At General Air Care Pro, technicians nurture their talent for ousting invaders from indoor atmospheres, even those invisible to the naked eye. They stave off allergies and illness primarily by cleaning heating, ventilation, and air-conditioning (HVAC) systems. If left untamed, these spaces can breed fungi, bacteria, viruses, and a thick dust layer that ruins the acoustics of in-vent garage bands. After scouring HVAC components from coils to gaskets, technicians can swap out disposable filters for new electrostatic air filters, permanent fixtures that lure filth to its doom using static electricity. Alternatively, they may mount UV-light air-filtration systems, which obliterate microorganisms with ultraviolet rays, in the mouths of existing air ducts. As qualified asbestos removers, they safely rid homes of the noxious substance and replace it with modern insulation.