A heating, air conditioning, and refrigeration mechanic and installer is often referred to as an HVAC technician. HVAC technicians work on the heating, ventilation, cooling, and refrigeration systems in residential homes, commercial buildings, offices, hospitals, and factories. These will eventually control the quality of air in these buildings.

Skilled tradesmen are always in high demand. Depending on your training, experience, and location, you could wind up with a six-figure income and job security for life. Best of all, most jobs in the skilled trades don’t require a bachelor’s degree. Here are three examples that might spark your interest.