Although manufactured evaporative coolers have only been around since the turn of the 20th century, humans have known about the evaporative process of cooling for thousands of years. It was first utilized in Persia and was quite successful in cooling down buildings exposed to hot, dry conditions. And thanks to the proliferation of these types of coolers, now anyone can enjoy this product to cool their home and moisten their air at the same time.

Unfortunately, although there are quite a few of these types of coolers, they’ve remained relatively unknown to a large segment of the population over the past few years. However, we intend on correcting that oversight by introducing to our readers the ten best evaporative coolers currently available. Regardless of whether you’re new to these types of coolers or have been a fan for years, there’s one in the following list that’s just right for you.

Top List of Best Evaporative Coolers

#1. Hessaire MC37M Portable Evaporative Air Cooler

What makes this the best evaporative cooler available? Well, the main thing that makes it the best is that it’s capable of cooling off an area of up to 750 square feet. It can do that because it can push out 2,200 cubic feet of air per minute and has a 10.3-gallon water reservoir that allows it to operate for a long time. This cooler is also equipped with an injection-molded UV-protected case that allows it to be used outdoors, so the homeowner can enjoy their patio or BBQ area without suffering from high-temperatures. And because this model also has wheels, it can be moved around a property as needed.

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#2. Hessair Products MC18M Mobile Evaporative Cooler

This evaporative cooler might not look very fancy, but it is equipped with many of the features that people look for out of a swamp cooler. This model only consumers 82-watts of energy, so it can be used without driving up the homeowner’s electric bill, and it has a 4.8-gallon water reservoir that allows it to be used for long periods. It’s also equipped with an easy-to-use control system that allows the user to control fan speed and whether the unit is on or off. Since this unit is capable of pushing 1,300 cubic feet of air per minute, it’s capable of cooling a room up to 500 square feet in size quite easily.

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#3. GreatsSly Portable Air Conditioner Fan

Although this personal evaporative cooler fan is much too small to be used to cool down a room, it is a great solution for anyone who needs to cool off their person. This model uses a 400-mL water tank, has three different wind speeds, and is capable of working for anywhere from 3 to 5-hours at a time. It’s only 8.9-inches high, so it doesn’t take up much space and can be easily placed on an end table, coffee table or desk to deliver the cool moist air that a person desires. And because it’s also equipped with an LED light that can change to one of seven different colors, it can also be used as a part-time nightlight.

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#4. Honeywell 525 Indoor/Outdoor Portable Cooler

If you live in a region that experiences high temperatures and has a relative humidity that’s below 50%, then you may want to take a good look at this model. It’s a model that uses only 288-watts of energy but is capable of moving up to 729 cubic feet of air per minute. What’s truly remarkable about this evaporative cooler, however, isn’t its ability to cool down rooms, but it’s the ability to be used for either indoor or outdoor use. Yes, this model has a weather-resistant case that allows it to be used on patios, in backyards and other outdoor spaces. Now cool comfort is within reach for just about anyone.

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#5. Honeywell 300 Portable Evaporative Fan & Humidifier

This evaporative cooler, also known as a swamp cooler, is designed to handle the heat and humidity in a small to medium-size home. It combines the best parts of a fan with the best parts of an air conditioner to make rooms a lot more comfortable. Since this product uses evaporative technology, and not a compressor, it’s capable of cooling down rooms without driving up the homeowner’s electricity bill. It creates that cool lake cooling effect that many people desire but can’t obtain. Some of the features found on this model include a carbon dust air filter, a remote control, a low-water alarm, and a detachable water tank.

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#6. Trustech Evaporative 40-Inch Oscillating Fan Tower

When most people think of evaporative coolers, they think of square boxes that blow cool, moist air. Most people don’t even realize that this technology is available in another form: the oscillating tower fan. Yes, this product combines the power of an evaporative cooler with the convenience of a tower fan to create one of the more useful coolers available. This 40-inch tower fan has a 70-degree angle of oscillation and is super-quiet, so it can not only be enjoyed in the common areas of a home but can also be used in a bedroom while people are sleeping. This fan also has three different modes, three different wind settings, and has an 8-hour timer for convenience.

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#7. Honeywell 470 Portable Fan & Humidifier Cooler

This evaporative cooler is designed explicitly for handling small to medium-sized rooms, and for regions that experience hot and dry climates. That means its a great product for not only the Southwest and Midwest regions of the U.S, but anywhere that experiences hot weather with humidity levels below 60%. This product is designed to be an energy-efficient model, so homeowners can cool off their homes without driving up their electricity bills. Some of the features that can be found in this unit include a low-water alarm system, a carbon dust air-filter, an adjustable humidification dial, and remote control.

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#8. OEM Tools 3-Speed 3,100-CFM Cooler

Even though this evaporative cooler is a little more expensive than some of the other models available, it is capable of doing a lot of things that other coolers can’t do. This model is equipped with a 1/5-HP motor and a 10.3-gallon water capacity, which allows it to effectively and systematically cool down a home up to 950 square feet in size. It’s also equipped with an oscillating design and a blower that can move up to 3,100 cubic feet of air per minute, which allows it to achieve such a great room coverage. Other features found on this quality cooler include an energy-efficient axial propeller for moving air without making sound and a UV-resistant resin case that keeps its internal components safe during operation.

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#9. Luma Comfort Portable Evaporative Cooler

This evaporative cooler is specifically designed for the home that is in areas that experience high temperatures but have little to no humidity. In those conditions, this product can be used to cool down and add moisture to a room up to 250 square feet in size. This model is equipped with three different cooling speeds, so the consumer can always choose the one that suits them the best. When properly used and under the right conditions, this cooler is capable of lowering indoor room temperatures by up to 30-degrees Fahrenheit and keep humidity levels quite comfortable.

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#10. Costway Portable Air Cooler With Fan

Harnessing both the technologies of refrigeration and air humidifying, this evaporative cooler is designed to quickly cool down a person’s home. This model is equipped with a large 6-liter water tank that provides all-day operation but doesn’t have to be constantly refilled. It’s also equipped with three different speeds, so the consumer can choose what’s most comfortable for them, and has an 8-hour time that automatically stops it on schedule. And it’s also available in sizes from 24-inches in size, all the way up to 29.5-inches in size, so the consumer can buy one that suits their space.

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Unsure? Here are some suggestions directly from Amazon:


A Guide To Evaporative Coolers

Evaporative coolers are great for cooling off hot and humid environments—as long as the consumer purchases the right one for the space it’s going to be used and for the conditions. Having said that, below are some tips that will give everyone who reads them a better chance of buying the best evaporative cooler for their needs.

How Evaporative Coolers Work

Let’s begin this guide by talking about the general principle behind evaporative coolers. These coolers cool the air in a particular space by using the power of evaporation. They take in air and then move that air over some type of water moistened cooling media such as a cooling pad. The cool water then evaporates into the air and the cool air is then recirculated into the room or area. These coolers work extremely well as long as their water tanks are full and they have a constant supply of fresh air. Therefore, it’s always important that they’re operated either outdoors or in a room that has a window open.

Choosing The Right Size Evaporative Cooler

As we continue on with our guide, let’s talk about the most important thing that consumers are going to want to consider when purchasing their new evaporative cooler: the cooler’s size. If the consumer needs to cool a room in their home or to cool any outdoor area such as a deck or patio, then they’re most likely going to want to get a Residential Evaporative Cooler. These coolers are portable, usually have a handle and/or wheels, and can be easily moved from one location to another.

If the consumer needs a cooler for a large indoor/outdoor area, then they might want to consider a Commercial Evaporative Cooler. Commercial models are much bigger than residential models and they’re usually equipped with additional safety features that allow them to hold up to outdoor conditioners better. As can probably be ascertained, commercial coolers also tend to cost quite a bit more than residential models.

Think About The Cooler Size Needed

The next thing that the consumer should consider is the size of the unit. Choosing the right size cooler can mean all the difference between a well-cooled area and an area that feels uncomfortable. To determine what size cooler you’re going to need, however, you’re first going to have to figure out how big the cooled area is and then do some math to figure out the CFM that the cooler needs to have.

The CFM of the cooler is the amount of air the unit can cycle every single minute. It literally stands for cubic-feet-per-minute. To determine the recommended CFM of the unit you’re thinking of purchasing, you first have to measure the area it’s going to be used in first and then do a bit of math. Let us show you how.

To determine the CFM needed, take the area of the room in square feet and multiply it by the height of the ceiling. When that’s done, the number should then be divided by 30 to come up with the recommended air changes per hour. And finally, to come up with the CFM of the unit, you’re going to have to take the recommended air changes per hour and divide it by 60 to reach the cubic-feet-per-minute.

For example, suppose you have a 300 square foot room with a 7-foot ceiling. First, multiply the area of the room by the height of the ceiling. This gives you the square footage of 2,100 square-feet (300×7). Next time that by the number of recommended air changes per hour—which is 30. This gives you the number 63,000 (2100×30). Now, take that number and divide it by 60 to get the CFM. That’s 1,050 CFM (63,000/60). That’s going to be the minimum number of CFM for that unit to cool that size room.

If you don’t want to do a lot of math, then we’ve included a handy guide below with some of the more common room measurements and the CFM needed to clean those rooms. The following figure assumes that the room has a standard 8-foot ceiling, is occupied by only one or two people, and that the area isn’t exposed to direct sunlight are doesn’t have a lot of heat-generating appliances. If any of those conditions happen to be the case, then be sure to add 20% to the total CFM listed to compensate.

Common Room Measurement VS. Recommended CFMs

  • Up to 250 square-feet: 200 to 750 CFMs
  • From 251 to 500 square-feet: Up to 2,000 CFMs
  • From 501 to 1,000 square-feet: Up to 4,000 CFMs
  • From 1,001 to 2,000 square-feet: Up to 7,500 CFMs
  • Over 2,000 square-feet: 7,501 CFM or higher.

Water Tank Capacity

Another thing that you’re going to want to consider is the size of the water tank. The water tank should be appropriate for the size of the cooler. If the water tank is too small, it will have to be consistently refilled. If the water tank is too big, it’s just a waste of water and time to refill it. Below are some tips for choosing the appropriate size water tank for your cooler to make sure that it works well for the room it’s being used in.

  • Smaller rooms need a 1-3 gallon water tank.
  • Medium-size rooms can use up to a 7-gallon water tank.
  • Large areas need a 12-16 gallon tank.
  • Extremely large areas need over 16-gallon water tanks.

Other Features To Think About

Before concluding our little guide on the subject of evaporative coolers, let’s list some of the other features that you might want to consider before purchasing your next cooler model. Below are some of the features that can mean the difference between a quality cooler and a cooler that you end up being frustrated by.

  • Remote Control
  • Oscillating Louvres
  • Digital Controls
  • Price Of The Unit
  • The Length Of Its Warranty
  • Air Filter
  • Ice Compartments
  • A Built-In Timer