why is my hvac humming

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Why is My HVAC Unit Making a Loud Humming Noise?Loose wiring: When electrical wires separate by just a little, an electrical arc can be created, which can produce a buzzing sound and the potential for an electrical fire.Circuit breakers: An overloaded circuit breaker can buzz if it is faulty and unable to trip, or your breaker panel can buzz from normal electrical flow. …Condenser fan motor:

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