Strange AC noises can be alarming, especially during a hot summer in Montgomery, TX. While a bit of noise during start-up is normal, persistent or unusual sounds often point to underlying issues. Learning to recognize these sounds can help you prevent costly breakdowns and extend the life of your system. Here are five of the most common AC noises and what they might be telling you about your cooling system’s condition.
1. Banging or Clanking
If your AC sounds like it’s full of loose bolts, you might be hearing banging or clanking noises. These often signal a loose or broken part inside the compressor. In some cases, it could mean the compressor itself needs to be replaced. If the sound is coming from the indoor air handler, it may be a misaligned blower fan or motor mount. Either way, a professional inspection is needed before further damage occurs.
2. Hissing or Bubbling
Hissing or bubbling usually indicates a refrigerant leak. Bubbling may come from the refrigerant slowly escaping, while hissing tends to suggest the leak is happening in the pressurized lines. This not only reduces cooling performance but can also put added strain on your system. Because refrigerant is a hazardous material, it’s best to call a licensed technician to handle any suspected leaks.
3. Screeching or Squealing
Loud screeching or squealing often comes from a worn fan belt or a motor bearing that’s in need of lubrication or replacement. In older systems with belts, the sound might mean the belt is fraying or has slipped out of place. Newer systems may make similar noises when the motor is overworked or failing. Ignoring this sound could lead to more serious mechanical issues.
4. Clicking or Ticking
Clicking during start-up and shutdown is normal, but constant clicking or ticking can signal an electrical problem. This might involve a malfunctioning thermostat, a failing capacitor, or issues with the system’s control board. Electrical problems should always be addressed quickly to avoid short circuits or further damage.
5. Buzzing or Humming
Buzzing or humming noises may come from a variety of sources, such as loose wiring, debris in the outdoor condenser, or a malfunctioning capacitor. Sometimes, it’s just a loose component vibrating. However, persistent buzzing can also signal electrical issues or compressor problems, both of which require immediate professional attention.
Let the Pros at TCS A/C and Heat Diagnose the Problem
When your AC makes unusual noises, don’t ignore them — they’re your system’s way of telling you something’s wrong. The licensed professionals at TCS A/C and Heat have the tools and experience to quickly diagnose and fix any issue. From minor repairs to full system evaluations, our team in Montgomery TX is ready to help you stay cool and comfortable.
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