At Fresh Air Furnace Services, we’re raising awareness about good Air Culture, because it’s not just about cleaning your vents. It’s about maintaining optimal humidity levels, minimizing airborne bacteria, and keeping your HVAC system in good working order. You might not be able to see poor air quality, but that doesn’t mean you won’t fall prey to its effects—dry skin, rippling hardwood floors, or a furnace that sounds more like an angry mother bear than a machine pumping air. Dirty air ducts, improper filters, and unmaintained HVAC systems cause all of these problems—not to mention, they fill your home with dirty air..