Prevent Costly AC Breakdowns & Keep Your Home Cool with AC Repair Professional

Your air conditioner is designed to keep you comfortable, but unusual noises can signal trouble. While soft operational sounds are normal, certain noises may indicate serious issues that, if ignored, could lead to costly repairs or even total system failure.

From rattling and banging to hissing and squealing, different noises can point to specific issues, and we’re ready to explain some of them so you can avoid major breakdowns and keep your home cool with the help of a Maricopa AC repair professional

Technician performing AC repair on an outdoor air conditioning uni

1. Banging or clanking

If your AC makes loud banging noises, turn it off immediately to prevent further damage. This sound often indicates a loose or broken component. It may be the motor or the blower, but instead of checking that yourself with the AC on, it is better to turn it off and wait for an expert to check it out. 

Many people describe these noises as metallic, and that’s not surprising since it’s usually related to a piece of metal clanging against something else in your HVAC unit. In other words, banging or clanking noises might indicate:

  • Loose parts
  • Broken fan blades
  • Imbalanced motor

2. Hissing or bubbling

If your air conditioner works properly, you should hear a low hum when you turn it on and start to cool or heat your house. But, if that low hum turns into a loud hissing sound, there may be a concerning issue with your HVAC.

Hissing or bubbling sounds often signal a refrigerant leak. Hissing occurs when gaseous refrigerant escapes, while bubbling happens when liquid refrigerant leaks and air gets trapped in the lines.

This buzzing sound could be caused by:

  • Dirty air filter
  • High internal pressure
  • Loose wiring 

3. Screeching or squealing

A high-pitched screeching or squealing sound often indicates broken components or loose wiring. In some cases, you may only need to replace the air filter. However, you should always call a Maricopa AC repair company to get your HVAC unit checked, especially if you already have cleaned and replaced the air filter.

In essence, the most common causes include:

  • Loose belt
  • High pressure
  • Worn compressor bearing

While you could solve this issue by replacing the fan belt or lubricating the motor, you could also need a more difficult repair or even replacement parts. If the damage is extensive, an HVAC technician may recommend that you replace AC units to prevent ongoing issues. That’s why we insist on calling an HVAC professional to diagnose and fix the issue before it worsens.

4. Clicking or Buzzing

It’s completely normal to hear a clicking noise when turning your system on and off. But be aware if you hear the clicking sound often, even after turning your system off.

A persistent clicking or buzzing sound often points to electrical or internal component issues.

Continuous clicking can be a sign of:

  • Electrical issues
  • Twigs or debris in the condenser unit

It’s important to turn the AC off if you hear these sounds. Also, call a professional as soon as possible to receive a proper diagnosis and replace the faulty components. 

5. Rattling or Vibrating

A rattling or vibrating sound may indicate loose components, debris in the unit, or issues with the blower motor or fan. Addressing it early can prevent further damage. Identifying the cause early can prevent further damage.

Rattling or vibrating is usually associated with: 

  • Debris in the condenser unit
  • Loose parts

To fix rattling or vibrating sounds, it’s crucial to get your AC checked by a professional. The technician can tighten loose components, clear out debris, and inspect the motor and fan for any signs of damage. Regular AC maintenance can also help prevent these issues by keeping your AC clean and well-maintained.

Contacting the professionals is always best

Don’t wait for a complete breakdown—contact a Maricopa AC repair contractor at the first sign of trouble. You can count on 911 AC Repair to get started and receive top-quality service!

911 AC Repair is a licensed, bonded, and insured commercial air conditioning company in Maricopa that helps you keep your HVAC unit in perfect condition. We offer affordable air prices, quality work, and excellent customer service. Contact us today to get a FREE quote!

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911 Air Repair

19756 N John Wayne Pkwy STE 106,
Maricopa, AZ 85139

Phone: (480)-360-1234
Email: support@911-ac.com