Symptoms
- Router is hot to the touch, especially on top or near vents
- Performance drops or the router disconnects more when it's been running a while
- Router is placed in an enclosed cabinet or stacked with other electronics
- Fan (if it has one) is unusually loud or not spinning
Likely causes
- CommonPoor ventilation around the routerRouters give off heat continuously and need open air around their vents to stay cool.
- CommonDust buildup blocking ventsDust insulates the internal components and blocks airflow over time.
- PossibleRouter stacked directly on or under other warm electronicsModems, set-top boxes, and routers stacked together trap heat between them.
- PossibleRouter placed in direct sunlight or near a heat sourceExternal heat adds to the router's own operating temperature.
What to do
- Move the router to an open shelf with space on all sides, away from direct sunlight, heaters, or enclosed cabinets.
- Unplug the router and gently wipe dust off its vents with a dry cloth or use compressed air to clear vent openings.
- Separate the router from the modem and any other devices it's stacked with, giving each its own space.
- If the router has a fan, listen for it running normally; a silent or grinding fan may need cleaning or indicate a failing part.
- Let the router cool down for 15–30 minutes unplugged if it's very hot, then power it back on in its new, better-ventilated spot.
- Monitor whether performance improves over the next day with better airflow.
- If the router still runs unusually hot in an open, ventilated spot, it may be nearing end of life and worth replacing.
Tools and parts
- Dry cloth or compressed air
When to call a pro
If the router shuts itself off from overheating even in a well-ventilated spot, replace it rather than continuing to use a unit at risk of failure.
Safety
Use caution
Always unplug the router before cleaning it, and let it cool down before handling if it's very hot to avoid burns.