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How To Replace Fridge Thermostat

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In today’s world, refrigerators are a crucial part of our daily life. They keep our food fresh, our drinks cold, and our leftovers safe for future consumption. But what happens when your fridge starts to act up? One common issue is the fridge thermostat malfunctioning. If you’re facing this problem, don’t worry. This comprehensive guide will help you understand how to replace a fridge thermostat step by step.


To replace a fridge thermostat, first, gather necessary tools including screwdrivers, pliers, work gloves, and a replacement thermostat. Disconnect the power supply, locate and remove the old thermostat, making sure to document the wiring connections. Install the new thermostat, reconnect the wires, and reassemble the control housing. Test the new thermostat by setting the recommended temperature and monitor it using a thermometer.

What is a Fridge Thermostat and Why is it Important?

The thermostat is an integral component of your refrigerator. It’s the part that controls the temperature inside your fridge, ensuring that it remains at the optimal level for food safety. When the thermostat malfunctions, it can lead to food spoilage, increased energy consumption, and even potential health risks.

Tools Required for Replacing a Fridge Thermostat

Before you start the process, gather the necessary tools. You will need:

  • A flathead and crosshead screwdriver
  • Needle-nose pliers
  • Work gloves
  • A replacement thermostat
  • A device to take photos (for documenting the wiring connections)

Remember, safety comes first. Always disconnect the power supply before starting any repairs.

Steps to Remove the Old Fridge Thermostat

  1. Unplug the fridge: This is a crucial safety step that should never be overlooked.
  2. Locate the thermostat: Refer to your refrigerator’s owner manual for the exact location.
  3. Remove the control knob: This is usually attached to the thermostat shaft.
  4. Detach the control housing: Undo any nuts holding the shaft in place and remove any screws securing the control panel housing to the fridge.
  5. Release the temperature control thermostat: This is usually held in place by brackets.
  6. Disconnect the wires: Take a digital picture or tag the wires with numbered masking tape for easy reconnection later.
  7. Remove the capillary: Be gentle to avoid causing any damage.

Steps to Install the New Fridge Thermostat

  1. Connect the wires: Use your photo or tags as a guide to reconnect the wires to the new thermostat.
  2. Install the new thermostat: Place it in the control housing and secure it with the brackets.
  3. Reassemble the control housing: Attach it back to the fridge wall and replace the control knob.

Testing the New Thermostat

After installation, it’s important to test the new thermostat to ensure it’s working properly. Set the recommended temperature and monitor it using a thermometer. If the temperatures are within the recommended range, your thermostat is functioning correctly. If not, you may need to calibrate the thermostat.

Where to Buy a Reliable Replacement Thermostat?

You can find a reliable replacement thermostat from various online and physical stores such as Amazon, eBay, Home Depot, and PartSelect. Always check the compatibility with your fridge model before purchasing.

Common Challenges and Solutions While Replacing a Fridge Thermostat

You might face challenges like locating the thermostat or removing the control housing. Consult the fridge’s user manual for specific instructions. If the fridge is not cold after replacing the thermostat, it might be stuck in a defrost cycle. In such cases, consult a professional technician for further assistance.

In conclusion, replacing a fridge thermostat is a manageable task if you follow the correct steps and take necessary precautions. It not only saves you money but also extends the lifespan of your refrigerator.

Frequently Asked Questions

What if I can’t find a replacement thermostat for my specific fridge model?

If you can’t find a direct replacement for your fridge’s thermostat, you can opt for a universal refrigerator thermostat. These are designed to work with a variety of fridge models. However, it’s crucial to ensure the specifications match your fridge’s requirements.

How do I know if my fridge thermostat is actually the problem?

If your fridge isn’t maintaining the right temperature, it could be a sign of a faulty thermostat. Other signs include the fridge or freezer running constantly or not running at all despite being plugged in. To confirm, you can use a multimeter to test the thermostat for continuity, a continuous electrical path present in the part. If there’s no continuity at any setting, replace the thermostat.

Is it safe to replace a fridge thermostat on my own?

Yes, it’s generally safe to replace a fridge thermostat on your own as long as you follow safety precautions like unplugging the fridge before starting the repair. However, if you’re uncomfortable doing it yourself, it’s always safer to hire a professional.

How often should I replace my fridge thermostat?

There’s no set timeline for replacing a fridge thermostat as it depends on the model, usage, and maintenance. However, if you notice your fridge isn’t maintaining the correct temperature or is running constantly, it might be time to replace the thermostat.

Can a faulty thermostat damage my refrigerator?

Yes, a faulty thermostat can cause damage to your refrigerator. If the fridge runs too cold or too hot, it can lead to other components working harder to compensate, which can cause them to wear out faster. Also, if the fridge is too warm, it could lead to food spoilage.

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