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Air Duct Cleaning FAQ


Air Duct Cleaning FAQ


Clean air ducts are something that most people take for granted. But, whether or not your air ducts are clean really does have an impact on your home’s air quality.

At Tidewater Heating & Air Conditioning, we are always asked questions about the importance of air duct cleaning Wilmington NC. So, we’ve compiled a list of the seven most frequently asked questions and we’re providing the answers to them here for your convenience.

#1: Why Should I Clean My Air Ducts?

It might not seem like it, but indoor air has been proven to carry two to five times MORE pollutants than outdoor air. And, as important as it is to change your air filter on a regular basis, disposable filters only remove about 10% of the pollutants from the air. This means that 90% of pollutants are still being broadcasted throughout the home every time the AC or furnace kicks on. These pollutants will often collect in the ductwork where they continually flow into the room when the forced air system runs.

#2: Can Mold Grow in My Ducts?

Mold spores need three things to thrive – moisture, a food source, and a stable temperature, and all of these can be found within your ductwork. Therefore, dirty ducts are prime breeding ground for mold. What’s worse is that the spores can then be forced into the room every time the air flows and this can be especially problematic for those suffering from allergies or asthma.

#3: Will Cleaning My Ducts Lower My Energy Bills?

If your ducts have not been cleaned in some time and dirt and debris has been allowed to build up inside of them, then cleaning the ducts will allow the air to move through them much easier and this can make your HVAC system run more efficiently. In addition, it will take longer for a home with dirty vents and ducts to cool down because the cold air will take longer to reach the livable spaces, thus increasing the time your AC runs.

#4: How Often Should Air Ducts Be Cleaned?

In most homes, the air ducts should remain clean for at least three years after being thoroughly cleaned and sanitized as long as an EPA registered biocide is applied by a qualified duct cleaning professional every 6 to 12 months. Or, if your HVAC system has a high arrestance filter on it and you have the biocide applied every year, then your ducts could stay reasonably clean for up to seven years.

#5: What Causes Air Ducts to Become Contaminated?

Think about all of the pollutants found in outdoor air. From pesticides and auto pollution to pollen and more. All of that enters the home, where it mixes with all of the contaminants already in the environment, such as dead skin cells, pet dander, chemicals from plastics and carpets, and more. All of these things run through your HVAC system and its ductwork every time you run it. Over time, they start building up inside the ducts along with dirt, dust, and grime.

#6: Which Parts of the Duct System are Cleaned?

A central HVAC system’s ductwork is comprised of three key parts – the supply and return grills, the supply and return vents, and the air handler. For the best results and to avoid recontamination, all three components need to be cleaned before the system is run.

#7: How Much Does Duct Cleaning Cost?

The cost of your duct cleaning depends on several factors, most importantly, the size of your home. Simply put, the bigger the home, the more extensive the network of ducts and thus, the more expensive the job is going to be. To obtain an estimate for your unique job, just call Tidewater HVAC for expert air duct cleaning Wilmington NC at 910-499-4755.

Trust Tidewater for Quality Air Duct Cleaning Wilmington NC

If you have recently moved into a new home or you have been living in your home for a few years and you haven’t had your air ducts cleaned yet, then now is the time. Call Tidewater today at 910-499-4755 and we’ll provide professional and courteous air duct cleaning that will leave you breathing easier.

Tidewater has been one of the leading and most trusted providers of commercial and residential HVAC service and air duct cleaning Wilmington NC for more than 42 years. Call us for HVAC service today and enjoy cleaner and healthier indoor air tonight.


Do you need more information? Tidewater Heating and Air Wilmington NC is always willing to help! Fill out the form below and we will reach out to you as soon as possible. If you have an emergency, please call (910) 499-4755.

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