Booster Coil Cleaning: The Overlooked Step to Better HVAC Performance and Cleaner Indoor Air
When people think about duct cleaning, they often picture large air ducts or vents—but booster coils are just as critical, especially in commercial HVAC systems with zoned temperature control. If you’re managing a school, office, healthcare facility, or any commercial building with multiple zones, dirty booster coils can quietly wreck your system’s efficiency, indoor air quality, and comfort.
At Dirty Ducts Cleaning and Environmental, we specialize in full-service HVAC cleaning, including booster coil cleaning, air duct cleaning, and air handling unit (AHU) maintenance. Here’s why keeping your booster coils clean is one of the smartest maintenance decisions you can make.
What Is a Booster Coil and Why Does It Matter?
A booster coil is a type of heat exchanger found in many commercial HVAC systems. It’s designed to heat or cool air as it passes through ductwork, allowing for zoned temperature control in buildings like schools, offices, and hospitals. That means individual rooms or areas can maintain their own climate without wasting energy on the entire building.
Booster coils are typically installed in smaller branches of the ductwork, serving specific spaces. Their compact design and strategic placement make them essential for comfort—but also easy to overlook when it comes to HVAC system cleaning.
Signs Your Booster Coils Need Cleaning
Dirty booster coils reduce airflow, decrease energy efficiency, and negatively impact indoor air quality. Here’s how to know when it’s time to schedule booster coil cleaning or air duct cleaning:
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Rising energy bills with no clear cause
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Rooms that aren’t heating or cooling properly, even though the rest of the system seems fine
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Stale, musty, or smelly air circulating through specific zones
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Stuffiness and uneven airflow in individual offices or classrooms
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Complaints about comfort from building occupants
These are all signs that dirt, dust, or even mold could be clogging your coils and restricting performance.
Our Booster Coil Cleaning Process
At Dirty Ducts Cleaning, we use a proven method to deliver professional, NADCA-certified HVAC system cleaning that includes:
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Vacuum truck extraction: We connect to your ductwork to remove dust, debris, and contaminants from the system.
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Air washing of coils: Using compressed air, we clean each fin of the booster coil to restore maximum airflow and thermal efficiency.
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Antimicrobial fogging (when needed): If we identify signs of mold or microbial growth, we apply an EPA-approved disinfectant fog to sanitize the coil and surrounding areas safely.
- Booster coils, like all HVAC coils, are highly delicate—and we treat them with the precision they deserve. Our cleaning process is designed to preserve coil integrity while delivering a deep clean. We stand firmly by our promise: no damage, no bent fins—just clean, efficient coils that perform like they should.
Our goal is to restore your booster coils to like-new condition—without damaging the delicate coil fins—and to extend the life of your HVAC system while improving airflow, comfort, and cleanliness.
Case Study: Helping a Local School Save Big
A local school district reached out to us after struggling with stuffy classrooms and increasing utility costs. The issue? Severely clogged booster coils in several wings of the building.
Our team performed a complete HVAC coil cleaning, using our air washing and fogging process to remove buildup and restore performance. The results
were instant:
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Airflow was restored
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Energy usage dropped
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Classroom comfort dramatically improved
Teachers even gave our team a standing ovation, and the district reported that cleaning the coils not only solved the comfort issue but also reduced their heating and cooling costs moving forward. This wasn’t just maintenance—it was a money-saving investment.
Why Choose Dirty Ducts Cleaning?
With nearly 20 years of experience in duct cleaning, HVAC cleaning, and environmental services, we understand what it takes to maintain clean, efficient, and healthy commercial buildings.
We’re proud to be NADCA-certified, and our expert team is trained in cleaning booster coils, air handlers, ductwork, and more.
If your building uses zoned heating and cooling—or if you’re getting complaints about comfort, musty smells, or airflow—don’t wait.
Contact Dirty Ducts Cleaning and Environmental today to schedule a free on-site walkthrough for your booster coil system. Whether you’re dealing with a known issue or planning preventative maintenance, our team will provide a custom-tailored quote to keep your coils performing at their best.
