How to Clean Laptop Fan—The Fan May Be in 5 Different Locations

Laptop cooling systems rely on fans and heatsinks to remove heat generated by the CPU and GPU. Over time, dust can accumulate.

A dusty laptop fan can cause overheating, loud fan noise, slow performance, and even unexpected shutdowns. Cleaning your laptop fan regularly helps improve airflow and keeps your computer running efficiently.

To clean a laptop fan safely:

1. Shut down your laptop completely.
2. Disconnect the charger and all external devices.
3. Clean the ventilation openings with compressed air or a soft brush.
4. Hold the fan blades still when using compressed air to prevent overspinning.
5. Open the laptop only if deeper cleaning is necessary.

If you are not familiar with laptop hardware, start with external cleaning before attempting disassembly.

Signs Your Laptop Fan Needs Cleaning

Your laptop may need fan cleaning if you notice:

• Fan runs loudly all the time
• Laptop becomes very hot
• Computer slows down during tasks
• Fan makes unusual sounds
• Laptop shuts down unexpectedly

Tools Needed to Clean a Laptop Fan

Before that, you need to prepare these tools before cleaning:

• Compressed air can or electric air blower
• Soft brush
• Microfiber cloth
• Phillips screwdriver (for internal cleaning)
• Small container for screws
• Anti-static wrist strap (recommended)

Avoid using:

• Water or liquid cleaners
• Hair dryers
• Strong vacuum cleaners directly on components

Cooling Fan’s Location in Laptop

As we all know, cleaning the cooling fan is always related to disassembling laptop. But, the difficulty degree of removing the cooling fan varies from computer to computer, depending on the location of the fan.

Place 1. The Fan Is in an Expansion Slot

If your laptop has a separate expansion compartment for the cooling fan, then congratulations, your notebook is the type with the least difficulty in dust removal. In most cases, you just need to unscrew 2 to 3 screws to remove the cover of the expansion slot. Then, you can clean dust from the fan and apply silicone grease.

Place 2. The Fan Is under the Bottom Panel

If your laptop is in this case, you need to remove all screws on the bottom to remove the bottom cover. Then, you can see the fan and clean dust from it.

Place 3. The Fan Is under a Bracket

The Dell Travel Box 7000-15 and Lenovo Rescue gaming laptops are in such a case. They adopt the structure above, but when we remove the bottom cover, we can only remove the dust and debris in the fan blades and heat dissipation fins.

If you want to smear silicone grease, you need to remove the bracket covering the upper layer of the heat pipe to strengthen the support strength.

Place 4. The Fan Is on the Palm Rest Side

If your laptop provides an expansion compartment on the back cover, but you can only see the hard disk, memory and other hardware when you remove the bottom cover, then your notebook is one of the most difficult to remove.

The disassembly of this type of notebook needs to start from the C side (the side of the palm rest where the keyboard is located). After unscrewing all the screws on the bottom, you need to use a tool to remove the palm rest.

In the process, it is necessary to avoid injury to the buckle and keyboard cable. Therefore, the difficulty of disassembly is relatively high.

When you remove the palm rest, you can clean dust from the cooling fan. But if you want to reapply silicone grease, you still need to continue deep disassembly: unscrew all the screws that fix the PCB motherboard, unplug all cables, remove the PCB motherboard and turn it over. You can see the heat pipe and heat sink there.

Place 5. The Fan Is Blocked by the PCB Motherboard 

If your laptop is like the above situation, but after removing the C side, you find that the fan is blocked by the PCB main board, unfortunately, your notebook is the most difficult to remove. It requires deep disassembly whether it is dusting or applying silicone grease.

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How to Clean Laptop Fan Without Opening It?

For most users, cleaning the outside vents is the safest first step.

Step 1: Turn off and unplug your laptop. Never clean a running laptop fan.

Step 2: Locate the air intake and exhaust vents. Laptop vents are usually located:

• Bottom panel
• Side edges
• Rear hinge area

Step 3: Use compressed air carefully.

How to Deep Clean a Laptop Fan by Opening the Laptop?

If your laptop is still overheating or the fan remains loud after external cleaning, dust may have accumulated deeper inside the cooling system.

A deep clean requires opening the bottom cover.

Here is the guide on how to clean laptop fan:

Step 1: Back up important files first, in case the laptop disassembly will damage data or even the computer hardware.

Step 2: Prepare tools, including a brush, a Philips-head screwdriver, a leather blower, thermal grease, etc.

Step 3: Disassemble the laptop to find the cooling fan. If you just want to clean the fan, you can use tools to clean the dust without removing the fan. But if you want to smear the silicon grease, you should remove the fan and the heat pipe.

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After cleaning:

1. Check that no screws or cables are loose.
2. Reconnect the fan cable if it was removed.
3. Install the bottom cover.
4. Tighten all screws.
5. Start the laptop and check airflow.

Bottom Line

How to clean laptop fan? This post gives 2 situations to do that. If temperatures remain high after cleaning, the problem may not only be dust. Other possible causes include old thermal paste, a faulty fan motor, blocked heat pipe.