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Air Conditioning Unit Noises: Find Out What They Mean

Savvy consumers prefer a quieter air conditioning unit not only to have a good night’s sleep, but also to have a more efficient cooling system. The noise levels of these air conditioners are below 55 decibels. So if your unit has been making a sound lately, it means your AC is not in working order. It’s a sign that your unit needs immediate repair or upgrade. The strange noises coming from your air conditioner is an indicator of a serious problem, especially for older units. You cannot afford to ignore a minor problem as it can turn into a costly repair. Worse, you may end up replacing your unit if the problem cannot be fixed immediately. It is important that you call an AC repair technician to determine the source of the problem. Find out if your HVAC system is making one of these following noises:

1. A Unit With A Buzzing Noise

The buzzing noise that you hear from your outside HVAC unit could mean several things. Possibly loose parts, debris in your indoor or outdoor unit, loose fan blades, dirty condenser coil, worn air filter, leaky refrigerant, and loose outdoor fan motor. You will need to have your air conditioning unit checked by a qualified technician to determine what causes the buzzing noise.

2. Banging From The AC Unit

Banging noises are also a cause for alarm because they are indicators that some parts of your HVAC unit can be broken or loose. It might have to do with a loose crankshaft, connecting rod, or piston pin. These components are located in the air conditioning compressor. If you have an unbalanced indoor blower, you can also expect your unit to make banging noises. It may also be a sign that you need to replace your compressor.

3. Clicking In Your Air Conditioning Unit

You should also watch out if your unit makes a clicking sound. Although the clicking of electrical components is normal when starting up or shutting down your unit, ongoing clicking means your thermostat might be defective or failing. Your unit is composed of various electrical parts. You have to pay attention to these electrical issues as they might be something serious. Prevent bigger issues by calling an HVAC technician to inspect your unit.

4. A Humming Air Conditioning Unit

Air conditioners also produce high-pitched screaming or whistling sounds. If this happens, you have to shut the unit off and schedule a repair with an HVAC technician. A refrigerant leak is the most likely cause of the problem. Leaks can cause serious damage to your air conditioning unit. The screaming is an indicator that your compressor has high internal pressure. This problem can pose a serious threat. If your unit has turned off on its own, you should keep calm because this is a good thing. It only means that your sensor is still doing a good job of protecting you from danger.

5. AC Unit That Squeals

When your indoor blower and outdoor fan motors are going bad, it will make fan or blower noises including rattles, squeals, and squeaks. When the problem goes unchecked, the unit will begin to malfunction. There are units that may produce this sound upon start-up. You will be able to determine whether the sound seems normal or is an indicator of a bigger problem.

6. Rattling Inside The AC Unit

Your HVAC unit no matter how durable is not exempted from deterioration. There will come a time when it will make a rattling noise. The noise indicates that your unit has loose electrical components or a damaged compressor. Aging can cause your air conditioner to become less efficient. Upon hearing the noise, start checking your unit for any loose bolts or screws. You will also need to clean the indoor air filter and condenser coils.

When your air conditioner starts to fail, you will notice a sudden rise in temperature. Any problem with your HVAC unit must be addressed immediately to prevent costly repairs. You need a reliable technician to help you restore your unit’s optimum performance without breaking your budget.