AIR CONDITIONING, CLASS B - REGISTERED
A "class B air-conditioning contractor" means a contractor whose services are limited to 25 tons of cooling and 500,000 BTU of heating in any one system in the execution of contracts requiring the experience, knowledge, and skill to install, maintain, repair, fabricate, alter, extend, or design central air-conditioning, refrigeration, heating, and ventilating systems, including duct work in connection with a complete system. A "class B air-conditioning contractor" shall not perform any work such as liquefied petroleum or natural gas fuel lines within buildings, potable water lines or connections, sanitary sewer lines, swimming pool piping and filters, or electrical power wiring. "registered contractor" means any contractor who has registered with the department pursuant to fulfilling the competency requirements in the jurisdiction for which the registration is issued. Registered contractors may contract only in such jurisdictions.