CA C-20 HVAC case studies

The CSLB C-20 Warm-Air Heating, Ventilating and Air-Conditioning Contractor license is the California credential that allows a business to contract for the installation, alteration, and repair of warm-air heating, ventilating, air-conditioning, and refrigeration systems. It is aimed at working technicians and installers who are ready to move into ownership or qualifier roles, and at existing businesses adding a specialty. Licensing requires passing a trade examination plus a separate Law and Business examination; the CSLB publishes the current item counts, time allowances, fees, and passing standard in its candidate information bulletin, so check cslb.ca.gov for the numbers in force on your test date. The trade exam is closed book and computer based, and it is weighted toward practical field judgment rather than memorized trivia: load and layout planning, duct design and fabrication, the refrigeration cycle and its components, heating equipment and heat pumps, motors and controls, piping and refrigerant handling, evacuation and charging, troubleshooting, and jobsite safety and code compliance. The CA C-20 HVAC case studies are 5 cases and about 4,697 words.