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Air Duct / AHU Cleaning
An air duct before (left) and after cleaning (right).
Project Details
- Client: International Communications Technology Firm - Durham, NC
- Project: Cleaning of Ducts and Air Handling Units; Encapsulation
- Contract Value: $163,000
Related Services
Description of Work
MARCOR's work addressed 30 linear feet of ducts in each of 29 separate units -12 units in NC 1, 2, and 3 and 17 units in NC 0. MARCOR also encapsulated the intake portion of the air-handling units (AHUs) and re-insulated the fan portions in NC 0 with a closed-cell moisture-resistant insulation.
Mechanical and hand cleaning of each AHU included the following tasks:
- Removal of all filters and cleaning of filter racks
- Steam cleaning of coils
- Scrubbing all drainage leading from unit and inspecting all drain tubes
- Scrubbing and cleaning all interior walls affected by pollutants with neutralizing agents
- Cleaning of drain trays/pans
- Cleaning of fan unit
Duct cleaning (84" x 22" x 30 ft.) included the following:
- Inspection of all duct work
- Installation of CamLock doors
- Surface cleaning (mechanical means)
- HEPA-cleaning of duct sections that had insulation
- Encapsulation of insulation
A third-party independent air-monitoring firm that provided necessary services and conducted air sampling/analysis before, during, and after the duct-cleaning procedures.
All work was performed in confined spaces, requiring experienced technicians trained and certified in confined space entry.
