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 Post-Cleaning Consumer Checklist   
This checklist has been taken from:
EPA-402-K-97-002, October 1997

A thorough visual inspection is the best way to verify the cleanliness of your heating and cooling system. 
A thorough visual inspection is the best way to verify the cleanliness of your heating and cooling system.

All portions of the system should be visibly clean - i.e., such that you cannot see any debris with the naked eye. Have the contractor show you the following areas in your system after the cleaning work to verify that the job was performed satisfactorily:

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Yes No
General Did the contractor clean the entire heating and cooling system, including ductwork and all components?
Heating Is the heat exchanger surface visibly clean?
Cooling Are both sides of the cooling coil visibly clean?
Components 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?
Access Doors & Covers Are newly installed access doors attached with more than just duct tape (i.e., screws, rivets, mastic, etc.)?
  With the system running, are all access doors or covers tight (no air leaks)?
Plenums Is the return air plenum free of visible dust or debris?
  Do filters fit properly and are they the desired efficiency?
  Is the supply air plenum (directly downstream of the air handling unit) free of moisture stains and contaminants?
Blower Are the fan blades clean and free of oil and debris?
  Is the fan compartment free of visible dust or debris?
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.)
Fiberglass Duct Surfaces Is the fiberglass material in good condition (i.e., free of tears and abrasions; well adhered to underlying materials)?
Air Vents Have your air vents been firmly re-attached to the walls, floors, and/or ceilings?
  Are the air vents visibly clean?
System Operation Does the system function properly after cleaning?
  Is the system operating free of any new noises?

If you answered "No" to any of the above questions, this may indicate a problem with the job. Speak to your contractor regarding these issues and ask him to make corrections to his work such that you can answer all questions "Yes".

This checklist is taken from:
Indoor Environments Division (6607J)
Office of Air and Radiation (OAR)  
EPA-402-K-97-002, October 1997
"Should You Have the Air Ducts in Your Home Cleaned?"


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