The frequency of duct cleaning in your home depends on your lifestyle. Industry professionals recommend having your air ducts and grills inspected every two years, and having them professionally cleaned every five to seven years, depending on the conditions of your home.

The National Air Duct Cleaners Association (NADCA), the organization that provides training, education and certification, which has set the standard of the American HVAC industry, does not recommend a specific time period between duct cleanings. The NADCA leaves the decision to the homeowner, and adds that certain factors may require more frequent cleanings. Factors such as smoking in the house, pets that shed lots of hair and dander, water contamination or damage to the home or HVAC system, residents with allergies or asthma who might benefit from a reduction of indoor air pollution, home renovations or remodeling. The NADCA also recommends air duct cleaning prior to occupancy of a new home.

It is important to make sure that the contractor you select uses "source removal" methods when cleaning your duct system. This method uses a specialized, powerful vacuum, which sucks air and dirt through the system while brushes loosen contamination.

At Bradley Mechanical, we use the Rotobrush, which has been the number one residential air duct cleaning system for over 20 years. We have recently invested thousands in the new Rotobrush Air+, which has 30 percent more suction power than previous models. The removable pod design allows us to take the Rotobrush into previously inaccessible spaces.

The NADCA warns consumers about "blow and go" companies. These are air duct cleaning companies that advertise suspiciously low prices. Many of these companies have been known to persuade (a polite way to say "con") homeowners into buying unneeded services upon arrival at their homes.

Our advice? Stick with contractors that you know and trust. If you would like to schedule an appointment, just give us a call at 804-748-6728.