Why is my heat pump making a loud noise outside?
Loud outdoor noises from a heat pump can indicate a loose fan blade, debris in the unit, compressor issues, or a failing motor. The noise type helps identify the cause.
A rattling or clanking sound suggests loose panels, debris (leaves, twigs) inside the unit, or a loose fan blade. Inspect and clean the outdoor unit.
A screeching or squealing noise usually indicates a failing fan motor bearing or compressor issue. This requires professional repair.
A humming or buzzing sound could be a faulty contactor relay or electrical issue. Turn off the unit and call a technician.
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