The premier accrediting agency for HVAC training programs is the NCCEA, the Partnership for Air-Conditioning, Heating, and Refrigeration, HVAC Excellence, North American Technician Excellence and Research, Environmental Protection Agency, and the Occupational Safety and Health Administration. You MUST select a college that has at least one accreditation.
It is also important to try and find small class numbers, which means you will receive one to one attention from the program teachers. The best colleges teaching HVAC courses will also have an on-campus science lab with professional-grade tools. Visit the campus and get a feel for the place, the instruction rooms, the facilities and talk to the teachers, if possible. Also find out if they provide any flexibility in scheduling classes for employed students, and how you might go about procuring financial aid, if you are eligible.
BEIGE BOOK: FED SEES 'MODEST TO MODERATE' GROWTH IN US BUSINESS ACTIVITY
The Federal Reserve's December Beige Book is