JavaScript must be enabled in order for you to see "WP Copy Data Protect" effect. However, it seems JavaScript is either disabled or not supported by your browser. To see full result of "WP Copy Data Protector", enable JavaScript by changing your browser options, then try again.

Portable Evaporative Air Cooler


Models Considered


Hours of Research


Experts Interviewed


Consumer Reviews Analyzed

E vaporative or swamp air coolers are perfect for areas with hot, dry climates, where the lack of humidity can affect people’s skin, eyes, and breathing system. These add moisture and cool the air at the same time, using a system of fans and water recipients, to create a comfortable environment.

Some air coolers are even equipped with performant filters that destroy microorganisms such as viruses and germs and neutralize odors and smoke. With a power consumption lower than that of air conditioners, these appliances are a great choice for every household.

7. BASEIN 2019 – Best for Shed

Check Price at Amazon


  • Room size coverage: Small to medium
  • Water tank capacity: N/A
  • Runtime on full tank: 5 hours
  • Speed settings: 3

  • Power draw: N/A
  • Dimensions: 5.8” x 6.4” x 6.7”
  • Weight: 2.1 pounds
  • Warranty: 1 year

This evaporative air cooler from BASEIN is a wonderful choice for parents. It uses bladeless technology, to ensure the airflow, and a safety fence, thus keeping kids safe from sticking their little fingers between the blades and getting hurt. With a practical design that allows removing the ice tank for better cleaning, you won’t have to worry about mold growing on its interior walls.

100% Freon Free

Unlike air conditioners that use chemical refrigerants to lower the temperature in the room, evaporative air coolers only need water, which is transformed into vapors through a completely natural process. Great benefits derive from this eco-friendly technology:

  • No dangerous gases like Freon are released into the air
  • The air is always fresh, as the windows don’t need to be closed
  • Pollutants and microorganisms are removed due to included filtering systems

A full tank will keep BASEIN 2019 going for up to 5 hours and it will stop on itself if you are not around to refill it. All it needs is a power source like a computer, an adaptor or a portable battery to be plugged into its USB port.

Important Features To Remember
  • Dimensions – 5.8 x 6.4 x 6.7 inches
  • Continuous Operation Time – 5 hours
  • Weight – 2.1 pounds
  • Spot Coverage – 3ft-4ft
3 Ultra Quiet Speeds

Adjustability is one BASEIN 2019’ most appealing functions. You can choose between 3 fan speeds and get the temperature and humidity you desire. Furthermore, it runs its operations so quietly, that you will forget it is working. Just select the speed that works best for you:

  • Low – under 26dB – best for baby sleep and nights when you really need your moment of peace
  • Medium – under 49dB – still imperceptible – best speed for long time usage
  • High – under 81dB – for really hot days when the air needs to be chilled rapidly

Small and easy to carry around, you can bring it to picnics and barbecues. It works outside just as well as it does inside. Just set it next to the area you are eating or spending time, and it will use its ample airflow to ensure your family’s comfort.

6. Scinex Personal Air Cooler – Best for Greenhouse

Check Price at Amazon


  • Room size coverage: Medium
  • Water tank capacity: 470 milliliters
  • Runtime on full tank: 7-8 hours
  • Speed settings: 3

  • Power draw: 10 watts
  • Dimensions: 6.7” x 6.7” x 6.9”
  • Weight: 2.8 pounds
  • Warranty: 1 year

If you a looking for a practical and portable solution for long hot summer days, that can also reduce the symptoms caused by low humidity, take a look at Scinex Personal Air Cooler. Specially designed for spot cooling, you can bring it to work and enjoy a refreshing breeze without bothering your coworkers who may prefer a warmer atmosphere.

Only 10W energy consumption

It transforms water into chilly pleasant vapors using a minimum amount of energy, saving you money and keeping the environment safe. A USB port is available and it can be plugged into any power bank like a laptop or a portable battery. Here is what you get for only 10W:

  • 7 LCD color panel – that can be used at night as Night Light
  • A filter – that removes air pollutants and germs
  • Spot Cooling – up to 33 sq. ft. of fresh, cold air
Factors To Consider
  • Dimensions – 12.3 x 8 x 8 inches
  • Weight – 2.4 pounds
  • Room size – Medium
  • Continuous Operation Time – 7-8 hours

It is worthy to mention that this evaporative air cooler can function up to 8 hours with a full tank of water. It comes with an incorporated filter that captures dust particles and bacteria, reducing the level of pollution in your house. Due to its weight of only 2.4 pounds, you can bring it to work or put it in your luggage when traveling. A 1-year warranty is included.

5. Peodelk Mini Evaporative Cooler – Best for RV

Check Price at Amazon


  • Room size coverage: Small to medium
  • Water tank capacity: 400 milliliters
  • Runtime on full tank: 2-4 hours
  • Speed settings: 3

  • Power draw: N/A
  • Dimensions: 8.3” x 5.1” x 5.1”
  • Weight: 2 pounds
  • Warranty: 1 year

If you are looking for an eco-friendly solution to Freon-releasing air conditioners, you should consider this powerful evaporative air cooler. It offers a broad range of options such as fan speed settings, timer, 7 different light colors, or led indicators. With a practical design, that indicates every function clearly and simply, it can be used even by children. No installation required. All you need to do is to fill it with water and plug it in.

3-Wind Power Adjustments

The power button is all you need to operate this air cooler and this is the one you will use when changing the fan speed. Depending on how cold you want the air in your room to be, you can choose to add ice into the water compartment or leave it to run only with water. Using a fan air outlet, a fan air inlet, and 400 ml water recipient, Peodelk Mini Evaporative Cooler will provide you with cold air at 3 different speeds:

  • Tender Wind – for easy, quiet nights
  • Cool Wind – for relaxing days
  • Strong Wind – for hot afternoons

With a weight of only 2 pounds, there shouldn’t be a problem to carry it with you. Now you can cook, watch TV or work in more pleasant conditions. And it comes with a handle that makes it even more practical.

Important Specifications
  • Dimensions – 11.3 x 5.8 x 5.8 inches
  • Weight – 2 pounds
  • Water tank volume – 400 ml
  • Wind Angle Adjustment – 120°
Smart functions included

If your baby is struggling with the fear of the dark or has problems sleeping, 7 soft color choices are here to south him/her. The clear design adds value to this model and enhances its usability. Placed on its top, the buttons and indicators are easy to spot and come with practical descriptions. This air cooler includes:

  • Power Button – that can be used to adjust speeds as well
  • Time Switch – pauses it after 2 or 4 hours
  • Low Water Indicator – lights up when water is running low
  • Led Light – shows that the cooler is working

A 1-year warranty is available for this product and the manufacturer offers to replace it if it comes with any quality problems. Moreover, if you contact them with any problem, they promise to answer in less than 24 hours.

4. AEOSBIK Portable Air Conditioner Fan – Best for the Money

Check Price at Amazon


  • Room size coverage: Small to medium
  • Water tank capacity: 420 milliliters
  • Runtime on full tank: 4-6 hours
  • Speed settings: 3

  • Power draw: 18 watts
  • Dimensions: 5.7” x 3.9” x 9.5”
  • Weight: 2.15 pounds
  • Warranty: 1 year

If you are interested in a powerful, elegant and compact swamp air cooler, that is easy to operate and can be used successfully both indoors and outdoors, this is one of your best choices. Designed to cool only its immediate area, it won’t disturb people around who may prefer other climate conditions. With AEOSBIK Portable Air Conditioner Fan symptoms produced by dry air will be left behind, as it also functions as a humidifier, releasing cool mist in the air.

Only 1.9lbs

If you are on the road a lot or planning to visit a really hot country, where heat exhaustion is a serious issue, carrying a little appliance with you, that can be easily set up in a hotel room is smart. AEOSBIK Portable Air Conditioner won’t take much space in your luggage and you will be able to enjoy its multiple benefits:

  • 100% Freon free – won’t affect the environment
  • Energy Saver – it will help you save money in the long run
  • Lightweight – it weighs only 1.9lbs, thus allowing you to move it without effort

It is perfect for small to medium rooms, kitchens, bedrooms, offices, and if you want to bring it outside it will do well during picnics or camping trips. Just like a fellow that never leaves your side, it will keep you cool and comfortable.

Important Notes
  • Dimensions – 5.7 x 3.9 x 9.5 inches
  • Weight – 1.9 lbs
  • Water tank capacity – 420 ml
  • Continuous Operation Time – 6 hours
Multiple smart functions

A perfect air cooler shouldn’t require too much work from your part to do its job. AEOSBIK Portable Air Conditioner lets you control fan speeds, cooling time and other useful functions through a set of nicely designed buttons and indicators that are available on its top space:

  • Power Button
  • Refrigeration Key
  • Water Level Indicator
  • Speed Adjustment Button

For better cleaning, the water tank is removable and this way you can keep mold away, protecting yourself and your family against dangerous spores. With this air cooler, the air in your house will be fresher than ever, and if you add just a hint of your favorite essential oil, it will turn your room into a sanctuary.

3. COSTWAY 23430-CYPE – Editor’s Choice

Check Price at Amazon


  • Room size coverage: Medium
  • Water tank capacity: 1.6 gallons
  • Runtime on full tank: 8 hours
  • Speed settings: 3

  • Power draw: 75 watts
  • Dimensions: 13.5” x 11” x 25”
  • Weight: 12 pounds
  • Warranty: 90 days

If you need a cooler that can effectively lower the temperature in a medium room, this model from COSTWAY is among the best of its class. With a strong airflow, that can be adjusted, and a 6L water tank, you won’t have to check on it every minute. Summer days can get insufferable when the temperature goes over 96F and the air gets extremely dry. When this happens, COSTWAY 23430-CYPE won’t let you down, as it can turn ice into cold air in minutes.

Wide Angle for Wind Delivery

Its blades can be adjusted to increase the wind blow angle. This way, larger areas can be cooled in a relatively short period. Depending on the weather outside, the level of humidity and temperature, you can use one of the 3 available fan speeds and modes.

  • Low Speed – for Sleeping Mode
  • Medium Speed – for Natural Mode
  • High Speed – for Normal Mode

It allows you to widen the cooling area by swinging the blades automatically on the horizontal or manually on the vertical.

Important Features
  • Dimension – 24.5 x 14.5 x 12 inches
  • Water tank capacity – 6L
  • Power – 75W
  • Continuous Operation Time – 8 hours
Ice Tank Included

For those extra hot moments when air gets almost unbreathable, this air cooler has been equipped with an ice compartment. When functioning on ice, it blows an even colder air, reducing dryness and heat faster. Here are some instructions on how to use this function:

  1. Fill the tank with water
  2. Fill the icebox with water and let it freeze
  3. Put the icebox in its place in the air cooler
  4. Turn on Cool Mode

With a timer included that shuts it off every 8 hours, you won’t have to worry about energy waste. And, despite its larger size, the manufacturer has found a way to increase its portability: universal wheels that help you move it from one place to another without effort.

2. Honeywell 300-412CFM – Best for Garage

Check Price at Amazon


  • Room size coverage: Small to medium
  • Water tank capacity: 2.6 gallons
  • Runtime on full tank: 7.5 hours
  • Speed settings: 3

  • Power draw: 102 watts
  • Dimensions: 15.7” x 13.5” x 31.5”
  • Weight: 18.5 pounds
  • Warranty: 1 year

If you are living in a region where humidity is under 60%, like those in the southwest or Midwest parts of US, this powerful air cooler will help you get the perfect comfort in your house. Energy-efficient, with a power consumption of only 102W, it will prove itself a great acquisition in the years to come. The Activated Carbon Filter keeps the air clean and helps to remove unpleasant smells.

Spot Cooling

Thermal comfort is a subjective question and often family members or coworkers have different opinions when it comes to setting the perfect temperature or humidity level. Small and portable, Honeywell 300-412CFM won’t extend its action outside the area upon you need it to act. Moreover, it comes with many great functions to help you adjust everything just the way you want:

  • 3-Fan Speeds – Low, Medium, High – depending on how fast you need it to do the job
  • Full-Featured Remote control – to adjust fan speed, temperature, and other variables
  • Digital Display – with an attractive design, will help you choose the values you want

Its compact design allows you to carry it around. Set it next to your couch or on your desk, it will blow its refreshing, moist air around you, and it won’t even make a lot of noise.

Factors To Consider
  • Dimensions – 15.7 x 13.5 x 31.5 inches
  • Continuous Operation Time – 7.5 hours
  • Water Tank Size – 2.6 gallons
  • Weight – 18.5 pounds
Active Carbon Filter

A big plus when it comes to this air cooler is the included Active Carbon Filter, a feature that turns it into a purifier as well. The filter is washable and easy to maintain and will remove from your room unwanted and possibly dangerous airborne particles like:

  • Pollen
  • Dust
  • Germs
  • Bacteria
  • Viruses

It will also neutralize odors produced by cooking or Tabaco. The water recipient can be removed, thus allowing a thorough cleaning which is essential to prevent mold and resistant bacteria to set in.

1. Honeywell 525-729CFM – Best Overall

Check Price at Amazon


  • Room size coverage: Small to medium
  • Water tank capacity: 7.9 gallons
  • Runtime on full tank: 7.5 hours
  • Speed settings: 3

  • Power draw: 288 watts
  • Dimensions: 18” x 13.9” x 33.7”
  • Weight: 24.9 pounds
  • Warranty: 1 year

If you are looking for an air cooler, a humidifier, and a fan, all in one product, Honeywell 525-729CFM has them all. With a strong structure and built of water-resistant materials, you can use it outside, when you have friends over at a barbecue, or at family gatherings. And if the atmosphere gets really hot, its ice compartment will save you by turning the cold breeze into an even colder one.

Practical Design

Assembling and operating it is easy, due to its multiple integrated functions. In fact, all you have to do is to remove it from its box and plug it in. The included remote control will help you set things up. It comes with:

  • Timer – that will help you save energy by pausing it at certain intervals of time
  • Low Water Alarm – will let you know when the tank needs to be refilled
  • Humidification Knob – that allows you to set the level of humidity

Able to produce a powerful airflow of 525 to 729 CFM, it is ideal for extra hot climates, where humidity often falls under 60%. Moreover, it includes an ice tank to be used in extra hot days.

Buying Guide
  • Water Tank Size – 7.9 gallons
  • Dimensions – 18 x 13.9 x 33.7 inches
  • Continuous Operation Time – 7.5 hours
  • Airflow – 525-729 CFM
UV-Resistant Materials

If patio parties and barbecues are your things, now it’s time to stop worrying about those high summer temperatures. This powerful machine does great outside. Your guests will enjoy a fresh breeze that will remember them of those childhood days spent at the lake. Built of resistant materials and water-resistant, it can be used in:

  • Gardens
  • Patio
  • Office Warehouses
  • Outdoor Restaurants

With a power consumption of only 288W, it is incredibly efficient and a true money saver. And there’s no need to store it during the winter, as it can perfectly be used as a humidifier in the cold months.

Top 7 Comparison

Photo Products Price
Honeywell 525-729CFM Image
Best Overall
1. Honeywell 525-729CFM
  • Room size: Small to medium
  • Speed settings: 3
  • Runtime: 7.5 hours
  • Features: Low water alarm; Detachable water tank; Top ice compartment
  • Dimensions: 18” x 13.9” x 33.7”
  • Weight: 24.9 lbs.
  • Warranty: 1 year
Check Price at Amazon
Honeywell 300-412CFM Image
Best for Garage
2. Honeywell 300-412CFM
  • Room size: Small to medium
  • Speed settings: 3
  • Runtime: 7.5 hours
  • Features: Low water alarm; Timer; Ice compartment
  • Dimensions: 15.7” x 13.5” x 31.5”
  • Weight: 18.5 lbs.
  • Warranty: 1 year
Check Price at Amazon
COSTWAY 23430-CYPE Image
Editor’s Choice
  • Room size: Medium
  • Speed settings: 3
  • Runtime: 8 hours
  • Features: 7.5-hour timer; Caster wheels; Anion generator; Swing; LED control panel
  • Dimensions: 13.5” x 11” x 25”
  • Weight: 12 lbs.
  • Warranty: 90 days
Check Price at Amazon
AEOSBIK Portable Air Conditioner Fan Image
Best for the Money
4. AEOSBIK Portable Air Conditioner Fan
  • Room size: Small to medium
  • Speed settings: 3
  • Runtime: 4-6 hours
  • Features: 120° angle adjustment fan air outlet; Water tank lock; Water level indicator; Refrigeration key
  • Dimensions: 5.7” x 3.9” x 9.5”
  • Weight: 2.15 lbs.
  • Warranty: 1 year
Check Price at Amazon
Peodelk Mini Evaporative Cooler Image
Best for RV
5. Peodelk Mini Evaporative Cooler
  • Room size: Small to medium
  • Speed settings: 3
  • Runtime: 2-4 hours
  • Features: 120° wind angle adjustment; Low water level indicator; LED light indicator; 7 color light options; Timer; Portable handle
  • Dimensions: 8.3” x 5.1” x 5.1”
  • Weight: 2 lbs.
  • Warranty: 1 year
Check Price at Amazon
Scinex Personal Air Cooler Image
Best for Greenhouse
6. Scinex Personal Air Cooler
  • Room size: Medium
  • Speed settings: 3
  • Runtime: 7-8 hours
  • Features: 7-color LED nightlight; USB port; Ice Cellar
  • Dimensions: 6.7” x 6.7” x 6.9”
  • Weight: 2.8 lbs.
  • Warranty: 1 year
Check Price at Amazon
BASEIN 2019 Image
Best for Shed
7. BASEIN 2019
  • Room size: Small to medium
  • Speed settings: 3
  • Runtime: 5 hours
  • Features: 7-color LED light; Freon-free; Mode indicator lights; Bladeless design
  • Dimensions: 5.8” x 6.4” x 6.7”
  • Weight: 2.1 lbs.
  • Warranty: 1 year
Check Price at Amazon

How Does It Work

Whether you choose a portable swamp cooler or a large one that can chill your entire house, it is important to understand how it works, as some variables need to be taken into consideration. For example, if you place it in an area that isn’t well ventilated, you might end up with a house filled with mold and mildew. However, if used properly, this device can bring real benefits and reduce symptoms that are usually associated with dry air.

Knowing how it works, you can make a more informed selection and get exactly what you need for your house. So let’s take a moment to explore the science, technology, and advantages that lay behind these revolutionary devices.

What is Evaporative Cooling?

As the name describes it, we are dealing with evaporation, the process of turning water from its liquid state to gas. This happens when the water is exposed to high temperatures, in our case when it meets the hot air in the room. The tiny bits that have the highest energy are the first to leave the water, thus resulting in a considerable drop in temperature.

To put it simpler, imagine you use a damp cloth to chill your forehead on a hot summer day. The sensation is wonderful, and the effects of the high temperature are reduced for a while. The whole process implies the water getting in contact with your warm body and gradually turning into gas. This way the temperature around your forehead is lowered and the discomfort reduced.

The Process Explained

These devices may come in different sizes, shapes, and colors, they may use either more or less advanced technologies, but one thing remains the same: the process behind. This means that the basic components are the same, so before jumping to how they work, we should focus first on the parts that make up the whole ensemble.

  • The Water Reservoir
    As we have already stated, the water is the main element of the process, and before plugin the cooler in, you must fill the included recipient with water or, in the case of an industrial evaporator, connect it to a water source through the built-in copper tube. The volume of the recipient can differ from one cooler to another, as they are designed to cool areas with different sizes. So keep this in mind: the larger the room that you need to chill, the higher the volume of the water reservoir.
  • The Evaporative Pad
    Thick and usually consisting of multiple layers, these pads soak up the water and work as filters for the hot air that goes through them. Not only that they cool the air, but capture air particles and some pollutants, improving the quality of the air. Many coolers come with additional filters, specially designed to keep viruses, bacteria, germs, allergens, and mold away.

  • The Fan
    It has a double function: to draw the hot air inside and to release it after it has been cooled down through the evaporation process. Some models allow you to select the speed of the fan, so you can set the rapidity of the chilling and the level of noise.
  • The Controls
    Usually, you can manage fan speed, oscillating function, or set a timer to reduce energy consumption. However, more expensive models will provide you with an LCD that reads parameters and helps you select the desired values. Other optional features include a remote, water level control, or night light.

Now that we’ve learned the components, explaining the process is easy. You fill the reservoir with water and the pads soak it up it (in some cases, a pump is included to make the operation more effective). Then, once you power it on, the fan starts drawing the hot air inside. The air goes through the water-filled pads and evaporation happens, lowering the air temperature down to 20 degrees. If the cooler includes filters, the microorganisms and air pollutants are removed. The last step implies the chilled air being released back into the room, improving thermal comfort.

The Advantages of Using It

Besides being highly efficient in lowering the discomfort caused by dry air and high temperature, this appliance proves to be an excellent investment, especially when you compare it with an air cooler. Here are its main benefits:

  • It’s less expensive – You don’t have to spend a fortune to enjoy the comfort of the cool air. Even the most expensive evaporators cost less than an air conditioner, and, although they can’t produce refrigerated air, they bring enough coolness to keep the horrid summer heat away.
  • It’s energy-saving – Your power bills won’t be overcharged by this little device, and if you choose to replace your air conditioner with it, you will see a huge difference when it comes to operating costs.
  • It’s environmentally-friendly – It doesn’t release refrigerant gas, which has been identified as a considerable pollutant for the environment.
  • It’s portable – You can carry it with you wherever you go. No matter if you need more cooling at the office, or you are traveling through an arid desert, it will keep the temperature and humidity in your room at an optimal level.


If you have to choose between an air conditioner and an air cooler, the last one is a better solution from many points of view. It is cheap and conveyable, and it doesn’t use any chemicals that may affect the environment. Furthermore, it won’t only chill your room but will moisturize the air, keeping humidity at a pleasant level.

Best portable evaporative air cooler on the market: Honeywell 525-729CFM

Easy to transport not only due to the fact that it weighs only 24.9 pounds, but due to the fact that it actually features casters that allow you to change its location without picking it up and carrying it yourself, this Honeywell entry tops the market through its lightweight profile and hard to beat performance. The airflow rating ranges from 525 to 729 CFM depending on which of the 3 speed settings you select, which makes it perfect to cool small to medium-sized rooms.

For added convenience when you do relocate it, the Honeywell features side handles that you can grab onto. Other important features of this model include a low water alarm that lets you know when to refill, as well as a timer that helps reduce operational costs and allows you to customize its operational time span as you see fit.

Editor’s choice: Costway 23430-CYPE

Recommended for bigger rooms that need a continuous powerful airflow to stay cold, a larger air cooler like this Costway entry will do the job just fine. If you worry that its size may reduce portability, here is the good news: it comes with universal wheels that are attached to its bottom. Thus, you won’t have trouble relocating it when needed.

Best portable evaporative air cooler for RV: Peodelk Mini Evaporative Cooler

The RV should be cool and comfy, especially when you’re on the road. This is your second home, after all, so you must make the ambiance pleasant to have a good time on your vacations and RV adventures. For this to be possible during warm weather, the Peodelk is the compact air cooler you need. It takes up very little space, which evidently makes it perfect for RVs where space is limited and should be used optimally. Moreover, it features a hefty 400-milliliter water recipient, so you won’t find yourself refilling it all that often.

Best portable evaporative air cooler for the money: Aeosbik Portable Air Conditioner Fan

When the budget is tight, you need to search value without the loss of quality. With the Aeosbik you get to enjoy a cooler habitat in the kitchen, office, bedroom, or any other small to medium-sized room you’re in without having to pay a lot of money for this convenience. One of the most impressive aspects, aside from the cheap asking price, is the fact that it provides a runtime of up to 6 hours on a full tank, reducing your trips per day to refill it with water.

Trystan Jensen
Trystan Jensen
Trystan is a trusted reviewer who has extensive experience in customer satisfaction gained while he worked as a market research analyst. He is well aware of what consumers want, as well as what they expect the most from the acquisitions they make. It is his personal interest in technologies that help improve life quality combined with his attentiveness to detail and customer experience that make Trystan an unending source of qualitative content.