If your fridge isn’t cooling properly, start by checking the temperature settings and ensuring your vents aren't blocked. Next, verify the door seals tightly, and pull the unit out to clean the condenser coils.
When your fridge isn't cooling enough, first check the thermostat (aim for 37∘F37 raised to the composed with power cap F37∘𝐹 for the fridge and 0∘F0 raised to the composed with power cap F0∘𝐹 for the freezer) and ensure it isn’t overpacked. Next, do a quick power reset by unplugging the unit for 5–10 minutes to reboot the control board.
There are several possible causes for a refrigerator that doesn't cool, including dirty condenser coils, poor ventilation, improper installation, faulty or dirty gasket seals, unorganized food storage, appliance location, and malfunctioning internal parts.
First, unplug or shut off the power to your fridge on your home's circuit breaker. Leave it off for five to 10 minutes, then restore power and adjust the temperature settings to where you want them (aim for 32ºF-40ºF). It can take up to 24 hours for the refrigerator's temperature to stabilize.
A continuous hum is usually a sign your fridge is safely keeping food cold. However, it shouldn't run endlessly. Modern, energy-efficient compressors are designed to run 80% to 90% of the time to maintain consistent temperatures, but if the motor never shuts off, you may have an underlying mechanical issue.
The following are nine signs your refrigerator compressor could be failing.
Unplugging a fridge does reset it. It clears minor electronic glitches, reboots the control board, and resets sensors.
Watch for warning signs like food spoiling prematurely, clicking or buzzing noises, continuous motor running, or excessive frost/condensation. Older units often cost more to repair than replace.
The higher the number, the colder your fridge will be.
This can be counterintuitive, as many people assume a higher number means warmer. For most standard fridges, setting the dial to the middle number (3 on a 1-5 scale or 4 on a 1-7 scale) typically achieves the recommended temperature of 3-5°C.
A faulty fridge thermostat will fail to regulate internal cooling. The most common symptoms include the compressor running constantly (freezing food), the fridge not cooling at all, or temperatures fluctuating wildly. This often leads to spoiled food, higher energy bills, and frost buildup.
Check for Large Containers Blocking Airflow
Large containers in back may block the flow of cold air and adversely affect the temperatures in the refrigerator. Move tall items forward so they don't block the air flow.
If the fridge is still at or below 40 °F, or the food has been above 40 °F for only 2 hours or less, it should be safe to eat.
If your fridge is making loud clicking noises, constantly running without cooling, or failing to turn on entirely, the compressor may be bad. You can confirm a failing compressor by checking the electrical pins with a multimeter or observing the motor's physical behavior.
The compressor, coils and control board are the most expensive repairs. Your fridge's brand, model and size, plus your location, will impact repair costs. If your refrigerator is more than 6 years old and it will cost you more than half its original price to repair it, consider replacing it instead.
A newer fridge with a straightforward problem is often worth fixing. An older refrigerator with a major sealed-system issue (like a compressor problem) may be a better candidate for replacement — especially if it's already had multiple repairs.
The average refrigerator lasts between 10 to 15 years. However, this lifespan varies significantly based on the style, brand, and how well the appliance is maintained.
Discard refrigerated perishable food such as meat, poultry, fish, soft cheeses, milk, eggs, leftovers, and deli items after 4 hours without power or 2 hours after the temperature rises above 41 °F. At any time, discard spoiled, moldy food and anything that does not look or smell right.
5 Signs That You Need a New Refrigerator
To hard reset a fridge, unplug the power cord or trip the circuit breaker for 5 to 10 minutes. This clears the main control board, recalibrates internal sensors, and resolves cooling or display glitches. Once the power returns, reset your temperature settings.
Gregor recommends unplugging microwaves, coffee makers, toasters, blenders, food processors, kettles, slow cookers, rice cookers, and ice makers — pretty much any small kitchen appliance. Appliances with an auto timer are especially important to unplug, according to Tom Jameson, owner of AstroWatt Electric.
The time it takes to reset a refrigerator depends on whether you are doing a quick electrical reset or a full temperature reset.
The very first thing to check when a refrigerator stops cooling is its power supply and thermostat. Ensure the power cord is securely plugged in, the outlet is active by testing it with another device, and the circuit breaker hasn't tripped. Then, verify that the internal temperature dials are set correctly.
Whether fixing a refrigerator compressor is worth it depends mostly on the age and cost of the fridge. Compressor replacement typically costs $500 to $1,200+ for parts and labor. If your appliance is over 8–10 years old or the repair exceeds 50% of the cost of a new fridge, you should generally replace the appliance instead.
Testing a refrigerator compressor involves checking three electrical pins for shorts to ground and evaluating the motor windings to ensure they are electrically sound. If your compressor is clicking on and off or not running at all, this step-by-step diagnostic process will help isolate the issue.