Never Put an Overheated Laptop in the Refrigerator. Here’s Why

Refrigerator air may cool a computer quickly, but condensation can turn a heat problem into costly water damage.

Putting a hot laptop in the refrigerator may seem like a quick solution, but it can expose the computer to condensation and sudden temperature changes. The safer response is to shut it down, disconnect the charger, move it away from heat and let it cool gradually on a hard, dry surface.

Why Refrigerators and Electronics Do Not Mix

A refrigerator is designed to cool food, not electronic equipment. When a warm laptop enters a cold space, its metal, glass and internal components begin cooling at different rates.

The most serious concern is moisture.

Warm air can hold more water vapor than cold air. When air or a surface cools to its dew point, water vapor begins turning into liquid. The National Weather Service defines the dew point as the temperature at which air becomes saturated and can no longer hold all its moisture as vapor.

It is the same process that covers a cold beverage with water droplets on a humid summer day. The problem is that a laptop has vents, ports and other openings through which moisture can reach sensitive components.

Condensation May Form Where You Cannot See It

Visible droplets on the laptop’s case are a warning. However, condensation may also develop inside the computer.

Moisture can collect around:

* The motherboard and other circuit boards
* Battery connections
* Charging ports
* USB and display ports
* Cooling fans
* Solid-state drives or hard drives
* The keyboard and trackpad
* Display connections

Water containing dust or other contaminants may conduct electricity. If the laptop is turned on while moisture is present, it may cause a short circuit. Even if the computer works at first, lingering moisture can contribute to corrosion and delayed failures.

Dell warns in one of its computer guides that condensation may form when a device moves between places with very different temperatures or humidity levels. The company advises owners to let the computer reach room temperature before using it. Dell’s guidance says users should allow enough time for moisture to evaporate.

The Greatest Risk May Come After Removing the Laptop

Many people assume the refrigerator itself is the only danger. In fact, removing a cold laptop and carrying it into a warm, humid room may create an even greater condensation risk.

If the laptop’s surface temperature is below the room’s dew point, moisture from the surrounding air can settle on the computer. This can happen on external surfaces and potentially inside the device as room air enters through its vents.

A short stay in the refrigerator does not guarantee that damage will occur. Room humidity, refrigerator temperature, cooling time and the laptop’s design all affect the outcome. Still, there is no practical reason to accept the risk when safer cooling methods are available.

Sudden Cooling Does Not Solve the Cause

An overheating laptop usually has an underlying problem. Placing it in a refrigerator may lower the case temperature temporarily, but it does not fix blocked airflow, heavy processor use, failing fans or dust buildup.

According to Dell’s overheating guidance, dust buildup around fans and vents is one of the most common causes of computer overheating.

Other possible causes include:

•  Using the laptop on a bed, blanket or couch
•  Running demanding games or video software
• Leaving the computer in direct sunlight
• Charging the laptop in a hot room
• A damaged or failing cooling fan
• Outdated firmware or system software
• Too many programs running at once
• Aging thermal material inside the computer

Modern laptops often protect themselves by slowing the processor, increasing fan speed or shutting down. These protective responses can be frustrating, but they are safer than forcing the computer to continue operating at a damaging temperature.

How to Cool an Overheated Laptop Safely

If a laptop becomes unusually hot, take the following steps:

1. Save your work if the computer is still responsive.
2. Disconnect the charger and external accessories.
3. Shut down the laptop.
4. Move it away from direct sunlight or another heat source.
5. Place it on a hard, flat and dry surface.
6. Make sure nothing is blocking the vents.
7. Allow it to cool naturally before restarting it.

A fan may help move room-temperature air around the laptop. Do not aim extremely cold air directly into the vents, and do not place the computer on ice or a frozen gel pack.

Dell recommends using laptops on hard, flat surfaces because blankets, pillows and other soft materials can block air intakes. The company also says a laptop cooling pad may improve airflow. Dell’s laptop heat guidance lists a normal room-temperature operating range of 32 to 95 degrees Fahrenheit for many models, although owners should check the specifications for their particular computer.

Clean the Vents Carefully

Dust can reduce airflow and make cooling fans work harder. Turn off and unplug the laptop before cleaning its exterior vents.

Follow the manufacturer’s directions when using compressed air. Never turn a compressed-air can upside down because it may release extremely cold liquid into the computer.

If the laptop remains hot after its vents are cleaned, professional inspection may be needed.

What If You Already Put It in the Refrigerator?

Do not panic, but do not immediately turn the computer on.

Take these precautions:

•  Shut it down if it is running.
• Disconnect the power adapter.
• Remove it from the refrigerator.
• Leave it in a dry place at room temperature.
• Wait until it has fully warmed and any moisture has evaporated.
• Follow the manufacturer’s instructions before attempting to restart it.

There is no single safe waiting period for every situation. The amount of moisture, room humidity and internal design all matter. If you see condensation, detect liquid inside a port or suspect moisture reached the battery, contact the manufacturer or a qualified repair service.

Do not test a wet device repeatedly by pressing the power button. Applying electricity while moisture is present may make the damage worse.

The Same Warning Applies to Phones and Tablets

Phones and tablets can also overheat in cars, direct sunlight or during heavy use. They should not be cooled in a refrigerator or freezer.

Apple tells users who receive a temperature warning to turn off the device, move it away from direct sunlight and allow it to cool. The company does not recommend extreme cooling. Its temperature guidance also notes that charging, display brightness and performance may be reduced when a device becomes too warm.

If a phone is overheating:

• Stop charging it.
• Remove the case if it is trapping heat.
• Close demanding applications.
• Move the phone into the shade.
• Turn it off and let it cool gradually.

When Overheating Signals a Larger Problem

A laptop that becomes warm during gaming, video editing or another demanding task is not automatically defective. Fans may run faster because the computer is working harder.

Seek technical assistance if the laptop:

• Shuts down repeatedly
• Produces a burning smell
• Has a swollen battery or raised case
• Makes grinding or clicking sounds
• Has a fan that never runs
• Becomes extremely hot during light use
• Displays repeated temperature or fan errors

Stop using the computer immediately if the battery appears swollen. Do not press on the case, puncture the battery or continue charging it.

Protect the Computer and Your Data

A refrigerator offers fast cooling, but fast is not the same as safe. Condensation can reach places users cannot see, and restarting the laptop too soon may turn a temporary overheating problem into permanent damage.

Use a hard surface, clear the vents and allow the computer to cool at room temperature. If overheating continues, back up important files and have the cooling system inspected. A few minutes of patience may protect both an expensive device and the information stored inside it.