Cleaning and servicing of variable air volume (VAV) terminal boxes — the zone controllers that decide what air each part of your building gets.
VAV boxes are the terminal units tucked above your ceilings that throttle airflow to each zone. Because they sit at the end of the duct run, they collect the dust, debris and microbial growth that travels downstream — and then push it into the exact spaces people occupy. A dirty VAV box means a dirty zone.
Atlanta Air Experts cleans commercial VAV boxes — the box interior, damper, actuator and reheat coil — so each zone gets clean, properly controlled air. It’s detailed, access-panel work that most general cleaners skip.
We HEPA-clean the inside of the box and inspect the acoustic liner for dust loading and damage.
We clean the damper blade and linkage so it modulates airflow accurately instead of sticking.
Hot-water or electric reheat coils are cleaned to restore heat transfer and airflow in the zone.
We clean the inlet and any terminal filter where downstream dust accumulates.
Damp, dusty boxes grow mold; we inspect and apply an EPA-registered antimicrobial when needed.
We confirm the box responds to its controls so the zone holds its setpoint after cleaning.
We map the VAV boxes serving your zones and open code-compliant access without disturbing the ceiling grid.
The branch is isolated and put under HEPA-filtered negative pressure so debris is captured, not spread.
Interior, damper, actuator linkage and reheat coil are cleaned with the right tools for tight terminal units.
Where mold or biofilm is found we apply an EPA-registered antimicrobial labeled for HVAC use.
We confirm the damper modulates and the zone responds, then document each unit.
Zone-level air quality. The VAV box is the last thing your supply air passes through before it reaches a room. If it’s loaded with dust or harboring mold, that’s what your occupants breathe — no matter how clean the main ducts are.
Comfort and control. A sticking damper or fouled reheat coil means a zone that’s always too hot or too cold and an HVAC system fighting itself. Clean, free-moving boxes hold setpoint and stop the comfort complaints.
VAV cleaning is part of a complete commercial air duct cleaning program. Standards: NADCA ACR Standard.
Related: PIU cleaning · AHU cleaning · commercial filter replacement · U.S. EPA – indoor air quality
Serving Atlanta-metro offices, medical, education and multi-zone commercial buildings. Detailed, documented, minimal disruption.
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