- HEP HVAC
- Rotating Brushes

Rotating Brushes
Rotating Brushes | Duct Cleaning | Heating and Air Conditioning | Charleston
Tucked between the sea breeze and the sweetgrass wafting through Charleston, your HVAC system quietly gathers dust, pollen, and coastal humidity. HEP’s specialized rotating-brush technology scrubs every twist and turn of your vents, lifting years of build-up that ordinary vacuums leave behind. The result is noticeably cleaner airflow, fewer allergens circulating through your Lowcountry home, and an HVAC unit that can finally breathe as easily as you do.
Schedule your duct cleaning with our local, certified technicians and enjoy the difference immediately—lower energy bills, a fresher indoor scent, and the peace of mind that comes from knowing your family is inhaling truly purified air. One visit from HEP, and even Charleston’s salty air can’t hold your ducts back.
FAQs
Why is duct cleaning with rotating brushes important for Charleston homes?
Charleston’s coastal climate is warm and humid for much of the year, which encourages mold, mildew, and dust mite growth inside HVAC ductwork. A rotating-brush cleaning physically scrubs the interior walls of supply and return ducts, removing the sticky film where these contaminants thrive. By pairing mechanical agitation with a high-capacity HEPA vacuum, we dramatically reduce airborne allergens, improve indoor air quality, and help your HVAC system move air more efficiently—something especially valuable during Charleston’s long cooling season.
How does your rotating-brush system differ from standard negative-air–only methods?
Traditional negative-air cleaning relies on suction alone; debris that clings to duct surfaces can remain after the job is done. Our system feeds flexible, nylon-bristled brushes deep into each trunk line and branch while a powerful vacuum creates negative pressure. The brushes loosen caked-on dust, pet dander, mold spores, and construction debris so the vacuum can capture them at the source. This two-step approach removes up to 98 % of particulate matter, delivering a more thorough cleaning in one visit.
How often should I have my HVAC ducts cleaned in Charleston’s humid climate?
National guidelines recommend every 3–5 years, but Charleston’s salt air, pollen counts, and humidity can shorten that interval. We generally advise homeowners to schedule an inspection every 2 years and plan on a full rotating-brush cleaning every 2–4 years if you have pets, recent renovations, or occupants with allergies or asthma. Commercial properties and vacation rentals may benefit from annual service.
Will rotating-brush duct cleaning damage my ductwork or HVAC components?
No. The brushes are made of soft, non-scoring nylon sized to match each duct diameter. They spin at a controlled speed that scrubs without scratching metal or tearing flex duct lining. Before any work begins, we inspect for loose or fragile sections and bypass them if repairs are needed first. All supply registers, return grilles, the blower cabinet, and coil are protected or cleaned according to NADCA standards, ensuring your HVAC system leaves in better condition than we found it.
What signs indicate I need professional duct cleaning?
• Visible dust puffs from registers when the system turns on • Persistent musty or mildew odors, especially after rain • Increased allergy or respiratory symptoms indoors • Dark buildup around vent covers or on ceiling tiles • Recent remodeling, drywall sanding, or floor refinishing • Rodent or insect activity in attic or crawlspace If you notice one or more of these issues in your Charleston home, an inspection can confirm whether rotating-brush cleaning is warranted.
What does your Charleston duct-cleaning service include and how long does it take?
A typical single-family home takes 3–5 hours. Our certified technicians will: 1. Perform a camera inspection of all accessible ducts. 2. Seal registers and create negative pressure with a HEPA filtration vacuum. 3. Insert rotating brushes through each register and main trunk, scrubbing all interior surfaces. 4. Fog the system with an EPA-approved antimicrobial (optional but recommended in humid zones). 5. Clean the blower, plenum, and evaporator coil surface area. 6. Replace the air filter and provide before-and-after photos. You receive a written report and a satisfaction guarantee backed by a local Charleston HVAC company thatʼs been serving the Lowcountry for over 20 years.