In a mechanical system, what defines 'labeled' equipment?

The term 'labeled' equipment refers to equipment that has undergone testing and meets certain specified standards set forth by recognized testing organizations. This labeling indicates that the equipment complies with safety and performance requirements, providing assurance to users and installers that it has been evaluated for its intended use and is safe and reliable. The label typically provides critical information such as safety ratings, energy efficiency classifications, and compliance with relevant codes or standards.

In the context of mechanical systems, recognizing labeled equipment is essential for ensuring that installations adhere to the International Mechanical Code and other relevant regulations, ultimately contributing to the safety, performance, and efficiency of the mechanical system. Equipment that merely has a lower price, is commonly available, or is energy-efficient may not have undergone this necessary testing and certification process, making labeled equipment the most reliable choice.