Duct Cleaning and Air Quality Duct Cleaning and Air Quality Providing industry-leading duct cleaning service and air quality products in the Ottawa, Orleans, Cumberland, Glengarry, Prescott & Russell, Clarence-Rockland, Hawkesbury and Embrun area since 1976. At Fernand Denis, we have three duct cleaning teams ready to serve you. Duct cleaning is important to maintain good indoor air quality and to reduce the amount of regular cleaning you have to do. It also helps your furnace run more efficiently. Over time, your ducts attract dust, allergens, debris and other pollutants. For optimal health and performance, you should clean your ducts every 3-5 years.For most of our duct cleaning services, we use Rotobrush® to ensure outstanding results. Rotobrush is more than a super powerful vacuum cleaner. It has a brush attached that, in combination with the suction, can remove the heaviest build-up within duct systems for a better more thorough cleaning. Our Indoor Air Quality Products At Fernand Denis, we’re pleased to offer customers the next step in home comfort. We carry all Lennox indoor air quality products, including air-handling units, air purification systems, high-efficiency particulate (HEPA) air filtration systems, germicidal lights, air humidifiers and dehumidifiers. These systems are ideal for families with young children, pets, asthma sufferers and customers who just want better air. Our systems help reduce skin irritation, integrate easily with existing systems, eliminate mould, bacteria, pollutants and more. Need a duct cleaning?Get the duct cleaning you need.