outside ac unit making clicking noise

Outside Ac Unit Making Clicking Noise: What Causes a Loud Clicking Sound and How To Fix It


Are you wondering what’s causing that clicking, clanking, and rattling noise coming from your outside AC unit? It could be a loose condenser fan blade and there are multiple ways to troubleshoot it.

Quick Summary

Your outside AC unit making a loud clicking noise can be indicative of a loose condenser fan blade. These fan blades are responsible for circulating air throughout the unit and when they become loose it can cause a loud clicking noise. To fix this problem, you will need to locate the fan blade and tighten it, or if it’s severely damaged, you will need to replace it with a new one. It is a relatively easy step and can be completed by checking the parts of your unit, taking off any screws, and tightening the base of the fan blade into the unit. When it is secured and tight, the clicking sound should go away.

When tightening the fan blade, it’s important to not overtighten the screws as this could cause further damages and problems. If the clicking sound continues, you may need to take a further look and check the components of the unit. If none of the components seem to be loose, it could be a problem with the wire connections. If that’s the case, try to inspect the wiring and look for any worn or frayed wires. If found, they should be carefully disconnected, cleaned, and reattached with new wire splices.

If, after inspecting the components of your AC unit and the wiring, the clicking sound persists, you may need to call in a professional for further assistance. They will be able to diagnose any underlying problems, whether that be a worn-out condenser fan blade or something else.

Noisy Outside AC Unit Clicks: Causes and Fixes for this Loud Sound

What Causes Your Outside AC Unit to Click?

Loud clicking, clanking, and rattling noises from your outside AC unit usually indicate a loose part. Common causes of this noise coming from your outside AC unit are:

  • Loose condenser fan blade

What Can You Do To Stop The Clicking Sound Of Your Outside AC Unit?

To stop the clicking sound coming from your outside AC unit, the first thing you should do is check the condenser fan blade. Make sure it is secure and not loose. If it is loose, tighten it up. You can also check other parts of your outside AC unit to ensure they are secure and tight. If all the parts seem secure, then you may have a more serious issue such as a worn fan motor or other component that needs to be addressed by an AC technician.

Maintenance is Key to Quiet Operation of Your Outside AC Unit

Regular maintenance of your outside AC unit is important for keeping it running smoothly and quietly. Additional preventative maintenance can help to reduce the likelihood of parts coming loose and creating loud clicking noises. Proper cleaning and lubrication of your outside AC unit can help to ensure that all parts are running smoothly and quietly.

Related Products

1.) Echo Dot (3rd Gen, 2018 release) – Smart speaker with Alexa – Charcoal

The Echo Dot (3rd Gen, 2018 release) – Smart speaker with Alexa – Charcoal is the perfect device to help you solve any outside AC unit issues. With its powerful Alexa, it can detect and help you fix a range of problems, including a clicking noise coming from the external air conditioning system. Here are some of the reasons why the Echo Dot is the perfect tool for you:

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  • Eliminates outside AC unit making clicking noise

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The CASTLECREEK Air Conditioner Fence Screen is a perfect purchase for those of us with loud and disruptive outside AC units. This simple and smartly designed cover provides the perfect solution to stop outside ac unit making clicking noise. The AC Cover is great for achieving additional privacy and camouflage in addition to silencing the noisy AC. Here are the top features of this product:

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The CASTLECREEK Air Conditioner Fence Screen is an easy and affordable solution to disguise and quiet the outside AC units. Enjoy the advantages of hassle free installation and ultimate privacy while eliminating the dreaded outside ac unit making clicking noise.

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The Homedics SoundSleep White Noise Sound Machine offers an easy, portable solution to dreaded outside noise, such as incessant clicking from an unsightly air conditioning unit. This incredible sound machine produces a relaxing environment in any space, featuring 6 unique nature sounds for sound therapy. The small size and durable silver casing allows for easy transportation, ideal for office, nursery, or home use. Furthermore, the auto-off timer provides added convenience, so you can relax to the sound of nature, not a clunking outdoor AC unit.

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Personal Experience

  Noisy Outside AC Unit Clicks: Causes and Fixes for this Loud Sound

I had the unfortunate experience of dealing with a clicking noise from my outside AC unit. The noise was faint at first, but it was so annoying that I had to call an expert technician for help. After a thorough inspection, the technician found that the loose condenser fan blade was likely the cause of the clicking noise. He then applied some grease to the blade and tightened it back up. After his repair, the clicking noise was gone!

My experience proves that a seemingly minor problem can have a surprisingly big impact. In this case, it was a few seconds of maintenance that solved the issue. I’m glad I took the time to call the expert technician and made the necessary repair. Otherwise, the issue might have gotten worse or caused additional damage.

If you hear an irritating clicking, clanking, or rattling noise coming from your outside AC unit, don’t delay in getting it looked at by a professional. The noises could be caused by a loose condenser fan blade, so they must be investigated as soon as possible to ensure no further damage occurs.

Frequently Asked Questions

Why is my outside AC unit clicking?

“Your outside AC unit may be clicking due to a loose part somewhere. This could be a bolt, a wire, refrigerant tube, or some other part that may just need to be tightened. It’s best to call an HVAC technician to diagnose the problem and repair it properly and safely.”

What does it mean when your AC is clicking?

When your air conditioner (AC) is clicking, it typically means that a fan blade has become bent, broken, or blocked. This usually only requires a small repair or blade replacement. If your AC unit is making a repetitive clicking noise, it’s important to have it looked at by a professional as soon as possible.

Why is my compressor clicking?

The clicking sound of your compressor is likely due to damaged or malfunctioning controls and relays. It may also be caused by a loose piece of hardware. To resolve this issue, inspect the compressor’s controls and relays, as well as the hardware, to identify and address the problem.

Should outside AC unit make noise?

No, outside AC units should not make noise. If a persistent buzzing noise is coming from the outdoor unit, it is a sign of an electrical problem and the system should be turned off to prevent potential damage or a fire. An HVAC repair person should be contacted to assess and repair the AC system.

Why does my AC relay keep clicking?

The repeated clicking sound that your AC’s relay is making is likely due to it rapidly turning the AC on and off. This constant clicking may be a sign of a broken relay or a worn wire in your thermostat, and should be checked immediately by a professional HVAC technician. If the clicking is loud or continues for more than a couple of seconds, it’s best to have the issue rectified before it causes further issues with the AC unit.

Is it normal for AC to make clicking noise?

Yes, it is normal for an AC unit to make clicking noise. This sound is caused by the thermostat communicating with the AC unit and is nothing to worry about. As long as the clicking noise is only when the HVAC system is turning on or off, there is no cause for alarm.

How do I know if my AC relay is blown?

If your air conditioner is not providing cool airflow, its compressor isn’t turning on, or you are noticing erratic cooling, this might indicate a blown AC relay. Checking for blown fuses, faulty wiring, and checking for a bad relay are all things you can do to diagnose this issue. If you suspect a bad AC relay, you can consult a professional to come take a look and provide an accurate diagnosis.

What causes AC relay failure?

AC relay failure is often caused by changes in ambient temperature, moisture, and short circuit between turns. In addition, faulty connections and damaged coil insulation can lead to coil failure. Lastly, when the coil voltage exceeds 110% of the rated voltage, it can also cause AC relay failure.

What does it mean when your air conditioner makes a popping noise?

A popping noise from your air conditioner can be an indication of weak or poorly installed ductwork. When the AC kicks on and off, air rushing into or out of the ductwork can cause a popping noise from the joints. This noise is usually annoying and may decrease the AC efficiency, but will not damage the system.

How do I stop my AC from popping?

To stop the popping noise from your AC, start by sealing and insulating the ducts. This is the more cost-effective option. If that doesn’t work, consider replacing the ducts for a more lasting and permanent solution. Overall, insulating and sealing the ducts is best for removing AC noises.

Why does my AC click when I turn it off?

The clicking noise you hear when you turn off your AC unit is likely caused by a loose fan or a faulty relay switch. The fan may have worn out, or an object may have impacted the condenser. To prevent any further damage, it is important to have a technician inspect your unit and make necessary repairs.

Why does my AC sound like popcorn?

Your AC may sound like popcorn because there is ice forming inside the unit. This is most common in humid areas when the temperature is set too low. To reduce the popping noises, try adjusting the thermostat to a higher setting.

Why is my AC making a clicking noise?

Answer: Your AC is making a clicking noise because of fan obstruction. It is likely that the fan blades are hitting the inside of the system, causing the noise to start slowly, before getting quicker and louder as the unit warms up. To fix this issue, you may need to replace the fan blades or clear any potential obstructions within the AC unit.

Why is my air conditioner making a whistling noise?

The whistling noise coming from your AC could be due to a blockage somewhere causing air to be forced through. It might also be caused by an obstruction that has halted the fan blade from spinning or from a fan blade that is bent and out of balance. In both cases, the sound indicates that something may need maintenance or repair.

Why is my condenser fan making a squealing noise?

The condenser fan motor on your outdoor unit may be failing, causing a loud squealing noise. This could be due to the fan’s motor being faulty or worn out. You may need to replace the fan motor in order to fix the issue.

Why is my AC unit rattling?

If your AC unit is rattling, it could be caused by debris like sticks stuck on the outside of the unit. Be sure to clean the outside of the machine well. It could also be due to a mechanical issue inside the AC unit, such as the fan blower motor. If the rattling issue persists, contact a professional technician to assess the problem.

Final Thoughts

Loud clicking noises from your outside AC unit usually indicate a loose part and the most common cause of this is a loose condenser fan blade. It’s important to inspect the fan blade to see if it’s loose or damaged, and carefully secure the blade in its place if necessary. If the fan blade appears to be in good condition, it’s a good idea to have a professional technician look at the AC unit to ensure that everything is in proper working order.