Earnings

Median annual income nationally of heating, air conditioning, and refrigeration mechanics and installers was $43,640 in May 2012. The lowest 10 percent earned less than $27,330 and the top 10 percent earned more than $68,990.

Source:

Bureau of Labor Statistics, U.S. Department of Labor, Occupational Outlook Handbook, 2014-2015 edition, Heating, Air Conditioning, and Refrigeration Mechanics and Installers.