The latest advances in air quality combine ultraviolet-light technology and high-efficiency air filters to combat air pollution in your home. If allergies or asthma are a problem, you may want to invest in a heating and cooling system that reduces indoor air pollution and improves air quality. Cooking odors, cleaning chemicals, pet dander, dust and pollen can make indoor air unhealthy for you and your family. Look for HVAC systems that offer high-efficiency air cleaning with HEPA filters. HEPA removes most particles from the air.