Air Conditioner Repaires And Maintenance


A central air system uses the same ductwork, fan, and controls as the forced-air furnace, so some of the maintenance requirements are the same.

In-Wall Air Conditioner

A qualified service technician should also:

Inside unit

  • Inspect and clean evaporator coil, drain pan, and condensate drain lines
  • Inspect control box, wiring, and connections for wear or damage
  • Ensure insulation on tubing is intact

Outside unit

  • Inspect for proper refrigerant level
  • Clean dirt, leaves, and debris from inside cabinet
  • Inspect base pan for restricted drain openings-remove obstructions as necessary
  • Inspect coil and cabinet-clean as needed
  • Inspect fan motor and fan blades for wear and damage-on older models lubricate as needed
  • Inspect control box, wiring, and connections for wear or damage
  • Inspect compressor and tubing for damage
  • Ensure penetrations through the house are properly sealed

Additional Recommendation

Additionally, there are many things that home owners can do to keep their air conditioners operating efficiently and safely:

  • As with the furnace, air filters need to be changed per manufacturer’s recommendations. Restricted airflow can cause evaporator coil to freeze up, reducing efficiency and potentially damaging components.
  • The area around the outside unit must be kept free of foliage or anything that can block airflow to the unit.
  • The coils of the outside unit can get clogged from leaves, dust, or other debris, thus reducing efficiency. Periodically spraying with a hose can ensure proper operation.
  • Window units require filters to be cleaned, drain lines to be clear and held away from siding, and proper sealing between the window and the unit.
  • Ductless and high velocity systems also have filters that need cleaning or replacing.
Read More
Types of HVAC Insulations and Their Characteristics

How useful was this post?

Click on a star to rate it!

Average rating / 5. Vote count:

No votes so far! Be the first to rate this post.

We are sorry that this post was not useful for you!

Let us improve this post!

Tell us how we can improve this post?