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Portable Swamp Coolers

10 Best Portable Swamp Coolers 2025 in the United States

#1

Winner

10.0 score

Portacool Apex 4000 (PACA40001A1) – Wi-Fi Enabled High Velocity Portable Evaporative Cooler for 4000 sq. ft. with up to 50-foot Reach, Programable, 55 Gallon Reservoir, Variable Speed

Portacool Apex 4000 (PACA40001A1) – Wi-Fi Enabled High Velocity Portable Evaporative Cooler for 4000 sq. ft. with up to 50-foot Reach, Programable, 55 Gallon Reservoir, Variable Speed

Portacool

10.0 score

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The Portacool Apex 4000 is a powerful portable swamp cooler designed to cool large spaces up to 4000 square feet, making it suitable for big indoor or semi-outdoor areas like warehouses or large patios. Its 55-gallon water tank allows it to run for extended periods without frequent refilling, which is great for continuous use. The cooler uses a strong 36-inch fan that sends a cool breeze up to 50 feet away, providing fast and effective relief from heat. Noise is kept at a moderate 62 decibels, about as loud as a normal conversation—quiet enough to not be too distracting but noticeable in very quiet settings. One standout feature is its Wi-Fi capability and touchscreen controls, allowing you to adjust settings conveniently from your phone or the display panel. This adds modern convenience not always found in swamp coolers.

Rating
10.0
Chosen by1,365
Cooling Capacity
Additional Features

Most important from
3 reviews

Cooling Capacity
Effectively lowers temperature by over 10 degrees in large spaces like barns.
Additional Features
Auto start-up and shut-down features work seamlessly for convenient operation.
#2
9.4 score

Big Ass Fans - Cool-Space 400 - Portable Evaporative Swamp Cooler, 36 Inch Diameter Fan Indoor Outdoor Use Continuous or Fillable 46 Gallon Capacity Variable Speed – Cooling for Warehouses & Workshops

Big Ass Fans - Cool-Space 400 - Portable Evaporative Swamp Cooler, 36 Inch Diameter Fan Indoor Outdoor Use Continuous or Fillable 46 Gallon Capacity Variable Speed – Cooling for Warehouses & Workshops

Big Ass Fans

9.4 score

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The Big Ass Fans Cool-Space 400 is a heavy-duty portable evaporative cooler designed for large indoor or semi-outdoor spaces like workshops, garages, and studios up to about 3,600 square feet. It delivers strong cooling power with a large 36-inch fan that can move between 6,400 and 9,700 cubic feet of air per minute, and it can cool the air by up to 33 degrees depending on conditions. The cooler’s 46-gallon water tank is quite large, allowing it to run for up to 10 hours without needing a refill, which is convenient for extended use. It can also be hooked up to a standard garden hose for continuous water supply, reducing manual refills. The cooling pads are thick and treated to prevent algae and dirt buildup, so maintenance is less frequent and easier.

Rating
9.4
Cooling Capacity
Water Tank Capacity
Portability

Most important from
11 reviews

Cooling Capacity
Delivers powerful airflow that effectively cools large, non-air-conditioned workspaces, making hot environments much more comfortable.
Water Tank Capacity
The large water tank and option to connect to a garden hose greatly reduce the need for frequent refilling during extended use.
Portability
The absence of handles makes moving the unit challenging despite its locking swivel casters, suggesting handles on each side would improve portability.
Noise Level
Operates quietly at lower speeds, though the noise level increases on high settings but remains manageable for its size.
Additional Features
Built with high-quality materials and solid construction, it feels durable and well made for long-term use.
#3
9.1 score

Big Ass Fans - Cool-Space 350 - Portable Evaporative Swamp Cooler, Indoor and Outdoor Use, 16 Gallon Capacity, Variable Speed for Ultimate Cooling in Workshops and Garages

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Big Ass Fans - Cool-Space 350 - Portable Evaporative Swamp Cooler, Indoor and Outdoor Use, 16 Gallon Capacity, Variable Speed for Ultimate Cooling in Workshops and Garages

Big Ass Fans

9.1 score

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The Big Ass Fans Cool-Space 350 is a robust portable swamp cooler designed for large spaces like workshops, garages, and outdoor events. Its standout feature is the large 50-gallon water tank, which allows for extended cooling without frequent refills. The unit covers up to about 2300 square feet, making it suitable for sizable areas that need steady airflow. With variable speed settings and adjustable cooling, you can tailor the airflow to your comfort level, which is handy in different environments.

Rating
9.1
Cooling Capacity
Water Tank Capacity
Portability

Most important from
1 reviews

Cooling Capacity
Delivers a significant temperature drop, cooling spaces by 15 to 20 degrees even in hot environments.
Water Tank Capacity
The large water tank and powerful airflow make it ideal for keeping sizeable workshops comfortably cool.
Portability
The unit’s size and weight require some effort to move, but built-in wheels assist with portability.

Top 10 Best Portable Swamp Coolers 2025 in the United States

#1

Winner

10.0  score
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Portacool

Portacool Apex 4000 (PACA40001A1) – Wi-Fi Enabled High Velocity Portable Evaporative Cooler for 4000 sq. ft. with up to 50-foot Reach, Programable, 55 Gallon Reservoir, Variable Speed

Cooling Capacity: 4000 sq. ft.
Water Tank Capacity: 55 gallons
Portability: 305 lbs, freestanding, large size
Noise Level: 62 dB
Additional Features: Fast cooling, touchscreen, Wi-Fi

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Chosen by 1365 this week

#2
9.4  score
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Big Ass Fans

Big Ass Fans - Cool-Space 400 - Portable Evaporative Swamp Cooler, 36 Inch Diameter Fan Indoor Outdoor Use Continuous or Fillable 46 Gallon Capacity Variable Speed – Cooling for Warehouses & Workshops

Cooling Capacity: Cools air up to 33 degrees
Water Tank Capacity: 46 Gallons
Portability: Portable, locking casters, 270 pounds
Power Consumption: 510 Watts
Noise Level: 61 dB
Additional Features: Auto shutoff, drain plug, 10 speeds

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#3
9.1  score
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Big Ass Fans

Big Ass Fans - Cool-Space 350 - Portable Evaporative Swamp Cooler, Indoor and Outdoor Use, 16 Gallon Capacity, Variable Speed for Ultimate Cooling in Workshops and Garages

Cooling Capacity: 2300 sq ft
Water Tank Capacity: 50 gallons
Portability: Portable with built-in wheel
Noise Level: 69 dB
Additional Features: Adjustable speed, timer, remote

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15% OFF
#4
8.8  score
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Portacool

Portacool Apex 500 (PACA05001A1) – Wi-Fi Enabled High Velocity Portable Evaporative Cooler for 500 sq. ft. with up to 55-foot Reach, Oscillating Louvers, Programable, 13 Gallon Reservoir, Variable Spd

Cooling Capacity: 500 sq. ft.
Water Tank Capacity: 13 Gallons
Portability: Built-in handle, 70 pounds
Power Consumption: 120 Volts
Noise Level: 53 dB
Additional Features: Wi-Fi, digital display, app control

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#5
8.8  score
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Portacool

Portacool PACJS2701A1 Jetstream 270 Portable Evaporative Cooler, Black

Cooling Capacity: 5625 Sq Ft
Portability: Portable
Power Consumption: 115V, 15.2A
Noise Level: 1 Sones
Additional Features: Freestanding, Button controls, USA

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10% OFF
#6
8.2  score
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Hessaire

Hessaire MC37M 3100CFM Evaporative Cooler

Cooling Capacity: 3100 Cubic Feet Per Minute
Water Tank Capacity: 10.3 Gallons
Portability: Portable, 39 lbs, freestanding, wheels
Power Consumption: 115 Volts
Noise Level: 59 dB
Additional Features: Oscillating Louvers, Large Tank, Warranty

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#7
7.6  score
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Portacool

Portacool PACJS2301A1 Jetstream 230 Portable Evaporative Cooler, Black

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#8
7.0  score
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Uthfy

Uthfy 41" Swamp Cooler, 4800 CFM Evaporative Air Cooler with 10.6 Gallon Water Tank, Portable Outdoor Air Conditioner with 3 Ice Pack, 110° Oscillation, 3 Speed for Garage, Yard, Commercial Use

Cooling Capacity: 4800 CFM
Water Tank Capacity: 10.6 gallons
Portability: Built-In 360° Caster Wheels
Noise Level: 45 dB
Additional Features: Auto Fill, 3-Side Cooling, 110° Oscillation

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13% OFF
#9
7.0  score
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AKIRES

AKIRES 8979CFM Portable Swamp Cooler Air Conditioner,57IN Air Cooler for 1730Sq.ft of Space,with Continuous Auto Fill,36-Gal Water Tank,120°Oscillation,5 Ice Packs,Cooling Fan for Outdoor,Garage

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#10
7.0  score
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Hessaire

Portable Swamp Coolers - 1300 CFM MC18M Evaporative Air Cooler with 2-Speed Fan, 53.4 dB - 500 sq. ft. Coverage Evaporative Air Cooler Portable High Velocity Outdoor Cooling Fan by Hessaire - White

Cooling Capacity: 1300 CFM
Water Tank Capacity: 4.8 Gallons
Portability: Wheels
Power Consumption: 82 Watts
Noise Level: 53.4 dB
Additional Features: High-density XeL50 media, 2-speed fan

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Buying Guide for the Best Portable Swamp Coolers

Portable swamp coolers, also known as evaporative coolers, are a great way to cool down your space without the need for traditional air conditioning. They work by drawing in warm air and passing it through water-saturated pads, which cools the air before it is blown out into the room. When choosing a portable swamp cooler, it's important to consider several key specifications to ensure you get the best fit for your needs. Here are the main specs to look at and how to navigate them.
Cooling CapacityCooling capacity is measured in cubic feet per minute (CFM) and indicates how much air the cooler can process and cool in a minute. This spec is crucial because it determines how effectively the cooler can lower the temperature in your space. For small rooms or personal use, a cooler with a lower CFM (around 200-500) is sufficient. For larger rooms or open spaces, you will need a higher CFM (500-2000 or more). To pick the right one, consider the size of the area you want to cool and choose a model with a CFM rating that matches or exceeds the space's requirements.
Water Tank CapacityThe water tank capacity indicates how much water the cooler can hold, which affects how long it can run before needing a refill. This is important because a larger tank means longer cooling times without interruption. Small tanks (up to 2 gallons) are suitable for personal or short-term use, while larger tanks (5-10 gallons or more) are better for extended use or larger areas. Choose a tank size based on how often you are willing to refill it and the duration you need the cooler to run continuously.
PortabilityPortability refers to how easy it is to move the cooler from one place to another. This is important if you plan to use the cooler in different rooms or locations. Look for features like wheels, handles, and a lightweight design. Smaller, more compact models are easier to move but may have lower cooling capacity, while larger models may be more powerful but harder to transport. Consider your mobility needs and how often you will need to move the cooler when making your choice.
Power ConsumptionPower consumption indicates how much electricity the cooler uses, typically measured in watts. This is important for understanding the operating cost and energy efficiency of the cooler. Lower wattage models (50-100 watts) are more energy-efficient and cost-effective, while higher wattage models (200 watts or more) may provide stronger cooling but at a higher energy cost. Choose a model that balances your cooling needs with your desire for energy efficiency.
Noise LevelNoise level is measured in decibels (dB) and indicates how loud the cooler is when operating. This is important if you plan to use the cooler in a bedroom, office, or any other quiet environment. Lower noise levels (below 50 dB) are ideal for maintaining a peaceful atmosphere, while higher noise levels (above 60 dB) may be more suitable for larger, noisier areas. Consider where you will be using the cooler and how sensitive you are to noise when choosing a model.
Additional FeaturesAdditional features can enhance the usability and convenience of the cooler. These may include remote controls, timers, adjustable fan speeds, and air filters. These features are important for customizing your cooling experience and improving air quality. Think about which features are most important to you and how they will improve your overall experience with the cooler. For example, a remote control can be very convenient for adjusting settings from a distance, while an air filter can help reduce allergens and improve air quality.

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