Your loud air conditioner might be a sign that you have trouble with your fan motor. Your air conditioner’s outside unit houses the compressor, fan, and condenser coils. Heat is released from the air and transferred out of your home through these components. If the outdoor fan doesn’t work right, heat can’t transfer. Besides not cooling your home properly, a broken fan can overheat your air conditioner’s compressor. A hot compressor can trigger your air conditioner’s safety controls, turning it off. Overheating can also damage the compressor itself, requiring home AC repair or compressor replacement.