When indoor air quality issues arise, duct cleaning should be one of the corrective actions you consider. Your HVAC system doesn’t ventilate, it recirculates. All conditioned air in your home travels up to seven times per day through your cooling and heating ductwork. Dust, microorganisms and chemical contaminants that accumulate in the ductwork over the years will inevitably infiltrate your breathing air, too. Dirty ducts may represent anything from a simple housekeeping annoyance to the source of allergic responses and respiratory symptoms.
Duct cleaning isn’t a cure-all for air quality problems. However, if a thorough inspection of the entire span of ductwork by a qualified, established HVAC professional indicates the need for a cleaning procedure, here’s what to expect:
- Access: Duct cleaning technicians access many areas of your ductwork by removing grills and end caps of duct branches and opening service ports. Where no such access points exist, technicians will cut small holes in the ducts to insert cleaning equipment. These holes will be professionally closed and sealed after the cleaning.
- Dislodging contaminants: Accumulations of dust and other substances may have become stuck to the interior surfaces of ductwork. Instruments such as powered brushes and high-pressure air guns are utilized to loosen contaminants for later removal.
- Contaminant removal. A powerful vacuum is connected to the ductwork in order to induce negative air pressure as contaminants are removed at various access points. This keeps dust and other loosened residue from re-contaminating the home.
- Component cleaning: System components such as the blower fan and coils are also cleaned. New system air filters are installed.
- Disinfection and deodorant: If mold was detected inside the ducts, EPA-approved biocides may be applied to nonporous surfaces. Deodorants can be used if musty odors were one of the air quality issues.
- Finishing touches: Following the procedure, all components will be reconnected, access holes will be sealed, and the system will be tested for proper airflow to all rooms.
The trusted source of HVAC expertise in Sarasota and Manatee counties, Aqua Plumbing & Air Quality Service is here to answer all your questions about duct cleaning to improve your indoor environment.
Written by John Miller