How do I know if I need my air ducts cleaned? If after or during sleep you consistently experience headaches, nasal congestion, or other sinus problems, the rooms in your house have little or no air flow coming from the vents. Or if there is a musty or stale odour circulating through the air from the ventilation system, it is recommended to clean the air ducts as soon as possible. How often will I need to clean my home or business? It is recommended to clean the air duct systems at least once per year for proper maintenance of air quality. How long will it take to clean the air ducts? Usually a first time cleaning for a 2000 square ft space will take about 11/2 – 2 hrs. Can I keep the before/after pictures? Yes. We want our customers to remember how the air duct looked before it was cleaned by our professional service. Show your friends! A picture is worth 1000 words! Can I get my cleaning on the weekend? Absolutely! Fresh Air Duct Cleaning is open 7 days a week.