How to Fix a Mac That Is Overheating

Quick Answer

To fix a Mac that is overheating, save your work, close apps that are using excessive CPU, improve ventilation, stop demanding browser tasks, and install available macOS and app updates. If the Mac becomes unusually hot while idle, shuts down unexpectedly, shows battery swelling, produces unusual fan or hardware noises, or remains hot after basic troubleshooting, run Apple Diagnostics and contact Apple or an authorized service provider.

A Mac can feel warm during charging, video calls, gaming, video editing, large file transfers, and other demanding tasks. Heat is more concerning when it is persistent, accompanied by poor performance or unexpected shutdowns, or present when the Mac is doing very little.

Why Your Mac May Be Running Hot

A Mac produces heat whenever its processor, graphics hardware, battery, or other components are working. Common causes include:

CPU-intensive apps such as video editors, games, virtual machines, and file-compression tools
Many browser tabs, streaming video, web apps, or browser extensions
Charging while performing demanding work
Blocked air vents or use on a bed, couch, blanket, or lap
A hot room or direct sunlight
Background tasks after a macOS update, migration, backup, or large file transfer
An app that is stuck or malfunctioning
A fan, temperature sensor, battery, or other hardware problem

Apple silicon Mac models may remain relatively quiet because they often use less power and may not have an audible fan under normal conditions. An Intel-based Mac may run its fans more noticeably during heavy workloads. Fan noise by itself does not necessarily mean something is wrong.

1. Check Whether the Mac Is Actually Overheating

Before troubleshooting, look for the difference between normal operating heat and a potential problem.

Normal signs can include:

A warm case during charging or demanding work
Fans becoming audible during intensive tasks
Temporary warmth while exporting a video, processing photos, or installing software
The Mac cooling down after the workload ends

Warning signs include:

The Mac is very hot while idle or performing simple tasks
Performance becomes unusually slow for an extended period
The fans run at high speed constantly
The Mac shuts down, restarts, or displays a temperature-related warning
The battery appears swollen or the case is separating
You smell burning or notice smoke, liquid damage, or unusual electrical sounds

If you see smoke, smell burning, or suspect a swollen battery, turn off the Mac, disconnect its power adapter, and stop using it. Do not press on a swollen case or attempt to remove the battery. Arrange professional service.

2. Improve Ventilation and Lower the Ambient Temperature

The quickest fix is often to help the Mac release heat.

Move the Mac to a hard, flat surface such as a desk or table.
Keep air vents clear. Depending on the model, vents may be along the rear edge, sides, or underside.
Move it away from direct sunlight, radiators, heating vents, and other heat sources.
Lower the room temperature if possible.
Avoid placing the Mac on a bed, blanket, pillow, couch, or other soft surface.
Keep objects from blocking the area around the display hinge and rear edge.

Do not put the Mac in a refrigerator or freezer. Rapid temperature changes can create condensation and damage electronic components.

If you use a protective case, stand, docking station, or keyboard cover, temporarily remove or disconnect it to see whether airflow improves. Use caution with external stands: they should not block vents or force the Mac into a position that traps heat.

3. Use Activity Monitor to Find CPU-Intensive Apps

Activity Monitor shows which apps and processes are using system resources. Its CPU tab is particularly useful when a Mac is running hot.

Open Activity Monitor. You can find it in Applications > Utilities, or search for it with Spotlight.
Select the CPU tab.
Click the % CPU column to sort processes by processor usage. Click the heading again if you need to reverse the order.
Look for an app using unusually high CPU for several minutes, especially if you are not actively using it.
If you recognize the app, save your work and quit it normally.
Reopen the app later to see whether the problem returns.

Do not quit an unfamiliar system process simply because it appears near the top of the list. Some macOS processes work hard temporarily during indexing, updates, backups, or other maintenance. Ending the wrong process can cause instability or interrupt an operation.

Force-quit a frozen app

If an app is unresponsive and cannot be closed normally:

Save work in other apps if possible.
Press Option-Command-Escape.
Select the unresponsive app.
Click Force Quit.

Warning: Force quitting can discard unsaved changes in that app.

You can also use Activity Monitor:

Select the problem process.
Click the Stop button in the toolbar.
Choose Quit first when available.
Use Force Quit only if the process does not respond.

If the same app repeatedly causes high CPU usage, update it, remove unnecessary extensions or plug-ins, or contact the developer. Reinstalling the app may help, but back up important data first and check whether the app stores files in a location that could be affected.

4. Check Memory Pressure and Other Activity Monitor Tabs

High processor usage is not the only possible source of heat. In Activity Monitor, check:

Memory: The Memory Pressure graph shows whether the Mac is struggling to manage available memory. Heavy memory use can cause additional disk activity and reduced performance.
Energy: This tab shows apps using significant energy, which can help identify software that is draining the battery or increasing heat.
Disk: A process reading or writing a large amount of data may be performing a backup, transfer, indexing task, or file conversion.
Network: Heavy network activity may indicate streaming, cloud synchronization, downloads, or uploads.

These activities can be legitimate. For example, a new Mac may work in the background while downloading files or synchronizing iCloud data. If the activity is expected, let it finish while keeping the Mac well ventilated.

5. Check Charging and Power Accessories

A MacBook can become warmer while charging, especially when it is also performing demanding work. To test whether charging is contributing:

Save your work.
Quit demanding apps.
Disconnect the power adapter temporarily, if the battery has enough charge.
Wait several minutes and check whether the temperature and fan activity decrease.
Reconnect the adapter and observe whether the heat returns immediately.

Use the power adapter and charging cable that came with the Mac when possible, or use a compatible replacement from a reputable manufacturer. Inspect the cable, connector, and adapter for fraying, bent pins, discoloration, or damage.

Do not continue using a damaged charger. If the adapter becomes excessively hot, emits an odor, makes unusual sounds, or shows physical damage, unplug it and replace it.

Charging by itself is not a reason to stop using a MacBook. The concern is unusual heat, a damaged battery, or heat that remains excessive after demanding activity ends.

6. Reduce Browser Workloads

Browsers can make a Mac run hot even when no traditional desktop app appears busy. Video playback, web-based meetings, interactive documents, advertising scripts, cryptocurrency-mining scripts, and poorly written web apps can all increase processor or graphics usage.

Try these steps:

Pause streaming video, video calls, and browser-based games.
Close tabs you no longer need.
Quit the browser completely and reopen it.
Disable or remove extensions you do not recognize or no longer use.
Reopen tabs gradually to identify whether one page causes the heat.
Update the browser to its current available version.
Test the same website in another browser.

To close a browser completely, use Command-Q while it is active. Closing a window is not always the same as quitting the browser; background processes may continue running.

Warning: Quitting a browser can close tabs and interrupt downloads or web forms. Save information and check download status first.

If only one website causes the Mac to run hot, the site or one of its scripts may be responsible. Avoid the page temporarily and notify the site owner if the problem continues.

7. Restart the Mac

A restart can clear a stuck app or temporary background process.

Save your work.
Close open apps if possible.
Choose Apple menu > Restart.
Wait for macOS to start again.
Check whether the Mac remains hot while idle.

Warning: A restart closes open apps. Unsaved work may be lost, and active transfers or installations may be interrupted.

If the Mac is completely unresponsive, press and hold the power button only as a last resort until it turns off. This can cause data loss or interrupt disk activity. After it starts again, check for file damage and allow interrupted updates or synchronization tasks to finish.

8. Install macOS and App Updates

Updates can resolve bugs that cause high processor usage, crashes, or excessive background activity.

To check for macOS updates:

Open System Settings.
Select General.
Click Software Update.
Install available updates according to the on-screen instructions.

Update apps through the method used to install them. Apps downloaded from the Mac App Store can be updated in the App Store. Apps downloaded directly from a developer may include their own update option.

Warning: Save your work before installing updates. The Mac may restart, and an update can take time to complete. Keep the Mac connected to power when appropriate and do not interrupt the installation.

If the overheating began immediately after an update, background indexing, photo analysis, cloud synchronization, or other maintenance may be responsible. Give the process time to finish while monitoring the Mac. If the heat continues for an unusually long time, use Activity Monitor to identify the active process.

9. Test the Mac Without Startup Items

Open Apple menu > System Settings.
Select General.
Click Login Items & Extensions.
Review the list of apps that open at login and background items that are allowed to run.
Turn off an item you recognize and do not need to run automatically.
Restart the Mac and test it.

Warning: Disabling a login item changes system behavior. Do not disable security software, backup tools, or business-related utilities unless you understand the consequences. Record the original setting so you can restore it.

If the Mac becomes cooler after disabling a particular item, update or reinstall that software, or contact its developer.

10. Run Apple Diagnostics

Apple Diagnostics can check for certain hardware problems involving components such as memory, logic-board hardware, or sensors. It cannot identify every possible fault, and a normal result does not guarantee that all hardware is healthy.

Before running the test:

Disconnect external devices other than the keyboard, mouse, display, Ethernet connection, and power adapter when needed.
Save your work.
Make sure the Mac is on a stable surface with adequate ventilation.

On a Mac with Apple silicon:

Shut down the Mac.
Press and hold the power button.
Release it when startup options appear.
Press and hold Command-D.

On an Intel-based Mac:

Shut down the Mac.
Turn it on and immediately press and hold D.
Release the key when Apple Diagnostics begins.

Follow the instructions on screen and record any reference code. Provide that code to Apple Support or an authorized service provider.

If Apple Diagnostics cannot start, or the Mac shuts down during the test, that itself is useful information for a service technician.

Troubleshooting Persistent Mac Overheating

The Mac is hot but Activity Monitor shows little CPU usage

Check the Energy, Memory, Disk, and Network tabs. Heat may be caused by graphics activity, disk-intensive work, charging, poor ventilation, or a hardware sensor problem rather than a high CPU percentage.

Disconnect external displays, hubs, storage devices, and docks one at a time. A faulty accessory or cable can increase activity or cause instability.

The fans are loud all the time

First check for demanding apps, browser tabs, cloud synchronization, backups, and updates. Confirm that vents are clear and the Mac is on a hard surface.

If the fans remain loud while the Mac is idle after a restart, run Apple Diagnostics. Persistent fan activity can indicate a sensor, cooling, or software problem.

The Mac is slow and hot

High heat may cause the Mac to reduce performance to protect its components. Check Activity Monitor for high CPU, memory pressure, and disk activity. Quit demanding apps, reduce browser workloads, and restart the Mac.

Make sure the startup disk has sufficient free space for normal operation. Avoid deleting system files manually. Remove only files you recognize, and back up important data before making major changes.

The Mac shuts down or restarts unexpectedly

Save a backup if the Mac remains stable enough to use. Disconnect nonessential accessories, install updates, and run Apple Diagnostics. Repeated shutdowns, especially during light use, require professional evaluation.

The case is separating or the trackpad is difficult to click

These can be signs of a swollen battery. Turn off the Mac, disconnect power, and stop using it. Do not squeeze, puncture, bend, or open the MacBook. Contact Apple or an authorized service provider promptly.

When to Get Professional Help

Contact Apple Support or an authorized service provider when:

The Mac overheats while idle after restarting
It shuts down, restarts, or displays warnings repeatedly
The fans are constantly loud without an obvious workload
Apple Diagnostics reports a reference code
The battery is swollen, damaged, or unusually hot
You smell burning, see smoke, or find liquid damage
Basic ventilation and software troubleshooting do not help
The problem began after a drop, impact, repair, or liquid spill

Back up important files before service if the Mac is safe and stable enough to use. If the Mac shows signs of battery damage or electrical danger, do not keep it running just to create a backup.

Frequently Asked Questions

Is it normal for a MacBook to get hot while charging?

Some warmth while charging is normal, especially when the MacBook is also running demanding apps. Excessive heat, a damaged charger, a swollen battery, or heat that continues during light use is not normal and should be investigated.

How hot is too hot for a Mac?

There is no single surface temperature that applies to every Mac model and workload. Instead, consider the symptoms: persistent heat while idle, constant fans, severe slowdowns, warnings, unexpected shutdowns, or battery damage are reasons to troubleshoot or seek service.

Should I use a cooling pad for my MacBook?

A cooling pad may improve airflow in some setups, but it is not a substitute for clear vents, a hard surface, and a reasonable room temperature. Choose accessories that do not block the MacBook’s vents or place pressure on its case.

Can too many browser tabs make a Mac overheat?

Yes. Browser tabs can run video, scripts, web apps, and other background tasks. Close unnecessary tabs, quit and reopen the browser, disable unneeded extensions, and use Activity Monitor to identify excessive CPU or energy use.

Does restarting fix an overheating Mac?

A restart can stop a stuck process and clear temporary software problems. It will not repair blocked ventilation, a failing fan, a defective sensor, a damaged battery, or another hardware fault.

Should I shut down a Mac that is very hot?

If the Mac is unusually hot, save your work and choose Apple menu > Shut Down. If it is unresponsive, hold the power button only as a last resort. If you smell burning, see smoke, or suspect battery swelling, disconnect power and stop using the Mac immediately.

Can dust cause a Mac to overheat?

Dust can restrict airflow or affect cooling components, particularly in older models. Do not open a MacBook or use tools inside it unless you are qualified and understand the risks. Professional cleaning and inspection are safer options when internal buildup is suspected.

Final Thoughts

A warm Mac is often responding normally to charging or a demanding workload. Start by improving ventilation, checking Activity Monitor, reducing browser activity, and quitting or updating the software responsible. If the Mac remains hot while idle, shuts down unexpectedly, develops battery or case damage, or reports a diagnostic error, stop relying on software fixes and arrange professional service.