What is a evaporative cooler?

An air conditioner that uses evaporation to reduce the air temperature is known as an evaporative air cooler. As water evaporates, it changes from a liquid to a gaseous state. In doing so, the temperature of the water decreases, as the higher energy particles leave the water first. This explains why a damp cloth on the forehead on a hot day is pleasant, since it cools the head as the water evaporates.

When it comes to the air in your home, the evaporative cooling process works on the same scientific principles. Evaporation, a simple procedure, can help reduce air temperature in a dry environment. If you've ever sprayed air around you to feel cooler on a sweltering summer day, you may have experienced this firsthand. Evaporative coolers apply the same principle, but add technology to make the process more effective when spraying into a room.

How does it work?

To effectively reduce the air temperature in your home, an evaporative cooling system automates basic evaporation. The machine usually consists of a fan, a thick pad, a water reservoir and some additional tools to fine-tune the results. The fan draws hot, dry air into the machine and spreads it across the cooling pads. These pads have several layers to expand their surface and absorb water from the reservoir. Water droplets on the surface of the pads evaporate as hot air passes over them, which reduces the air temperature inside the cooler, often by as much as 20 degrees. The fan then circulates cool air around the room, so you can enjoy the coolness on a hot day.

Evaporative coolers can also incorporate other functional components. Many use air filters and pads designed to improve air quality, reducing allergens and preventing mold and mildew, which is crucial for anyone with allergies or other respiratory problems. Although not strictly necessary, a water pump can speed up absorption in the cooling pad. Some versions offer the user the option of adding an ice pack for the purpose of further cooling the air the fan blows. In addition, it has other useful functions such as oscillation, a variety of speeds and a remote control.

If it fails, it is because some of its components are damaged, so we recommend buying new evaporative cooler accessories and replacing them.


Energy efficiency and sustainability are the two main advantages. Both stem from the fact that they consume much less energy than standard air conditioners, which can consume up to seven times more. This is because, in most cases, evaporative coolers only have to run the fan that pulls air over the cooling pad. In contrast, conventional air conditioning systems use a compressor to compress the liquid refrigerant into a smaller area before moving it through a heat exchanger to remove the heat from the air, so this procedure consumes a lot of electricity to complete.

So with this evaporator you can use less energy, which reduces your carbon footprint and lowers your utility costs. These do not use chemical refrigerants, which are harmful to the ozone layer.

Guidelines for getting the most from your evaporative cooler

If you want the most effective cooling, you'll need to change the way you use evaporative coolers because they work differently than conventional air conditioning units. For the coolest, coziest air imaginable, try these suggestions:

  • Open the windows

Evaporative coolers require a constant supply of cool air, unlike conventional air conditioners, which require you to try to keep your home tightly sealed to keep cool air inside. Hot, dry air can be drawn into the air conditioner through an open window near the intake fan to evaporate quickly. To keep your home from feeling too humid, open windows also allow the moist airflow produced by the cooler to escape.

  • Renew the water supply

To prevent mold and mildew in humid areas, empty and clean the reservoir if you will not be using your cooler for an extended period of time. This will keep it working properly and keep the air in your home clean.

  • The correct refrigerator capacity

Before buying the cooler, check the recommended square footage and measure the room to determine the right size. If the square footage is too large, you may need more than one; conversely, directing the fan to where you are sitting may be enough to achieve a comfortable temperature drop.

  • Omit ice

The evaporation process is slowed down by adding ice to the water, which can make it less cold unless it is made with an ice pack as a reservoir. Interestingly, adding ice will prevent it from working properly because the water needs to warm up a bit before evaporating.