Air Duct Cleaning: Does It Really Improve Air Quality?

Spring Cleaning
With temperatures rising, you may begin throwing open windows and allowing the warmth of spring to clear away the gloom of winter. You may also feel the need to clean, freshen up your home, and breathe clean, natural air again. Naturally, your thoughts may turn toward the source of that air in your home—your air ducts.

So, you might want to hire an air duct cleaning service, thinking clean air ducts equals clean air. Before paying hundreds, if not thousands, of dollars for the service, it’s best to ask one important question: Does cleaning air ducts genuinely improve indoor air quality?

What is Air Duct Cleaning?

Air duct cleaning starts with a comprehensive evaluation and then cleaning of your air and heating system to remove debris, contaminants, and infestations by vermin (rats, cockroaches, etc.). A service provider will typically do an on-site visual inspection of the system, propose a cleaning plan, and then offer optional services like biocide spraying and sealing spray.

It is essential that during the inspection process, the service provider thoroughly checks the system, as contaminants may be found deeper inside the system. For example, mildew tends to grow in places of high moisture, such as around drip pans and condensate lines.

When To Clean Your Air Ducts

While it may seem practical to clean your air ducts to improve overall air quality and extend the life of your air conditioning system, there is little evidence to support regular cleaning.

Most particulates are caught by the system’s air filters, which should be checked and changed three to four times a year, and dust in or around vents and registers can easily be cleaned with a vacuum.

Some research indicates cleaning increases the life of the air conditioning system, but it’s only effective if the entire system is cleaned. This includes not only the air ducts but the fans, filters, heat exchangers, and more. There is little evidence to suggest that only cleaning the air ducts improves efficiency and lifespan.

There is also a danger in getting your air ducts cleaned too regularly. Improper handling by an untrained or careless service provider can cause damage, reduce system efficiency, and lead to costly repairs.

So, when should you have your air ducts cleaned?

• If you detect a musty smell coming from the vents in your home, which may indicate mold or mildew growth.
• If your system seems to cycle on and off more frequently than usual.
• If your system is blowing warm air, which may indicate insufficient cool air reaching the system.
• If someone in your household experiences allergy symptoms such as itchy eyes, congestion, or a scratchy throat while indoors.
• If you notice scratching sounds from animals or signs of insects in your ductwork.

Additionally, if you are using fuel-burning heat sources such as wood-burning fireplaces or gas furnaces, it is important to have them checked before use. Blocked or clogged ducts can cause carbon monoxide to back up into your home, creating a serious safety hazard.

Choosing a Service Provider

There are a wide range of service providers available, so it is important to research each provider thoroughly before making a decision.

Here are a few things to keep in mind when choosing a provider:

• Check their ratings: Look at platforms like Angi or Checkbook to review customer feedback, pricing, and service quality.
• Use of chemicals: Understand what chemicals will be used, especially biocides, and any potential health risks associated with them.
• Conduct your own interview: Ask questions and only move forward when you feel confident in their answers.
• Equipment: Ensure proper tools are used, including HEPA-filter vacuums and appropriate brushes for your duct type.
• Check their license: Verify licensing requirements in your state and confirm the provider meets them.
• Outside dryer vents: Make sure dryer vents are included, as they can become fire hazards if clogged.
• Get an estimate upfront: Request a written estimate including labor time, rates, and terms in case of interruptions.

Finally, have the provider explain exactly what will be cleaned and how. Cleaning only the air ducts is not enough—ensure the entire system is addressed, including fans, filters, condensate lines, and drip pans. Incomplete cleaning can lead to mold regrowth and reduced system performance.

Questions? Call us!

If you have any questions or concerns about your air conditioning system, give us a call, email us through our website, or reach out on Facebook. Our professional technicians are ready to help keep you and your family safe and comfortable this summer.

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