air conditioning problemsThe most common problems with air conditioning systems stem from faulty installation, poor service procedures, and inadequate maintenance.

The only way to make sure your system avoids common problems is by scheduling routine maintenance with a trusted professional. If you are having a technician come to your home or business to check out your system, make sure to ask about these common problems.

What to Have Your HVAC Technician Check for During Routine Maintenance:

The following are components of your air conditioning system that should be checked every time you schedule an A/C maintenance call.


  • Room air conditioners feature a thermostat sensor, located behind the control panel, which measures the temperature of air coming into the evaporative coil. If the sensor is knocked out of position, the air conditioner could cycle constantly or behave erratically.

Refrigerant Leaks

  • If your air conditioner is low on refrigerant, either it was undercharged at installation or it leaks. If it leaks, simply adding refrigerant is not a solution. A trained technician should fix any leak, test the repair, and then charge the system with the correct amount of refrigerant.

Filter and Coils

  • If you allow filters and air conditioning coils to become dirty, the air conditioner will not work properly, and the compressor or fans are likely to fail prematurely because dirt reduces air flow and requires the system to work twice as hard.

Electronic Control

  • The compressor and fan controls can wear out, especially when the air conditioner turns on and off frequently, as is common when a system is oversized. Because corrosion of wire and terminals is also a problem in many systems, electrical connections and contacts should be checked during a professional service call.

If your system doesn’t normally receive routine maintenance and you start noticing some issues, there may still be some quick fixes for you. Here are some common air conditioning problems and their solutions.

Common Air Conditioning Problems

Air conditioner manufacturers generally make high quality products built to withstand the elements, however, if your air conditioner fails, begin by checking any fuses or circuit breakers. Let the unit cool down for about five minutes before resetting any breakers. If a central air conditioner’s compressor stops on a hot day, the high pressure limit switch may have tripped; reset it by pushing the button, located in the compressor’s access panel. If this does not fix your problem, one of the following might.

My Air Conditioner Is Leaking

There are a few reasons that an air conditioning system might start leaking. The most common are due to humidity or an improperly mounted system. When it’s humid outside, the condensate drain could be clogged or draining improperly. Room air conditioners may not drain properly if not mounted level.

For a full list of why your air conditioner may be leaking, check out How to Repair an Air Conditioner Leak.

My Air Conditioner Stopped Working

If your condenser isn’t running, check the power to make sure the unit is plugged in. Then make sure to check for a blown fuse or tripped circuit breaker. Restore the power and see if it starts.

Another simple fix could be that the thermostat isn’t set properly. Lower the thermostat by five degrees. Wait five minutes to see if the system kicks on.

If the system does not turn on you may have a faulty motor or compressor. You’ll need to get a professional to help fix the problem.

My Air Conditioner Is Making a Strange Noise

Noisy air conditioners can be a nuisance, but you might think that it’s just the normal part of how your system works. However, you should never ignore a strange sound, as it usually signals a problem with your unit.

These issues may be minimal and can be fixed quickly; to learn more about the different noises and what they mean, check out HVAC Noises You Should Never Ignore.

My Air Conditioner Is Blowing Warm Air

If you air conditioning unit isn’t cooling your house even though it’s running, you should still check the thermostat and make sure it is on the proper setting. Next, take a look at the condenser. Is it dirty or blocked? If so remove the blockage and clean the area. The condenser can become blocked by tall weeds, grass or other airborne debris.

My Air Conditioner Isn’t Cold Enough

If the air conditioning unit doesn’t seem to be cooling your home adequately, start by lowering the thermostat by five degrees. If this does not fix the problem you may have a dirty evaporator. Carefully clean the evaporator and let it run for a few hours.

If you wish to have this cleaned by a professional, get a free estimate for evaporator cleaning at (844) 769-5995, or by filling out the form to the right.

If the problem pursues, it may mean you have an improperly sized air conditioner.

My Air Conditioner Keeps Turning On and Off

Another problem could be that the condenser unit or evaporator is dirty or blocked. Most of the time, giving the entire unit a good cleaning and removing any obstructions will eliminate the problem.

The best way to combat these issues is by having routine maintenance scheduled on your system before warm seasons. This allows the technician to look for any problems with the system and get it ready to last all summer.

Get Free Estimates on Air Conditioning Maintenance

If you have noticed some strange behavior with your air conditioner, it may be time to have it looked at by a professional. Pro HVAC Service provides you with free quotes from local service providers. We partner with reliable and highly trained HVAC repair companies to make sure you are getting the best possible service.

To get a free estimate, just give us a call at (844) 769-5995, or simply fill out the form to the right. Within minutes you will receive a call from one of our sales representatives with a free estimate for your HVAC service.