Your refrigerator is one of the hardest-working appliances in your home. It’s expected to run almost constantly, but that doesn’t mean it should be loud. While some sounds are completely normal, others can be a clear warning sign that something is wrong.

Ignoring strange noises can lead to bigger, more expensive problems down the road. Here is a simple guide to decoding the most common sounds your fridge makes and when it’s time to call in the professionals.

Normal Noises: The Sounds from a Healthy Fridge

A running refrigerator generates several sounds that are completely standard and shouldn’t cause concern:

  1. - Aggieland Appliance RepairHumming or Whirring: This is the constant, low drone. This is the sound of the compressor and the condenser fan running to circulate refrigerant and cool the air. This is the sound of your fridge doing its job.
  2. Clicking: A distinct “click” sound. Often heard when the compressor turns on or off as the cooling cycle starts and stops. It’s the sound of the thermostat or control board engaging the cooling system.
  3. Gurgling or Dripping: Sounds like water trickling. This is the refrigerant moving through the coils or water dripping onto the defrost heater before it evaporates. This is completely normal, especially after a defrost cycle.
  4. Cracking or Popping: Quick, sharp sounds. These sounds are usually just the plastic interior walls expanding or contracting as the temperature changes. This is common when new food is added.

Warning Noises: When It’s Time to Investigate

If your fridge starts making a sound that is loud, rhythmic, or clearly different from the usual humming, it’s time to investigate.

1. Loud, Constant Whirring or Clicking

What it means: This often points to a problem with one of the appliance’s fans.

  • If the noise stops when you open the freezer door: It’s likely the evaporator fan.
  • If the noise continues when the doors are closed: It could be the condenser fan (located near the bottom back of the unit).
  • What to do: First, unplug the unit and check if the fan blades are obstructed by ice or debris. If the noise persists after clearing the area, the fan motor may be failing and needs replacement.

- Aggieland Appliance Repair2. Loud Knocking or Pounding

What it means: This is often a sign of a struggling compressor. The compressor is the heart of the cooling system, and if it’s struggling, your fridge isn’t cooling properly.

  • What to do: This is a major issue. A failing compressor often requires professional diagnosis and replacement. Do not attempt to fix this yourself. Call an experienced technician immediately.

3. Buzzing or Rattling

What it means: This is typically a vibration issue. Something is loose or touching the fridge cabinet. Check the drip pan underneath the unit or items stored on top of the fridge.

  • What to do:
  1. Carefully check the coils and drip pan at the bottom back of the fridge to ensure nothing is loose.
  2. If the sound is still present, the vibration may be coming from the motor mount or a loose fan housing. A technician can quickly tighten or adjust the necessary components.

The Takeaway

- Aggieland Appliance RepairA refrigerator should be heard, but not loudly heard. If a new, alarming noise starts, don’t wait. Early intervention can often save you from needing a costly replacement.

At Aggieland Appliance Repair, we have the experience to quickly decode any strange sound your refrigerator is making and get it running quietly and efficiently again.

Hearing a scary sound? Contact us today for a service call!