Some changes in performance of an air conditioner are relatively minor and are not a cause for an emergency call to your HVAC repair service. On the other hand, there are some signs that should not be ignored.
As with any type of system in the home, the longer it is operated when there is a problem, the more likely the damage will be significant. Often it is a matter of just trying to go as long as possible before getting the HVAC service to fix the issue that result in a problem for the homeowner.
Failing to call in your air conditioning repair service when you notice these issues is more likely to lead to a system failure, no cool air in the home and a much larger repair bill. As the first sign of a problem is often the failure of the system to keep the home cool, this is a good time to start looking for the real issue.
Oil Spray or Drops
Look carefully at the outdoor unit of the air conditioner. If you notice any signs of oil that looks like it is dripping or has sprayed throughout the air conditioner, it is likely a seal or gasket failure. This may include the risk of the refrigerant leaking from the system.
Should the system run dry, the air conditioning repair service will most likely need to replace the compressor. This can be a very costly repair, so getting help quickly and shutting off the unit immediately will be important.
Often, you will need to be at the unit to notice any unusual noises. Most air conditioners today are quiet, and all you hear is the cycling on and off. If there are rattles, clicks, rumbling or whirring types of sounds, particularly as it cycles on, it is most likely a compressor or an electrical relay issue.
Additionally, listen for banging and grinding noises. This can be a sign of the mounts for the compressor giving out, allowing the motor to move around and damage other components. Calling in an air conditioning repair service as soon as possible can help prevent further problems as well as save you money.