Heating, Ventilation, and Air Conditioning http://northeast.edu/Degrees-and-Programs/Heating-Ventilation-and-Air-Conditioning Northeast is one of the only schools in the area that offers certification exams through the Air Conditioning Refrigeration Institute (AHRI). You'll also receive 1,000 hours of lab time to practice what you learn in the classroom. You'll learn "go green" procedures that are friendly to the environment. In the program, you'll study the physical, mechanical, and chemical pr