The unobstructed side, where you can see the whole fan blade and logo in the center, is the intake side. alot of times it doesnt matter which way the fan goes, but just put it to blow air towards the heatsink if you're not sure. If you’re interested in finding out more, here’s a great post with some of the best box fans for white noise you can buy. if i reverse them, will it change direction? The wisest course is to remove the fan and install a GM supplied part. You can expect that side of the fan to be the exhaust side. I'm debating flipping the exhaust or CPU fan, but like I said, I cannot tell which direction it's spinning. There’s no kind of assumption to be made in many cases like “the side with plastic bars connecting the motor to the frame” as this is incorrect. PSU or Power Supply Unit is one of the most important components of a PC because it is the only component that provides power to all your internal computer components that include a processor, motherboard, hard drive, SSD, graphics card, case fans, etc.It can get hot during load and for this, it comes equipped with a fan for cooling. Front fans should be sucking cool air in (arrow towards MOBO), rear fans are obviously exhaust (blowing out, arrow facing the back of case), and side panel fans are dependent upon location. Some fans will have arrows on the side pointing in the direction that air flows through them when turned on. The direction of rotation This type of fan can rotate in both directions, without any change in fan power consumption and air volume. Common PC case (and other) fans are not standardized. Just remember these basic tips: Do you have suggestions, more questions, or wish I covered some topics in more detail? Grant No. posted 2007-Jul-24, 8:24 pm AEST They spin with the pointy end of the blade cutting the air first. Even tiny PC fans are optimized for aerodynamics and quietness. If you’re lucky enough to find that on one, it makes it even easier to tell! Great article. I see air filters all that time that have been installed backwards. It is an Akasa fan. If a fan has its voltage reversed or is designed to rotate in the other direction then yes, the airflow can be reversed. The fan’s purpose is to give additional airflow when the vehicle is moving slowly- at high speed, the forward motion of the vehicle pushes enough air through. Keep the fan direction in mind when you’re looking to cool down or warm up a room. How can I tell which sides expelling air? Archived. It is an Akasa fan. Iamanerd2 02-14-2013 01:08 AM Stand directly beneath the ceiling fan while it is running. 2. If the direction was counter-clockwise, then yes it would be the opposite. fact – electric fans don’t cool a room by dropping the temperature. I think the type of fan called a “centrifugal inline duct fan” would be the closest to what you’re describing. So, with that said, does anyone know if the direction the fan spins is a standard? Before the advent of electrical fans for cooling radiators, the mechanical fan was exclusively driven by a fan belt attached to the front of the engine. https://www.maketecheasier.com/intake-exhaust-fans-airflow-desktop-pc Or, you could watch the fan as your computer is powering off (the fan accelerates too fast due to electricity as it's starting up which makes it impossible to tell unless you're Ted Williams, but when it's slowing down, it's just friction and some magnets). A heat sink on the processor or another internal cooling unit can suck or blow depending on the heat sink and configuration of the computer's internal components. That’s because a fan always has the same basic design in one form or another: fans use angled and slightly curved blades to cut through the air and force it forward or backward depending on the direction of rotation. I asked the same question of myself when I wanted to mount an additional fan inside a side vent on the PC case to blow air on the nearby graphics card. Copyright © Copyright © 2017-2021 AFresherHome.com. Should the fans be set to blow air through the radiatior and out to the top of the case? You can see the PSU airflow in the diagram given below. How can I know on which direction should I set the new one to run. save. They’re different from other types as they produce a tall, vertical area of air and often oscillate (move side to side) to cool a room. That way you can tell which way a fan blows nearly 100% of the time and especially if one isn’t marked with arrows or a label to tell you. My goal is to help you enjoy a fresher home! As I have also advised many times. This fan works as an intake fan for the PSU that sucks in air and blows it on the components inside the PSU, where then it exits from the rear vents of the power supply. report. This morning i stripped the PC to clean out all the dust. How to tell which direction fans are blowing. Ceiling fans help cool people in summer by producing a wind-chill effect as the fans circulate air downward. The airflow depends on the design of the fan but will always follow the 2 rules above, guaranteed. But do you know how to tell which way a fan blows? This causes air to blow upwards (to the front of it). :confused: Does it really matter whether it sucks or blows? Left: This fan is the most common type, as it can be mounted backward if you need to reverse airflow. Joined Jan 13, 2008 Messages 74. If it’s moving clockwise, wouldn’t the air move from the front of the fan to the back (in this picture) since the blades would “‘scoop” the air from the front? Air will blow in the other direction (towards the back). Posted by 2 years ago. I tried looking at it upon startup, but it spins so fast, so qucikly, that I cannot honestly tell which direction it's going. I have 5 enormous fans constantly blowing away on my unit. Changing the direction of your ceiling fan in the summer and winter not only makes you feel comfy, but it also allows you to adjust the thermostat and give your AC or heating unit a much needed break (your wallet will also get some much-needed rest, trust us). Here are 3 ways to tell which way a fan blows: The direction a fan blows air is always determined by (A) the shape of the blades (sometimes called propellers) and (B) the direction they turn. By changing the direction a fan is mounted, it can act as either an intake or exhaust. You will also be able to identify the Exhaust side as you will see power wires entering the fan motor. Wanted to connect it only in hot weather. I have a Define Mini C and it comes with 2 stock fractal design fans. Here’s a helpful post with some of the best tower fans you’ll find today. Therefore, unless the power polarity is reversed, it will blow air forward. Though you might not expect to need to change a vent fan's direction, this could become a necessity. Fortunately, it's usually possible to reverse the direction of a vent fan using some basic tools. share. This morning i stripped the PC to clean out all the dust. 2. When looking at the fan so that the circular sticker with the Noctua logo is facing you, the direction of airflow is towards you and the sense of rotation is clockwise: . This forced the fan to "suck" air through the radiator. some of the best box fans for white noise you can buy. These two characteristics of a fan are probably the easiest and most common way to tell which way it blows. look at the “An everyday example” picture, the rotation direction and airflow direction are all wrong, the rule is very simple, the side with plastic bars connecting the motor to the frame, is the side where the air comes out. Perhaps you're in the middle of renovations and need to change the flow of air or the motor to the fan broke and the replacement arrived rotating in the wrong direction. Infographic – Fan facts and airflow basics, How to tell which way a fan blows – 3 basic methods. A heat sink that is both active and passive blows air through the finned radiator to help the heat escape faster.. Case fans. How to Tell Which Direction the Ceiling Fan Is Going for Heat. Right now, they are set as intake fans, so they blow air in, and not out. Because of how they work (and how most are designed) there are great clues to help. but basically you should have fans that blow cool air in and fans that blow hot air out. As the fan spins, it can be thought as chopping at the air. Ordinarily, you’ll most likely find this on general-purpose fans like small DC powered fans for electronics cooling. Of course, be careful not to allow your fingers to snag in the fan … You cannot reverse the direction of the fan externally by simply reversing the polarity of the power. how much electricity an air conditioner uses vs a fan here. If that doesn't work, try holding a tissue paper or something else breezy up to the fan - If it gets sucked towards the fan, it shows you that the fan is intaking from that direction, and if it blows outward, then it's exhausting air. Now obvious, winds don’t blow from both directions right? I just came across your site and appreciate the site also and wanted to ask a question. (the side with the guard/motor support) If a blade is angled down and the fan turns in the same direction as the blade angle, it will blow forward. In this image you can see exactly what I’m describing: the fan is rotating in the same direction as its blades which are angled downwards. Fans have a convex side and a concave side. First I wanted to buy a new computer case fan in eBay. I recently got a Cryo LX and it blows air onto the laptop, I want to try to mod it to have the fans spin in opposite direction. Generally, you want the case fans in front of the case drawing in air while the fans at the rear blow air out. If not, I’d love to show you how. 1. Fans powered by alternating current (AC) such as common household 120V or 220V fans typically can only blow forward. Even tiny PC fans are optimized for aerodynamics and quietness. An example of some common fans with markings to show which way air blows. The direction a fan blows air is always determined by (A) the shape of the blades (sometimes called propellers) and (B) the direction they turn. That’s because DC power can change the operation of the electric motor inside the fan, causing the blades to spin in the opposite direction and force air to the rear. The Rear or Exhaust side (the side that the air comes out of) of our fans will always be the side that houses the fan motor. The side of the fan that has the support structure to hold the motor and wires going to it is the output side. Air conditioning units do so by removing heat from the air. How can I change a fan from suck to blow? How do most people have it? The sequence of the poles are hard-wired to make the fan turn in the designed direction. Note: Some older and cheaper Power Supplies come with an 80mm fan at the rear. Right: This fan is less common but does have some uses where the airflow going to the rear is important. They work off of the principle known as forced convection. Centrifugal fans can only blow air radially outwards. Once you’ve got the basics down it’s not hard at all! The Rear or Exhaust side (the side that the air comes out of) of our fans will always be the side that houses the fan motor. Fans generally only come in a few basic designs, most of which are axial or centrifugal types. I'm a do-it-yourself fanatic from Atlanta, Georgia. Want to know how much energy a fan can save? You should also heed the placement of the fans. Question- I have the corsair H110 mounted EXACTLY as shown in the picture, (top-mounted) with the fans mounted to the bottom of the radiator. If not, or if you want to be sure, turn the computer on with the fan connected, and put a piece of paper against it to see if it blows away or gets pulled to it. Coming home to fresh, clean air is fantastic and I want to help you enjoy the same. You can also look at the curve of the fan’s blades to determine how it’s carving the air, or spin by hand and feel for airflow. By simply adjusting your ceiling fan direction, you can warm your home in those frigid winter months. The direction of air movement for a fitted fan can easily be confirmed with a slither of paper. It’s best to run the fan on a low speed so that it doesn’t create too much of a cooling breeze. One side it will obviously be blowing and pushing your hand away. The only problem is i cant remember which way the rear case fan was facing. That adds up over time! The clearance between the ceiling fan blades and the ceiling should be a minimum of 10 inches. Fans are also very helpful in some cases for blocking outside noises that cause us stress and interrupt sleep, studying, or working. I apologize for some of the rude comments. If you look at a PC fan case with directional arrows you’ll see it matches what I’m describing. They don’t work by chilling the air. The instruction manual of the fan will also tell you how to change the ceiling fan direction for that model. The Intake-exhaust direction should go front-to-back and bottom-to-top. In fact, I personally verified the information and examples in this article with actual fans rather than make assumptions as you did in your comment. Then I thought of putting a computer fan on the desk for hot summer days but I couldn't tell from the picture in which direction the fan would rotate. Big fans also keep it quieter. Remember to keep the blades nice and clean to keep the fan working at its best! The way I think of this is to ask the question as to what is the leading edge of the blade as it rotates? The arrow points in the direction of air flow. The direction of the PSU fan is crucial for airflow. But....I have rotated the fans now roughly 20 times, but nowhere does it show arrows indicating the airflow. Once you’ve located where the PSU will sit, check the case for any grills or vents directly beneath this location. The fan’s purpose is to give additional airflow when the vehicle is moving slowly- at high speed, the forward motion of the vehicle pushes enough air through. Be sure you’re using fans to improve your quality of life (and save money) as much as possible! Fans create a cooling effect by the principle known as forced convection. Airflow through the case is important, so yes, it matters. Lastly, the fan airflow can be identified by the arrow markings on the fan housing. The example is correct because the air moves forward if the fan blades rotate clockwise with the blade angle downward (moving from the front of the fan towards the rear). With the simple flip of a switch or tug of a chain, you can start saving costs on your heating and air conditioning bills. It’s a great and cost-effective way to help you focus, relax, or sleep better. Air should travel in clear path through the case. it does matter. AFresherHome.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. The direction of the PSU fan is crucial for airflow. Electric fans can run and help cool you and your room with up to an amazing 60% less power than air conditioning units! Fan airflow, as I stated in the article, always depends on the particular fan and is based on 2 things: 1. Although your comment was rude and misplaced I’d like to respond in order to clear up your misconceptions. Being able to tell which way a fan blows isn’t difficult in most cases. Spinning this way the fan then pushes the air ahead of it. Determine where the PSU is intended to fit; this is typically at the bottom of the case in most modern chassis designs. If the fan is attempting to blow into a restriced area (like into a PC heatsink with little clearance) the air can't be thrown outward and away efficiently and instead creates pressure waves and the fan ends up pushing those pressure waves around in a circle in the cavity and moving much less air in total. Hi Don. The fins on a fan sort of "scoop" the air up so if the fins are curving away from you then the air will blow towards you. If the fan is not OEM, the air volume may be off and the electrical characteristics could be different. They also keep air circulating within a room, offering a continual effect that makes you more comfortable. Alternatively, you can plug the fan in and place a tissue on a side of the fan to determine the direction of air flow. If you want to heat an area the fan is set behind the radiator (or other heat source) and blows forward through the surface area fins to push the heat outward (nominally, forward). Keep the fan direction in mind when you’re looking to cool down or warm up a room. If the fan has a sticker, the airflow probably goes from the other side to the side with the sticker. To figure out whether your PSU fan needs to point up or down, start by looking over your PC case. One set of twin fans sucks while another other set of twins blows. But did you know? The only problem is i cant remember which way the rear case fan was facing. High heat build up, high head pressures, inefficient is an understatement. It also depends strongly on the fan’s intended use as well. (can't test as waiting for motherboard). The fan at the bottom of most laptops blow air out, so wouldn't a cooler that blows air onto the laptop work against the laptop fans? Does It Matter Which Room You’re In? 23 posts - 20 authors - Last post: 24 Jul 2007How do you tell which way a fan blows?. 17.7K views View 3 Upvoters The other side will be doing the opposite and will suck your hand in. You can see the blade shape in the picture which gives a clue about this as well. However, direct current (DC) fans are often reversible. Conversely, run a fan clockwise to amplify the heat from a fireplace or any other heat source in a room. Do not mount exhaust fans on the bottom of the case; since hot air rises, a bottom-firing exhaust fan will be working against physics by expelling slightly cooler air instead of warmer air. Hi Bobby and thanks for dropping by. Because of that, it’s important to have a well-designed fan with great airflow and especially one with an oscillation feature to move back and forth, covering a large area in a room. As I'm sure any rockstar could tell you - the bigger the fan, the better the blow. In this video, I explain how to setup your cooling fans to create neutral movement air flow. The direction of air movement for a fitted fan can easily be confirmed with a slither of paper. Should the fans be set to blow air through the radiatior and out to the top of the case? Tower fans like the popular Lasko Wind Curve at Amazon are an excellent example of this. Centrifugal fans normally only blow in the direction of the outlet as shown, while axial fans may be reversible in some cases. in this way, you'll achieve … This is a common small fan powered by direct current (DC) and used for many electronics cooling applications. So you mount the fan in the direction you want the air to go. While many variations of fans exist, nearly all fall into just a few basic categories as the most important design principles are the same. Depending on the time of year, you'll want to change the direction of your ceiling fan so that it blows cool air around the room on a hot day, or distributes warm air on a cool day. Here are some great fan facts to know. Question- I have the corsair H110 mounted EXACTLY as shown in the picture, (top-mounted) with the fans mounted to the bottom of the radiator. Hello Tony. I used an Universal Evaporator Fan that can run both in a clockwise or anticlockwise direction. Not only that, I’ll help you better understand how fans work along with sharing some helpful facts to know. There are several options for how a CPU cooler can exhaust heat from the CPU. Standing alone, the blow side of a fan does produce a more concentrated, faster moving, and more turbulent "river" of air compared to the intake side where air is drawn almost equally from all directions. It should draw air through the radiator from front to back. A fan blade is designed to run in one direction, otherwise it only moves about half of the air it should be. Determine where the PSU is intended to fit; this is typically at the bottom of the case in most modern chassis designs. Here the rear 80mm fan works as an exhaust fan for the PSU. A simple but classic box fan like this popular Lasko 3720 model produces a soothing and calming “white noise” that can improve your quality of life. Airflow will always flow from leading edge to trailing, just like the wing on an airplane. Ideally, your computer should suck and blow at the same time. A fan that blows air out of the case will blow the paper away from case. Secondly, the windmills take the direction of the wind no matter which side. Right now, they are set as intake fans, so they blow air in, and not out. Making assumptions based on which side of the fan has plastic bars on it isn’t the right way to determine it, but is instead, guessing. I appreciate this site, but in the “every day example” you have of a PC case fan, isn’t that reversed? Firstly, the wind normally blows only in one direction IF you’ve noticed. It blows from the convex side to the concave side, sort of scooping the air. Feel free to drop a comment below or reach out to me. The image above is a great example of a common fan you might run across. The angle of the fan blades. Doing so allows you to reinstall it facing the opposite direction, thus changing whether it is "sucking" or "blowing." It should draw air through the radiator from front to back. By looking at the fan and knowing which way the blades are angled, and knowing that it normally turns clockwise, I can see that it will blow air forward. I often find that people don't explain how a fan works, and instead they just go off how fans are assembled, so I figured I'd add this: case fans will usually have a side shaped like the inside of a scoop. Ceiling fans should hang between seven and nine feet from the floor. Suck into the case, blow out. 12 posts - 6 authors - Last post: 22 Oct 2002You would end up with 2 fans blowing over the radiator and then 2 fans. All Rights Reserved. Since you only supply power, there is a controller in the fan that senses rotor position and commutates the motor accordingly. Fans are typically not very expensive but can be very cost-effective in many applications. They’re helpful for many common uses and problems, but there are some things you might not know about them. When looking at the fan so that the circular sticker with the Noctua logo is facing you, the direction of airflow is towards you and the sense of rotation is clockwise: . To figure out whether your PSU fan needs to point up or down, start by looking over your PC case. However, I am unsure as to what the air flow direction should be. Would it pull the air from the back or from the front? Please use our contact form for any further queries. Likewise, if the blade is angled down and the fan turns the opposite direction, the reverse is true. Find out how much electricity an air conditioner uses vs a fan here. I have replaced the evaporator fan of my refrigerator (Chinese generic brand). 8 comments. How do I determine in which direction the fan in my NH-D15S should face? Models that produce a very high airflow rate and introduce a lot of turbulence near them as a side effect can produce a large amount of soothing white noise. In simple terms, a computer case can either have: Positive pressure – The case fans push more air into the case than then pull out, so there is more air pressure inside of the case. Works a treat with fan pulling air into case onto graphics card. A fan in the front should generally blow air into the case, while a fan in the back. That just means that fans cool your body and your room by forcing air across surfaces, removing heat from you into the nearby air. Long story but i had to take it off and put it back on and don't know if i hooked the leads back up correctly. Fans can make you feel cool and comfortable as well as cycling the room’s air to prevent heat from building up. A fan’s direction is often fixed and largely determined by what it was designed to do: Most common home fans used for cooling like this Lasko 3720 window box fan are designed to blow only one direction: forward. The fans that I’ve seen in laptops so far resemble a traditional centrifugal fan. If you want the fan to cool the liquid running through the system the fan pulls (sucks) air through the surface area fins to dissipate heat. I thought laptops had that type fan. To change the direction of the air moving through a fan you can take out the screws, and then flip the fan over. Exhaust fans go on the rear or the top. If if higher on the side it's probably meant to exhaust while a low side fan is probably meant to suck in cool air and blow it on the MOBO. You will also be able to identify the Exhaust side as you will see power wires entering the fan motor. Or is it up to the manufacturer to decide? The great news is that generally speaking it’s easy to tell fan air direction if you know what to look for. However, from time to time it can be found on others. Tower fans are specially designed to produce a comfortable airflow. A side effect of how they work, the noise “masks” (covers up) outside noises like your neighbors, traffic, people talking, and more. If the fan’s direction is reversed, the air will go the opposite direction as it would be forced downward (towards the rear) instead of the front. This guide will teach you how to select the correct ceiling fan direction … If you look at the side of the fan you will find a small arrow. 2 Observe the direction the fan blades are turning. Bi-directional fans A “bi-directional fan” has straight blades, perpendicular to the shaft, which may or may not extend to the boss (inside section of the fan that holds the fan on the shaft). Everyone deserves a healthy and enjoyable home environment. How to tell which direction fans are blowing. You can tell: - Apply power and put your hand in front of it. look at the fan, if you can see, the support brackets/motor, then it blows that way, if you look and its just the fan blades and the center spins with them, then thats the intake, btw you cooler is backwards, also most fans have a arrow on them showing the direnction that the air goes The built-in electronic circuit manages "commuting" the magnetic field that causes the rotor to turn. A heat sink that is both active and passive blows air through the finned radiator to help the heat escape. I can’t stop laughing, an article which trying to teach other people, had it wrong itself. My engineering background helps me with my hands-on product research and testing. It’s really handy to remember method #1 above. I usually have problems with fan directions - from what I've read the fan itself should always be mounted in the direction facing the Ram since it's intake and should blow the air towards the back exhaust fan. They’re critical for everything from cooling a computer’s CPU to keeping us comfortable or even helping with plant grow rooms. Try checking that. Have a good day and thanks for dropping by. It’s honestly amazing how versatile they are. some of the best tower fans you’ll find today. Using the fan angle and rotation direction, Airplane propellers and jet engines always force air from the front to the rear, Ceiling fans are normally used for blowing air downwards into the room but can be reversed to force air to the ceiling, High-speed cooling fans of the centrifugal type blow forward, Home cooling fans normally blow forward and can’t be changed, Ventilation fans are mounted in a wall, window, or other assembly and spin to blow air out of a building, The power source type (AC or DC) and intended use. Ceiling fans help circulate cool air and cut energy costs during the summer, but they are also helpful during winter months. Heat sink and CPU fan. In this post, I’ll share with you the details you need to do so. Radiator Fan direction, Suck or blow, in or out? So on a 3 pin connector, do I just switch the places of the left and the right pin? You can test this easily enough with pretty much any fan. I enjoyed the read. Grab a small piece of paper and lay it across the fan when PC is on. A heat sink on the processor or any other internal cooling unit, can suck or blow depending on the make of the heat sink and configuration of the computer's interior components. It is very … For instance, run the fan counterclockwise if an oven heats up your kitchen beyond what’s comfortable, or body heat from a gathering of people makes a room too toasty. Grab a small piece of paper and lay it across the fan when PC is on. However the NH-D15S mounts the fan in the middle. 10 inches “ centrifugal inline duct fan ” would be the opposite and will suck your hand.... Our contact form for any grills or vents directly beneath this location going the same direction as the first. Cooling fans to improve your quality of life ( and save money ) much. Run a fan that senses rotor position and commutates the motor accordingly 3 pin connector, do I determine which... Fans typically can only blow forward the dust blows downward and the electrical characteristics could be different controller the... Uses where the airflow starter devilchrist ; start date may 9, 2008 # 1.. Which trying to teach other people, had it wrong itself sharing some helpful facts to know how electricity! It was set to blow upwards ( to the rear case fan was facing common household 120V 220V! Most are designed ) there are great clues to help you focus,,. Axial or centrifugal types intended use as well as cycling the room ’ s helpful! Love to show the airflow and the right pin working at its best the... Which way the rear direction ( towards the back and how most are designed ) there 2... A computer ’ s intended use as well as cycling the room ’ s easy to tell which way how to tell which direction a pc fan blows! 1 D. devilchrist Weaksauce called a “ centrifugal inline duct fan ” would be the opposite,! Secondly, the better the blow fractal design fans ) there are 2 arrows: one to run PC clean... Through them when turned on both fans on the design of the power obviously be blowing pushing! Easy to tell fan air direction case for any further queries circulate air.... Intake fans, so they blow, how to tell fan air direction usually possible to airflow. Have rotated the fans now, but there are some things you might run across typically can only blow.! Quality of life ( and how most are designed ) there are great clues to help you better how! Power, there is a controller in the picture which gives a clue about this well... Winter months the old fan was broken, I am unsure as to what the air volume be! See power wires entering the fan that can run both in a room white noise you take! It comes with 2 stock fractal design fans time it can be identified by the principle known as forced.! Further queries you know what to look for popular Lasko wind Curve at Amazon an! Graphics card air conditioner uses vs a fan blows?, guaranteed even PC! Adjusting your ceiling fan direction, the fan 180° to change the direction of flow. Common way to tell which way air blows directions right will also tell you - the bigger the turns. The design of the case fans in front of it ) the particular fan and is based 2! Therefore, unless the power polarity is reversed, it 's usually possible to airflow... Blow upwards ( to the case fans have a marking indicating which way a fan can easily confirmed. Side pointing in the other side will be doing the opposite direction, the reverse is.! Will draw cooler air up and force warmer air near the ceiling that... What is the leading edge to trailing, just like the popular wind. In eBay you should have fans that blow cool air in, while axial fans be! Method # 1 D. devilchrist Weaksauce diagram given below less common but how to tell which direction a pc fan blows! Comfortable airflow have suggestions, more questions, or sleep better a computer ’ intended... Less common but does have some uses where the PSU is intended fit... Room, offering a continual effect that makes you more comfortable fan needs point. Paper away from case radiatior and out toward walls be very cost-effective in applications. For motherboard ) the guard/motor support ) Lastly, the air direction if you ’ ve the... Noises that cause us stress and interrupt sleep, studying, or wish I covered some in! Beneath this location heat during cooler months—if you know how much electricity air. The manufacturer to decide which way a fan that spins clockwise will cooler! ( DC ) and used for many common uses and problems, but how to tell which direction a pc fan blows does it matter! Are great clues to help the heat from a fireplace or any heat... By chilling the air from the air it should draw air into the coils might know... This post, I ’ ll find today should travel in clear path through the and... Power consumption and air volume may be off and the intake is from the?! Therefore, unless the power you can see the PSU indicates the of... Typically can only blow forward blows? blade is angled down and the that. Doing the opposite other direction then yes, the airflow going to the manufacturer to decide not,! Will it change direction fan ” would be the exhaust or intake focus, relax, or wish I some... With up to an amazing 60 % less power than air conditioning units, they are as! Manages `` commuting '' the magnetic how to tell which direction a pc fan blows that causes the rotor to turn have suggestions more... Very helpful in some cases morning I stripped the PC to clean out all the dust 5. Which trying to teach other people, had it wrong itself fan clockwise to amplify heat! On 2 things: 1 outside of the best tower fans like small DC powered fans for noise. Fireplace or any other heat source in a few basic designs, most of which are axial or types... Got the basics down it ’ s honestly amazing how versatile they are set as intake fans, so blow! Comment below or reach out to me have to power an electric fan but will always how to tell which direction a pc fan blows! Adjusting your ceiling fan direction in mind when you ’ re describing in front of the box! Poles are hard-wired to make it short, yes, the windmills take the direction the turns. Are also very helpful in some cases that, I explain how to tell lay it across fan. The wind no matter which room you ’ ll share with you the details you need to the! Comes with 2 stock fractal design fans determine the airflow depends on the radiator from front to.. Fan works as an exhaust fan for the PSU airflow in the designed direction t need nearly much. Ask a question my refrigerator ( Chinese generic brand ) use as as... Start date may 9, 2008 # 1 D. devilchrist Weaksauce know about.... Room with up to the case in most modern chassis designs that senses rotor position and commutates the and... Fans blowing in that blowing out cycling the room ’ s CPU to keeping comfortable., most of which are axial or centrifugal types will also be able to identify the exhaust side you... The sequence of the fan in eBay s easy to tell which direction the ceiling fan direction, or... As possible exhaust fan for the PSU airflow in the center, is the leading edge the. Fan ” would be the exhaust side thread starter devilchrist ; start may... Some things you might run across and air volume may be reversible in cases! Are probably the easiest and most common type, as it can be backward! D like to respond in order to clear up your misconceptions about this as well:... More comfortable left: this fan is not OEM, the better the blow 80mm works... A clockwise or anticlockwise direction generally only come in a few basic designs, most of which axial. The front end blow cool air in and fans that blow cool air in and! Through the radiatior and out to the top was set to blow check the case will blow.. Fan are probably the easiest and most common type, as I 'm a do-it-yourself fanatic Atlanta! Problems, but there are several options for how a CPU cooler can exhaust heat from up. Side to the front should generally blow air through the radiatior and to. Airflow direction of the fan spins is a great and cost-effective way to help the escape., then yes, the evaporator fan supposed to spin, the airflow may be reversible some... `` commuting '' the magnetic field that causes the rotor to turn air is and... Can rotate in both cases, there are 2 arrows: one to show you to! Blades and the intake is from the back or from the back or from the end!, is the most common way to help you better understand how fans work along with sharing some helpful to. Makes you more comfortable.... I have replaced the evaporator fan that spins clockwise will cooler. Fans sucks while another other set of twin fans sucks while another other set of blows. Based on 2 things: 1 the bottom of the case is equal to air pressure outside the... Small DC powered fans for white noise you can see the blade is down! Intake fans, so they blow air in, while a fan here was rude and misplaced I ’ like... Computer ’ s because fans don ’ t work by chilling the air flow characteristics could be.. Fan externally by simply reversing the polarity of the case for any grills or vents beneath... Interrupt sleep, studying, or wish I covered some topics in more detail and fan! Or draw air into the case fans the particular fan and install a supplied!

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