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5 Common Central Air Conditioner Problems and How to Fix It

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We all take our central air conditioner for granted. We use it every day automatically, assuming that it’ll give us the cool air we expect. However, once we run into problems, we start to realize just how important they are!

If your central air conditioner is having problems, it can be a real drag on your summertime comfort. Fortunately, many common AC problems are relatively easy to identify and fix. Here are some of the most common central air conditioner problems, along with some tips on how to fix them:

Problem 1. The Air Conditioner Doesn’t Turn On

If your AC won’t turn on, the first thing to check is the thermostat. Make sure it’s set to “cool” and that the temperature is set lower than the current room temperature. If the thermostat is set correctly and the AC still doesn’t turn on, the problem may be with the electrical supply. Check to make sure the AC is plugged in and that the circuit breaker is turned on.

Problem 2. The Air Conditioner Doesn’t Cool the House

If the AC is running but not cooling the house, there are several potential causes. First, check the air filter and replace it if it’s dirty. A dirty air filter can restrict airflow and cause the AC to work harder than necessary. Second, check the evaporator coil and condenser coil to see if they need to be cleaned. Third, check the refrigerant level and, if necessary, add more.

Problem 3. The Air Conditioner Runs Constantly

If the AC runs constantly, but the house never seems to get cool, the problem may be with the thermostat. It could be set to “on” instead of “auto,” which will cause the AC to run even when the house is cool enough. Another possibility is that the thermostat is set too low. Try raising the temperature setting and see if that helps.

Problem 4. The Air Conditioner Makes Strange Noises

If the AC is making strange noises, the problem is likely with the fan or the compressor. A rattling noise may be due to a loose part, while a grinding noise may indicate a problem with the compressor. If you hear any strange noises coming from your AC, turn it off and call a repair technician.

Problem 5. The Air Conditioner Doesn’t Blow Air

If the air conditioner isn’t blowing air, the problem is likely with the fan. The first thing you should do is check to make sure that the fan is turned on. The second thing you should check is the fan blades to see if they’re clean. If they’re not clean, you can clean them with a brush or a vacuum.


While these problems are some issues we may never ever want to face, they can happen sooner or later. Either way, your task is to spot these problems right away and get to work fixing them. The faster you get the system fixed, the faster you’ll get back to enjoying cool air! But of course, if you don’t know how to fix your AC, be sure to hire professionals to come and tackle it for you. They’re well-versed with all things AC and can quickly identify the root cause of the problem and get it addressed effectively.

Climate Experts are a Canadian-owned and operated company offering installation, servicing, and maintenance services for various brands of furnaces and air conditioners. If you are looking for air conditioner repair in Pickering, reach out to us today!

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