A Heating Group 1 Class II Contractor can work on "wet" or "water-based" comfort heating systems in single-family detached dwellings only. To be able to do this type of work on any type of building, including commercial and industrial, you would need a North Carolina Heating Group 1 Class I Contractor License instead.
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The book set includes all required references for the Heating Group 1 Class II Contractor exam. Orders placed before 2 PM are shipped the same day via UPS and a tracking number is emailed before 3 PM.