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5 Strange HVAC Noises You Shouldn’t Ignore

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In the sweltering heat of Arizona, your HVAC system works overtime to keep you cool and comfortable. However, certain noises coming from your system are more than just the sound of cooling — they’re warning signs.

At Champion Air, we know some sounds shouldn’t be ignored, and we’re here to help you decode what your HVAC system is trying to tell you.

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Banging or Clanking

If you’ve ever heard banging or clanking sounds from your HVAC system, it could be a sign of a loose or broken part, such as a connecting rod, piston pin, or crankshaft. These issues, if left unattended, may lead to a catastrophic system breakdown.

Emergency level: High. Banging or clanking sounds signal serious issues that demand immediate attention to prevent further damage.

Immediate inspection and repair are necessary to avoid further damage to the system.

Squealing Noise From Your HVAC System

Squealing noises often indicate belt issues in older systems or malfunctioning fan motors. While not an immediate threat, ignoring these sounds could lead to more severe problems over time.

Emergency level: Moderate. Though not immediately threatening, squealing noises shouldn’t be ignored.

Routine maintenance should address these issues.

Grinding Noises

Grinding sounds usually indicate an issue with the air handler’s motor bearings. Ignoring these sounds could ultimately result in motor failure, and requires immediate professional attention.

Emergency level: High. Grinding noises pose a significant risk to the motor, and it’s important not to ignore them.

Immediate professional repairs are required to address and resolve motor bearing problems.

Crunching Noises

Crunching noises might result from clogged or dirty air filters, causing strain on your HVAC system. While not an immediate emergency, neglecting these sounds could lead to more significant issues over time.

Emergency level: Moderate. The potential for more severe issues requires a proactive approach.

Regular maintenance, including timely filter changes, is essential to prevent further strain on the system.

Buzzing or Hissing Sounds

Buzzing or hissing sounds can indicate electrical problems or refrigerant leaks, both of which pose risks. Electrical issues could compromise safety, while refrigerant leaks harm system efficiency.

Emergency level: High. Both electrical problems and refrigerant leaks require immediate attention.

Immediate inspection is crucial to address and resolve electrical issues or refrigerant leaks promptly.

Need Help?

We’ll handle it. No Excuses!

Schedule HVAC Repair With Champion Air

At Champion Air, we’re more than just a service provider; we’re your HVAC partners. Since 1982, we’ve provided top-quality HVAC solutions in the Phoenix Valley. From Anthem to Chandler, and Scottsdale to Buckeye, our licensed, insured, and background-checked technicians are ready to serve you.

With 24/7 emergency service, same-day solutions, no overtime charges, and discounts, we ensure your comfort is always a priority.

Ready for exceptional HVAC service? Schedule with Champion Air by calling 480-748-4000.

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