Air Conditioning & Refrigeration Contractor

Exam

Not reported

Education

Specific course

Experience

Experience

Background check

Specific type of conviction prohibited

Air conditioning and refrigeration contractors usually work with environmental air conditioning, maintaining indoor air at the proper temperature, humidity, cleanliness, and circulation for human comfort. They also work with commercial refrigeration and process cooling and heating, including large refrigeration systems and walk-ins. Persons who design, construct, maintain, service, repair, or modify any environmental air conditioning (which includes heating), commercial refrigeration, or process cooling or heating system must be licensed. Each license must be endorsed either for environmental air conditioning, or commercial refrigeration/process cooling and heating, or both. The Class A license entitles the licensee to perform air conditioning and refrigeration contracting, of each type for which the license is endorsed, on systems, products or equipment of any size or capacity. The Class B license entitles the licensee to perform air conditioning and refrigeration contracting, of each type for which the license is endorsed, on systems, products or equipment of not more than 25 tons cooling capacity or not more than 1.5 million BTU per hour output heating capacity. This requirement does not apply to those who work on portable or self-contained ductless air conditioning or heating units that have a cooling capacity of three tons or less, or a portable or self-contained heating unit that does not require the forced movement of air.