BACKJAN 30, 2026
It’s easy to get used to the low hum of your refrigerator. But when that hum never seems to stop, it’s a sign that something isn’t quite right. A refrigerator that runs constantly is working harder than it should, which can lead to higher energy bills and a shorter lifespan for the appliance.
Looking for more guidance? Take a look at our Repairs overview.
Hearing your fridge run all the time can be a source of stress, but it’s a very common issue that homeowners encounter. The good news is that the cause is often simple and something you can identify and fix yourself. The problem isn't usually that the refrigerator is broken, but that something is preventing it from cooling efficiently.
This guide will walk you through the most common reasons a refrigerator runs nonstop and provide clear, step-by-step instructions to resolve the issue.
Image Alt: A homeowner stands with their hand on their chin, looking at their kitchen refrigerator.
Before we dive in, it helps to understand how your refrigerator is supposed to work. The compressor is the part that makes that familiar humming noise. Its job is to circulate refrigerant to keep the inside cold. Once the set temperature is reached, the compressor should shut off. It will then cycle back on as needed to maintain that temperature. If it never shuts off, it’s struggling to reach or maintain its target temperature.
Let’s figure out why.
Follow these steps in order, starting with the simplest and most common fixes. For most of these, you’ll need to wait for a period of time after making a change to see if it worked.
A refrigerator needs room to breathe. It releases heat from its coils to keep the inside cool. If it’s in a tight space or next to a heat source, it has to work much harder.
The condenser coils are where your refrigerator releases heat. Over time, they collect dust, pet hair, and debris, which acts like an insulator and traps heat. This is one of the most common causes of a constantly running fridge.
This is safe to try yourself.
You will need:
Here’s how to clean them:
After cleaning, monitor the refrigerator for the next 24 hours. If it begins to cycle normally, you’ve found the fix. This is a task worth adding to your annual home maintenance plan; the Casa app can help you keep track of it.
The rubber gaskets, or seals, around the refrigerator and freezer doors keep cold air in and warm air out. If they are dirty, cracked, or torn, warm air can leak in, forcing the compressor to run continuously.
This is safe to try yourself.
If the seals are damaged or fail the dollar bill test even after cleaning, they likely need to be replaced. You can often order a replacement gasket from the manufacturer and install it yourself, or you can call a professional.
If the temperature is set too low, the refrigerator may struggle to reach it, especially if the kitchen is warm.
Cold air needs to circulate freely inside the refrigerator and freezer. An overstuffed compartment or a poorly placed item can block the air vents, leading to inefficient cooling.
If you have tried all the steps above and your refrigerator is still running constantly after 24 hours, it is time to call an appliance repair technician. Continuing to troubleshoot could lead to more complex issues.
The problem may be related to a more technical component, such as:
A trained professional has the diagnostic tools and expertise to safely identify and repair these issues.
A refrigerator that won’t stop running is a clear signal to take action. By working through these simple diagnostic steps, you can often solve the problem yourself, saving money on both your energy bill and a potentially unnecessary repair call. You now have a clear plan to restore peace and quiet to your kitchen.
For guidance on all your home’s systems and appliances, from routine maintenance to unexpected repairs, download the Casa app. We’re here to help you feel prepared and confident in managing your home.
