Why Is My AC Clicking? Troubleshoot The Problem Now

Your ac might be making a clicking noise due to faulty parts or a malfunctioning thermostat. This issue needs to be addressed by a professional technician to prevent further damage and ensure the smooth functioning of your ac.

An ac is an essential appliance that keeps us cool and comfortable during hot and humid weather. However, hearing clicking noises from your ac can be a sign of a potential problem. These noises could indicate various issues such as a faulty capacitor, a malfunctioning thermostat, or a damaged compressor.

Ignoring these sounds can result in a complete breakdown of your system and lead to expensive repairs. Therefore, it is crucial to address the problem by contacting a professional hvac technician who can diagnose and fix the issue. In this article, we will discuss the possible causes of ac clicking noises and provide some basic troubleshooting tips.

Common Causes Of Clicking In Ac Units

No one wants to hear clicking sounds coming from their air conditioning unit, especially on a hot summer day. These sounds can be a sign of underlying issues that could escalate if not addressed immediately. In this section, we will discuss the most common causes of clicking in ac units and the signs that indicate a problem.

Malfunctioning Capacitor Or Electrical Relay

If the clicking is coming from the outdoor unit, a faulty capacitor or electrical relay could be the culprit. The capacitor is responsible for starting the ac’s compressor, while the relay helps the unit switch between different modes. Signs of a malfunctioning capacitor or electrical relay include:

  • The ac unit won’t turn on or starts, then abruptly turns off
  • The ac unit hums or makes other unusual noises
  • The ac unit shuts down without completing a cycle.
  • The ac unit struggles to start

Clogged Air Filter

A clogged air filter can also produce clicking sounds in your ac unit. Air filters trap dirt, dust, and other debris and prevent them from circulating around your home. However, they become clogged over time, and this can affect the unit’s performance.

Signs of a clogged air filter include:

  • The air conditioner takes longer to cool the room
  • The air conditioner emits stale or musty odours
  • The air conditioner struggles to circulate air
  • The air conditioner produces a weak airflow

Low Refrigerant Levels

Refrigerant is a liquid that flows through your ac unit’s coils and removes heat from the air. However, low refrigerant levels can cause the ac unit to click. Signs of low refrigerant levels are:

  • The ac unit takes longer to cool the air
  • The ac unit produces warm air instead of cool air
  • The ac unit struggles to reach the set temperature
  • The ac unit produces hissing or bubbling noises

Damaged Thermostat

A damaged thermostat can also cause clicking sounds in your ac unit. The thermostat regulates the ac’s temperature based on your home’s temperature set point. If it becomes faulty, it can send the wrong signals to the ac unit, causing it to malfunction.

Related Post:  Uncovering the Mystery: Where Is the Fuse in a Window Air Conditioner?

Signs of a faulty thermostat include:

  • The ac unit turns on and off frequently
  • The ac unit produces uneven cooling
  • The ac unit fails to maintain a stable temperature
  • The ac unit turns off entirely

Now that you know the common causes of clicking in ac units, you can identify issues early and call a professional to fix them. Remember to schedule regular maintenance to prevent future problems.

Troubleshooting Your Ac Unit

If your ac unit is making a clicking noise, it can be a sign of several issues that you can troubleshoot at home. However, before getting started, the first and foremost safety precaution you should take is to shut off the power to your ac unit.

Here’s how you can troubleshoot your ac unit:

Check Your Air Filter

A dirty air filter can cause your ac unit to make a clicking noise. To check your air filter:

  • Locate the air filter in your ac unit and remove it.
  • Inspect the filter for dirt, dust, and debris.
  • If the filter appears dirty, clean or replace it with a new one.

Inspect Your Thermostat

Sometimes, a faulty thermostat can cause your ac unit to start clicking. To ensure your thermostat is working correctly:

  • Check if the thermostat is set to the “cool” mode with a temperature setting below the room temperature.
  • Ensure the display screen is working correctly, indicating that the battery is not dead.
  • If the thermostat doesn’t work correctly, replace the battery or the entire unit altogether.

Examine Capacitors

Capacitors are small cylindrical components that store and release electrical energy in your ac unit. To check them:

  • Turn off the power to your ac unit.
  • Locate the capacitors in your ac unit.
  • Inspect the capacitors for any visible signs of physical damage, such as cracks or bulging tops.
  • If the capacitor looks physically damaged, replace it with a new one.

Check Electrical-Relays

The electrical relays in your ac unit are responsible for powering the compressor and fan motor. To examine them:

  • Turn off the power to your ac unit.
  • Locate the relays in your ac unit.
  • Inspect them for any visual signs of damage or overheating.
  • If the relays appear damaged or overheated, replace them.

It’s essential to note that when dealing with electrical components, safety is crucial, and you should take every precaution necessary. Make sure your hands are dry and wear protective clothing and gloves. If you feel unsure about handling electrical components, it’s best to call a professional.

When To Call A Professional

If your ac is making a clicking noise, it could be an indication of a more significant problem. While some minor issues can be fixed without professional help, certain complications require experienced hands. In this section, we’ll explain when to call an expert in, rather than attempting to repair the unit yourself.

Related Post:  Unveiling the Truth: Does Walmart Recharge AC?

When the first signs of malfunction appear, it can be tempting to open up the unit and attempt to fix it yourself. However, some issues are too dangerous or complex for someone without adequate knowledge and experience to handle. Here are some key points to keep in mind:

  • Electrical problems: Any issues with electricity can be dangerous and should only be dealt with by a professional.
  • Freon leak: If you hear a clicking sound accompanied by a hissing sound, there may be a refrigerant leak, and only a trained professional can replace the refrigerant safely.
  • Faulty compressor: A clicking noise can signal a failed compressor, and repairing or replacing it should only be handled by a certified technician.
  • Broken fan motor: Trying to replace a fan motor yourself can lead to electrocution or further damage to the ac.
  • Circuit board issues: Any problems with the electrical components require an experienced technician to fix.

It’s crucial to recognize that messing with intricate systems can often make things worse, leading to more costs and time spent on repairs. As such, it’s vital to understand the limitations of our own skillset and know when it’s time to call in a trained and certified professional.

Remember, safety always comes first, and allowing an expert to handle any significant defect in a timely and cost-effective way is always the best option.

Preventing Clicking From Reoccurring

Are you hearing strange clicking noises coming from your ac unit? This is a common issue that many homeowners experience, and it can be frustrating to deal with. Fortunately, there are steps you can take to prevent the clicking from reoccurring.

Regular Maintenance Is Key

If you want to keep your ac unit running smoothly and prevent clicking noises, you must perform regular maintenance. This includes cleaning or replacing filters, checking the thermostat settings, and scheduling professional tune-ups. By keeping up with maintenance, you can address issues before they turn into bigger problems, saving you time and money in the long run.

Professional Troubleshooting Is Recommended

While it may be tempting to troubleshoot the unit on your own when you hear clicking, this may not always solve the problem. In many cases, an experienced technician may be needed to diagnose and fix the issue. They have the experience and knowledge to identify the root cause of the clicking, and they can take action to prevent it from happening again.

Tips And Tricks For Prevention

In addition to regular maintenance and professional help, there are some tips and tricks you can use to prevent clicking from happening again. Here are a few useful strategies:

  • Keep the area around your ac unit free from debris
  • Ensure proper airflow by not obstructing vents or air returns
  • Install sound-absorbing mats or blankets around the unit
  • Lubricate the ac unit’s fan motor regularly
  • Don’t push your ac unit too hard by setting the thermostat too low or running it for extended periods
Related Post:  Unveiling the Mystery: Df Meaning on Mini Split Explained

By following these prevention tips and tricks, you can minimize the chance of experiencing clicking noises from your ac unit in the future. Remember, taking good care of your unit can extend its lifespan and help it run smoothly.

Frequently Asked Questions Of Why Is My Ac Making A Clicking Noise

Why Is My Ac Making A Clicking Noise?

Your ac may make a clicking noise due to a failing compressor, a faulty thermostat, dirty condenser coils, a problem with electrical wiring, or debris in your unit. It’s important to have an hvac technician diagnose the issue for proper repair.

Is It Safe To Ignore A Clicking Ac?

No. Ignoring a clicking ac can lead to more significant and costly repairs if left unattended. It can also result in poor air quality, uncomfortable temperatures, and increased energy bills.

Can I Fix A Clicking Ac On My Own?

It’s not recommended. Fixing a clicking ac requires technical expertise and specific knowledge. Attempting a DIY fix may lead to further damage, voided warranties, and potential safety hazards.

How Long Does It Take To Repair A Clicking Ac?

The length of time it takes to repair a clicking ac depends on the root cause of the issue. It can take anywhere from a few hours to a full day, depending on the complexity of the repair.

Should I Replace My Ac If It Has Been Clicking For A Long Time?

Yes. If your ac has been clicking for an extended period, it’s most likely a sign that there are significant problems, and repair or replacement is necessary. Continuing to use it can result in further damage, increased energy bills, and decreased air quality.


As we have seen, a clicking noise in your ac unit is a cause for concern and should not be taken lightly. While some causes of this problem may be easily resolved with DIY solutions, other issues require professional assistance.

Regular maintenance can go a long way in preventing these issues. Neglecting proper upkeep of your ac unit can result in unnecessary expenses and discomfort in the future. It is important to remember that the best way to avoid such problems is to consult with an experienced professional who can offer tailored solutions for your specific needs.

To ensure the longevity and efficiency of your ac unit, it is always important to stay aware of the signs and symptoms of problems and take prompt action to address them. By doing so, you can save yourself time, money, and unnecessary stress in the long run.

Similar Posts