Recommended Frequency: According to ASHRAE ACCA 180 Standards Table 5-1, Subsection G.
Annual Inspections are Recommended for Dirt and Moisture Accumulation in Air Ducts. We would Perform an Infield Video Inspection to Identify Systems that May Need Air Duct Cleaning.
If Cleaning is Needed, the Following Would be Proposed. We Would Prefer After Hours or During Unoccupied Periods That Would Allow Full Access and the HVAC Equipment to be turned off.
- Power Down Equipment and Prep Multiple Work Areas with Plastic, Drop Cloths, Etc
- Remove All Indoor Supply and Return Registers
- Run Video Inspection Camera in Multiple Locations to Show Inside of Air Ducting and Condition before Cleaning.
- Clean Removed Supply and Return Registers with an Approved Disinfectant
- Clean Inside of Air Duct Branches with Our Air Duct Cleaning Machine from Supply Register Locations back Towards HVAC Air Handling Equipment or VAV Boxes. Please Note: Our Machine Uses 3 VFD Controlled Vacuum Motors and a Motorized Rotating Brush to Lift Off the Dirt on the Inside of the Ducting and Pull the Dirt Into our HEPA Filter Storage Bags for Safe Disposal
- Identify Plenum Locations and Cut in Access Ports or Access Through Equipment to Clean the Inside of the Main Trucks, VAV Boxes, Y Branches, or Other Distribution Chambers.
- Run Video Inspection Camera in Multiple Locations to Show Inside of Air Duct Condition after Cleaning and Keep on File for Evidence when Requested for a period of 30 Day.
- Re-Install Prior Removed Supply and Return Registers, and Install Plates Over Access Ports Cut in and Seal.
- Turn Back on Equipment and Clean Work Areas.
Total Cost Depends on a Variety of Factors. Location, Unit Capacity which Helps Determine the Number of Air Duct Runs, and or the Number of Registers