The Most Common Air Conditioner Problems

Wall With Mold Stain Due To Air Conditioner Leakage

Keeping your home cool on hot days is a priority, and you rely on your air conditioner to work properly and deliver relief; however, AC units can be tricky to deal with at times, and sudden air conditioner issues can lead to days of discomfort.

Statistics show that less than 50 percent of homeowners call an expert HVAC professional to perform routine maintenance of their systems. Waiting until your home is sweltering to make the call about your AC system can lead to short- and long-term issues. Troubleshooting common air conditioning problems is something that homeowners can do in conjunction with regular maintenance from their local, experienced HVAC provider to prevent any major issues.

Here are some answers to the most common air conditioner problems:

Why is my air conditioner not working or turning on?

If your system is completely down, there may be a couple of reasons why, with some simple solutions to try before calling in the professionals:

  • Check the batteries in your thermostat first – a blank screen may be a sign that the batteries need replacing.
  • If the batteries are good, look at both the indoor and outdoor disconnect switches to see if they haven’t been inadvertently turned off.
  • Check your circuit breaker to make sure a line hasn’t been tripped.

Why is my air conditioner not cooling?

If your unit is powered on but is not blowing cool air, it can lead to some uncomfortable temperatures in your home. You may be able to repair the smaller problems, but professionals will need to solve how to fix the air conditioner when it’s not cooling if there are major concerns.

  • You should change your air filter every three months. A dirty air filter could be the culprit as it will prevent more air from flowing through and potentially lead to the freezing of your evaporator coil.
  • Check the exterior of the unit. If your outside unit is dirty or surrounded by debris, this could lead to the AC not working at peak performance.

Why did my air conditioner stop working suddenly?

If you are enjoying cool air in your home and then suddenly find the air conditioner not working all of the sudden, there are a few things a homeowner can check:

  • The first thing to check is whether you have blown a fuse. If so, try tripping the fuse. If this doesn’t work, call for professional help as dealing with electrical issues can be dangerous.
  • The AC unit may have become overheated either due to a buildup of dirt inside or because of a refrigerant leak.
  • Another potential problem could revolve around the wiring in the thermostat, but it’s recommended to call a professional in that instance.

More Air Conditioner Troubleshooting Tips

AC units are complex machines that can break down for a variety of reasons. Here’s a refresher on the most common problems:

  • Dirty air filters: Replace every three months.
  • Refrigerant leaks: This will lead to your AC blowing warm air.
  • Frozen evaporator coil: Blocked or dirty vents can lead to this issue.
  • Blocked condensate line: This could lead to water leaks and a musty smell.
  • Condenser fan problems: Keep your outside unit clear of debris to help prevent these issues.
  • Rattling noises: This can indicate a problem with motor assembly.

The key to making sure your air conditioning runs smoothly and efficiently is regular maintenance from an experienced and fair HVAC provider. A yearly maintenance plan will give the expert a chance to look at your unit, determine any potential problems and make quick fixes so that you can have a worry-free experience when it’s time to turn on the air conditioning. Do as much as you can with our air conditioner troubleshooting guide, but connect with an expert for anything you’re not comfortable fixing on your own.

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