Best Evaporative Cooler 2021 Review and Buying Guide

If you are residing in a dry and hot region, staying cool and comfortable can become difficult. A standard air conditioner may not suffice your needs and you can be faced with a crisis of keeping cool. This is when the best evaporative coolers in the market will come to rescue you and your family. And not to forget, they will even be cheaper to run than standard ACs.

Heat may fluctuate in your surroundings and you may require fast relief. In such a situation, an evaporative cooler which complies with the size of your room, will help you out. Some evaporative coolers can also be used outdoors, while it is true that an outdoor model might not be the best for indoor purposes.

Before moving to the buying guide, explaining all the factors that you should keep in mind before buying the perfect evaporative cooler, let us take a good look at the best evaporative coolers we recommend after a successful scouring of the market.

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Best Evaporative Cooler Reviews

Upon a careful review of the best evaporative coolers, we have come to the top 7 evaporative air cooler models, considering some of the most important factors to be discussed below.

Honeywell CO48PM (For Indoor & Outdoor Use)

Honeywell CO48PM Evaporative Air Cooler For Indoor & Outdoor Use, 1062 CFM - 10.6 Gallon TankCHECK CURRENT PRICE

The evaporative air cooler is one of the best choices in the market given the large capacity of the water tank and the high power of air flow which help to cool down large spaces rapidly and efficiently. The build is pretty solid.

There are 3 possible fan speeds, and you can adjust the speed as per your needs. The noise level is pretty decent when compared to other large swamp coolers of similar formats. It is also not very heavy and can be used well for both indoor and outdoor spaces.

A 90% full tank can last about 5 days if in use for around 5 hours per day. It helps to minimise energy consumption with the maximization of airflow due to its well-crafted aerodynamic properties.

Key Features:

  • Consists of 1062 CFM Air flow
  • Cover a cooling area of 610 sq. Ft.
  • The tank size is around 10.6 gal.
  • The dimensions of the evaporative air cooler is 14.76” x 24.2” x 34.17”
  • The total capacity of the swamp cooler is 30.9 lbs.
  • It does not contain a timer.
  • It cannot be controlled by a remote.


  • The evaporative air cooler is durable due to its design.
  • It is UV and weather- resistant in terms of its construction.
  • It comes with 3 possible control speeds for the fan.
  • The air cooler can be used both indoors and outdoors.
  • The large tank size allows you to not have to keep refilling the water tank.


  • The emptying of the reservoir is seen as a little difficult and unhandy by some users.

2. Hessaire MC37M (Portable)

Hessaire MC37M Portable Evaporative Cooler, 3100 Cubic Feet per Minute, Cools 950 Square FeetCHECK CURRENT PRICE

Given the powerful airflow properties of the Hessaire MC37M, it is ideal to be used for almost every sort of room, including large open living spaces. It is true that the cooling performance might be a little reduced when in open spaces.

Whenever the humidity is low, and the temperature outside is high, this evaporative air cooler cools the room almost as rapidly as a standard air conditioner. It has been reviewed to show a difference of around 25 degrees between the temperatures inside and outside when this air cooler is in use.

The swamp cooler comes with multiple air intake panels and sucks air from three sides, allowing the room to cool fast and efficiently. A pump carries water to the high density XeL50 rigid media, which constitutes of wide evaporation surface area.

Thanks to its amazing cooling performance, portability and a competitive price, the Hessaire MC37M is a perfect choice for most homes.

Key Features:

  • Consists of 3100 CFM Air flow
  • Cover a cooling area of 950 sq. Ft.
  • The tank size is around 10.3 gal.
  • The dimensions of the evaporative air cooler is 25” x 17” x 37”
  • The total capacity of the swamp cooler is 41 lbs.
  • It does not contain a timer.
  • It cannot be controlled by a remote.


  • The airflow of the evaporative air cooler is very powerful, which allows it to cool large rooms.
  • It comes with easy portability.
  • The fan speed can be adjusted as per need.
  • The swamp cooler is able to cool spaces quickly and efficiently.
  • It is a pretty good value for the money you spend.


  • The evaporative air cooler does not come with a timer
  • The lower fan speed could have been useful for cooler weathers.

3. Honeywell 525 CFM

Honeywell 525 CFM Indoor Outdoor Portable Evaporative Cooler, 525CFM, GreyCHECK CURRENT PRICE

The Honeywell 525 CFM evaporative cooler is suitable for almost all sizes of rooms. Given the fact that it is not exceptionally large but includes enough airflow to cool around 320 square foot or smaller bedrooms, living rooms, or home offices, it does the work. Furthermore, the design of the cooler is weather- resistant.

Do not be deluded by the small size of this swamp cooler. It is one of the best in terms of capacity of water tank (7.9 gallons) which can last for long hours before requiring a refill. Moreover, if you do not want to keep adding water, you can connect a hose for constant water supply. This water tank is also detachable, making it easy to refill.

When the weather is hotter than usual, you can fill the ice compartment with ice and the cooler will blow cooler air.

It also comes with a carbon filter that allows removal of dust and allergens from the air. You are able to get a remote control with which you may set a time, adjust speed of the fan, swing the vents or turn the unit on or off.

The swamp cooler is pretty decent in terms of size- it is tall and narrow and easily fits in small compact places. All in all, we call this a powerful, yet affordable evaporative air cooler, one of the best in market.

Key Features:

  • Consists of 525 CFM Air flow
  • Cover a cooling area of 320 sq. Ft.
  • The tank size is around 7.9 gal.
  • The dimensions of the evaporative air cooler is 18” x 13.9” x 33.7”
  • The total capacity of the swamp cooler is 24.9 lbs.
  • It contains a timer.
  • It can be controlled by a remote.


  • It comes with a large tank and that means you will not have to refill the water as frequently.
  • It comes with an ice compartment
  • The air cooler includes remote control and timer.
  • The evaporative cooler can be safely used outdoors.
  • The air cooler comes with a hose connection if you want to avoid having to keep refilling.


  • The air cooler might be loud at some speeds.

4. Evapolar evaLight Personal Evaporative Air Cooler (Ultra Compact)

Evapolar Personal Evaporative Air Cooler and Humidifier / Portable Air Conditioner, WhiteCHECK CURRENT PRICE

The Evapolar evaLIGHT is sort of a small desk side or bedside fan which has pretty good cooling abilities. Instead of merely moving the air around, the evaporative air cooler helps to cool the air by 5- 10 degrees from the ambient temperature.

Evapolar is USB – powered, and this means that it is convenient to use on your work desk or bedside table. Even when you are going for camping, you can merely plug it into a power bank or solar genitor to stay cool. But please keep your expectations in check. You will need to be at a close distance to feel the cool breeze.

The 35 oz. tank can last up to 4 or 5 hours once it is full. This also means that if you want it to function all night, you will have to wake up in the middle of the night to refill the tank.

One amazing thing about the swamp cooler is that it has integrated LED lighting which can function as mood lighting and you have control over turning it on or off.

Overall, this Evapolar evaLIGHT provides for a convenient energy- saving cooler that can be ideal for you if you do not want to affect the climate of your personal space. Furthermore, noise is not an issue, so it’s pretty handy.

Key Features:

  • Cover a cooling area of 45 sq. Ft.
  • The tank size is around 35 oz.
  • The dimensions of the evaporative air cooler is 6.69” x 6.7” x 6.87”
  • The total capacity of the swamp cooler is 2.8 lbs.
  • It does not contain a timer.
  • It cannot be controlled by a remote.


  • It has a compact design- which makes it ultra- portable, taking up very little space
  • The evaporative air cooler is powered via USB.
  • This comes with an integrated night light.
  • It is very portable and ultra- compact.
  • There is almost no complaint in terms of noise. It is a quiet cooler.


  • The water in the tank does not last long.
  • The air cooler is prone to leaking easily if not placed on a completely flat surface.
  • The LED light requires regular changing.

5. Phoenix Manufacturing WH2906 (Window Cooler)

Phoenix Manufacturing WH2906 Slim Line Evaporative Window Cooling Unit with 500 Square Feet Cooling CapacityCHECK CURRENT PRICE

The Phoenix Manufacturing Evaporative window cooler is indeed one of a classic design. It is a tan window cooler with an industrial style and thick steel housing. The swamp cooler consists of PEBLAR XT powder coating that helps to protect against the elements. It also makes the cooler rust resistant.

Insider the evaporator, there is an 115V direct drive motor at 1/8 HP. The shaft of the cooler is built to decrease the noise level. The blower wheel of the evaporative cooler is 8 inches which makes the system very efficient, given the additional benefit of mirrorscopic polishing on the shaft.

Unlike standard AC units, this is pretty compact and slim in design. Though not powerful for extremely large spaces, it’s perfect for greenhouses, trailers, and large- medium sized rooms. This also comes with a 1- year warranty on the parts.

Key Features:

  • The air flow capacity of the cooler is 2800 CFM
  • Cover a cooling area of 500 – 1000 sq. Ft. (depends on model you choose)
  • It is known to have 1/8 HP, 115 Volts and 2 speed motors
  • The tank size is around 35 oz.
  • The dimensions of the evaporative air cooler is 22” x 31.25” x 27”
  • The weight of the swamp cooler is 59.9 pounds
  • It does not contain a timer.
  • It cannot be controlled by a remote.


  • The airflow is pretty powerful with 2800 CFM, which helps to cool large work spaces easily
  • The evaporative air cooler is reasonably priced and worth the investment
  • This profile of the swamp cooler is pretty slim.
  • There is almost no complaint in terms of noise. It is a quiet cooler.
  • It is weather resistant.


  • Installation features are missing
  • Not suitable for large spaces

6. Hessaire C92 (For Work Spaces)

Hessaire Products Hessaire C92 Evaporative Cooler for 3,000 sq. ft, GrayCHECK CURRENT PRICE

The Hessaire MC92V is one of the top- class evaporative air coolers which are suited for hot indoor commercial and industrial work spaces, including kennels, stables, warehouses etc., up to the 3000 square feet. It is even safer in wet conditions with the GFCI safety plug that comes with the air cooler.

You can manually fill the unit through the spring- loaded water fill door in the tank. It can go for constant cooling up to 4 hours. Furthermore, it comes with the option of Continuous water fill that allows for automatic filling with a mere garden hose hook- up. There is a water level display next to the door which helps to monitor the tank levels.

You can rinse and reuse the washable Xel50 cooling pads. It also comes with oscillating louvers.

Given the portability of the cooler, you can easily move the swamp cooler from one room to another using its caster wheels.

Key Features:

  • The air flow capacity of the cooler is up to 5300 CFM
  • Cover a cooling area of 3000 sq. Ft.
  • It has 4 possible speeds for fan.
  • The dimensions of the evaporative air cooler is 59” x 26” x 46”
  • The weight of the swamp cooler is 126 lbs.
  • The coolers comes with a tank capacity of 33 gallons
  • There are options of both automatic and manual fills


  • The airflow is pretty powerful with 5300 CFM, which helps to cool large work spaces easily
  • It is highly suitable for work spaces
  • It is equipped with a motor.
  • Pads are included with the evaporative air cooler
  • It comes with 3/ 4 fan speeds, which can be adjusted
  • The swamp cooler is pretty portable


  • Timer and remote control features are missing

7. Hessaire 6,800 CFM (For Whole House)

Product Link: See details here

The Hessaire A68D evaporative air cooler is designed for economical cooling in areas with arid climate. It is pretty low maintenance and given the space capacity, extremely suitable for the whole house.

The cooling space is very effective. The unit also features a 19 inch blower wheel and consists of a duct size of 20 inches. One problem with this cooler is that it requires you to buy an external motor.

Key Features:

  • The air flow capacity of the cooler is up to 6800 CFM
  • Cover a cooling area of 2400 sq. Ft.
  • It needs to be used with a 1/ 2 or 3/ 4 HP 2- speed motors (which are separately sold)
  • The dimensions of the evaporative air cooler is 42.25” x 37” x 37”
  • The weight of the swamp cooler is 181 lbs.
  • Professional installation is recommended for this evaporative air cooler
  • Does not include a motor
  • Comes with 2-year parts’ warranty


  • The airflow is pretty powerful with 6800 CFM, which helps to cool large spaces easily
  • It is highly suitable for the whole house
  • It consists of a down draft and covers over 2400 sq. ft.
  • The evaporative air cooler comes with a solid drive shaft
  • The cabinets are made from 24-Gauge, galvanized steel
  • The polymer bonded coating helps to prevent corrosions


  • It is not equipped with a motor
  • Requires professional installations

Evaporative Cooler Buying Guide

Now that you are aware of the best models of evaporative air cooler in the market, it is important to know what the most important aspects are to consider when making the perfect choice for your space.


This really depends on where you want to use your swamp cooler. In the list above you can compare the portability of the different top players to decide among the most mobile cooler for your space if that is your requirement. Some coolers have wheels that allow easy transportation between rooms.


As the name suggests, portable evaporative coolers are lightweight and portable. They are quite a lot less expensive than typical air conditioners. But, these coolers only work effectively in areas with moderate climate. If you live in an area of hot climate, portable evaporative coolers might not be the best option for you.


If you are looking for coolers that can cover the whole house, you should be looking at specifications of the cooler, and check the area of coverage. Most coolers do not work well for the whole house, but there are some like the Hessaire 6,800 CFM Down-Draft Roof which can do so.

Indoor – Outdoor

If the temperature is well-maintained, you are able to use an indoor swamp cooler to help cool down your living space, bedroom or any warm stuffy corner of your home. In very dry climates, these coolers should only be used indoors and when fresh air source is available. Outdoor evaporative coolers also function well in the pool regions, backyards and in decks.


The window coolers usually only cover small spaces, maybe just the region around your window and you often need to be close to the cooler to experience the cool air.

Air Conditioner Functions

Some evaporative coolers also work as evaporative air conditioner. These are ones which have AC functions integrated in them. If you want a standard AC replacement, then you should check for this specification in the cooler. Only a few models will have it.

Room Size

This is an important factor to consider as you need to know what area the evaporative cooler is able to cover or cool. There are specific coolers for small and big rooms. Unless you want to put two coolers in one room, it is useful to check well which one fits. The correct size of the space ensures that the space stays cool without having to waste too much energy.


Are you looking for a cooler which you can simply carry around, or one that comes with wheels to be transported from one room to another? Then, portability is the issue you should be focusing on. This also comes with the size of the cooler.

Humidity Level

The cooler cools the air by filtering it through the water in the tank, thereby reducing the temperature. Hence, they produce humid air. You must check how much humidity level outside is the cooler most compatible with. This will help you decide which cooler to go for depending on the area you live in.

Energy Consumption

This is related to how much cooling is occurring in accordance to the area it is covering. A good cooler with a thermostat can be a good option. Lower running costs will also mean air coolers will be consuming less energy. Most are also eco-friendly and do not use any refrigerant for cooling.

Type of Cooling Pads

Swamp coolers have two different types of cooling pads usually- the Aspen Pads, and Blue Synthetic Cooler Pads. Aspen pads are the best in terms of cooling capacity. They absorb water very well, give off a nice wood smell and are available in size of 1” and 2”. However, they may deteriorate fast and need to be replaced every year.

The blue spongy pads do not deteriorate but they don’t absorb water that well. They have the adequate cooling capacity and are odourless. Furthermore, they can be easy fit into any cooler.

Water Tank Capacity

Choosing the right size of the water tank unit is important. The larger air coolers will have larger water tank capacity usually. This means you will not have to change water too fast. Depending on how big it is, you can decide how long you want the cooler to keep running everyday without having to refill the tank.

Frequently Asked Questions

How often do we have to replace the cooling pads?

This is a difficult one to answer but important to know. It depends on how frequently you use the cooler besides the model and type of media used.

Do we need to leave a door or window open when using an evaporative cooler indoors?

Yes, if you want a fresh supply of air in the area you are trying to cool, otherwise, humidity will rise.

Is the maintenance part difficult?

Usually it is pretty low for such machines unless you are using coolers for the whole house. All you have to do is to regularly change media pads, and refill and clean the reservoir to prevent germs.


And that’s it! We’re done with our review of the best evaporative coolers available in the market. By now, you should be able to choose your preferred cooler from the ones we mentioned which are best in terms of power and reliability. If you take care of your expectations, consider your needs, you will be happy with how amazing the swamp coolers can make you feel!

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