Evaporative Air Cooler

Evaporative Air Cooler

Evaporative air coolers utilize basic evaporation to decrease the temperature of your home’s air. They’re most effective in arid regions, where water molecules can separate and float much easier than in humid air.

To determine the optimum operating conditions for your evaporative cooling system, you can use a psychrometric chart to identify the dew point and relative humidity.

How They Work

Evaporative air coolers use water to cool your space. It draws in hot dry air, fanning it through moist pads and adding humidity to the air, cooling your space without needing to turn up the air conditioning. This means you can save on energy costs. The only catch is that the room must be well ventilated to avoid over-humidification or odors building up in the air.

The pads are kept wet by a pump in the water reservoir and the fan pulls air over the pads, which causes it to vaporize or turn into a gas. This cools the air that gets blown out. It takes a lot of energy to bring water to boiling temperature, so turning it back into a gas uses that same amount of energy, which is why the air feels cool.

Coolers can be wall or roof mounted, depending on the location and size of your home or workplace. They can be ducted or unducted. Ducted systems are typically used in larger homes, where air needs to be directed to different rooms and hallways.

If your evaporative cooler is ducted it should be properly sized to ensure that the correct amount of cooled air is blown into each room. It is also important that the ducts are well maintained to prevent pressure problems and leaks.


Evaporative cooling is a simple, affordable way to cool your home or business. They’re easy to install and use less energy than refrigerated air conditioners. They also help to keep humidity levels low, which can help with asthma and other respiratory conditions.

In addition to their cost effectiveness, evaporative coolers are environmentally friendly and have no chemicals to emit into the air like refrigerated air conditioners do. In fact, they don’t even produce any ozone, which is a major concern in many areas.

While evaporative coolers work well in many regions, they are best suited to dry climates. The desert Southwest – including Arizona, California and New Mexico – has the ideal climate for stand fan with water spray these coolers. The low humidity there allows water to evaporate quickly and effectively.

Because of their ability to lower the temperature of the air, evaporative coolers can provide excellent cooling for small rooms and businesses such as workshops and office buildings. However, larger spaces may require a more powerful unit that has the capacity to cool the entire space.

It’s important to consider the square footage of your space when deciding on a size and type of evaporative cooler. It’s also a good idea to look at the cooling capacity, as this will help you figure out how big a cooler you need.


Evaporative coolers consume less energy than standard air conditioners, and don’t require ozone-damaging refrigerants to work. They also have much lower upfront costs than central air conditioning. They can be installed in a variety of ways: in a central location or connected to ductwork that distributes the cooled air to individual rooms. For compact homes, a central location works well; for larger houses, a ducted system is required.

If you choose to install your evaporative cooler in a ducted system, ensure that the ducts are properly ventilated to avoid recirculation of moist air. This will prevent the formation of mold and mildew in the ducts.

When installing your evaporative cooler, stand fan with water spray company check that the roof can support the weight of the unit (especially for down discharge coolers). It’s best to use a professional installer, but if you do have to DIY, make sure it’s done correctly to avoid water leaks and damage to the ceiling.

You’ll also need to install a power outlet to plug your evaporative cooler into. It’s recommended to install a safety disconnect switch for the electrical circuit.

Before fitting your evaporative cooler, remove the filter pad frames from the cabinet (you can do this by inserting a screwdriver into the slots at the base of the frame and levering downwards). Once removed, fit each frame back into place with the water channel facing upwards.


As with any appliance, evaporative coolers need some care and attention to function properly. They need to be cleaned regularly, particularly the water tank. This is a place where bacteria, germs, and even bugs like mosquitoes can accumulate. The contaminated water is then blown into the air and can be a health hazard in the house. A clean water tank will also ensure the quality of the resulting air is not compromised.

The honeycomb cooling pads need to be cleaned regularly as well. They must be drained, washed, and air-dried to keep them in good condition and avoid mildew or bacteria. A specialised bacterial water treatment can be added to the water tank to further minimise the risk of contamination.

At the end of the summer, it is important to give your evaporative air cooler a quick and thorough cleaning before storage. This includes draining and washing the water tank, removing the filter pads, and wiping down the exterior. It is a good idea to run the unit in fan-only mode for about 15 minutes before switching it off to allow the honeycomb pads to dry quickly and prevent mildew.

Regular visual inspections are also a good idea. This will let you check the workings of the machine on a consistent basis and notice any issues or potential problems early on before they become more serious.

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