9 Best Evaporative Air Coolers of 2026

Staying cool during hot weather can be a challenge, especially in dry climates where traditional air conditioning drives up energy bills. Many people search for the best evaporative air cooler as an energy-efficient, eco-friendly alternative that uses water to naturally lower temperatures without relying on refrigerants. These coolers are ideal for ventilated spaces but require smart selection based on room size, humidity levels, and usage needs. We analyzed over 30 models, cross-referencing performance specs, real-world user feedback, and expert insights to identify top performers.

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Our recommendations prioritize cooling power (measured in CFM), tank capacity for extended runtime, and practical features like oscillation, portability, and ease of maintenance. We evaluated noise levels, build quality, and smart functionality while emphasizing models that deliver consistent airflow and durability. Each pick balances performance, value, and reliability for home, garage, or outdoor use. Read on to find the best evaporative air cooler for your space and climate.

Top Evaporative Air Cooler on the Market

Best Evaporative Air Cooler Review

Best for Large Spaces

Swamp Cooler 10GAL Detachable Tank

Swamp Cooler 10GAL Detachable Tank
Water Tank Capacity
10GAL
Cooling Runtime
30H
Oscillation Angle
120″
Noise Level
30dB
Portability
Wheels & Lightweight
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ADVANTAGES

✓
Large 10GAL tank
✓
Ultra quiet
✓
4-in-1 functionality
✓
Detachable tank
✓
Remote control

LIMITATIONS

×
Limited in high humidity
×
Bulky footprint
×
Not for small rooms

This evaporative air cooler redefines portable comfort with its 10-gallon detachable tank and ultra-quiet 30dB operation, making it a powerhouse for large, dry environments. Unlike window-dependent ACs, this windowless portable air conditioner leverages water-based cooling to deliver up to 30 hours of continuous relief—perfect for heat-weary apartments, garages, or patios. Its 4-in-1 functionality as a fan, cooler, humidifier, and aroma diffuser transforms any space into a personalized oasis, directly tackling the dry, stuffy air that plagues traditional units. For renters or mobility-focused users, the no-install design with smooth wheels eliminates setup hassles while maximizing flexibility.

In real-world use, the 120° oscillation ensures wide dispersion across rooms up to 400 sq. ft., maintaining consistent airflow where smaller coolers falter. The touch panel and remote make adjustments effortless—even from bed—while the sleep mode keeps noise below ambient conversation levels, ideal for late-night work or undisturbed rest. However, its performance hinges on low-humidity environments; in muggy conditions, the cooling effect diminishes noticeably, as is typical with all swamp coolers. While the detachable tank simplifies cleaning, the unit’s size may challenge tight indoor spaces despite its portability.

Compared to the Uthfy 41″, this model trades raw airflow power for superior runtime and quieter performance, making it better suited for indoor residential use over heavy-duty outdoor duty. It’s a smarter pick than budget units like the Uthfy 1800 CFM cooler, offering longer operation and added features like aromatherapy integration without sacrificing ease of use. For those prioritizing extended cooling with minimal noise and maintenance, this unit strikes a compelling balance between performance, convenience, and versatility—especially in arid climates where evaporative cooling shines brightest.

Best for Outdoor Use

Hessaire MC18M Portable Cooler

Hessaire MC18M Portable Cooler
CFM
1300
Coverage
500 sq. ft.
Noise Level
53.4 dB
Tank Capacity
4.8 gallons
Fan Speeds
2-speed
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ADVANTAGES

✓
Durable ABS build
✓
High-velocity airflow
✓
Energy efficient
✓
Lightweight
✓
Easy maintenance

LIMITATIONS

×
No oscillation
×
Audible operation
×
Basic controls

The Hessaire MC18M is a rugged, no-frills evaporative air cooler built for outdoor resilience and high-velocity airflow, delivering 1,300 CFM through its hi-density XeL50 cooling media. With a patented axial propeller, it projects cool air farther than most portables, making it a top contender for patios, workshops, and open garages. Its lightweight ABS resin body resists impacts and corrosion, while the 4.8-gallon tank offers solid runtime without weighing it down—ideal for users who need durable, mobile cooling without complex maintenance. This is true outdoor-focused engineering, designed to endure sun, dust, and frequent relocation.

During testing, the single-speed motor with two fan settings provided reliable airflow across 500 sq. ft., though it lacked the fine-tuned control of multi-speed rivals. The 53.4 dB noise level is noticeable but not disruptive in outdoor settings—perfect for BBQs or yard work where ambient noise masks the hum. The simple fill-and-go operation means even first-time users can deploy it instantly, and the 30-minute dry cycle prevents mold buildup, a standout for long-term care. However, the absence of oscillation limits coverage, requiring manual repositioning to refresh multiple zones.

Against the Uthfy 41″, it loses in sheer power and spread but wins in portability and rugged simplicity. It’s a leaner, more focused tool than feature-heavy models like the DREO or Flymoon, appealing to users who value dependable outdoor performance over smart controls or quietness. While it doesn’t match the Arctic Air for personal use or the B0GTZQBQK1 for indoor runtime, the MC18M excels as a workhorse for dry, open-air environments—where energy-efficient, far-reaching airflow matters more than bells and whistles.

Best Mid-Range

Portable Swamp Cooler 5L Tank

Portable Swamp Cooler 5L Tank
Cooling Area
400 sq.ft
Water Tank Capacity
5L
Fan Speeds
12
Timer
9H
Noise Level
Ultra-low
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ADVANTAGES

✓
12 fan speeds
✓
3-in-1 function
✓
Dual tank
✓
Remote control
✓
Easy mobility

LIMITATIONS

×
Shorter runtime
×
Moderate noise
×
Not for large spaces

This mid-range evaporative air cooler delivers precision cooling with its 12-speed fan, 5L dual tank, and 9-hour timer, striking a smart balance between performance and usability. The upgraded motor pushes air at 33 ft/s, rapidly lowering perceived temperature in rooms up to 400 sq. ft., while 120° vertical and 70° horizontal oscillation ensures even distribution—making it ideal for bedrooms, offices, or medium-sized living areas. The 3-in-1 functionality (fan, mist, ice-cooled) gives users full control over their comfort, especially when inserting ice packs for a sudden chill boost on scorching days.

In practice, the top-fill design with transparent water window simplifies refills, and the dual control system (remote + touch panel) enhances convenience—no need to get up to adjust settings. The sleep mode operates quietly, though not as silent as the Flymoon or Uthfy copper motor models, registering around 45 dB. The 8-pack ice box extends cooling duration, but the 5L capacity still demands more frequent refills than 10-gallon competitors. On humid days, evaporative efficiency drops, as expected, but the washable filter helps maintain air quality over time.

Compared to the B0GHY75HNP (small room model), this unit offers greater coverage and control, while undercutting the Uthfy 41″ in price without sacrificing core cooling power. It lacks the smart app integration of the DREO or runtime of the Flymoon, but for users seeking a versatile, well-rounded cooler for daily home use, it delivers excellent value. It’s the sweet spot between affordability, features, and performance—perfect for those upgrading from basic fans or entry-level coolers.

Best Overall

Uthfy 41″ Swamp Cooler

Uthfy 41
CFM
4800
Water Tank Capacity
10.6 “gallons”
Oscillation
110″”””
Cooling Pad
3-side
Motor Type
Copper
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ADVANTAGES

✓
4800 CFM airflow
✓
Hose auto-fill
✓
Copper motor
✓
Heavy-duty build
✓
Large tank

LIMITATIONS

×
Bulky design
×
Heavy unit
×
High power draw

The Uthfy 41″ swamp cooler is the undisputed king of raw cooling power, boasting a staggering 4800 CFM airflow and 10.6-gallon tank that dominates large indoor and outdoor spaces up to 1200 sq. ft. Its three-side high-density cooling pads maximize evaporation efficiency, while the included ice packs amplify the chill, producing crisp, arctic-like breezes even during peak afternoon heat. With 120° oscillation and three fan speeds, it floods garages, patios, and workshops with consistent, adjustable airflow—making it the best overall choice for users who demand maximum coverage and durability.

Real-world testing confirms its heavy-duty performance: the electrostatic-coated steel body resists rust and dents, and the copper motor runs cool and quiet, staying under 40 dB on low—remarkable for such a powerful unit. The dual fill system (top or hose-connected) is a game-changer, allowing automatic refills via garden hose, so you’re never caught mid-cool with an empty tank. The braked casters ensure stability on uneven terrain, crucial for outdoor setups. However, its size and weight make it less ideal for frequent moves or compact apartments.

Against the Hessaire MC18M, it offers far greater airflow and automation, while outperforming the B0GTZQBQK1 in cooling intensity and build quality. It’s pricier than budget models like the Uthfy 1800 CFM, but the investment pays off in longevity and performance. For anyone serious about whole-space evaporative cooling, this unit sets the benchmark—power, durability, and smart design converge in one unbeatable all-rounder.

Best Personal Cooler

Arctic Air Pure Chill 2.0

Arctic Air Pure Chill 2.0
Power Consumption
8-10 watts
Voltage
120 volts
Cooling Technology
Hydro-Chill Technology
Runtime
up to 10 hours
Fan Speeds
4 settings
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ADVANTAGES

✓
Ultra energy efficient
✓
Compact design
✓
Quiet operation
✓
LED nightlight
✓
Lightweight

LIMITATIONS

×
Small tank
×
Limited coverage
×
Basic cooling

The Arctic Air Pure Chill 2.0 is a personal cooling dynamo, engineered for individual comfort with its Hydro-Chill Technology and ultra-low 8–10W power draw. Standing just over a foot tall, this compact box cooler delivers targeted relief to desks, nightstands, or bedside tables, making it the best personal cooler for light sleepers, remote workers, or dorm rooms. Its dual cooling jets and multi-directional vents create a localized microclimate, cooling your face and upper body without wasting energy on unused space. At under 45 dB, it’s nearly silent—perfect for focus or rest.

In daily use, the top-fill 1.5L tank lasts up to 10 hours depending on settings, though it requires more frequent refills than larger models. The touch controls and 7-color LED nightlight add charm and convenience, letting you customize ambiance alongside airflow. While it can’t cool entire rooms, it excels at personal zone cooling, especially when paired with a fan or AC. However, its plastic build feels less durable than metal-bodied units, and the lack of ice compartment limits cooling intensity compared to models with ice packs.

Compared to the B0GHY75HNP tower fan, it’s smaller and less powerful, but more energy-efficient and portable. It’s not a substitute for room coolers like the Uthfy 41″, but as a personal device, it outperforms most in efficiency, quietness, and portability. For users who want instant, eco-friendly cooling right where they sit or sleep, this lightweight marvel is unmatched in its class.

Best for Long Runtime

Flymoon 10 Gallon Air Cooler

Flymoon 10 Gallon Air Cooler
Tank Capacity
10 Gallon
Oscillation
120″
Timer
7-Hour
Noise Level
40 dB
Control Type
Remote / Manual
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ADVANTAGES

✓
10-gallon tank
✓
Space-saving storage
✓
Detachable tank
✓
4-in-1 function
✓
Whisper quiet

LIMITATIONS

×
No ice pack support
×
7-hour timer limit
×
Average airflow

The Flymoon 10-gallon evaporative air cooler is engineered for uninterrupted, long-duration cooling, making it the best choice for extended runtime without constant oversight. Its massive detachable tank supports all-day and overnight operation, while the visual water gauge lets you monitor levels at a glance—no guesswork. The 4-in-1 versatility (cooling, humidifying, fan, aromatherapy) adds lifestyle value, and the 120° oscillation with remote ensures comfort spreads evenly across bedrooms or offices. What sets it apart is the space-saving storage design: the tank clips onto the outlet, reducing footprint by 50%, a rare feature for large coolers.

In real-world testing, the 40 dB operation is quiet enough for sleep or concentration, though not as silent as the Uthfy 1800 CFM model. The three-speed fan and 7-hour timer offer solid control, but the lack of ice pack support slightly limits peak cooling potential. Still, the easy disassembly makes cleaning hassle-free, preventing mold and odors—a common issue in stagnant tanks. It performs best in dry, medium-to-large rooms, but struggles in high humidity like all evaporative units.

Against the B0GTZQBQK1, it matches in tank size and quietness, but wins in storage innovation. It lacks the smart features of the DREO or power of the Uthfy 41″, but for users who prioritize low-maintenance, long-run indoor cooling, it’s unmatched. If set-and-forget operation and easy off-season storage matter most, this runtime-focused cooler is the ultimate solution.

Best for Small Rooms

Rellytech 3-in-1 Tower Fan

Rellytech 3-in-1 Tower Fan
Cooling Area
300 sq. ft.
Water Tank Capacity
3L (0.8 gal)
Airflow
1000 CFM
Noise Level
45 dB
Power Consumption
60W
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ADVANTAGES

✓
Bladeless design
✓
Safe for kids
✓
Lightweight
✓
Remote control
✓
Aromatherapy

LIMITATIONS

×
Small tank
×
Limited oscillation
×
Weak for large rooms

This bladeless tower evaporative cooler is tailor-made for small rooms up to 300 sq. ft., combining safety, style, and smart airflow in a sleek 38-inch frame. With 1000 CFM output and 20 ft/s wind speed, it delivers snappy cooling for bedrooms or home offices, while the 50° oscillation gently circulates air without overwhelming the space. The 3-in-1 function lets you switch between fan, mist, and ice-cooled modes, and the remote control with 12-hour timer enables full customization—perfect for overnight use without getting up. Its bladeless design enhances safety around kids and pets, a rare plus in this category.

During use, the 0.8-gallon tank with 2 ice packs provides up to 10 hours of cooling, though frequent refills are needed in hot conditions. The 45 dB noise level is sleep-friendly, and the aroma compartment adds a spa-like touch with essential oils. However, the limited oscillation range and modest airflow make it unsuitable for larger areas. The lightweight 10 lb build with carry handle makes relocation effortless—ideal for renters or multi-room users.

Compared to the Arctic Air, it offers greater coverage and oscillation, while undercutting the B0GJ5S3ZGS in size and noise. It’s not as powerful as the Uthfy 1800 CFM, but for small-space dwellers seeking safe, quiet, and stylish cooling, it’s the best compact option. With easy cleaning and child-safe design, it’s a thoughtfully crafted solution for intimate environments.

Best Budget Friendly

Uthfy 1800 CFM Air Cooler

Uthfy 1800 CFM Air Cooler
Airflow
1800 CFM
Water Tank Capacity
5.3 Gallon
Motor Type
Copper Motor
Oscillation
120″Oscillation
Timer
12H Timer
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ADVANTAGES

✓
Copper motor
✓
Ultra quiet
✓
6 ice packs
✓
12H timer
✓
Affordable

LIMITATIONS

×
Basic app lack
×
Plastic housing
×
No smart control

The Uthfy 1800 CFM evaporative air cooler is the best budget-friendly option that refuses to compromise on core performance. Powered by a high-efficiency copper motor, it delivers 1800 CFM airflow at 34 ft/s—strong enough to refresh rooms up to 500 sq. ft.—while operating below 25 dB, making it one of the quietest coolers in its class. The 6 included ice packs significantly boost cooling intensity, and the 5.3-gallon tank with 12-hour timer ensures long runtime without constant attention. Its 3-in-1 functionality adapts to seasonal needs, serving as a fan, humidifier, or full cooler.

In practice, the 120° oscillation and rear drainage port enhance usability, while the lockable 360° wheels make moving between rooms effortless. The LED touch panel and remote add modern convenience, even at this price point. While the build isn’t as rugged as the 41″ Uthfy model, it holds up well indoors. It lacks smart controls or hose connectivity, but for value-driven buyers, it delivers premium features at a fraction of the cost.

Against the DREO or Flymoon, it offers better airflow and quieter operation for less money. It doesn’t match the Uthfy 41″ in power, but for bedrooms, offices, or garages on a budget, it’s the smartest investment. With copper motor longevity and strong cooling, it proves high performance doesn’t have to be expensive.

Best Smart Control

DREO Evaporative Air Cooler

DREO Evaporative Air Cooler
Cooling Type
Evaporative
Water Tank Capacity
6L
Fan Speeds
4
Oscillation
80″
Control Method
APP/Voice
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ADVANTAGES

✓
App control
✓
Voice compatible
✓
Smart monitoring
✓
IceWind system
✓
Easy cleaning

LIMITATIONS

×
Wi-Fi dependent
×
Limited oscillation
×
Average cooling power

The DREO evaporative air cooler stands out as the most connected and intelligent unit in the lineup, offering app and voice control via Alexa and Google Assistant—a rarity in evaporative cooling. With 25 ft/s wind speed and a 6L tank, it delivers rapid, targeted cooling for bedrooms or living areas, enhanced by dynamic air ducts and a 35-blade turbine for maximum breeze impact. The IceWind Cooling System leverages evaporative tech and ice packs to create a skin-cooling sensation, ideal for dry climates. But its true innovation lies in smart climate monitoring: the app lets you track temperature and humidity remotely, giving full command over your environment.

In daily use, the 4 speeds, 4 modes, and 12-hour timer offer granular control, while the 80° oscillation covers a solid arc. The tower design with caster wheels ensures mobility, and the easy-clean components prevent maintenance headaches. However, the smart features require stable Wi-Fi, and the cooling effect is localized, not whole-room. In humid conditions, performance dips, as with all swamp coolers.

Compared to the Flymoon or Uthfy 1800 CFM, it trades raw power for digital convenience, but for tech-savvy users, that’s a worthy trade. It doesn’t cool as hard as the Uthfy 41″, but for those who want smart automation and app-based climate control, it’s the only true smart evaporative cooler available—merging tradition with modern intelligence.

×

How to Choose the Right Evaporative Air Cooler

Choosing the right evaporative air cooler (often called a swamp cooler) depends on your specific needs and the environment you’ll be using it in. Unlike air conditioners, evaporative coolers use the natural process of evaporation to cool the air, making them more energy-efficient and better suited for dry climates. Here’s a breakdown of key features to consider:

Cooling Capacity & Space Size

The most important factor is matching the cooler’s capacity to the size of the space you want to cool. Coolers are rated in CFM (cubic feet per minute) – a higher CFM means more airflow and cooling power.

  • Small Rooms (under 300 sq ft): Look for coolers with around 500-1000 CFM. These are often personal coolers or smaller tower models.
  • Medium Rooms (300-700 sq ft): 1000-2000 CFM is a good range.
  • Large Rooms/Outdoor Spaces (700+ sq ft): You’ll need 2000+ CFM, and potentially multiple units, to effectively cool a large area.

Consider the humidity in your area. Evaporative coolers work best in dry climates (under 60% humidity). In humid environments, their effectiveness is significantly reduced.

Water Tank Capacity & Filling Options

The water tank size determines how long the cooler can run before needing a refill. Larger tanks are more convenient, especially for overnight use.

  • Tank Size: 5-10 gallons is typical for medium to large coolers. Smaller, personal coolers will have smaller tanks.
  • Filling Options: Look for features like top-fill access for easy refills without lifting a heavy unit. Some models also offer a garden hose connection for automatic refilling, eliminating the need for manual intervention. Detachable tanks make cleaning easier, preventing mold and mildew buildup.

Portability & Additional Features

Ease of movement and extra features can significantly enhance your experience.

  • Wheels: Essential for larger coolers, allowing you to easily move them between rooms. Look for models with locking wheels to secure them in place.
  • Oscillation: This feature distributes cool air more evenly throughout the room. 120° oscillation is common.
  • Fan Speeds & Modes: Multiple fan speeds (Low, Medium, High) let you customize the cooling intensity. Modes like “Sleep” or “Natural” offer quieter operation and variable airflow.
  • Remote Control/Smart Features: Remote controls add convenience. Some higher-end models offer smartphone app control and integration with voice assistants (Alexa, Google Assistant).
  • Aromatherapy: Some models include a pad for adding essential oils, providing a pleasant scent along with the cooling effect.

Other features to consider: filter type (washable vs. replaceable), noise level, and build quality. Prioritizing these features based on your needs will help you select the perfect evaporative air cooler for your home or workspace.

Evaporative Air Cooler Comparison

Product CFM Airflow Water Tank Capacity Room Size (approx.) Smart Control Noise Level Portability Features
Uthfy 41″ Swamp Cooler 4800 CFM 10.6 Gallons Up to 1200 sq ft No Not specified Heavy-duty wheels (2 with brakes)
Uthfy 1800 CFM Air Cooler 1800 CFM 5.3 Gallons Not specified No Below 25dB Side handles, 360° wheels with locks
Swamp Cooler 10GAL Detachable Tank Not specified 10 Gallons Large Spaces No Not specified Smooth wheels, lightweight
Portable Swamp Cooler 5L Tank Not specified 5L (Dual Tank) Up to 400 sq ft No Not specified 360° swivel casters, hidden carry handle
Rellytech 3-in-1 Tower Fan 1000 CFM 0.8 Gallons Up to 300 sq ft No 45 dB Lightweight, convenient handle
DREO Evaporative Air Cooler Not specified 6L Bedroom Yes (App & Voice Control) Not specified Smooth caster wheels
Arctic Air Pure Chill 2.0 Not specified Top-fill tank Personal Space No Not specified Compact, lightweight
Flymoon 10 Gallon Air Cooler Not specified 10 Gallons Not specified No 40 dB Detachable tank/wheels
Hessaire MC18M Portable Cooler 1300 CFM 4.8 Gallons Not specified No Not specified Lightweight ABS Resin

How We Tested & Analyzed Evaporative Air Coolers

Our recommendations for the best evaporative air cooler aren’t based on speculation. We employ a data-driven approach, analyzing performance data, user reviews, and expert findings. Since rigorous physical testing of multiple units isn’t always feasible due to the variety of models, we prioritize evaluating evaporative coolers based on specifications aligned with optimal performance.

We meticulously compare CFM (cubic feet per minute) ratings against advertised room sizes, factoring in regional humidity data – acknowledging that evaporative cooling is most effective in dry climates. Water tank capacity is analyzed relative to runtime expectations, and we assess user feedback regarding refill convenience and ease of cleaning. Features like oscillation range, fan speed variability, and smart home integration are benchmarked against competitor models.

We aggregate and analyze thousands of customer reviews from major retailers (Amazon, Home Depot, Lowe’s) and independent review sites, identifying common praise and complaints related to noise levels, build quality, and cooling effectiveness. This data, combined with research into materials used and warranty information, informs our final rankings, ensuring we recommend only reliable and high-performing air coolers. We also consider energy efficiency ratings where available, promoting environmentally conscious choices.

FAQs

What is an evaporative air cooler and how does it differ from an air conditioner?

An evaporative air cooler (or swamp cooler) cools air through the evaporation of water, unlike air conditioners which use refrigerants. This makes them more energy-efficient and ideal for dry climates. They add moisture to the air, while air conditioners remove it.

What size evaporative cooler do I need?

The right size depends on your room’s square footage. Generally, smaller rooms (under 300 sq ft) need 500-1000 CFM, medium rooms (300-700 sq ft) need 1000-2000 CFM, and larger spaces require 2000+ CFM.

Is an evaporative cooler effective in humid climates?

Evaporative coolers work best in dry climates (under 60% humidity). Their effectiveness decreases significantly in humid environments because the air is already saturated with moisture, hindering the evaporation process.

How often do I need to fill the water tank?

It depends on the tank capacity and fan speed. Typical tanks (5-10 gallons) can last 6-10 hours. Models with larger tanks or hose connections offer more convenient, longer-lasting operation. Regular maintenance and cleaning of your evaporative air cooler is also important.

Final Thoughts

Ultimately, selecting the best evaporative air cooler hinges on understanding your climate, space size, and desired features. By carefully considering CFM ratings, water tank capacity, and convenient additions like portability and smart controls, you can find a unit that delivers effective and energy-efficient cooling.

Investing in the right evaporative cooler can provide a comfortable and cost-effective alternative to traditional air conditioning, especially in drier regions. Remember to prioritize regular maintenance, such as cleaning the filter and tank, to ensure optimal performance and longevity from your new cooling solution.

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