HVAC certification programs require a high school diploma, or the equivalent. Some programs state they prefer candidates to hold a bachelor's degree. A background in HVAC is often required.
Programs typically require four to seven courses in the certificate program. Common courses include designing cooling and heating systems, electricity and electronics, fundamentals of HVAC engineering, HVAC design calculations and duct work, HVAC system load calculations, and piping systems design.
Industry Competency Exams (ICE) are the most common HVAC exams. The exam covers residential air conditioning and heating; light commercial air conditioning and heating; and commercial refrigeration. North American Technician Excellence (NATE) offers more advanced examinations in air distribution, hydronics oil, gas furnaces, and HVAC efficiency analysis.