As a duct cleaner, it is your job to clean air ducts for heating and cooling systems. Your duties include cleaning these systems, providing basic maintenance, and performing inspections. The job is often the first step for a career as a heating, ventilation, and air conditioning (HVAC) technician. There are no formal qualifications to become a duct cleaner, but you should have customer service experience, adequate physical fitness, and comfort working within cramped or confined spaces. You often work inside a home, business, or school where and while others are present. Some HVAC companies offer duct cleaning positions as apprenticeships to learn the basics of heating, cooling, and ventilation systems.