People who choose to have their heating ducts cleaned tend to do so because their children or other family members are suffering from breathing problems. Air and furnace ducts, when uncleaned, breed mold and mildew and lead to poor air quality. Furnace duct cleaning will also improve the efficiency of your furnace.

Duct cleaning requires not only of the ducts themselves, but of the entire furnace system: the blower, heat exchangers, cooling coils, and condensate pan. When these parts are clean, air flows efficiently through the entire system.

If you or someone in your household is experiencing health problems, and you suspect your furnace air ducts might be the problem, call a duct cleaning company. They can inspect your furnace ducts, and will most likely use robotic video equipment to show you how dirty the ducts actually are. If the video surveillance reveals mold anywhere in the duct system, it’s time to clean your furnace ducts.

Dust and mold can appear to be similar on a scan of the ducts. If the furnace cleaning professionals are unsure, touch a piece of tape to the inside of a furnace duct, and have a lab analyze it for you.

Methods of Cleaning Furnace Ducts

There are several ways to clean furnace ducts. One way is to use an extremely powerful vacuum, which remains in a truck outside. A long hose runs to the furnace area and attaches to the furnace ducts. From the rooms, mechanical brushes, air jet brushes or air snakes pull the dust loose within the furnace ducts.

Another way to clean furnace ducts is with a smaller vacuum unit located inside your house, in the vicinity of the furnace. This vacuum should contain a HEPA exhaust filter to ensure that the dust from the furnace ducts does not fill the air in the room.

A third way of cleaning furnace ducts is to run a rotating brush that is attached to a vacuum nozzle through the furnace ducts.

When selecting methods and services for your furnace duct cleaning, look for quality over cost. A poor quality furnace cleaning job can leave you worse off than before, as it can pull the dust off the furnace duct walls without sucking it all in.

Remember, furnace duct cleaning costs money, so before you sign a service contract, ensure that the company has given you sufficient visual evidence that furnace duct cleaning is necessary. Also, make sure your furnace duct cleaning provider can explain to you in detail how he/she will clean the entire system, not just the ducts. If one component of the system is left uncleaned, it may recontaminate the entire system, defeating the purpose of having put out the cash for the cleaning in the first place. Ask that your furnace duct cleaning provider give you a full duct-length visual inspection after the cleaning is complete, preferably with a camera inside the ducts.

cpaulsen@homerenovationguide.com

With increasing attention focused on health concerns from biological contaminants and dust in the indoor environment, the American Lung Association recommends the use of duct cleaning:

Duct cleaning has not been shown to prevent health problems, nor is scientific evidence currently available to conclusively demonstrate that particle (e.g. dust) levels in homes increase because of dirty air ducts. The U.S. Environmental Protection Agency does not recommend that air ducts be cleaned routinely, but only as needed.

When health problems are believed to be the result of biological contaminants or dust in indoor air, it is important to first determine that contaminated ducts are the cause of the health problems and verify that the ducts are, in fact, contaminated. The source of the problem may lie elsewhere, so cleaning ducts may not permanently solve the problem.

People who have their ducts cleaned should verify that the service provider takes steps to protect individuals from exposure to dislodged pollutants and chemicals used during the cleaning process. This may involve using HEPA filtration when cleaning, providing respirators for workers and having occupants vacate during cleaning.