Causes of a Constantly Running Air Conditioner

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Causes of a Constantly Running Air Conditioner

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Even though you might always want your home to be cool, you don’t want your AC to run all the time. If you feel like your air conditioner is running a constant marathon, you could have a problem with your Hudson heating and cooling system. Learn More about the causes for this and what it means for your HVAC system.

Is It Really Always Running?

Before you begin troubleshooting, think about this question. Is your air conditioner actually running all the time, or does it only seem that way? If you’re not sure the answer to that question, take time to think about your AC and the weather.

When is the last time you noticed your air conditioner turn off? If you can’t remember, start observing and take notes. Record how many times your air conditioner kicks on and off in one day. It shouldn’t always be on, nor should it cycle on and off every few minutes.

Paying attention to your Hudson heating & cooling can make all the difference. If you notice it working too hard, you should call your HVAC technician for a repair. They may be able to prevent a major malfunction.

The Probable Causes

All of the following could be why your air conditioner is running all the time. However, you shouldn’t try to diagnose or repair your system alone. Your air conditioner is a complex piece of machinery and isn’t easy to fix.

Dirty Air Filter

Every 30 to 90 days, you should change out your air filters. If you wait too long to change them or don’t change them at all, your system will suffer. The particles in the filter will slow the airflow and make your system incessantly run. 

Once you get into a routine of changing your air conditioner filter, it’s easy to stay on top of it. You learn the optimal time frame for changing out the filter and set reminders to keep you from forgetting. As a reward, your AC lasts longer and is less likely to break down.

Debris on the Coils

Evaporator and condenser coils are necessary for your system to work well. If the coils have dirt or grime on them, they will prevent your AC from doing its job. A poorly maintained air conditioner is likely to have dirty coils and may run constantly in an attempt to cool your home.

Dirty evaporator coils could result in a clog in your drain line, which may result in complete system failure. However, don’t try to clean the coils on your own. You may damage the coils and require a more costly repair. The best thing for you to do is to prevent dirty coils. You may accomplish this by keeping debris away from your condenser unit and receiving biannual or annual maintenance on your air conditioner.

High Heat or Humidity

There’s a chance your air conditioner isn’t broken, and that the weather is to blame for your running AC. If the heat or humidity is too much for your air conditioner to handle, it will always run. The only way for it to keep your home comfortable is to replace the warm air with cooled air constantly. 

On a very hot day, give your AC a break and don’t call the HVAC technician right away. But, when the temperature gets back into the normal range, make sure your system stops running all day. 

At times, humidity is a constant problem. Your home may be humid even when it’s not too humid outside. In this case, you can install a dehumidifier or vents to allow humidity to escape your home. Without taking action, you can be sure your AC will always struggle with the humidity.

Faulty Components

The components of your AC might look durable, but they’re delicate and need servicing. If certain components are dirty or broken, they may cause your system to work all day. 

One of those components is the blower motor. In some cases, it might only need a fan speed adjustment. Or, it could need a full replacement. With regular maintenance, you may extend the life of the blower motor. With that said, be mindful that your air conditioner won’t last forever. 

If you seem to have multiple faulty components or are tired of needing frequent AC repairs, you may need to entertain the idea of getting a replacement air conditioner. The typical HVAC system only lasts about 15 years, so it might be time for a replacement. 

Wrong Size HVAC System

If your HVAC installer wasn’t qualified or well-trained, they might have installed a system that’s either too small or large for your home. And this could result in serious issues for your AC.

When picking an AC of an appropriate size, your technician should consider the size of your home, insulation, and ventilation. If they fail to do so and choose an air conditioner that’s too small, it will run frequently. An AC that’s too large comes with other issues.

You probably trust your HVAC technician to get the job done, but that trust could be misplaced. Over half of all HVAC systems aren’t installed properly, and the consequences are significant. You might have high energy bills, need frequent repairs, or experience discomfort in your home. 

To prevent this from occurring, only work with an experienced HVAC technician. Do extensive research before you get an HVAC installation. By choosing someone with great reviews and a history of satisfied customers, you improve your chances of a successful installation.


If your AC is still running all the time, you need professional help. Here at Stellar Techs, we can assess the situation and figure out how to fix it. You can trust our HVAC technicians to get the job done and restore your cool air.

Even if your AC doesn’t run all the time, you need regular maintenance to ensure it continues to work. Our Hudson heating and cooling specialists are more than qualified to take on your maintenance needs. Give us a call today and let us help you.