What Are the Causes of a Noisy Air Conditioner? 7 Types of Noises & Tips

Unusual Air Conditioning Noises

Do you hear strange noises when your air conditioner is running? There’s likely something wrong with your unit, and if you ignore the warning sounds now, you’ll end up with expensive (and extensive) damages later.

While air conditioning sounds are somewhat normal throughout a cycle, overly noisy units indicate an issue that needs immediate attention. To help you detect the issues with your system, we have created a list of the causes of noisy air conditioners and 7 types of noises to be familiar with. In addition, we have created an outline of what each type of noise means and how to fix the system.

Squealing Sound

Usually, squealing noises originate from your air conditioner when there is high internal pressure. The increase of pressure, which builds up inside the compressor over time, can be dangerous. Most units have a sensor that signals the system to shut down when this happens; unfortunately, those sensors don’t always work. If you hear a squealing sound, turn off your air conditioning system right away and call a certified technician in your area.

Rattling Sound

If a part or screw has come loose inside your air conditioner and is blowing around in the unit, you’ll probably hear a rattling sound. The source of your noisy air conditioner could vary from a fan blade to a cover plate. To find out exactly what is causing the noise in your air conditioner and reduce the risk of further damage, turn off your unit and schedule an appointment with a qualified technician.

Tips & Insights: What Are the Major Signs of AC Compressor Failure?

Banging Sound

Not to be confused with incessant rattling, a banging noise could signal that the indoor blower in your air conditioner is unbalanced. On the other hand, the compressor in the system may be damaged and needs immediate replacement. Banging can also mean larger parts like a crankshaft are loose.

Humming Sound

As mentioned earlier, your AC unit will hum throughout its cycle. However, if your air conditioner becomes increasingly noisy and is vibrating excessively, you may have a broken or failing relay switch. This or humming that originates from issues with your fan motor can lead to costly problems in the future.

Buzzing Sound

A buzzing noise coming from your air conditioner almost always indicates an electrical issue with the condenser fan motor, relay switch, or the system’s wiring. If your air conditioner is noisy, contact a certified contractor to receive help with an electrical problem. Issues with wires can be dangerous and should not be taken lightly. If you notice a buzzing sound coming from your system, turn off your air conditioning and call a professional technician right away.

Gurgling Sound

If you notice gurgling sounds while your AC unit is running, your drain line may be cracked, clogged, or faulty. To ensure absolute safety, seek the experience of a professional, or turn off your unit before inspecting your drain line.

Need Help? Our Team of Certified Technicians Offer Air Conditioning Repair in Freehold, NJ

Clicking Sound

Clicking noises are almost always a sign of major issues. If your air conditioner is producing a clicking sound but won’t turn on, this is an indicator of an electrical issue. However, a clicking air conditioner that starts slow and gets faster is often caused by an obstruction damaging the blower. Lastly, if the clicking sound originates from outside your residence, it’s likely the compressor. To get further information on clicking noises, schedule an appointment with a qualified technician.

When Is It Time To Buy a New AC Unit?

Knowing when to buy a new air conditioner isn’t always easy. It’s a major investment, and you want to select the best system for your needs. If you are faced with a decision but still aren’t sure, here are four major signs that you may need to replace your unit.

High Humidity Levels

Excessive moisture indoors can cause mold, mildew, and other allergen issues in your home. An efficient cooling system removes heat from indoor air and maintains low levels of humidity. If your air conditioner doesn’t remove enough moisture on scorching hot or humid days, your system may be failing.

Rising Energy Bills

With the advancement of technology, air conditioners are becoming increasingly more energy-efficient. However, if your energy bills increase while your per-unit charge remains the same, you may be feeling the effects of your aging, inefficient system.

Your Unit Is Old

The average lifespan for most air conditioners ranges from 10 to 15 years. Keep in mind: this life cycle does vary due to the rate of usage. Nevertheless, frequent repairs or poor cooling ability are the most obvious signs to start searching for a new air conditioner.

Tips & Insights: What Is a Central Air Conditioner SEER Rating?

Your Home Doesn’t Completely Cool

Perhaps the number one sign which indicates you need a new air conditioner is that your current one has simply stopped cooling. If you notice the air from your vents is cool, not ice-cold, you may be on your way to a complete breakdown. While your system will still remove heat, it will fail to keep up when temperatures skyrocket.

Air Conditioning Repair Services

Keep your air conditioner in optimal condition by giving our staff a call by phone at (732) 201-3305 to book an appointment. We offer air conditioning repair services to homes in New Jersey. In addition, we provide other types of air conditioning services such as maintenance and installation. If you have a noisy air conditioner, schedule an appointment with our team of licensed HVAC technicians to receive support.