invest in and support the quality programs that ACCA offers to help contractors be more professional and continue to thrive regardless of market conditions that are beyond their control.”

The 2013 partners include 3M/Filtrete, AC Leak Freeze, CallSource, Carrier Corp., Comfort Institute,, DaikinAC Americas, Emerson Climate Technologies, Federated Insurance, Fujitsu, Goodman Manufacturing, GreenHomes America, Honeywell , Jackson Systems, Johnson Controls Inc., Lennox, Mitsubishi Electric, NexStar Network, Rheem Manufacturing, Trane, North American Technician Excellence, and Snips’ sister publication the Air-Conditioning, Heating and Refrigeration News.