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Proudly Serving the Conway Area

Proudly Serving the Conway Area


Dewees HVAC Blog

5 Noises That You Don’t Want to Hear: AC Edition

The whirring hum of your air conditioner is a familiar sound during the hot summer months. It’s a comforting reminder that cool air is on its way. But what happens when that familiar hum morphs into a symphony of clangs, screeches, or hisses? These unexpected noises might be a signal that you need HVAC repair in Little Rock.

Ignoring these unusual sounds can lead to more significant problems down the road, translating to higher repair costs, decreased efficiency, and even complete system failure. Here are 5 AC noises you don’t want to hear, and why they require professional attention.

1. Loud Banging or Clanking: This sound often indicates a loose component within your AC system. The culprit could be a broken fan blade, a dislodged compressor mount, or even debris caught inside the unit. Left unaddressed, banging and clanking can damage internal components and lead to costly repairs.

2. Screeching or Squealing: This high-pitched screech typically points to an issue with the fan belt or motor bearings. The belt might be worn or loose, or the bearings could be failing due to lack of lubrication. Ignoring this sound can lead to the belt snapping or the motor seizing, potentially causing significant damage.

3. Hissing or Bubbling: This sound can be a telltale sign of a refrigerant leak. Refrigerant is the lifeblood of your AC system, absorbing heat indoors and releasing it outdoors. A hissing sound near the outdoor unit often indicates escaping refrigerant gas. Refrigerant leaks not only impact cooling performance but can also be harmful if inhaled in large quantities. Professional help is crucial to locate and repair the leak safely.

4. Rattling: While a slight rattle might not be a cause for immediate concern, persistent rattling can indicate several potential issues. Loose screws or panels within the unit, a damaged fan blade, or even a failing compressor can all cause rattling noises. A qualified technician can diagnose the source of the rattle and ensure your AC system is operating safely and efficiently.

5. Excessive Humming: While a low hum is a normal sound during AC operation, a sudden increase in the humming noise can indicate several problems. It could signify a failing compressor struggling to function, or restricted airflow due to clogged air filters or dirty condenser coils. A qualified technician can diagnose the cause of the excessive humming and ensure your AC system is operating at optimal efficiency.

Why Professional Diagnosis and Repair Matter

Ignoring unusual AC noises can have serious consequences:

  • Increased Damage: A minor issue left unaddressed can snowball into a much bigger and more expensive repair later.
  • Decreased Efficiency: A malfunctioning AC system will work harder to achieve the desired temperature, leading to higher energy bills.
  • Safety Hazards: Refrigerant leaks and electrical issues can pose safety risks if not handled by a qualified professional.
  • Warranty Issues: Attempting DIY repairs on your AC unit could void the manufacturer’s warranty.

For fast diagnosis and reliable repairs, contact the experts at Dewees HVAC.

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