Inspection Training

How to Inspect the AC Compressor Cabinet

While the inspector is inspecting the air conditioning unit the cabinet should be checked to make sure that it is level and that the coil fins are not clogged or damaged. Please review the entire procedure below.

 

NACHI SOP

International Standards of Practice for Performing a General Home Inspection

 

3.5. Cooling

 

I. The inspector shall inspect:

N/A

 

II. The inspector shall describe:

N/A

 

III. The inspector shall report as in need of correction:

B. If the cooling system was deemed inaccessible.

 

IV. The inspector is not required to:

N/A

 

Axium SOP Differences

Axium Requires: The inspector will check the air compressor cabinet to make sure it is level and the coil fins aren’t clogged/damaged. We also want to point out if the cabinet is too low or if the air flow is restricted due to overgrown vegetation or other factors.

 

Tools Needed

The inspector will use the short level to determine if the air compressor cabinet is level.

Procedure

  • While inspecting the air conditioner unit the first thing we do is place the short level on top and check if the unit is level. We also want to make sure the cabinet is not too low and there is no overgrown vegetation around the unit which will restrict air flow.
  • Next you want to walk around the entire unit and check the coil fins for any damage or debris. If there are no defects you will take one picture with the short level on top of the unit to show that we checked to make sure it was level. Also try to get the coil fins in this picture showing that there is no damage or debris present.

         

Common Defects

  • The air compressor cabinet not being level, being too low, or having restricted air flow.
  • The air compressor cabinet having damaged or clogged coil fins.

Common Mistakes

  • Not checking around the entire compressor cabinet for damage or debris in coil fins.
  • Not using the short level to determine if the cabinet is level.

     

Report / Software

IN


  • The air-conditioner compressor housing exterior appeared to be in serviceable condition at the time of the inspection.

NI

  • N/A

NP

  • N/A

RR

  • Coil Fins Clogged: Air flow to the air-conditioner condenser coils was restricted by dirt and/or debris on the exterior which may limit their ability to dissipate heat. The cabinet should be cleaned in order to maintain cooling system efficiency and avoid problems from overheating of the compressor. A qualified contractor should evaluate and repair or replace as necessary and according to current standards.
  • Not Level: The pad supporting the air-conditioner compressor housing was not level. Over time, this may result in damage to the fan bearings and a shortened fan lifespan, or it may result in movement of the compressor housing which can cause leaks in refrigerant lines resulting in expensive service. A qualified contractor should evaluate and repair or replace as necessary and according to current standards.
  • Cabinet Too Low: The air conditioner compressor cabinet was resting below grade. This can lead to damage as a result of water, mud, and debris flowing into the bottom of the cabinet. A qualified contractor should evaluate and repair or replace as necessary and according to current standards.
  • Coil Fins Damaged: There was damage to the air-conditioner condenser coil fins. This limits their ability to dissipate heat. Further damage to the coil fins should be avoided in order to maintain cooling system efficiency and avoid problems from overheating of the compressor. A qualified contractor should evaluate and repair or replace as necessary and according to current standards.
  • Restricted Air Flow: Air flow to the air-conditioner condenser coils was restricted by vegetation or other factors, which may limit their ability to dissipate heat. Anything restricting air flow around the air conditioner should be removed in order to maintain cooling system efficiency and avoid problems from overheating of the compressor.