![]() ![]() Whether or not they will blow air in or out is up to you. A PC Case with bad airflow will result in a higher PC Case temperature and also causes a higher temperature of the internal components. There should be an arrow on the frame that will show the direction of air flow. Having proper airflow in your PC Case is very important if you want to keep your components cool. If possible, memorizing the fan blade shapes is the best method to determine fan direction-you can tell immediately which way the fan is blowing. Know how many PC Case fans you need in your PC Case for optimum cooling. ![]() (In other words, the concave side is where air exhausts.) Oftentimes, the exhaust side also has the crosshatch supports for the fan’s frame, with a circular sticker in the center that lists brand and model information. If the fan blades look like the inside of a dish or bowl-that is, they’re curving toward you-that’s the exhaust side. (For the more technical out there: The convex side of the fan blades is the intake side.) Alaina Yee / IDGįan blades curving toward you? That’s the exhaust side. Can I revise the polarity connection to change the direction of airflow Made in Taiwan Custom RV Fans and PC Cooling Fans Manufacturer TITAN Technology. If you feel air blowing on your hand, the fan is an exhaust. If the fan blades look rounded-that is, they’re curving away from you-that’s the intake side. Two fans located perpendicular to each other fighting for air This will cause air pressure imbalance and reduced flow efficiency so having one fan as intake. Alaina Yee / IDGīlades curving away from you? That’s the intake side. Fortunately, you don’t need the arrow to tell you the direction of airflow. Not all fans have an arrow-or perhaps you’re trying to evaluate a fan that’s installed in a case or on a CPU cooler and you don’t want to unmount it to look for an arrow. ![]()
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