Vent and Duct Cleaning

By HomeAdvisor

Updated May 7, 2020

On This Page:

  1. Vent & Duct Cleaning & Indoor Air Quality
  2. How Cleaning Works
  3. 3 Cleaning Tips

Duct cleaning is one of those tasks that it’s easy to forget about. Since ducts and vents are often overlooked, many homeowners might not even remember the last time they had them attended to. The fact is, however, that duct and vent cleaning may have health advantages, and might even reduce your energy bills and extend the life of your forced air system.

Vent and Duct Cleaning and Indoor Air Quality

One thing to consider when you’re thinking about vent and duct cleaning is the fact that indoor air quality is decreasing. This is due in part to the popularity of high-efficiency windows, doors, and increased insulation that reduce the amount of air transfer between inside and outside. Though these fixtures are great when it comes to reducing energy costs and making a room more comfortable, are often not supplemented with any additional ventilation, causing pollutants that enter the home to remain inside instead of leaking out through drafty windows and gaps.

The verdict still isn’t in on whether or not duct and vent cleaning is going to improve indoor air quality in every situation. Though there is literature out there to support either side of the debate, we do know that in certain cases, duct cleaning is likely to find and remove harmful molds, fungus, and/or microbes from an infected system. At the very least, duct and vent cleaning is not going to do your home any harm, and there is a chance that it will actually increase the quality of your indoor air.

How Duct and Vent Cleaning Works

There are two ways of duct and vent cleaning. One system is connected into the ducting to provide suction. A high-pressure air hose is passed through the ducting to remove the particles from the interior. The other system uses a large specialized vacuum attached to a hose and a brushing system that is run through the ducting. Both systems are effective when operated by properly trained personnel.

Consult a Cleaning Pro

A proper cleaning should include the following: cleaning of all registers, inside the ducting, and the interior of the heating and ventilating system.

The furnace fan must be cleaned, and if you have air conditioning or a heat pump, the coils inside the system must also be thoroughly cleaned. Finally, a disinfectant can be fogged through the cleaned system to eliminate any mold, bacteria, and dust mites that might remain.

Proper cleaning of a home should take a minimum of three to five hours, depending on the size of the house. If the home has more than one heating and cooling system, or the system is located on the roof, it can take longer. Most duct cleaning companies base their price upon square footage and/or the number of registers, systems, and levels to be cleaned and charge between $90 and $125 per hour to properly clean a duct system.

If a much lower price is offered, a consumer needs to make sure that the price includes a thorough cleaning, including registers, the inside of the ductwork, and all the fans and coils. Charging extra for cleaning fans and coils is unreasonable because those steps are mandatory for having a properly cleaned system.

3 Air Vent Cleaning Tips

Use these three tips to keep your vents clean:

  1. Vacuum your intake vent. Run your vacuum over your vent intake to eliminate dust and dirt.
  2. Wipe down your intake vent. Remove your intake vent and wipe down both sides with a wet rag to get rid of interior grime.
  3. Clean between the vent blades. Wrap a butter knife in a cloth and run it between the vents to eliminate hard-to-reach dust and dirt.

Hire a Pro To Clean Your Ducts & Vents


  1. Max Jones, May 15:

    We’ve never had an air duct cleaning service come out to our home, and I think that we could really benefit from having a professional come do that. My kids have allergies, so improving our air quality could work wonders for them! I’m glad you talked briefly about the two different systems, so I can now be familiar with whatever technique that professional we hire uses to get our air duct cleaning done!

  2. Callum Palmer, October 5:

    I agree, if there’s one reason to have your HVAC system professionally cleaned then it has to be about air quality. After all, air ducts can get very dirty, very fast and start spraying stuff like dust and debris into the air. If you can get that stuff cleaned out by a professional than it becomes much easier for people to breathe the air in that area.

  3. Donna Nutter, November 3:

    I have very little knowledge about air ducts. I have changed heating and air conditioning filters, that is basically the extent of my personal involvement. After reading this article I can understand the importance of having your ducts cleaned. The disinfectant is also something I did not know was used when cleaning ducts. I can understand the importance of using a disinfectant. Moving forward I will pay attention to having my ducts cleaned and not just limit my duct maintenance to replacing filters.

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