What Are Evaporative Coolers? Here’s Everything You Need to Know

What Are Evaporative Coolers? Here’s Everything You Need to Know

Looking for a way to beat the heat? If you do not have a central air conditioning system in your home — or if you do but are researching more environmentally friendly or affordable options — you might be wondering if evaporative air coolers are right for you.


The answer is … it depends.


Understanding how evaporative coolers work is a crucial part of figuring out if one will work well in your home. If you are new to evaporative cooling, there is a lot to learn. Here is everything you need to know about how evaporative coolers work — and how to decide if you should invest in one.

What Are Evaporative Coolers?


An evaporative air cooler is a type of air conditioner that works by harnessing the power of evaporation to cool air temperatures. When water evaporates, it turns from liquid to gas. As it does so, the highest-energy particles leave the water first, and this leads to a drop in temperature. This is why a moist cloth on your forehead feels good on a hot day — it is actually helping to lower your head temperature as the water evaporates.


The same scientific principles apply to the evaporative cooling process when it comes to your home air. In a dry environment, the simple process of evaporation can help lower the temperature of the air. You may have felt this for yourself if you have ever misted the air around you to feel cooler on a hot summer day. An evaporative air conditioner uses the same idea, but it adds technology to make the process more efficient — and less messy — than just spraying a room with water and hoping for the best.


How do Evaporative Coolers Work?


An evaporative cooling system takes basic evaporation and automates it to efficiently lower the temperature of the air in your home. In general, the machine will consist of a fan, a thick pad, a water reservoir and some additional controls for fine-tuning the results. The fan draws dry, hot air into the machine and across the cooler pads. These thick pads absorb water from the reservoir and have many layers to increase the surface area. As the hot air crosses the pad, the water molecules on the surface evaporate, which causes the air temperature inside the electric air cooler to drop — often by as much as 20 degrees. The fan then blows that cold air into your room, where you can enjoy the chill on a hot day.


Evaporative coolers can have other useful parts built into them as well. Many utilize air filters and pads that are designed to improve air quality by reducing allergens and minimizing mildew growth — an important consideration for anyone with allergies or other respiratory concerns. A water pump, while not strictly necessary, can streamline the absorption into the cooling pad. Some models offer the option of adding an ice pack to further cool the air the fan blows out into the room. Varying fan speeds, oscillating functions and remote control are also useful features.


A portable air cooler is a great way to see if evaporative cooling will work in your home without making a big investment upfront. Portable coolers come with wheels to easily move them from room to room for a little extra chilling exactly where you need it. You can also use these outside as long as you can reach an outlet to plug them in. This makes portable evaporative coolers welcome accessories to a picnic, pool party or any other outdoor gathering where people would appreciate a cool breeze. They still work best in dry places, but you won’t have to worry about any special venting (as with portable air conditioners) or humidity build-up (as with indoor evaporative cooler use). If you’re interested in experimenting to see what evaporative coolers are all about, a portable version is a fine way to get started.

A large industry ceiling fan pushes air down to the living level by pulling from the air that it has above the blades to work with. The air is moved to the floor, and then recirculated back up to above the blades after it spreads across the room and moves back up the walls. Thus, moving back above the blades to repeat the process.


If a fan does not have enough space between the blades and walls or any other solid obstruction, there will be a vacuum affect created above the blades, and there will be no air for the fan to continue to circulate. With no air to circulate there will be no breeze below the ceiling fan.


Currently, a number of works and industries operate in a state of polluted air, which is not well ventilated. Therefore, the necessary need is how to better deal with the environmental situation. Industrial exhaust fans are the solution to this requirement. This is an item with air circulation function to eliminate hot air, odors … This industrial fan has a large capacity and wind flow. They are suitable for areas with large acreage such as factories, warehouses, breeding facilities.


Electric heaters, the device for heating rooms that converts electric current to heat by means of resistors that emit radiant energy. Resistors may be composed of metal-alloy wire, nonmetallic carbon compounds, or printed circuits. Heating elements may have exposed resistor coils mounted on insulators, metallic resistors embedded in refractory insulation and encased in protective metal, or a printed circuit encased in glass. Fins may be used to increase the area that dissipates the heat. Home electric heaters also are used for domestic central heating and for materials processing in the industry.