Signs It’s Time Your Ducts Were Cleaned

With summer just around the corner, your air conditioning system is about to be really put through its paces. As is the case with any piece of equipment or major appliance, it requires regular maintenance.

Even if you take the time to replace the filters often, the ducts and vents in your HVAC system get dirty from being used every day, as these are the perfect places for allergens, dirt, and dust to hang around and accumulate. The dirt and dust are full of air pollutants and contaminants will not only make it uncomfortable for you and your family and could spread illness but will also make your air conditioner work harder than it needs to. Which in turn increases the energy bills and shortens your system’s lifespan.

Knowing that you need to clean your air ducts is one thing, though, but knowing when to clean your air ducts is another thing. To help you out, we have put together a list of signs to look out for that suggest you need to start contacting air duct cleaning companies.


Mold is a serious problem as it can not only exacerbate respiratory issues and allergies but can also quickly spread throughout the home. When your cooling and heating system develops condensation, this can cause mold to grow inside your ducts, particularly if you live in an area that is especially humid climate. While you may notice mold around the covers of vents, other parts are not as easy to access. Therefore, mold can often be hard to visually detect.

Although it is harder to see, it often presents itself with a musty odor. You need to act as soon as you can when there is mold in your ducts to help ensure you have good air quality in your home. It is best to rely on the services of professionals for this as they will be able to assess your problems, solve any mold issues and stop them from coming back.


Do you find your home always has a fine layer of dust, even if you regularly dust throughout your home? It’s likely your air ducts need to be cleaned out. Even if your home is incredibly clean, there is still likely to be some dust, dirt and pet dander, or other harmful contaminants inside the ducts. It may even be that dust is visibly coming out of your vents whenever the air conditioner is working.

Inspect the air supply and also the return vents in your house. Do these look dusty or dirty? If they do, remove the covers and filters, and have a closer look. If there is dust and debris on the outside and inside, it’s time to get the professionals out.

Increased Energy Costs

Has your cooling and heating costs increased? Although it is not unheard of for energy bills to fluctuate, they should stay more or less the same from one year to the next. If there has been a noticeable increase, however, it could be a sign that your ducts need to be cleaned, because when they are dirty the air cannot move so freely or efficiently through the system.