It’s been a little more than a year since the release of the Air Conditioning Contractors of America’s (ACCA) Manual Zr, and so far, the manual, which focuses on residential zoning, is slowly gaining acceptance among contractors.

When it comes to zoning equipment, there’s no better source of information than the companies that make the devices. In an effort to share this knowledge and help contractors learn the intricacies of their systems, many zoning manufacturers are hosting training programs year-round.