Evaporative Air Cooler

Evaporative Air Cooler

Evaporative air cooler

Evaporative Air Cooler

Evaporative air coolers are an eco-friendly, energy efficient alternative to traditional AC. They are designed to cool hot, dry environments.

Evaporative cooling uses the power of water evaporation to lower air temperatures. While traditional air conditioners remove moisture from the air, this device boosts humidity levels and is a more suitable option in drier climates.

Energy Efficiency

An evaporative air cooler uses the phase-transition process of water vaporization to cool down the air. The process uses less energy than refrigeration cooling systems because of the relatively large enthalpy of vaporization. The system draws in warm air and passes it through moist pads to lower its temperature before discharging it into the room. Evaporative cooling works best in environments with access to outdoor air.

Evaporative air coolers have high energy efficiency, and they are especially efficient in areas with low humidity. They use only half as much power as air conditioners to produce the same amount of cooling. The systems are also more environmentally friendly than refrigerated cooling systems.

However, if there is an excess of moisture in the air, a coolant-based air conditioner becomes a better choice. Moisture can lead to Evaporative air cooler respiratory distress and damage to eyes and skin. In addition, moisture slows down the evaporation rate of the vaporative pad.

The energy consumption of evaporative cooling depends on the wet bulb temperature, which can be estimated from standard weather reports. A psychrometric chart can be used to determine the wet bulb temperature, and then a simple formula can be applied to calculate the cooling performance of the system. Most residential evaporative air coolers offer efficiencies of around 85%, while commercial and industrial models may achieve up to 90%.

Humidity Control

Evaporative coolers are eco-friendly and safer for the environment than air conditioners. They also do not use artificial coolants or a compressor, making them more energy efficient and cheaper than air conditioning. They can be used in many different places, including restaurants, hospitals, shops, and warehouses. In addition to cooling, evaporative coolers can also help reduce humidity and dust in the air. This makes them a great choice for people who are allergic to allergies or sensitive to pollutants in the air.

The evaporative cooling system uses special pads that are dampened with water, and as the fan blows air over these pads it gets cooled. The damp pads also filter out contaminants, leaving a cleaner and more healthy air in the room. The air that is blown out of the cooler is also conditioned, and this helps to prevent odors from building up in the house.

However, evaporative air cooling is not as effective in humid conditions. It is also not very effective in areas where there is a lot of rain, as the moisture will slow down the evaporation process.

To make the most of evaporative cooling, it is important to open windows in your home and to close curtains during the day. This will prevent the hot, dry air from entering your house and will allow the cooled air to escape freely. In addition, it is helpful to experiment with the number of windows that should be opened in order to achieve the best results.


Evaporative coolers are typically designed to operate in environments where air conditioning is not possible, such as warehouses, outdoor events and athletic facilities. They also can be used in homes that are not air-conditioned, but have access to windows or other sources of fresh air.

These cooling systems are a good choice for hot, dry climates, where humidity is low. They are not recommended for humid regions, as they add moisture to the air and may make conditions more uncomfortable. In addition, evaporative coolers are not dehumidifiers and will not remove moisture from the air in the same way as refrigerated air conditioners.

The most basic evaporative coolers have only two mechanical parts – a fan motor and a water pump. These can often be replaced or repaired at minimal cost by a DIYer, reducing the need for costly service calls to HVAC contractors. They are also much less energy efficient than refrigerated air conditioning, as they need to run constantly to cool the room.

The most powerful evaporative coolers can provide up to 4,500 cubic feet per minute (cfm) of airflow. This is significantly more than the CFM ratings of traditional air conditioners and box fans. These units require a lot of electricity to operate and are often large, cumbersome appliances. For example, the Hesseaire unit we tested uses 250W and weighs 41 pounds. It is 37 inches tall, 25 inches long and 17 inches wide, which makes it one of the largest cooling products on our list. It requires less than a third of the electricity required by a mid-sized air conditioner to cool a single room, however.


Evaporative coolers — often called swamp coolers or desert coolers — use a motor to pass dry air through wet pads. The pads draw heat from the air, cooling it and circulating it throughout the room. The system uses about a quarter of the energy a refrigerant-based AC system does to cool a home.

While evaporative coolers are more efficient than air conditioners, they do require basic maintenance several times each cooling season. You need to change the pads, clean the water pan and test the bleed-off valve (ask your manufacturer to show you how) to ensure it is working properly.

The pads, which can be fiber or rigid-sheet, disintegrate Evaporative air cooler over time, so they need to be changed periodically. Rigid-sheet pads last longer than fiber pads, but you should still check them for sagging and saturation.

The water tank in a roof-mounted evaporative cooler must be drained and flushed regularly to prevent buildup of minerals. You may also need to remove the water hose and drain the bottom of the unit as well. Standalone and window units have a plug for changing the water, and you can add a water treatment tablet to help reduce mineral deposits. Air filters can be added to a window or standalone unit, and they help improve the quality of incoming air, reducing allergies.