How to Determine if the Duct Cleaner Did A Thorough Job

According to the EPA, the following checklist is available to determine if the air conveyance system has been cleaned properly. See below:

A thorough visual inspection is the best way to verify the cleanliness of your heating and cooling system. Some service providers use remote photography to document conditions inside ducts. All portions of the system should be visibly clean; you should not be able to detect any debris with the naked eye. Show the Post-Cleaning Consumer Checklist to the service provider before the work begins. After completing the job, ask the service provider to show you each component of your system to verify that the job was performed satisfactorily.

If you answer “No” to any of the questions on the checklist, this may indicate a problem with the job. Ask your service provider to correct any deficiencies until you can answer “yes” to all the questions on the checklist.

Post Cleaning Consumer Checklist Yes No
___Did the service provider obtain access to and clean the entire heating and cooling system, including ductwork and all components (drain pans, humidifiers, coils, and fans)?
___Has the service provider adequately demonstrated that duct work and plenums are clean? (Plenum is a space in which supply or return air is mixed or moves; can be duct, joist space, attic and crawl spaces, or wall cavity.)

___Is the heat exchanger surface visibly clean?

Cooling Components
___Are both sides of the cooling coil visibly clean?
___If you point a flashlight into the cooling coil, does light shine through the other side? It should if the coil is clean.
___Are the coil fins straight and evenly spaced (as opposed to being bent over and smashed together)?
___Is the coil drain pan completely clean and draining properly?

___Are the blower blades clean and free of oil and debris?
___Is the blower compartment free of visible dust or debris?

___Is the return air plenum free of visible dust or debris?
___Do filters fit properly and are they the proper efficiency as recommended by HVAC system manufacturer?
___Is the supply air plenum (directly downstream of the air handling unit) free of moisture stains and contaminants?

Metal Ducts
___Are interior ductwork surfaces free of visible debris? (Select several sites at random in both the return and supply sides of the system.)

Fiber Glass
___Is all fiber glass material in good condition (i.e., free of tears and abrasions; well adhered to underlying materials)?

Access Doors
___Are newly installed access doors in sheet metal ducts attached with more than just duct tape (e.g., screws, rivets, mastic, etc.)?
___With the system running, is air leakage through access doors or covers very slight or non-existent?

Air Vents
___Have all registers, grilles, and diffusers been firmly reattached to the walls, floors, and/or ceilings?
___Are the registers, grilles, and diffusers visibly clean?

System Operation
___Does the system function properly in both the heating and cooling modes after cleaning?

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