Which of the following is NOT included in the systems Arizona Commercial Air Conditioning Contractors can repair?

The topic pertains to the scope of repair services that Arizona Commercial Air Conditioning Contractors are authorized to perform. Cooling towers are typically part of the broader category of mechanical systems that require specialized knowledge and equipment for maintenance and repair. In many cases, these towers are associated with larger, complex HVAC systems used in commercial settings, which may include aspects of plumbing and water management.

In Arizona, many regulations and licensing requirements delineate what contractors can handle, especially when it comes to systems that involve both mechanical and water treatment components. While contractors certainly can work on ductwork, pneumatic controls, and water treatment devices, cooling towers often demand specific expertise that might fall outside the standard licensing or training provided for general HVAC contractors. As a result, Arizona Commercial Air Conditioning Contractors may not be authorized to repair cooling towers directly, hence the choice indicating that cooling towers are not included in their repair scope is accurate.