A noisy air conditioner can be frustrating, especially when the fan inside AC starts making unusual sounds. There may be a few things you can do to fix this issue before calling a professional for AC repair. In this blog, we’ll explore five common reasons your fan inside AC could be noisy and what you can do to resolve the problem.
1. Fan Inside AC Unit Has Loose or Damaged Blades
One of the most common causes of noise is loose or damaged fan blades. Over time, blades can become misaligned, causing them to hit other components inside the unit. This often results in a loud clanking or banging sound.
How to Fix It
- Turn off your AC unit and inspect the blades.
- Tighten any loose screws securing the fan blades.
- If you notice visible damage, schedule air conditioning repair with a professional.
2. Fan Inside AC Unit Has Worn-Out Motor Bearings
If you hear a high-pitched squealing or grinding noise, this could mean the motor bearings that allow your fan to spin smoothly are wearing out. Bearings that spin smoothly reduce friction and prevent overheating of your AC unit.
Solution
- Lubricate the bearings if your AC model allows it.
- If lubrication doesn’t help, you may need professional AC repair to replace the bearings.
3. Fan Inside AC Unit Has Loose or Faulty Belt
Some older AC models use belts to drive the fan. A loose or frayed belt can produce a squeaking or squealing noise. If the belt is too worn, it may even break, stopping the fan from working altogether.
What You Can Do
- Check if your AC unit uses a belt-driven system.
- Tighten or replace the belt as needed.
- Call for air conditioning repair if the problem persists.
4. Fan Inside AC Unit Has Obstructions in the Fan Housing
Dirt, debris, or even small objects can get stuck in the fan housing. When the fan spins, these obstructions can create rattling or buzzing sounds. This issue is more common in outdoor units, but it can also affect indoor systems.
Fixing the Issue
- Turn off the AC and inspect the fan housing for debris.
- Remove any visible obstructions carefully.
- If the noise continues, contact Summers Comfort Heating & Air in Denham Springs, LA.
5. Fan Inside AC Unit Has Refrigerant Leaks Causing Compressor Noise
While not directly related to the fan, a refrigerant leak can cause the compressor to make a hissing or bubbling noise. This can lead to the fan working harder, resulting in unusual sounds.
How to Address It
- Check for ice buildup on the AC coils, which can indicate a refrigerant issue.
- Contact an HVAC expert in Denham Springs, LA, for professional AC repair.
Professional Help to Fix the Fan Inside AC Unit
If troubleshooting doesn’t resolve the issue, it’s best to schedule an appointment for air conditioning repair with a qualified technician. At Summers Comfort Heating & Air, we specialize in diagnosing and fixing AC problems, ensuring your home stays comfortable year-round.
Preventing Future AC Noises
To prevent your fan inside AC from making noise in the future, consider the following maintenance tips:
- Schedule regular tune-ups.
- Clean or replace air filters monthly.
- Keep the area around the outdoor unit clear of debris.
FOR YOU: The Ultimate 10-Step Air Conditioning Unit Maintenance Checklist for Peak Performance
Summary
A noisy fan inside AC can be a sign of loose blades, worn motor bearings, faulty belts, or debris in the fan housing. In some cases, refrigerant leaks can also contribute to unusual AC sounds. Regular maintenance and timely air conditioning repair can prevent these issues. If you’re dealing with AC issues, don’t wait for the problem to get worse. Contact Summers Comfort Heating & Air today for expert AC repair in Denham Springs, LA!
