Heating, Ventilation and Air Conditioning systems all fall under the expertise of HVAC professionals. In general, HVAC Technicians can design, install, maintain, and repair heating, air conditioning, and refrigeration systems of all types.
Technicians often specialize in either installation or maintenance and repair, although they are trained to do both. They also may specialize in doing heating work or air-conditioning or refrigeration work. Some specialize in one type of equipment—for example, hydronics (water-based heating systems), high velocity systems, solar panels, or commercial refrigeration.