In summer, evaporative coolers are very advantageous: when the temperature in a house or office becomes unbearable, nothing is better than a refreshing breeze. However, installing an air conditioner or air handling unit is too complicated, as the structure of a building may have to be changed and the exhaust hose of the air handling unit must first be routed outside in a complicated way.
In this evaporative cooler test 2021 we will help you find the right air cooler. We support your purchase decision by listing and explaining the different types of evaporative coolers.
- 1 Weekly newsletter with the best personal finance tips
- 2 Summary
- 3 The Best Evaporative Coolers: Our Choices
- 4 Buying and evaluation criteria for evaporative coolers
- 5 Decision: What types of evaporative coolers are there and which is the right one for me?
- 6 Guide: Frequently asked questions about evaporative coolers answered in detail
- 6.1 What is an evaporative cooler?
- 6.2 How effective are evaporative coolers?
- 6.3 How much does an evaporative cooler cost?
- 6.4 What are the advantages of an evaporative cooler?
- 6.5 Why should I buy an evaporative cooler instead of an air conditioner?
- 6.6 What are the alternatives to an evaporative cooler?
- The fan generates an air flow and directs the air through the cooling battery. In this way, the air is actually cooled. At the same time, a good unit also increases the humidity. Even if the room temperature does not drop according to the thermometer, it still feels more pleasant.
- Good units can lower the room temperature by a few degrees. The smaller the room, the better the effect. They also fill the room air with moisture and swirl it around. As the water evaporates on our skin and creates a cooling effect, the perceived temperature drops.
- Air conditioners use special refrigerants that work in a closed circuit to cool the intake air. Compared to air coolers, more energy is consumed (heat is generated). The technical structure of the equipment is reflected in the price. Therefore, the evaporative cooler is a good and cheap alternative to air conditioners.
The Best Evaporative Coolers: Our Choices
Buying and evaluation criteria for evaporative coolers
The principle of operation is unknown, and the credo is: when you get out of the swimming pool, you feel cold at first - hardly influenced by the outside temperature. The feeling of cold is only caused by the evaporation of the liquid film on the skin. This is precisely the advantage of the evaporative cooler:
Evaporative coolers work more selectively than air conditioners, which largely cool the temperature of the entire room.
Water is drained from the water tank and pumped through the circulation system. Through evaporation on the user's skin, the generated humidity creates a cool feeling. The colder the water in the water tank, the stronger the cooling effect. The circulating water in the equipment is the main difference to conventional fans.
In addition, three built-in filters ensure that dust particles are filtered out of the air. It is important that the initial indoor humidity is not too high to get the best performance from the evaporative cooler. The criteria you can use to compare evaporative coolers include:
Weight and size
Evaporative coolers are mobile devices. Therefore, they tend to be smaller. Nevertheless, they come in a wide variety of sizes and designs. It all depends on personal taste and the space available. If the room is rather smaller, a tabletop air cooler is recommended. Or an evaporative cooler in the form of a narrow, taller column.
Although conventional air conditioners usually consume a lot of electricity, air coolers are relatively economical.
However, the following also applies: The higher the cooling and circulation capacity, the higher the electricity consumption. When buying, make sure that the unit has an energy-saving mode. For air coolers, "energy-saving mode" usually means the lowest fan level. Air coolers save more electricity than other air conditioners.
Due to their simple construction of water tank and fan, air coolers can reduce the room temperature by a few degrees Celsius at most. Since the cooling capacity is strongly dependent on the circulation capacity, this must also be taken into account.
The larger the room, the higher the cooling and circulation capacity should be. For most units, it is up to 2,000 watts, only a few units have an even higher cooling capacity.
Also note that ice or cold water heats up quickly depending on the room temperature. To maintain the cooling effect, you must change cold water or ice regularly.
Compared to classic air conditioners, air coolers are usually very quiet. However, a higher output usually means a greater operating noise. Make sure to compare the decibel information of the manufacturers.
You may already be familiar with classic air conditioners: the cooling circuit uses chemical refrigerants. If the chemical refrigerant leaks out of the system, it can endanger your health. The evaporative cooler, however, has no chemical reagents. Here, only cold water, ice or cooling batteries are needed, and you have easy maintenance.
Decision: What types of evaporative coolers are there and which is the right one for me?
In the following table you will find the advantages and disadvantages of evaporative coolers.
|Type of evaporative cooler||Advantages||Disadvantages|
|Evaporative cooler with Peltier element||small size, low weight||usually compressor|
|Evaporative cooler with HEPA filter||removes pollutants||more expensive|
|Evaporative cooler with ioniser||no additional filter material||ozone in small quantities as a by-product|
|Evaporative cooler with water/ice/cooling batteries||the more water, the more capacity||more expensive to maintain|
|Evaporative cooler with rechargeable battery||-||-|
|Evaporative cooler with dehumidifier||specific value setting||not mobile if line available|
In the following section, the different types of evaporative coolers are explained in more detail.
Guide: Frequently asked questions about evaporative coolers answered in detail
In our guidebook you can read frequently asked questions about evaporative coolers. And we try to answer them as best we can.
What is an evaporative cooler?
The temperature can be controlled by the airflow intensity of the fan. The size of evaporative coolers depends on the amount of hot/cold air they can exchange per minute and the energy required to operate them. Evaporative cooling works best in dry climates because it evaporates liquids more easily.
How effective are evaporative coolers?
How much does an evaporative cooler cost?
Of course, the price also depends on the filter systems. Before buying, it is important to find out what types of evaporative coolers there are. To do this, simply scroll up again to the different types of evaporative coolers.
What are the advantages of an evaporative cooler?
|Advantages of evaporative coolers||disadvantages of evaporative coolers|
|They work on the principle of natural evaporation||they have only low cooling potential.|
|No special refrigerant is required||It is mostly only a perceived and not measurable temperature decrease.|
|They have a simple structure||Efficiency decreases with increasing humidity.|
|They are easy to transport||No dehumidification of the air is possible except with an integrated dehumidifier.|
|They have lower energy consumption and an energy-saving cooling strategy.||They are only effective at low humidity.|
|The low noise level makes them suitable for bedrooms||They are not recommended in warm and humid climates.|
|They are cost-effective and have low investment and operating costs...|
Why should I buy an evaporative cooler instead of an air conditioner?
The air conditioner uses the refrigerant circulating in the units to operate. In short, the refrigerant is pumped through a closed circuit that alternates between liquid and gaseous states. The work of the air cooler is much simpler. The core is a fan combined with a water tank to cool the air.
Water is pumped or sucked into a special cooling pad or mat, and the fan pushes air through the pad or mat. This cools the air flowing from the unit into the room.
What are the alternatives to an evaporative cooler?
The following table lists the advantages and disadvantages of evaporative coolers and their alternatives.
|evaporative cooler||air conditioner||fan|
|constant cooling||constant cooling||fast, spot cooling|
|not very cost-intensive||cost-intensive||cheap|
|humidification of air||very dry air||-|
|portable||directly mountable or portable||portable|
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