Yes, you will typically hear a low, muffled motor hum and the sound of rushing water through the discharge pipe when your sump pump operates normally. However, if the pump makes loud grinding, squealing, banging, or roaring noises, it indicates a mechanical problem such as worn motor bearings, debris trapped in the impeller, or a slamming check valve. Verification: Listen to the pump during a manual test cycle to ensure the motor hums smoothly without harsh friction sounds.
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