20 Best Silent Cooling Fan [2024]

Are you looking for the best silent cooling fan? Based on expert reviews, we ranked them. We've listed our top-ranked picks, including the top-selling silent cooling fan.

We Recommended:

# Preview Product
1 Dreo Cruiser Pro Tower Fan 90° Oscillating Fans with Remote, Quiet Cooling,12 Modes, 12H Timer,... Dreo Cruiser Pro Tower Fan 90° Oscillating Fans with Remote, Quiet Cooling,12 Modes, 12H Timer,...
2 Tower Fan, 42 Inch Portable Oscillating Quiet Cooling Fan with Remote Controlled, 3 Modes and Speed... Tower Fan, 42 Inch Portable Oscillating Quiet Cooling Fan with Remote Controlled, 3 Modes and...
3 Dreo Cruiser Pro T1 Tower Fan, 42 Inch Quiet Oscillating Bladeless Fan with Remote, 6 Speeds, 3... Dreo Cruiser Pro T1 Tower Fan, 42 Inch Quiet Oscillating Bladeless Fan with Remote, 6 Speeds, 3...
4 Dreo Tower Fan for Bedroom, 42 Inch Bladeless Floor Fan, 90° Oscillating Fan, Quiet Floor Fan with... Dreo Tower Fan for Bedroom, 42 Inch Bladeless Floor Fan, 90° Oscillating Fan, Quiet Floor Fan...
5 PS4 Cooling Fan, PS4 Slim Smart Temperature Control Fan Heat Exhauster Cooler External Ps 4... PS4 Cooling Fan, PS4 Slim Smart Temperature Control Fan Heat Exhauster Cooler External Ps 4...
6 Tower Fan, 36”Oscillating Bladeless Fans with Remote, Quiet Cooling, 3 Modes, Multiple Speed... Tower Fan, 36”Oscillating Bladeless Fans with Remote, Quiet Cooling, 3 Modes, Multiple Speed...
7 AC Infinity AXIAL 1225, Quiet Muffin Fan, 120V AC 120mm x 25mm Low Speed, UL-Certified for DIY... AC Infinity AXIAL 1225, Quiet Muffin Fan, 120V AC 120mm x 25mm Low Speed, UL-Certified for DIY...
8 TRUSTECH Oscillating Tower Fan w/ Remote Control - 43Inch White Quiet Bladeless Whole-Room Cooling... TRUSTECH Oscillating Tower Fan w/ Remote Control - 43Inch White Quiet Bladeless Whole-Room...
9 Honeywell HYF260 Quiet Set Whole Room Tower Fan, White Honeywell HYF260 Quiet Set Whole Room Tower Fan, White
10 Honeywell QuietSet Whole Room Tower Fan-Black, HYF290B Honeywell QuietSet Whole Room Tower Fan-Black, HYF290B
11 Tower Fan, Oscillating Quiet Cooling Fan Tower with LED Display, Timer and Remote, Built-in 3 Modes... Tower Fan, Oscillating Quiet Cooling Fan Tower with LED Display, Timer and Remote, Built-in 3...
12 Seasonic PRIME TX-850, 850W 80+ Titanium, Full Modular, Fan Control in Fanless, Silent, and Cooling... Seasonic PRIME TX-850, 850W 80+ Titanium, Full Modular, Fan Control in Fanless, Silent, and...
13 AC Infinity AXIAL LS1238, Quiet Muffin Fan, 120V AC 120mm x 38mm Low Speed, UL-Certified for DIY... AC Infinity AXIAL LS1238, Quiet Muffin Fan, 120V AC 120mm x 38mm Low Speed, UL-Certified for DIY...
14 50mm Silent Cooling Fan 12V 0.08A 5010 5012 DC Brushless Quiet for 3D Printer PC Computer Case Fan,... 50mm Silent Cooling Fan 12V 0.08A 5010 5012 DC Brushless Quiet for 3D Printer PC Computer Case...
15 Seasonic FOCUS GX-750, 750W 80+ Gold, Full-Modular, Fan Control in Fanless, Silent, and Cooling... Seasonic FOCUS GX-750, 750W 80+ Gold, Full-Modular, Fan Control in Fanless, Silent, and Cooling...
16 GeeekPi Raspberry Pi 4 Fan, Raspberry Pi Cooling Fan 30x30x7mm DC 5V Brushless CPU Cooling Fan with... GeeekPi Raspberry Pi 4 Fan, Raspberry Pi Cooling Fan 30x30x7mm DC 5V Brushless CPU Cooling Fan...
17 Laptop Cooling Pad, Coolertek USB Powered Laptop Cooler, 2 Blue Silent Big Fans, Height Adjustable... Laptop Cooling Pad, Coolertek USB Powered Laptop Cooler, 2 Blue Silent Big Fans, Height...
18 Pinfox 12V DC 120mm Quiet Cooling Fan Silent, Variable Speed Control by 5V to 12V Input, Dual Ball... Pinfox 12V DC 120mm Quiet Cooling Fan Silent, Variable Speed Control by 5V to 12V Input, Dual...
19 AC Infinity AIRPLATE S5, Quiet Cooling Fan System 8' with Speed Control, for Home Theater AV... AC Infinity AIRPLATE S5, Quiet Cooling Fan System 8" with Speed Control, for Home Theater AV...
20 be quiet! Silent Wings 3 120mm, BL064, Cooling Fan be quiet! Silent Wings 3 120mm, BL064, Cooling Fan
SaleBestseller No. 1
Dreo Cruiser Pro Tower Fan 90° Oscillating Fans with Remote, Quiet Cooling,12 Modes, 12H Timer,...
  • Simple Controls: Choose between 4 speeds, 3 modes (Normal, Natural, or Sleep), remotely control the strength and oscillation from your bed or sofa;...
  • Wide & Smooth Oscillation: Perfect 90°oscillating cooling fan allows you to direct airflow where you need. The wide-angle oscillation and long wind...
  • Quiet & Gentle Breeze: This powerful yet silent floor fan is expertly engineered to produce little noise(only 40dB) that won’t disturb your sleep;...
  • Safe & Reliable: ETL-certified bladeless oscillating fan designed with narrow fence to not endanger children; with the steady stand base that resists...
  • Compact & Portable: The quiet, real space saving standing fan can fit into any room corner thanks to the small base and body; move it easily with the...
SaleBestseller No. 2
Tower Fan, 42 Inch Portable Oscillating Quiet Cooling Fan with Remote Controlled, 3 Modes and Speed...
  • 【Meet Your Cooling Needs】Personalize cooling effective with 3 optional airflow mode including Normal, Natural and Sleep, as well as 3 quiet speed...
  • 【Adjustable Size】Unique design of adjustable size, easily switch between 36 and 42 inches without any tools. Ideal for bedroom, livingroom,...
  • 【Enjoy Quiet Cooling】Feature with ultra silent operation, LED display auto off after 30 seconds and widespread oscillation, give you undisturbed...
  • 【Easy to Use】The user-friendly remote control features multiple speed settings, fan modes, oscillation, and a convient 7 hours auto on/off timer...
  • 【Safety for Family】Equipped with narrow fence to protect children from putting fingers in it. The heavy stand base provide protection against...
Bestseller No. 3
Dreo Cruiser Pro T1 Tower Fan, 42 Inch Quiet Oscillating Bladeless Fan with Remote, 6 Speeds, 3...
  • 24ft/s Velocity: This tower fan is equipped with a powerful motor and a unique air-duct that can provide a velocity of 24ft/s, effectively...
  • Lower Noise, More Serenity: This bladeless fan adopts a unique air-duct design with fluid mechanics and minimize noise. Brings a comforting, cool, and...
  • 90° Oscillation Tower Fan: Compared to other 65°oscillating fans, for quicker cooling, ours provides wider coverage of airflow to increase indoor...
  • 6 Speeds plus 3 Modes plus Additional Auto Mode: Customize your breeze with 6 speeds and 3 modes (Normal, Natural, and Sleep). Stay cool on hot summer...
  • Clear LED Display: Track the room temperature, speed, mode and timer settings on the floor fan's large LED display. Easily access all settings via the...
SaleBestseller No. 4
Dreo Tower Fan for Bedroom, 42 Inch Bladeless Floor Fan, 90° Oscillating Fan, Quiet Floor Fan with...
  • 24ft/s Velocity: This oscillating fan effectively distributes ample air circulation to bring airflow to your room faster thanks to its wide 90° angle...
  • Customizable Airflow: This electric fan is powered by 6 wind speeds and 4 modes (Normal, Natural, Sleep and Auto), perfectly customized to meet your...
  • Easy Operation with LED display and Remote: Fitted with a large LED display and customized smart control, this 42 inch floor fan is super easy to...
  • Quiet Cooling Fan: Cruiser Pro T2 Fan is engineered for ultra-quiet and high wind velocity. In Sleep mode, this fan for bedroom automatically reduces...
  • Automatic Mode: By activating the auto mode, the standing fan will automatically increase the wind speed by one gear every time the ambient...
Bestseller No. 5
PS4 Cooling Fan, PS4 Slim Smart Temperature Control Fan Heat Exhauster Cooler External Ps 4...
  • GOOD HEAT DISSIPATION:The PS4 cooling fan product adopts ergonomic design and has a good heat dissipation performance.
  • 3 FAN PORTS:This PS4 slim cooling fan console cooler has 3 fan ports, let your game machine no dust.
  • SILENT WORKING:This Ps 4 controller cooler adopts advanced design eliminates noise to give a quiet heat dissipation, does not affect the game.
  • PROFESSIONALLY DESIGNED:This external temperature control pad for PS4 slim is professionally designed for PS4 Slim host.
  • HIGH QUALITY MATERIAL:This PS4 heat exhauster cooler is made of high quality material enables this cooling fan to work for a very long time.
Bestseller No. 6
Tower Fan, 36”Oscillating Bladeless Fans with Remote, Quiet Cooling, 3 Modes, Multiple Speed...
  • Lower Noise, Better Sleep: This powerful yet silent tower fan brings comforting, cool breeze in an ultra-quiet way (only 45dB!); built-in timer can be...
  • Safe & Reliable: With ETL certification, the standing fan is safe for you and your family to use as the narrow fence protects children and pets, and...
  • 3 Speeds & 3 Styles: Choose between 3 speeds (Low-Medium-High), 3 modes (Normal, Natural, or Sleep), and a 65° oscillation angle to customize your...
  • Simple Controls: Remotely control the strength and oscillation from your bed or sofa; view the room temperature, current mode and speed settings on...
  • Compact & Portable: The tower fan can fit into any room corner thanks to the small base and body; move it easily with the convenient carry handle
Bestseller No. 7
AC Infinity AXIAL 1225, Quiet Muffin Fan, 120V AC 120mm x 25mm Low Speed, UL-Certified for DIY...
  • Designed for projects that requires cooling or ventilation; or as a replacement fan for various products.
  • Includes a heavy-duty aluminum fan with power plug cord, two fan guards, and mounting screw set..
  • UL-certified fan with dual-ball bearings has a lifespan of 67,000 hours. Can be mounted in any direction.
  • 120 x 120 x 25 mm (4.7 x 4.7 x 1 in.) | 100 to 120V AC | Airflow: 51 CFM | Noise: 30 dBA | Speed: 1800 RPM
Bestseller No. 8
TRUSTECH Oscillating Tower Fan w/ Remote Control - 43Inch White Quiet Bladeless Whole-Room Cooling...
  • ❄【Powerful Cooling but Quiet Working】 Don’t miss this quiet bladeless tower fan with remote, or you will be tortured by heatwave all summer...
  • ❄【Widely Cooling for Home Use】 Please don’t just cool one part of your room, the other will envy. With 70° oscillation, this quiet cool tower...
  • ❄【Gentle, Comfortable & Healthy Wind】 Gentle wind will make you feel like in the forest. With bladeless & grid cutting design, the wind was cut...
  • ❄【Intelligent Customization w/ Multiple Settings & 7.5H Timer】 3 modes & 3 speeds for different rooms & needs. Normal mode for usual living...
  • ❄【Slim & Modern Design】 House less modern than your neighbour ‘s? This white cool bladeless tower fan with remote can absolutely help. With...
SaleBestseller No. 9
Honeywell HYF260 Quiet Set Whole Room Tower Fan, White
  • Oscillating remote control tower fan: The Honeywell Quietset tower fan provides powerful whole room cooling with quiet operation, oscillation and...
  • Quiet cooling: Honeywell's QuietSet line of fans are quiet and powerful, so you'll feel the fan's cooling power with less sound
  • Increase your comfort; Using fans for air circulation in your home can help Increase your comfort, and help reduce energy costs as well; Honeywell...
  • Honeywell fans: The right fan helps cool you off and improves airflow in your room or home; Give your air conditioner and wallet a break by using fans...
  • Honeywell quality: Help improve air circulation and energy savings in your home, bedroom or office with Honeywell fans; 5 speed settings to adjust to...
SaleBestseller No. 10
Honeywell QuietSet Whole Room Tower Fan-Black, HYF290B
  • Included Components: Honeywell QuietSet Whole Room Tower Fan - Black, HYF290B.Voltage:100-120 volts.Number of speeds:8
  • Voltage: 100120
  • Perfect for cooling a medium to large size room without taking up much space
SaleBestseller No. 11
Tower Fan, Oscillating Quiet Cooling Fan Tower with LED Display, Timer and Remote, Built-in 3 Modes...
  • CUSTOMIZE YOUR COOLING NEEDS:  This feature-rich oscillating tower fan with remote is designed with 3 fan speeds and 3 operating modes (normal,...
  • CONVENIENT, INTUITIVE LED DISPLAY: Access the LED display from a standing position to adjust mode, timer or speed settings. LED lights power off ...
  • PROGRAMMABLE TIMER AND WIDE OSCILLATION: This tower floor fan operates at very low noise levels, while oscillating to cool a wide area. Save energy...
  • HANDY REMOTE AND COMPACT DESIGN: Easily adjust the settings of this space-saving stand up fan with the powerful remote. Portable for home, RV or...
  • SAFE FOR CHILDREN AND PETS: The no-screw easy assembly means extra safety for kids. And, the tight protective guard ensures children can’t insert...
Bestseller No. 12
Seasonic PRIME TX-850, 850W 80+ Titanium, Full Modular, Fan Control in Fanless, Silent, and Cooling...
  • Micro Tolerance Load Regulation (under 0. 5 %): this impressive electrical performance and stability makes this power supply an ideal choice for...
  • Full modular - use only the cables you need to reduce clutter and improve airflow for a better ventilated system.
  • 80 plus Titanium - less energy gets wasted during power conversion; cut down your electricity usage and be Eco-Friendly.
  • PREMIUM HYBRID FAN CONTROL: Unsurpassed silent performance in Fanless Mode. The fan control button at the back of the power supply allows users to...
  • 12 year worry-free WARRANTY: Our commitment to superior quality.
Bestseller No. 13
AC Infinity AXIAL LS1238, Quiet Muffin Fan, 120V AC 120mm x 38mm Low Speed, UL-Certified for DIY...
  • Designed for projects that requires cooling or ventilation; or as a replacement fan for various products.
  • Includes a heavy-duty aluminum fan with power plug cord, two fan guards, and mounting screw set.
  • UL-certified fan with dual-ball bearings has a lifespan of 67,000 hours. Can be mounted in any direction.
  • Low Speed: Has a lower noise and airflow rating than high speed models of the same size.
  • 120 x 120 x 38 mm (4.7 x 4.7 x 1.5 in.) | 100 to 120V AC | Airflow: 62 CFM | Noise: 32 dBA | Speed: 1800 RPM
Bestseller No. 14
50mm Silent Cooling Fan 12V 0.08A 5010 5012 DC Brushless Quiet for 3D Printer PC Computer Case Fan,...
  • 50x50x12 mm silent cooling fan, 12v, 4200 RPM, 11.89 CFM. They are durable and you don't need to buy another small fan in the next 20,000 hours.
  • Use these 23 dB cooling fans to get near-silent operation. Ideal replacement for noisy or broken 12V 5cm fans in 3D printers, DVD players, DVRs,...
  • Airflow up to 11.89 CFM will provide you with fast cooling.
  • You will need a battery pack/power supply that supplies 12vdc and has a capacity sufficient to provide 80mA to make the fans run. A 2.5mm pitch 2-pin...
  • ▶Please kindly contact our Service Team at icstation (at)hotmail if you have any questions. We provide free replacement and technology supports.
Bestseller No. 15
Seasonic FOCUS GX-750, 750W 80+ Gold, Full-Modular, Fan Control in Fanless, Silent, and Cooling...
  • COMPACT SIZE: 140 MM deep fits ALL ATX systems.
  • FULL MODULAR: Use only the cables you need to reduce clutter to maximize airflow for a better ventilated system.
  • 80 PLUS GOLD: Less energy gets wasted during power conversion; Cut down your electricity usage and be Eco-Friendly.
  • PREMIUM HYBRID FAN CONTROL: Unsurpassed silent performance in Fanless Mode. The fan control button at the back of the power supply allows users to...
  • 10 YEAR WORRY-FREE WARRANTY: Our commitment to superior quality.
Bestseller No. 16
GeeekPi Raspberry Pi 4 Fan, Raspberry Pi Cooling Fan 30x30x7mm DC 5V Brushless CPU Cooling Fan with...
  • Used for Raspberry Pi 4,Pi 3, Pi 2, Pi Model B+ & Retroflag NESPI CASE PLUS
  • The DC 5V cooling fan run smoothly and quietly and it's good for heat dissipation of Raspberry Pi. It can be assembled easily by screws.
  • The aluminum heatsinks has thermal conductive adhesive tape on the back.
  • Package Includes: 4x Cooling Fans, 4x Screw Sets, 12x Heatsinks for Raspberry Pi 3B+, 16x Heatsinks for Raspberry Pi 4 Model B
  • NOTE: Raspberry Pi Not Included
Bestseller No. 17
Laptop Cooling Pad, Coolertek USB Powered Laptop Cooler, 2 Blue Silent Big Fans, Height Adjustable...
  • √ Ultra Durability Laptop Cooler - The high-quality ABS material provides your laptop a wear-resisting and firm laptop carrying surface. Unique...
  • √ Super Cooling & Quiet Fans - Laptop cooling pad with 2 pcs 160mm quiet fans creates a noise-free & interference-free environment for you. The fans...
  • √ Easy Operation & Extra USB Ports - Laptop cooling stand just plug in the USB port of your laptop to use. Equipped two USB 2.0 ports for data...
  • √ Ergonomic Comfort - Two adjustable supporting angles aim to accommodate different users' habits for better human body accommodation. Help you to...
  • √ Compatible Laptop Cooler - The Laptop fan cooling pad compatible with a variety of 11''-17'' laptop, such as Apple Macbook Pro Air, Surface, Acer,...
Bestseller No. 18
Pinfox 12V DC 120mm Quiet Cooling Fan Silent, Variable Speed Control by 5V to 12V Input, Dual Ball...
  • Ultra quiet fan with great volume air flow. Ideal for cooling devices or cabinets that requires minimal noise. In addition, the fan's speed can be...
  • Dual ball bearing allows continuous operation 24/7 without dust and high temperature concern and have a lifespan of 65,000 hours compare to sleeve...
  • Can be used in both two-wire connection and three-wire connection. It is perfect for noise sensitive applications like case cooling, home theater...
  • Airflow: 52CFM | Noise: 18dBA | Speed: 1500RPM | Voltage: 12VDC | Bearings: Dual Ball
  • High quality, and 1 Year Warranty.
Bestseller No. 19
AC Infinity AIRPLATE S5, Quiet Cooling Fan System 8" with Speed Control, for Home Theater AV...
  • An ultra-quiet UL-certified fan system designed for cooling cabinets that requires minimal noise.
  • Features a multi-speed controller to set the fan’s speed to optimal noise and airflow levels.
  • Contains a CNC machined aluminum frame with a modern brushed black finish.
  • Powered by wall outlet or USB port, included Turbo Adapter increases performance by 25%.
  • Dimensions: 8.5 x 4.4 x 1.3 in. | Total Airflow: 52 CFM | Total Noise: 18 dBa | Bearings: Dual Ball
SaleBestseller No. 20
be quiet! Silent Wings 3 120mm, BL064, Cooling Fan
  • Virtually inaudible operation at max. 16.4Db(a). Air flow - 50.5 CFM. Noise level - 16.4 decibels
  • 6-Pole fan motor for less power consumption and vibration
  • Fluid-dynamic bearing enables super-long life span of 300, 000H
  • Fan frame with funnel-shaped air inlets for extremely high air pressure
  • Seven fan blades offer an optimized airflow

Having trouble finding a great silent cooling fan?

This problem is well understood by us because we have gone through the entire silent cooling fan research process ourselves, which is why we have put together a comprehensive list of the best silent cooling fans available in the market today.

After hours of searching and using all the models on the market, we have found the best silent cooling fan for 2023. See our ranking below!

How Do You Buy The Best Silent Cooling Fan?

Do you get stressed out thinking about shopping for a great silent cooling fan? Do doubts keep creeping into your mind?

We understand, because we’ve already gone through the whole process of researching silent cooling fan, which is why we have assembled a comprehensive list of the greatest silent cooling fan available in the current market. We’ve also come up with a list of questions that you probably have yourself.

John Harvards has done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for silent cooling fan that you consider buying. Your questions might include the following:

  • Is it worth buying an silent cooling fan?
  • What benefits are there with buying an silent cooling fan?
  • What factors deserve consideration when shopping for an effective silent cooling fan?
  • Why is it crucial to invest in any silent cooling fan, much less the best one?
  • Which silent cooling fan are good in the current market?
  • Where can you find information like this about silent cooling fan?

We’re convinced that you likely have far more questions than just these regarding silent cooling fan, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for silent cooling fan, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible silent cooling fan. Make sure that you are only using trustworthy and credible websites and sources.

John Harvards provides an silent cooling fan buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information.

How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available silent cooling fan currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

  1. Brand Value: Every brand of silent cooling fan has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
  2. Features: What bells and whistles matter for an silent cooling fan?
  3. Specifications: How powerful they are can be measured.
  4. Product Value: This simply is how much bang for the buck you get from your silent cooling fan.
  5. Customer Ratings: Number ratings grade silent cooling fan objectively.
  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their silent cooling fan.
  7. Product Quality: You don’t always get what you pay for with an silent cooling fan, sometimes less, and sometimes more.
  8. Product Reliability: How sturdy and durable an silent cooling fan is should be an indication of how long it will work out for you.

John Harvards always remembers that maintaining silent cooling fan information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

If you think that anything we present here regarding silent cooling fan is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly!

Related Post:

FAQ:

Q: What is the most quiet fan?

A: The Rowenta VU2531 rates at the top of our list for the best quiet fans with good reason. At a maximum noise level of 55 dB (about the background noise of a quiet suburb), the Rowenta VU2531 is a nice and quiet fan that even the fussiest of sleepers won’t have a problem with.

Q: Who makes the quietest fan?

A: – BEST OVERALL: Lasko Portable Electric 42″ Oscillating Tower Fan – RUNNER UP: TaoTronics Tower Fan 35” 65°Oscillating Cooling Fan – BEST BUDGET: Honeywell HT-900 TurboForce Air Circulator Fan – BEST UPGRADE: Dyson Air Multiplier AM06 Table Fan – BEST PEDESTAL: Honeywell Advanced Quietset with Noise Reduction Fan

Q: What is the best Quiet fan for bedroom?

A: Tabletop fans provide portable air circulation for optimal sleeping conditions. … Tower fans stand on the floor and tend to be larger than tabletop fans,although they are lightweight enough to allow portability from room to room. … Pedestal fans also stand on the floor,but their shape resembles a circular fan unit atop a vertical pole. …

Q: What are the quietest PC fans?

A: Virtually inaudible operation at 16.4 dB (A) 3pin fan 6-pole fan motor with three phases giving less vibration Advanced fluid-dynamic bearing (FDB) enables a long fan life Seven fan blades with optimised surface structures ensure excellent airflow The rubberised fan frame producing extremely high air pressure