An HVAC air handler is a significant component of a heating and cooling system that is responsible for circulating air throughout the home. Proper maintenance and repair of air handlers are essential in order to keep the system running efficiently and to ensure the air quality in the home remains safe for occupants. Maintenance tasks include inspecting and cleaning the blower fan, checking the refrigerant levels, and inspecting and replacing belts and other components. When it comes to repairs, a qualified technician should be called to ensure the job is done correctly and safely. The technician should be able to diagnose and repair any issues with the air handler, such as bad wiring, damaged motors, and blocked condensate drains.