Why Is My AC Unit Making a Squealing Noise?
When your AC unit is making a squealing noise, it could be a sign that something is wrong with your HVAC system. Suspicious noises like squealing, banging, and rattling could indicate anything from a minor maintenance issue to more serious mechanical problems.
In this article, you’ll learn about the potential causes of AC unit noises and other related information, including:
- Common causes of squealing in AC units
- Signs that indicate a serious problem
- Risks of ignoring squealing noises
- Steps to identify the issue safely
- The importance of professional repairs
Read on for expert help to get to the bottom of your noisy AC.
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Common Causes of Squealing in AC Units
That squealing sound from your AC unit could indicate that a mechanical or other problem is restricting normal airflow.
Familiar sources of those annoying squeals include:
- Worn-out fan belts: Over time, your AC unit’s fan belts can stretch out, fray, or slip off their perch.
- Blower motor issues: As bearings inside the AC motor wear down, the inner workings start to rub together, and that friction can be pretty noisy.
- Dirty components: Blocked AC vents or dirty filters restrict airflow, which forces the system to work harder. Air pushing through smaller openings can create a high-pitched squeal or whistle.
These issues require immediate attention to prevent further damage to your AC system and its components.
Signs That Indicate a Serious Problem
A squealing AC unit may seem severe, but other warning signs should trigger your concern and an immediate call to a trusted HVAC repair company.
- Squealing noises that get increasingly louder or change from intermittent to constant.
- Noises accompanied by less efficient cooling.
- Unusual odors, such as burning, come from the central AC unit or vents.
- An AC unit shuts down unexpectedly or cycles abnormally through on/off cycles.
Risks of Ignoring Squealing Noises
Dealing with home repairs can feel like a hassle, but ignoring that pesky squealing sound from your AC unit could have costly consequences.
- Worn-out fan belts can snap, damaging the internal workings of your HVAC system.
- A malfunctioning blower motor may overheat.
- Systems losing efficiency can impact sustainability and raise your utility bills.
You must address your noisy AC as quickly as possible to keep repair costs low and preserve your unit whenever possible.
Steps to Identify the Issue Safely
As you take preliminary steps to assess the root problem causing your squealing AC unit, take these steps to identify the issue while prioritizing safety.
- Turn off the AC system before you begin your assessment.
- Check the air filters and replace filters that appear dirty, clogged, or damaged.
- Inspect visible components, such as belts and vent seals, for wear or misalignment.
- Take note of any additional concerns pointing to the root problem, such as weird odors or performance issues.
Save your notes for your professional HVAC technician to help inform them about their diagnostic and repair process.
The Importance of Professional Repairs
Ultimately, the best way to diagnose and treat a squealing air conditioner is to call in an HVAC professional. Experienced and licensed repair technicians know how to correctly identify a problem and recommend whether a repair or total HVAC replacement makes the most sense. It’s the best way to get immediate results while facilitating reliable cooling for years.
Stop the Noise—Call Champion Air for Expert Repairs Today!
If a squealing AC unit negatively impacts your peace and quiet, it may be time to schedule AC repair services. Champion Air has kept area AC systems “running like a Champion” since 1982.
We’re a Lennox Premier Dealer with a coveted Lennox Partner of the Year designation, but our technicians are trained to service all AC brands, new and old. Call today and experience the Champion Air difference.
