5 Best Evaporative / Swamp Coolers – (Reviews and Comprehensive Guide of 2020)

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An evaporative cooler is a way of cooling the air using water evaporation instead of a compressor and air conditioning. This method of cooling works best when relative humidity is low and temperatures are high. For people living in the Southwest and the Midwest, evaporative coolers are a way to gain relief from the Heat while spending a fraction of what they would on equivalent air conditioning. But purchasing a new evaporative cooler can be a little confusing especially if you aren’t sure how they work.

That is what this guide is for. First we are going to give you some reviews on the best portable evaporative coolers sold on Amazon today. After that we will go into a comprehensive buying guide that covers how evaporative coolers work, what you should be looking for when purchasing one, and how to go about taking care of one once you have it.

Evaporative Coolers Reviews

Evaporative Coolers Reviews
  • 4 Customer Rating
  • Hessaire MC37M Portable
  • CFM: 3100
  • Fan Speeds: 2
  • Water Tank Size: 10.3 gallon
  • Color: White
  • Weight: 41 pounds
  • Warranty: One Year Limited

Evaporative Coolers Reviews
  • 4 Customer Rating
  • Peodelk Compact Evaporative
  • CFM: N/A
  • Fan Speeds: 3
  • Water Tank Size: 420 mL
  • Color: White
  • Weight: 27.16 ounces
  • Warranty: N/A

Evaporative Coolers Reviews
  • 4 Customer Rating
  • Honeywell CO30XE Portable Evaporative
  • CFM: 525 to 729
  • Fan Speeds: 3
  • Water Tank Size: 7.9 gallons
  • Color: White
  • Weight: 24.9 pounds
  • Warranty: One Year Limited

Evaporative Coolers Reviews
  • 3.5 Customer Rating
  • Duolang DL-4501 Portable Evaporative
  • CFM: 2647
  • Fan Speeds: 3
  • Water Tank Size: 10.7 gallons
  • Color: White
  • Weight: 41.9 pounds
  • Warranty: One Year Limited

Evaporative Coolers Reviews
  • 3.5 Customer Rating
  • Honeywell CL201AE Portable Evaporative
  • CFM: 470 to 659
  • Fan Speeds: 4
  • Water Tank Size: 5.3 gallons
  • Color: White
  • Weight: 23.4 pounds
  • Warranty: One Year Limited

Hessaire MC37M Portable Evaporative Cooler

Best Evaporative Coolers ReviewsThis evaporative cooler is relatively compact with a dark grey minimalist exterior that will blend in with nearly any outdoor décor. This evaporative cooler is 38 inches tall, 24 inches wide, and 16 inches deep, and weighs in at 41 pounds. It has four caster wheels with powder coated hardware that let you easily move your evaporative cooler wherever you need it.

The water reservoir for the evaporative cooler has a 10.3 gallon size and has a manual fill. You can also connect a hose or a direct water line as well. This water input must be under 50 PSI and will keep the water level where it needs to be to keep the cooler operating. You should be aware that the evaporative cooler can be run if the water reservoir runs dry. In fact, you should run the cooler’s fan for at least a half hour with the reservoir empty to allow the media to dry out.

The cooler adds water to the air much like a wick humidifier does. The media pads are made of resin impregnated craft paper that has a long lifetime when used appropriately. The pads should be inspected every few weeks to check for hard water residue. If there are calcium deposits that clog the pad, then it will need to be replaced. The media is easy to find and the directions for replacing it are in the user manual.

This swamp cooler has a power draw of 2.4 amps and should be plugged into an outlet with a GFCI to reduce the risk of electric shock. There are two separate fan speeds and can be operated using the evaporative cooling or just as a fan. It has a timer as well, so you can set it and forget it. When placing the cooler, ensure that there is sufficient ventilation for both draw and exhaust.

With a sleek look and the easy portability due to the casters, it’s easy to put this cooler wherever you need it, both indoors and out. The options for cooling as well as the oscillation and timer options make it easy and versatile to use. This would be a great addition to anyone who lives in a high heat/low humidity environment and wants to save money on air conditioning.


  • Dimensions: 24 x 16 x 38 inches
  • Weight: 41 pounds
  • Rated CFM: 3100
  • Air Filter: None
  • Fan Speeds: 2
  • Water Tank Size: 10.3 gallon
  • Ice Compartment: No
  • Electrical Requirements: 250 Watts @ 115/120 Volts, 2.4 Amp
  • Warranty: One Year Limited

Peodelk Compact Evaporative Cooler

Best Evaporative Coolers ReviewsThis is a small personal evaporative cooler meant to supplement your existing HVAC system. A sleek black housing and small size make this easy to put on your desk to keep you cool or keep the air from getting too dry. It measures 9.54 inches tall, 5.69 inches wide, and 3.93 inches deep with a weight of about 1.5 pounds.

The internal water reservoir holds 420 mL and it is meant for manual filling only. This amount of water is enough to keep the cooler operating for 4 to 6 hours. It’s also possible to add ice to the reservoir to provide additional cooling when needed. This swamp cooler adds water to the air via a fine mist spray. This not only provides additional cooling, it also adds humidity to assist in relief in dry environments.

The cooler has a very light power draw, requiring only the 24 volt DC adaptor that is included with the unit. This means that it uses much less electricity than an air conditioner, and allows you to cool down without driving your electric bill up. This small unit is best placed close to you to get the best effect from the mist and fan.

This swamp cooler has three speeds and will automatically shut off when the water in the reserve is depleted. This means that you can let it run while you step out without worrying that a dry reservoir is going to harm your investment. The manufacturer recommends that you fill the reservoir about 3/4 full when you use it and let it run until empty. This means that the internal tank will not suffer from excessive scale or residue by leaving water in there. You should also use a bottle brush or toothbrush to clean it out once per week.


  • Dimensions: 5.69 x 9.54 x 3.93 inches
  • Weight: 27.16 ounces
  • Rated CFM: Unlisted
  • Filter: None
  • Fan Speeds: 3
  • Water Tank Size: 420 mL
  • Ice Compartment: None
  • Electrical Requirements: 24 volt DC adaptor (included)
  • Warranty: None Listed

Honeywell CO30XE Portable Evaporative Cooler

Best Evaporative Coolers ReviewsThis dark grey evaporative cooler has a rather futuristic look with chrome and dark accents that fit in with nearly any décor. This unit is slim, measuring in at just less than three feet tall at 33.7 inches, and 18 inches wide and 13.9 inches deep. It is also very light, weighing in at only 24.9 pounds. Its weather resistant housing means that you don’t have to stop cooling things down just because of a little wind.

This swamp cooler has a modest reservoir that can fit 7.9 gallons with a top compartment for ice. Loading ice into this compartment cools the moist air down even more, providing more relief on a hot day. The water tank itself is detachable, which makes it easier to refill and clean for the recommended maintenance. With a variable air movement rating from 525 to 729 cubic feet per minute, this evaporative cooler is capable of keeping a medium sized area cooled down. There is also a connection to allow for continuous water flow if you so desire.

Using three different wicking pads that have honeycomb shapes, the fan draws air in through the wet media, which then evaporates some of the water in the panels. After that, the naturally cooler air is blown out over you and your guests, cooling you down. Of course, as we mentioned, you can add ice to cool the air down even more. The best part is that this helps you to naturally humidify the air as well, ensuring that your nasal passages don’t dry out in the fierce dry heat.

This evaporative cooler plugs into a standard outlet and draws 288 watts. While this may seem like a lot, it’s a fraction of what an air conditioner draws. And you can’t use an air conditioner outside like you can this cooling fan. For mere pennies per day, you can cool down an arid and hot environment naturally. And with the full featured remote, it’s easy to keep everything under control from the comfort of your hammock or chair. A timer and easy to use controls ensures that this will be one of the easiest evaporative coolers you’ve ever used.


  • Dimensions: 18 x 13.9 x 33.7 inches
  • Weight: 24.9 pounds
  • Rated CFM: 525 to 729
  • Filter: None
  • Fan Speeds: 3
  • Water Tank Size: 7.9 gallons
  • Ice Compartment: Yes
  • Electrical Requirements: 288 Watts, 120 Volts
  • Warranty: One Year Limited

Duolang DL-4501 Portable Evaporative Cooler

Best Evaporative Coolers ReviewsThis attractive white swamp cooler has light blue accents that help it fit in with beach or tropical décor. It measures 35.4 inches tall, 24.8 inches wide and 16.5 inches deep. It weighs 41.9 pounds when it’s empty. That may seem a bit heavy, but thanks to four caster wheels that spin 360 degrees, you won’t notice as you move this cooler wherever you need it put.

The reservoir is 10.7 gallons and there are three fan speeds to choose from. You fill the reservoir from the side quickly and easily. With a generous 2647 cubic feet per minute of air circulation, you can easily cool up to 323 square feet. The addition of a washable and reusable dust filter helps keep both you and your new cooler from getting dusty. Additionally, there is an ice cube tray in the top of the cooler which will help cool you down even more.

There are three separate honeycomb wicking pads, one on each side of the cooler. As the primary fan blows air out, it draws hot dry air in. This air picks up moisture from the pads through evaporation, naturally cooling it. This cool air then blows over the bottom of the ice cube tray, cooling the air even more. If you don’t use the ice tray, you can use this as a traditional wick humidifier as well, keeping your home’s air moist to fight the dry heat.

This swamp cooler pulls a modest 200 watts, making it extremely cheap to run on a daily basis. With its quiet sound output peaking at just about 55 decibels and a full feature remote control, you’ll be using this cooler to beat the heat every day. This unit is suitable to use as a regular fan, a humidifier, or you can use it to pull dust from the air and filter it through the dust filter. The control panel has LED indicators for its 3 speed settings and to activate wind mode when you need to.


  • Dimensions: 24.8 x 16.5 x 35.4 inches
  • Weight: 41.9 pounds
  • Rated CFM: 2647
  • Filter: Washable and Reusable Dust Filter
  • Fan Speeds: 3
  • Water Tank Size: 10.7 gallons
  • Ice Compartment: Yes
  • Electrical Requirements: 115/120 Volts, 200 Watts
  • Warranty: One Year Limited

Honeywell CL201AE Portable Evaporative Cooler

Best Evaporative Coolers ReviewsThis attractive and stylish silver portable evaporative cooler will provide cooling and add moisture and value to any home it is placed in. The unit is a little shorter than all the others, measuring 32.9 inches tall, 18.9 inches wide and 14.6 inches deep. It is also fairly lightweight, weighing only 23.4 pounds fully empty. It also features caster wheels with three in front to allow for easy maneuverability and placement.

This swamp cooler puts out 470 to 659 cubic feet of air per minute and features a washable and reusable active carbon filter. This filter not only removes a lot of physical contamination from the air, the activated carbon also removes odors. Any volatile organic compounds (VOCs) that cause a bad odor are adsorbed by the carbon to eliminate them. The water tank is a little smaller than others, able to hold 5.3 gallons of water. There is also a port to allow you to connect a hose for continuous water flow. If you do this, keep the water at a trickle to avoid overflowing the tank.

One of the best features of a swamp cooler is that it can pull double duty. There’s no need to put it away as the seasons change because it can also act as a humidifier. During the summer months, the damp panels add moisture that cools you down as you point the cooler directly at your seating area. During the winter, point the cooler to another area of the room and let it naturally humidify your home, keeping a handle on static electricity and helping soothe sickness-irritated nasal passages.

When it comes to energy use, this evaporative cooler is a lightweight, pulling only 230 watts during normal operation. Of course this is just a fraction of the energy that an air conditioner uses, plus you don’t have to worry about Freon or other refrigerants being released to the air. This cooler comes with a timer to allow you to set the cooler and walk away, as well as a remote control. There is also a manual control on the unit, letting you set the humidification and fan settings as well. This smaller unit has a single honeycomb pad that pulls dry air in from the back and blows moist cool air out the front.


  • Dimensions: 14.6 x 18.9 x 32.9 inches
  • Weight: 23.4 pounds
  • Rated CFM: 470 to 659
  • Filter: Washable and Reusable Active Carbon
  • Fan Speeds: 4
  • Water Tank Size: 5.3 gallons
  • Ice Compartment: Yes
  • Electrical Requirements: 230 Watts, 120 Volts
  • Warranty: One Year Limited

Evaporative Cooler Buying Guide

Best Evaporative CoolersNow that you’ve read reviews of the best evaporative coolers, you probably have a basic understanding of how they work and what they’re good for. Now it’s time to delve a little deeper into the operating principles behind an evaporative cooler, as well as get some tips on how to purchase one. We’re going to talk about the best places to use an evaporative cooler as well as how to get the best sized cooler for your needs. Finally, we’ll talk about maintenance and safety; these are two important topics that sometimes get neglected.

How Do Evaporative Coolers Work?

Evaporative coolers are also called swamp coolers by many people. They primarily work on the principle that as moisture is added to air; the air will naturally drop in temperature and feel cooler when it hits your skin. So what happens is a fan will draw warm air in oh, and then blow it over cooling pads that have water making them damp.

These cooling pads are the heart of any evaporative cooling system. In most cases, these pads are made of multiple sheets of paper that are shaped and formed in specific ways. The paper is treated with a chemical that prevents the paper from rotting and ensures that it also is still able to hold moisture. A water reservoir continues to add moisture to these pads. This can either use a special spraying system or rely on natural wicking.

When the fans cause air to be drawn through the pads, evaporation results as the dry air encounters the water. This process works best as the air is drier. So, this type of cooler is best for areas where you have dry heat. This means areas like the southwestern United States in Arizona, New Mexico, and other arid areas. This type of cooler also works in the Midwest quite effectively. An evaporative cooler can also work in hot humid environments, but the level of effectiveness will definitely be less.

Best Places to Use an Evaporative Cooler

Best Evaporative CoolersWhen we talked about the best places to use an evaporative cooler, we are talking about your home. The thing about evaporative coolers is that you can use them both indoors and outdoors. Of course, the more air movement there is the less area that an evaporative cooler will affect outdoors. That’s because the wind will blow away the cool moist air and replace it with hot dry air faster.

When it comes to putting your evaporative cooler outdoors, you want to look for an area that is out of the Wind. You still want plenty of air circulation to ensure that the air doesn’t get too humid. A section of the patio that is surrounded on two or three sides is an ideal location. The wind will not blow away the cooling effect, but there’s still open area for humidity to disperse. The most important concept here is air circulation.

Carrying this notion indoors, then it’s easy to see that you want to put your evaporative cooler someplace where it can draw hot dry air in and a way for the cool moist air to vent. Place your cooler by an open window and open the door to allow a cross Breeze that way. Or reverse the locations, and create a cross Breeze where hot dry air is pulled from the rest of the house.

A third option is where you want to use the evaporative cooler in the winter time to humidify your home. In this case, you still want air circulation. However, it’s not necessary to vent the moist air because you want it to stick around. Instead the most important thing here is to monitor the humidity, either with a home thermostat or weather station, or using the humidity controls on your own evaporative cooler.

Why Get an Evaporative Cooler?

Best Evaporative CoolersYou might wonder why you should choose an evaporative cooler. After all, you could just get an air conditioner or a series of fans. Here are three reasons why getting an evaporative or swamp cooler is a great idea.

  1. You are going to save money. Operating a swamp or evaporative cooler is significantly cheaper than operating an air conditioner. Consider that most evaporative coolers use around 250 Watts. A central air conditioner can pull as much as 3500 watts. Looking at the two numbers, it’s easy to see that you are going to be spending about one 14th of the cost to run an evaporative cooler in your room versus a central air conditioning unit. And for comparison, a large window air conditioner uses 1440 Watts. Either way, you’re going to be saving money.
  2. The second reason why you should get an evaporative swamp cooler is it’s easy to install. Rather than install ductwork for central air conditioning system or having to Lug a 75 lb. air conditioner and put it in a window, an evaporative cooler just rolls into place and plugs in. This can save you a lot of muscle strain and pain as well as money when it comes to the cost of installation.
  3. The third reason is because swamp coolers can pull double-duty. Not only do they cool you off during the summer time, they also add moisture to the air. As a wick style humidifier, an evaporative cooler saves you from having to purchase a humidifier separately. And this doesn’t just work during the winter months either. You can run your evaporative cooler anytime you need moisture in the air. It could because you caught a summer cold, or because your allergies are acting up.
  4. As a bonus reason, as you will soon see, evaporative cooler require a lot of air changes in a space. This means that with the constant air circulation, you’re getting a high turnover of air, which means that the air quality is going to go up. This helps clear out smoke, odors, and free-floating allergens.

Getting the Right Size Evaporative Cooler

Making sure that you have the right size evaporative cooler for your home is extremely important. If the cooler is too small, then it’s not going to cool the room you’re in, and it’s kind of a waste. If you get a cooler that’s too large, then it can overwhelm the room and create an uncomfortably humid climate. The best way to ensure that you get the right size evaporative cooler for your room is to make sure that you’re getting the right CFM rating. CFM stands for cubic feet per minute oh, and is a rating for the amount of air that the evaporative coolers fan can push. As a general rule of thumb, the higher the CFM rating, the larger the area the cooler can cover.

● How to calculate CFM – the first part of calculating the needed CFM for your room is to measure the dimensions. Essentially, you want enough air moving through your room to create air changes. Depending on the type of room, you want a different number of air changes per hour. For example, a bedroom should normally have 5 to 6 air changes per hour. On the other hand, a laundry room should normally have 8 to 9 air changes per hour. In a public building, restrooms normally need 10 to 12 air changes per hour.

We say normally, because swamp coolers increase the recommended air changes per hour by a factor of 5. This is because of the increased humidity that evaporative coolers add to a room. So then, a bedroom should have 25 to 30 air changes per hour when using an evaporative cooler. Here is a chart showing the normal common residential and business air changes and the recommended swamp or evaporative cooler air changes.

Room Type Recommended Air Changes Recommended Swamp Cooler Air Changes

Basement 3 to 4 15 to 20

Bedroom 5 to 6 25 to 30

Bathroom 6 to 7 30 to 35

Family or Living Room 6 to 8 30 to 40

Kitchen 7 to 8 35 to 40

Laundry 8 to 9 40 to 45

Public Restroom 10 to 12 50 to 60

Public Retail Store 6 to 10 30 to 50

Public Dining Area 8 to 10 40 to 50

Office 6 to 8 30 to 40

Office Conference Room 8 to 12 40 to 60

Office Copy Room 10 to 12 50 to 60

Office Computer Room 10 to 14 50 to 70

So once you know how many air changes your room should have, then you can calculate the CFM. Measure your room’s width, length, and height. This will give you your room’s total volume. Make sure that you are doing this in feet. For example, if you have a bedroom that is 8 feet high, and measures 10 feet by 12 feet, you have a total volume of 960 cubic feet.

Looking at the above chart, you see that bedroom should have 25 to 30 air changes per hour. This tells you that your bedroom should have 28,800 cubic feet of air traveling through it per hour. To find the recommended cubic feet per minute, we divide this number by 60. That gives you a recommended CFM rating of 480 for an evaporative cooler for this size room. Here is a chart that gives you in general the square footage and recommended CFM for evaporative coolers.

Room Size Recommended Cubic Feet per Minute Rating

0 to 250 sq. feet 200 to 750 CFM

251 to 500 sq. feet 751 to 2,000 CFM

501 to 1,000 sq. feet 2,001 to 4,000 CFM

1,001 to 2,000 sq. feet 4,001 to 7,500 CFM

2,000 sq. feet and up More than 7,501 CFM

Keep in mind that you should adjust these numbers up under the following conditions. Add 20% to the total CFM rating if your ceilings are higher than the normal 8 feet. Additionally, if your room has southern facing windows in the Northern Hemisphere, or there are more than 2 people in the room, add 20%. You will also want to adjust upward if you have appliances in your room that generate heat like a stove or oven.

Six Important Features for Evaporative Coolers

Best Evaporative CoolersThere are a lot of different features that evaporative coolers come with. But when it comes to the most important ones, you can definitely narrow them down to six specific features. These are the features that can make or break an evaporative cooler for your home. They can turn an otherwise useful Home Appliance into something that you just keep in the closet and don’t talk about.

  • Water Tank

The water tank is one of the key facets to a swamp cooler. If the water tank doesn’t hold enough water, then you constantly have to refill it. And that is a pain. On the other hand if a water tank is too unwieldy or difficult to fill, that’s a problem as well. Here are three specific things you should look at for your next evaporative cooler.

a. Capacity – capacity is important because the more water that your evaporative cooler will hold, the longer it can run without refilling. This becomes less important if you can attach a hose to it of course. But even then, you have to learn how much water you can leave trickling into the evaporative cooler before it overflows. Turn the spigot on too high, and you end up with a small flood. Turn it on too low, and your water tank will dry out. Look for a water tank with a capacity of 8 to 10 gallons. This will give you enough space to learn the foibles of your evaporative cooler as you learn how much water to add. Here is a chart that shows you the best sizes for the various types and sizes of rooms.

Capacity Room Size

1 to 3 gal. Small rooms such as kitchens, offices, or smaller bedrooms

3 to 7 gal. Medium rooms such as living rooms, sun rooms, or dens

7 to 12 gal. Large rooms such as larger bedrooms or multiple smaller rooms

12 to 16 gal. Outdoor spaces such as areas around decks, pools, or patios

Above 16 gal. Extra Large Commercial and Industrial spaces

b. Fill Design – when it comes to the fill design, there are a couple of things to keep in line. First, make sure that it is easy to access. The best tanks are completely removable. Additionally, make sure that the interior of the tank is easy to access. This will make it easier to clean. Next, ensure that when it comes to actually adding water, it makes sense on how to do it. If there’s a tiny hole that you’re expected to funnel 8 gallons of water through, that’s a bad sign. Of course, when it comes to fill design, the best is when you have a hose attachment point.

c. Ice – ice is something that is nice to have on an evaporative cooler, but is not completely necessary. And ice tray on the top of the unit will dramatically cool down any air that has blown past it. Of course, ice melts, and the cooling effect then goes away as the melts warms up to ambient temperature. Look for an ice tray that has a drain or is removable.

  • Adjustable Fan Speeds

Being able to adjust a fan speed means that you can control how much air is pushed through as well as how quickly your water reservoir empties. At least two speeds as preferable, but three gives you even more options. Also, if you can, check the noise levels of the fan as it Cycles through its various speeds. If this isn’t something you can observe in person, check YouTube. There are usually video reviews of whatever evaporative cooler you are looking at. These video reviews will quite often display the unit when it’s running so you can get a feel for the noise level.

  • Pad Types

For the most part, the absorbent pads that are used in most evaporative coolers are made of cellulose that is treated with various additives to prevent rot. The primary difference lies in the style of pad and how the air flows through them. Some are honeycomb Style which has open cells that the air flows through and picks up moisture on six sides. Others have smaller openings much like looking at a piece of cardboard from the end. You want an opening that is large enough to allow enough air through without taxing your fan. But you don’t want that opening so large that air is getting through without picking up evaporative moisture. Another consideration is that the smaller the channels that the air passes through, the faster they will get clogged by mineral residues from hard water When a moisture pad has been clogged by mineral deposits, it has to be changed. So the longer you can go between pad changes, the less the operating cost is for that particular evaporative cooler.

  • Louvers

Louvers are the fins that the air travels through. You want lubbers that are wide enough to allow good airflow through, but you also want them close enough together that you can adjust them and direct the airflow where you want it. It’s also important that the louvers are not so close together that it is difficult to clean them. Check the spacing on both the intake and the out take sides.

  • Filtration

Having a filter on your evaporative cooler is a great idea. While you may not be able to filter as closely as the MERV 7 filter that you have in your HVAC system, being able to remove larger contaminants in a washable and reusable filter is nice. There are different types of filters that you can get. They range from course mesh filters that are only good for removing hair, to HEPA level activated carbon filters that can remove allergens and foul odors as well. Keep in mind that most HEPA filters are not washable and reusable oh, so the replacement costs must be calculated and can be a little high. As an alternative, you can look for filters that are washable and reusable and are billed or advertised as “HEPA-level” filters.

  • Controls

Of course, it doesn’t do any good to have the best filters, pads, and water reservoir if the controls are confusing. Take a look at the controls on any evaporative cooler to ensure that you understand how to use them. You also want to ensure that they have all the features that you’re looking for. Some of the nice other features include a fan only setting that bypasses the evaporative pads. Another feature runs the fan but turns off the water pump so you can dry the absorbent pads to lengthen their effective life cycle.

Cleaning and Maintenance of an Evaporative Cooler

When using a swamp cooler, it’s important to keep the unit clean. The cleaner you keep your evaporative cooler, the longer you will be able to use it. Here are some specific tips on keeping your evaporative cooler clean and getting the most out of it.

Keep in mind, that evaporative coolers hold large amounts of water and sometimes the water stands still. That means that you have to clean the reservoir tank to avoid a buildup of mold, or mildew. Failure to do so can cause mold spores to go flying around which will not only spread mold around your home or patio, it will also aggravate any allergies you or your family has.

When cleaning your water reservoir, use an antimicrobial protective spray or some other form of antifungal cleaner. In a pinch, you can also use a standard bleach solution to clean the interior. Just be sure not to rinse and clean the reservoir tank thoroughly after using bleach to prevent damage to your absorption pads.

Speaking of absorption pads, they will need replaced at least once a season, depending on the hardness of your water. In some cases if mineral scale builds up too much, you will need to replace the pads more often. While you could use distilled water to prevent any mineral buildup, the sheer volume of water that in evaporative cooler uses makes this extremely cost-prohibitive. Inspect your absorption pads every couple of weeks when you clean out the water reservoir to check and see if it needs replaced.

One of the last areas that you need to monitor is the filters that your evaporative cooler comes with if any. Make sure to wash these filters using warm soapy water at least once a month. Additionally, dry them thoroughly before replacing them. Additionally just because they are washable and reusable does not mean that they last forever. You will likely need to replace them at least once a season. A way to save money when replacing is to use a generic alternative.

When cleaning the exterior of your evaporative cooler, use a mild detergent solution. Avoid bleach or ammonia as it can discolor or stain the outside. Don’t use any harsh abrasives, especially on plastic because it will definitely scratch and Mar your cooler. If you do need to use a more powerful cleaner than just mild dish soap and warm water, test the cleaner on an inconspicuous spot to see how badly it will stain if it all.

Safety Tips for your Evaporative Cooler

When it comes to being safe with your swamp cooler, common sense is the basic rule of thumb. Your swamp cooler uses water, but also runs on electricity. And water and electricity do not mix well, at least as far as your safety is concerned. Here are some basic safety tips for your evaporative cooler.

1. Use a GFCI

A GFCI, or Ground Fault Circuit Interrupter is a type of plug that has a circuit breaker mechanism inside the plug itself. When a surge or short is detected, such as when electricity encounters water, the plug shuts off power. This helps ensure that if you are shocked, the plug turns itself off.

2. Ensure Adequate Ventilation

Most evaporative coolers are not meant to be used indoors because of the high volume of air that they move around. But that doesn’t mean that they can’t be used indoors as long as you take appropriate precautions. One of the most vital is ensuring that wherever you put it has adequate air to draw and vent.

3. Watch The Cord

When you place the evaporative cooler, watch where you place the cord. Make sure that it stays out of the way and does not present a trip hazard. Additionally you don’t want to put it under a carpet or a rug wear it can be stopped on and inadvertently damaged or frayed without you seeing it. If the cord should ever be frayed or damaged, stop using the evaporative cooler immediately and have the cord replaced.

4. Follow Manufacturer Recommendations

It’s important that you read the instruction manual that comes with your evaporative cooler. Every manufacturer will have different recommendations regarding the care of their specific product. In some cases failure to follow these recommendations can cause any warranty to be voided.

Evaporative Coolers Comparison Chart

Evaporative CoolersCFMFan SpeedsWater Tank SizeWeightRating
Hessaire MC37M Portable3100210.3 gallon41 pounds8
Peodelk Compact EvaporativeN/A3420 mL27.16 ounces8
Honeywell CO30XE Portable Evaporative525 to 72937.9 gallons24.9 pounds8
Duolang DL-4501 Portable Evaporative2647310.7 gallons41.9 pounds7
Honeywell CL201AE Portable Evaporative470 to 65945.3 gallons23.4 pounds7


Hopefully now you have a thorough understanding of how evaporative coolers, or swamp coolers, work. With this information in hand, you can now shop for one with confidence, knowing that whatever model you choose will work best for you and your given situation. If you have any questions, please feel free to contact us. Our staff of dedicated and knowledgeable Consultants is ready to help answer any further questions you may have. Our goal is to help you in your shopping and ever for whatever fan or cooling system you choose.