IAQ/HVAC Checklist

  • 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?
  • 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?
  • 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?
  • Are interior ductwork surfaces free of visible debris? (Select several sites at random in both the return and supply sides of  the system)
  • Is all fiberglass material in good condition (I.e. free of tears and abrasions; well adhered to underlying materials)?
  • 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?
  • Is there a computer controlled thermostat control?
  • Is the thermostat normally operated in the “AUTO” or the fan “ON” position?(CIRCLE ONE)
  • Is the thermostat programmed to operate only when the space is occupied?
  • Have all registers, grilles, and diffusers been firmly reattached to the walls, floors, and/or ceilings?
  • Are the registers, grilles, and diffusers visibly clean?
  • Does the system function properly in both the heating and cooling modes after cleaning?
  • Is there any visible/residual moisture on the registers?

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