What type of installation is a holder of a Master Class B license NOT qualified for?

A holder of a Master Class B license is not qualified for systems with an input capacity over 1,000,000 BTU because this designation specifically limits the size and complexity of the systems that can be installed or serviced by the license holder. Master Class B licenses are intended for smaller systems, such as those typically found in residential or low-capacity commercial applications.

Systems with inputs exceeding 1,000,000 BTU usually require a higher level of expertise and a different licensing classification, as these systems often involve more stringent regulations and safety requirements due to their size and potential for increased risks.

In contrast, installations in commercial establishments, residential heating systems, and basic HVAC installations fall within the qualifications of a Master Class B license, allowing the license holder to perform work in these areas without surpassing their licensing limitations.