How to Keep Your PC Cool in Summer: Airflow & Settings

With summer heat pushing room temperatures above 35°C for days at a time, PC owners should expect higher component temperatures, faster wear, and potentially worse gaming stability—even if fans run at full speed. The good news is that protecting your gaming rig in the hottest months usually doesn’t require expensive upgrades; it mostly comes down to airflow, cleaning, and a few practical settings changes.

Key takeaways

High ambient temperatures can shorten the usable life of PC components, even when fans are set to run hard.
Place the PC off the floor and leave a 10–15 cm gap behind the case to avoid blocking hot exhaust air.
Don’t remove a side panel to “help cooling,” because it can disrupt the airflow path inside the case.
Cleaning in summer can lower component temps by up to 5°C by removing dust from heatsinks and the GPU.
Limiting FPS reduces GPU workload and heat; the article cites targets like 60 FPS (or up to ~90) for many games and 144 FPS for action titles.
Undervolting by changing GPU/CPU voltage can reduce temperatures by as much as 10°C, with a small performance trade-off.

Improve airflow with better placement (and don’t break the case’s airflow)

The first step is physical positioning. If your PC sits on the floor, it will pull in more dust, lint, and pet hair from the environment. That buildup can clog the power supply intake filters and also obstruct fan blades, reducing cooling effectiveness when you need it most.

Next, keep the case away from walls. Leave at least 10 to 15 cm between the back of the PC and the wall, since that’s where hot exhaust air leaves the chassis. The same principle applies to the case’s side vents: reduce restrictions so the hot air can escape and cooler air can be drawn in.

Finally, avoid the common misconception that removing a side panel automatically improves temperatures. The article warns that taking off a side panel breaks the airflow pattern created inside the case.

Control the temperature around the PC, then clean it properly

Even premium cooling hardware can struggle if the room itself is extremely hot. If your gaming space is around 35°C, the PC will struggle to shed heat because it’s pulling in air that’s already close to the temperatures your components are trying to cool down from.

If you can’t avoid using the PC, the article recommends running it at night or in the morning—before heat peaks. If you have air conditioning, turning it on can reduce the temperature around the PC by roughly 10°C, easing the thermal load on the system.

Summer is also described as an ideal time to clean the interior, especially if you haven’t done so regularly. The goal is to reduce temperatures by up to 5°C through a simple process: remove dust filters and rinse them under a tap, then dry them thoroughly before reinstalling. After that, use compressed air or an electric blower to clear dust from heatsink fins (including the CPU cooler) and from the graphics card.

Reduce heat while gaming: cap FPS and consider undervolting

Gaming settings can directly affect temperatures. The article explains that higher FPS generally means the GPU has to work harder, which increases its operating temperature. If you’re not chasing ultra-high refresh rates, 60 FPS is presented as typically sufficient for many shooter-style games. It also notes you can raise that target slightly—up to around 90 FPS—depending on what you’re playing.

For action-heavy games, the article suggests that cutting FPS too aggressively can hurt performance against opponents. As a guideline, it states that 144 FPS is usually more than enough unless you can clearly perceive the difference between 144 and around 200 FPS. The emphasis is on keeping the system cool enough to play comfortably without overheating.

Beyond caps and cleaning, undervolting is presented as another way to lower temperatures for both GPU and CPU. By reducing voltage slightly, performance may drop a little, but the article claims it can also reduce temperatures significantly. As an example for GPUs, it says that a change from 1.05V to 0.90V can lower temperatures by up to 10°C, while also potentially reducing electricity costs.