Thinking of making the HVAC industry a career, the median annual salary for an HVAC technician in the United States is almost $50,000 With experienced technicians pulling down an average of almost 80,000 Top earners can surpass six figures, and that's all without a college education.
I would recommend lots of HVAC education about theory, operation, installation methods, etc.etc. if they do not want to attend college. I'd recommend at least 2 years of jr college plus the above. The industry isn't any good with those who only focus on the money.