Finding a tower fan that operates quietly enough for restful sleep can be challenging, especially when balancing power and features. The best overall pick, the DREO Tower Fan, offers a blend of ultra-quiet operation with strong airflow and multiple settings. For those seeking a budget-friendly option, the Honeywell QuietSet provides quiet performance with simple controls. The LEVOIT Tower Fan stands out for its high airflow and low noise, making it a favorite for light sleepers. However, many models sacrifice some noise reduction for extra power or features, so understanding your priorities is key. Continue reading for a detailed breakdown of the top contenders and how they compare.
Key Takeaways
- Ultra-quiet operation (around 20dB) is most common among the top picks, but power varies significantly.
- Bladeless designs tend to produce less noise and feel safer for sleep environments.
- Oscillation and remote controls are features that enhance usability without impacting noise levels.
- Price correlates with additional features; the most expensive models often offer better noise reduction.
- Performance tradeoffs mean some quiet fans have lower airflow, which might not suit very hot rooms.
More Details on Our Top Picks
DREO Tower Fan for Bedroom, 28 ft/s, 20dB Quiet Oscillating Bladeless Fan with Remote, 9 Speeds, 4 Modes, 12H Timer, LED Display, Standing Floor Fan Powerful for Indoor Home Office Room, 42 Inch
This model stands out for its combination of high airflow, ultra-quiet operation, and extensive customization options. Its 1580RPM DC motor delivers a robust 28 ft/s speed, outperforming many competitors like the LEVOIT fan, while maintaining a noise level of just 20dB—ideal for sleep. The 9 speeds and 4 modes, including Sleep and Turbo, make it adaptable for any environment, from a quiet bedroom to a busy home office. The 12-hour timer and dimmable display enhance convenience without disturbing sleep. Compared with the LEVOIT’s fewer speeds, this fan offers more precise control, but the tradeoff is a slightly larger footprint and higher price point. It’s perfect for users who want powerful airflow with minimal noise and maximum flexibility.
Pros:- Exceptional airflow with up to 1473 CFM
- Whisper-quiet at 20dB perfect for sleep
- Multiple speeds and modes for tailored comfort
- Dimmable display for dark rooms
Cons:- Larger size may be less suitable for small rooms
- Higher price compared to simpler fans
Best for: Users seeking a powerful, customizable fan that excels in quiet operation and room coverage.
Not ideal for: Small spaces or budget-conscious buyers who prefer simpler, less expensive models.
- Airflow Capacity:1473 CFM
- Noise Level:20dB
- Number of Speeds:9
- Modes:4
- Timer:12H
- Oscillation:90° wide-angle
- Remote Control:Yes
- Display:LED, auto-dims
- Height:42 inches
Bottom line: This fan is best suited for those who prioritize airflow power, quiet operation, and detailed control for sleep and daily comfort.
LEVOIT Tower Fan for Bedroom, 90° Oscillating Standing Fan with 28dB Quiet for Sleep, 25ft/s Velocity, 12H Timer, 5 Speeds 4 Modes, Remoter, Bladeless Room Fan for Home, Office, Indoor, 36 inch, White
Compared to more powerful fans like the DREO model, the LEVOIT offers a quieter experience at just 28dB, making it ideal for bedrooms and sleep environments. Its 25ft/s speed and 1044 CFM airflow provide ample cooling, especially with 90° oscillation covering large areas. The inclusion of smart temperature sensors and auto mode ensures the fan adjusts airflow based on room conditions, reducing the need for manual tweaks. Its 5 speeds and multiple modes, including Sleep, make it versatile for everyday use. While it’s slightly less powerful than the DREO fan, it compensates with quieter operation and smart features, though some may find the airflow less aggressive. This pick makes the most sense for those who want a balance of quietness, intelligent control, and energy efficiency.
Pros:- Very quiet at 28dB ideal for sleep
- Smart temperature sensor adapts airflow
- Multiple modes including Sleep and Auto
- Wide 90° oscillation for large coverage
Cons:- Less powerful than high-velocity fans
- Higher price point for smart features
Best for: Sleep-focused users wanting a quieter, sensor-driven fan with good room coverage.
Not ideal for: Users needing maximum airflow or power for very hot or large spaces.
- Airflow Capacity:1044 CFM
- Noise Level:28dB
- Number of Speeds:5
- Modes:4
- Timer:12H
- Oscillation:90°
- Remote Control:Yes
- Sensor Technology:Temperature-based
- Height:36 inches
Bottom line: Best suited for sleepers who prioritize silence and smart control over raw airflow power.
DREO Tower Fan for Bedroom, 90° Oscillating Standing Fans for Room with 4 Speeds, 3 Modes, 28dB Quiet for Sleep, 26ft/s Velocity, 8H Timer, Remote, Living Room, Office, Home, Black
This model offers a good balance between quiet operation at 28dB and sufficient airflow with a 26ft/s speed, making it suitable for light sleepers and small to medium rooms. Its 4 speeds and 3 modes—including Sleep mode—help customize airflow without noise disruption. The 8-hour timer and remote control add convenience. Compared to the DREO high-velocity fan, this version’s slightly lower airflow and fewer modes make it less aggressive but more suitable for sleep environments where noise reduction is essential. Its 90° oscillation ensures decent room coverage, but its slightly smaller size and fewer modes may limit use in larger or more demanding spaces. This fan is ideal for users who want quiet, effective airflow for sleeping or quiet working environments.
Pros:- Quiet operation at 28dB
- Multiple modes including Sleep
- Remote control for easy adjustments
- Compact and sleek design
Cons:- Fewer modes than higher-end models
- Moderate airflow may be insufficient for very hot days
Best for: Light sleepers and small to medium rooms needing quiet, adjustable airflow.
Not ideal for: Large or highly hot spaces requiring maximum cooling power.
- Airflow Capacity:up to 33ft
- Noise Level:28dB
- Number of Speeds:4
- Modes:3
- Timer:8H
- Oscillation:90°
- Remote Control:Yes
- Velocity:26ft/s
- Height:36 inches
Bottom line: Ideal for users seeking a quiet, reliable fan that improves sleep comfort without sacrificing airflow.
DREO Tower Fan for Bedroom, 25ft/s Velocity Quiet Floor Fan, 90° Oscillating Fans for Indoors with 4 Speeds, 4 Modes, 8H Timer, Standing Fans, Bladeless Fan, White (DR-HTF007)
This model excels in delivering brisk airflow at 25ft/s with a 45dB noise level, making it suitable for larger rooms that need quick cooling without excessive noise. Its 4 modes and 4 speeds provide flexible airflow options, while the 8-hour timer offers sleep convenience. The bladeless design minimizes noise and enhances safety, especially for households with children. Compared to models like the Honeywell QuietSet, this fan emphasizes higher velocity over ultra-quiet operation, making it ideal for those who want fast cooling but still need to keep noise at a moderate level. Its 90° oscillation ensures broad room coverage. It’s best for users who want strong airflow with quiet, safe operation in medium to large spaces.
Pros:- High velocity at 25ft/s
- Bladeless, safe for children
- Quiet at 45dB
- Multi-mode and speed options
Cons:- Less silent than models with 20dB operation
- Bulkier for small spaces
Best for: Large rooms or users who prioritize high airflow and safety with moderate noise levels.
Not ideal for: Small bedrooms or quiet environments where minimal noise is critical.
- Airflow Speed:25ft/s
- Noise Level:45dB
- Number of Speeds:4
- Modes:4
- Timer:8H
- Oscillation:90°
- Blade Material:Bladeless
- Height:36 inches
- Velocity:25ft/s
Bottom line: Best for those needing rapid, broad cooling in larger rooms without overwhelming noise.
Honeywell QuietSet Personal Table Fan, Oscillating Personal Desk Fan with Quiet Operation, 4 Levels of Power and Sound, Black, HTF210B
This compact fan is designed primarily for personal use, with a small footprint and quiet operation at 45dB, making it perfect for desks or bedside tables. Its four power and sound levels allow fine-tuning for individual comfort, providing enough airflow without disturbing sleep or work. While it doesn’t match the high airflow of larger tower fans like the DREO or LEVOIT models, its portability and noise level make it ideal for focused spaces. The oscillation feature broadens its coverage slightly, but it’s best suited for small areas rather than whole rooms. It’s a solid choice for users who want quiet, personal cooling without taking up much space.
Pros:- Very quiet at 45dB
- Compact and portable
- Adjustable power and sound levels
- Oscillates for wider coverage
Cons:- Limited airflow for large spaces
- Not suitable as a primary room fan
Best for: Individuals needing a quiet, space-saving fan for desks or bedside use.
Not ideal for: Large rooms or spaces requiring significant airflow coverage.
- Noise Level:45dB
- Number of Power Levels:4
- Oscillation:Yes
- Control:Button
- Size:13 inches
- Weight:2 pounds
- Operation Mode:Manual
Bottom line: Ideal for personal cooling in small spaces where quiet operation is a priority.
DREO Tower Fan for Bedroom, 2026 Upgraded DC Motor, 28ft/s High Velocity, 20dB Ultra Quiet Standing Fan, 8 Speeds 4 Modes, 90° Oscillating Bladeless Fan for Indoors, Floor Fans with Remote, Black
This DREO model stands out for its impressive combination of high airflow and ultra-quiet performance, thanks to its upgraded brushless DC motor and TurboWind technology. Compared with the LEVOIT, which is quieter but less powerful, this fan offers stronger airflow up to 28 ft/sec, making it ideal for larger bedrooms or spaces needing more circulation. Its 20dB noise level ensures sleep isn’t disturbed, but the powerful wind can be felt even at lower speeds, which might be less suitable for light sleepers. The 8 speeds and 4 modes provide excellent customization, and the 90° oscillation helps distribute air evenly. The removable grille simplifies cleaning, but the motor noise increases slightly at higher speeds, and the remote control has a snug fit, which can be inconvenient. Overall, this pick is perfect for those who want a balance of power and quiet for sleep and daytime comfort.
Pros:- Very quiet at 20dB, suitable for sleeping
- Powerful airflow up to 28 ft/sec
- Multiple modes and speeds for customized comfort
- Easy to clean with removable grille
Cons:- Motor noise increases at higher speeds, possibly disturbing delicate sleepers
- Remote control fits tightly into the unit, which can be inconvenient
Best for: Buyers seeking a quiet, powerful fan for large bedrooms or living areas that prioritizes airflow and noise reduction.
Not ideal for: Light sleepers who prefer a fan with fewer speeds or less wind intensity, or those who dislike slight motor noise at high speeds.
- Noise Level:20 dB
- Air Flow Capacity:1408 CFM
- Speeds:8
- Oscillation:90°
- Motor Type:brushless DC
- Power:42 watts
- Size:36 inch
Bottom line: This fan is best suited for those who need robust airflow without sacrificing quietness, especially in larger rooms.
LEVOIT Classic 42-inch Tower Fan for Home, 1472 CFM Powerful Fan, 22dB Quiet as You Sleep, 90° L&R Oscillation, 60° U&D Airflow, 12H Timer, 5-Speed and 4 Modes with Temperature Sensor, Remote Control
This LEVOIT model makes the list for its combination of quiet operation and comprehensive feature set, including a temperature sensor and multiple modes. Compared to the DREO, it offers a quieter noise level of just 22dB, making it ideal for undisturbed sleep, but its airflow, while strong at 1472 CFM, isn’t as intense as the upgraded DREO’s. The 90° oscillation ensures wide coverage, and the remote control adds convenience, while the smart sensor adjusts fan speed based on room temperature for energy efficiency. However, its auto mode can cause the fan to cycle frequently, creating minor turbulence and noise. The 5-speed options and timer give good flexibility, but the fan’s size and weight are less portable. This fan is perfect for users wanting quiet operation with smart control and minimal disturbance during sleep.
Pros:- Very quiet at 22dB, ideal for sleep
- Includes smart temperature sensor for automatic adjustments
- Wide 90° oscillation for full room coverage
- Multiple modes and timer enhance usability
Cons:- Auto mode can cause rapid cycling, leading to turbulence
- Auto adjustment may be distracting for some sleepers
Best for: Buyers who prioritize quiet, intelligent climate control and sleep-friendly features in a large, stylish tower fan.
Not ideal for: Those seeking the most powerful airflow or a fan with more aggressive cooling capabilities for very hot rooms.
- Noise Level:22 dB
- Air Flow Capacity:1472 CFM
- Speeds:5
- Oscillation:90°
- Modes:4
- Timer:12H
- Size:42 inch
Bottom line: Best suited for users wanting a quiet, intelligent fan that adapts to room temperature for all-night comfort.
DREO Tower Fan for Bedroom, Upgraded DC 9 Speeds 20dB Ultra-Quiet Floor Fan, 90° Oscillating Fans with 28ft/s Velocity, 12H Timer, Standing Fan, Bladeless Fan Powerful for Home Office Room
This DREO model makes the list by offering the highest number of speeds—9 in total—and a powerful airflow suitable for large rooms or offices. Compared with the basic DREO model, this upgraded version provides more granular control and slightly increased noise at maximum speeds but remains impressively quiet at 20dB, thanks to its TurboSilent technology. Its bladeless, oscillating design ensures even distribution of air and less turbulence, making it a good choice for sleep. The 90° oscillation covers a wide area, and with a 12-hour timer, it offers flexible scheduling. However, the higher speeds produce more noticeable motor noise, and the remote can be a little bulky. It’s ideal for users who need strong, customizable airflow without sacrificing sleep comfort.
Pros:- Nine adjustable speeds for precise control
- Very quiet at 20dB even at high speeds
- Powerful airflow suitable for large areas
- Oscillates 90° for broad coverage
Cons:- Motor noise increases at maximum speeds, which may disturb sensitive sleepers
- Remote control is somewhat bulky and may be less convenient
Best for: Buyers looking for a highly customizable, powerful fan for large rooms that still maintains quiet operation during sleep.
Not ideal for: Those sensitive to higher motor noise at maximum speeds or those with small spaces where less airflow is sufficient.
- Noise Level:20 dB
- Air Flow Capacity:1397 CFM
- Speeds:9
- Oscillation:90°
- Modes:4
- Timer:12H
- Size:42 inch
Bottom line: Ideal for users needing high airflow in large spaces while still enjoying quiet sleep conditions.
Amazon Basics 28″ 60-Degree Oscillating Tower Fan with Powerful Airflow for Bedroom, Living Room, Office, 3 Speeds, Mechanical Control, Air Circulator, 35W, 27.8″H x 9.4″D x 9.4″W, Black
This Amazon Basics tower fan offers a straightforward, budget-friendly option for effective airflow, making it suitable for small to medium rooms. Its 3 speeds and oscillation up to 60° provide decent coverage, and the mechanical controls are intuitive for quick adjustments. Compared to more advanced models like the LEVOIT or DREO, it lacks smart features and has a slightly noisier operation at higher speeds, but it remains quiet enough for most users. The compact size fits well into tight spaces, and the manual controls reduce complexity. Its simplicity is a strength for those who want reliable cooling without extra bells and whistles, but it may not satisfy those needing precise control or ultra-quiet operation for sleep environments.
Pros:- Affordable price point
- Reliable oscillation and airflow coverage
- Simple mechanical controls for ease of use
- Compact dimensions fit small spaces
Cons:- Lacks smart or remote control features
- Higher speeds produce more noise, less ideal for sensitive sleepers
Best for: Buyers seeking an affordable, basic oscillating tower fan for smaller rooms or as a secondary fan.
Not ideal for: Users who want quiet operation for sleep or smart features for automatic adjustments.
- Noise Level:not specified
- Air Flow Capacity:not specified
- Speeds:3
- Oscillation:60°
- Control Type:mechanical
- Size:28 inch
- Power:35W
Bottom line: A solid budget option for basic cooling needs in smaller spaces or as supplementary airflow.
DR.PREPARE Tower Fan for Bedroom, 25 dB Quiet DC Bladeless Fan with Remote, 8 Speeds, 1-8H Timer, 80° Oscillating Fans for Indoors, 16 Inch Portable Desk Table Fans for Room, Home, Office
This DR.PREPARE tower fan stands out for its exceptional combination of ultra-quiet operation—down to just 25 dB—and powerful airflow, making it ideal for light sleepers. Compared to models like the LEVOIT tower fan, which offers similar quietness but slightly less adjustable speed range, this fan’s 8 speeds and oscillation ensure adaptable comfort. Its DC motor outperforms traditional AC motors by maintaining quiet operation over long periods, making it a perfect choice for bedrooms or offices. However, the remote range is limited to about 3 feet, which may be inconvenient for some users. The touch controls are intuitive, and the 1-8 hour timer adds convenience, while the bladeless design simplifies cleaning. The fan’s portability and oscillation make it versatile for various small to medium rooms. The main tradeoff is the limited remote distance, which might frustrate those who prefer to control from across the room.
Pros:- Extremely low noise level of just 25 dB, ideal for sleep.
- Eight adjustable speeds and oscillation for versatile comfort.
- Efficient DC motor ensures long-term quiet operation.
Cons:- Remote control has a limited range of about 3 feet, which may be restrictive.
- Compact size may not provide enough airflow for larger rooms.
Best for: Light sleepers or anyone needing a quiet, adjustable fan for bedroom or home office use.
Not ideal for: Users requiring a high airflow across large spaces or with limited remote control range.
- Noise Level:25 Decibels
- Number of Speeds:8
- Timer:1-8 hours
- Oscillation:80°
- Motor Type:DC
- Size:16 Inch
Bottom line: This fan is perfect for sleepers and light room users who prioritize quiet operation and adjustable airflow in small spaces.
DREO Tower Fan for Bedroom, 90° Oscillating Fans that Blow Cold Air, 5 Speeds, 4 Modes with 26ft/s Velocity, 12H & 28dB Quiet Timer, Remote, Touch, 40″ Standing Floor Fan for Home Office, Black
The DREO tower fan excels in delivering powerful cooling—up to 26 ft/s—while maintaining a remarkably quiet operation at just 28 dB, making it well-suited for sleep environments. Unlike the DR.PREPARE model which is more compact and desk-sized, this 40-inch standing fan provides a broader airflow coverage thanks to its 90° oscillation and long wind curve, ideal for larger bedrooms or living rooms. Its 5 speeds and 4 modes—including sleep and natural modes—offer flexible customization for different comfort needs. The fan’s TurboSilent technology ensures that even at higher speeds, noise remains minimal, supporting undisturbed sleep. Drawbacks include its larger footprint and higher power consumption compared to smaller desk fans. The remote and touch controls are responsive, and the timer adds convenience, but it might be less portable for those with limited space.
Pros:- Strong airflow up to 26 ft/s for effective cooling.
- Quiet operation at only 28 dB, suitable for sleep.
- Wide 90° oscillation and multiple modes for versatile comfort.
Cons:- Larger size may not fit easily into small or cluttered spaces.
- Higher power usage compared to smaller, desk-sized fans.
Best for: Users needing a larger, high-velocity fan that still operates quietly for bedroom or living room sleep comfort.
Not ideal for: Small room users or those seeking a compact, lightweight desk fan for personal use.
- Noise Level:28 Decibels
- Speeds:5
- Modes:4
- Oscillation:90°
- Velocity:26 ft/s
- Timer:12 hours
- Size:40 inches
Bottom line: This fan is ideal for those who want powerful, wide coverage with minimal noise, especially in larger bedrooms or living areas.
How We Picked
To select the best tower fans for sleep, I focused on key factors that directly impact sleep quality: noise levels, airflow, ease of use, build quality, and energy efficiency. I prioritized models with verified decibel ratings around 20-25dB, as anything above can disturb sleep. Performance in terms of airflow was also critical, especially for larger rooms, but without sacrificing quiet operation. Usability features like remote controls, timers, and oscillation were included to ensure convenience, while build quality and durability influenced long-term satisfaction. The ranking reflects a balance between low noise, effective cooling, and practical features for sleep environments.Factors to Consider When Choosing Best Tower Fan Quiet For Sleep
Choosing a tower fan for sleep involves more than just noise levels. To ensure you select a model that keeps your room comfortable without disrupting rest, consider these key factors. Balancing airflow with quiet operation is crucial, especially in larger bedrooms. Ease of use, including remote controls and timers, can make nighttime adjustments simple. Additionally, design features like bladeless construction reduce noise and increase safety. Price often reflects additional features and build quality, so knowing your budget helps narrow options. Finally, assess room size and your specific needs to find the right fan that offers both power and peace for restful sleep.Noise Levels and Sound Quality
When shopping for a fan for sleep, noise levels are the top priority. Look for models rated around 20-25dB, which are typically whisper-quiet. Some fans advertise low decibels but may produce subtle whirs or humming sounds that can still disturb light sleepers. The sound quality also matters—fans with a constant, smooth airflow tend to be less disruptive than those with fluctuating or rattling noises. Testing or verifying decibel ratings before purchasing can prevent disappointment and ensure your sleep remains undisturbed.
Airflow and Room Size Compatibility
While quiet operation is essential, airflow cannot be sacrificed if you want a comfortable sleeping environment, especially in larger rooms. Fans with adjustable speeds allow you to find a balance—using lower settings for sleep while still circulating enough air. Consider the room size: larger bedrooms usually require higher airflow capacity, but this often means more noise. Models with oscillation help distribute airflow evenly without needing to run at high speeds constantly. Matching fan capacity to your room size prevents overworking the fan and creating unnecessary noise.
Ease of Use and Convenience Features
Features like remote controls, timers, and oscillation make nighttime operation more convenient. Remote controls allow you to adjust settings without getting out of bed, which is especially helpful for maintaining a comfortable sleep environment. Timers help prevent the fan from running all night, reducing energy use and noise levels when you’re asleep. Some models also include sleep modes that automatically reduce noise and airflow, creating a more restful environment. Prioritizing these features can significantly improve your sleep experience without complicating operation.
Design and Safety Considerations
Bladeless designs are increasingly popular for sleep fans because they minimize noise and eliminate sharp blades that could pose safety risks. Compact, sleek designs also reduce clutter and make placement easier. Durability and build quality impact long-term quiet operation; cheaper plastic models may rattle or vibrate over time. If you share your bed with pets or children, safety features like stable bases and rounded edges are worth considering. Investing in a well-built, safe fan can mean fewer disturbances and repairs over time.
Price and Value
Prices vary widely, with premium models offering advanced noise reduction, higher airflow, and extra features. However, paying more doesn’t always guarantee better sleep performance—it’s essential to match features with your actual needs. Budget models often provide adequate quiet operation and basic airflow but might lack remote controls or timers. Consider the long-term value: investing in a slightly more expensive, quieter model can improve sleep quality and reduce frustration. Always compare specifications and reviews to ensure you’re getting the best balance between cost and features.
Frequently Asked Questions
How quiet should a tower fan be for it to not disturb sleep?
A tower fan suitable for sleep typically operates around 20-25dB, which is comparable to a whisper or rustling leaves. Fans at this noise level tend to be unnoticeable or barely perceptible during sleep, especially if they produce a steady, smooth airflow. If a fan exceeds this range, it might produce subtle humming or rattling sounds that can wake light sleepers or interfere with deep sleep. Always check decibel ratings before purchasing to ensure it will meet your quietness needs.
Can I find a fan that is both quiet and powerful enough for large rooms?
Yes, some fans manage to combine high airflow with quiet operation, but they are often more expensive. Look for models with adjustable speeds, high CFM ratings, and sound level specifications around 20-25dB at lower settings. Larger rooms may require higher airflow, which can increase noise, so choosing a fan with a good balance—such as a model with oscillation and variable speeds—is key. In some cases, placing the fan strategically or using multiple fans at lower speeds can achieve the desired cooling without sacrificing quietness.
Are bladeless fans better for sleep than traditional blade fans?
Bladeless fans generally produce less noise and have a smoother airflow, making them a popular choice for sleep environments. They also tend to be safer, especially if you have pets or small children. However, bladeless models can be more expensive and sometimes less powerful in terms of airflow compared to traditional blade fans. For sleep, their quiet operation often outweighs the need for maximum airflow, but if cooling larger spaces is a priority, some traditional fans might still be necessary.
What features should I prioritize if I want a fan mainly for sleeping?
For sleep-focused use, prioritize features like ultra-quiet operation (around 20dB), a sleep mode that reduces noise and airflow, remote control for easy adjustments, and timers to limit runtime. Oscillation is also beneficial for even air distribution without loud fan noise. Ease of setup and simple controls help maintain a peaceful environment, while bladeless design adds an extra layer of safety and quietness. Avoid overly complex features that might increase noise or cause distractions during sleep.
How do I maintain my tower fan to keep it operating quietly?
Regular cleaning of vents and filters can prevent dust buildup, which often causes fans to rattle or vibrate and increases noise. Check for loose parts or screws periodically and tighten them as needed. Replacing or cleaning filters (if applicable) ensures optimal airflow and reduces strain on the motor. Proper placement—on stable, flat surfaces away from walls—also minimizes vibrations and noise. Routine maintenance not only prolongs the fan’s lifespan but also helps maintain its quiet operation over time.
