Evaporative Air Coolers Summary

They can say no if you ask an older relative if they have heard of an evaporative cooler. Yet odds are they will acknowledge the philosophy behind the technology. Before there was air conditioning or other colder styles, individuals would sleep on a screened porch outside and try to keep comfortable at night. In an effort to cool the temperature, they will also hang damp sheets over the windows. It was refrigerated as the hot air went through the sheet. And then the cold air would flow steadily, relieving the sleepers of some of the sun.

In the type of evaporative coolers, the same concept persists today. For people living in humid, dry climates, these machines are great cooling mechanisms. They are often called by the name of swamp coolers, although it can be confusing since in swampy, wet environments, they simply won't operate at all. The name originally derived from the way evaporative coolers simply bring moisture to the air. But in fact, evaporative coolers tend to operate with dry, hot air so some of the water must be able to pick up (evaporate) in order for the air to be cooled. If the air is still saturated, no more water will be absorbed and no cooling will occur. Read this article about best air cooler in India.

Here's how evaporative coolers work; a fan that draws the hot dry air into the cooler, where it is passed through moist pads, composes the unit. A pump that circulates water through the unit keeps the pads wet. If the dry air picks up more of the vapor, depending on the environment, the temperature decreases, often by as much as 30 degrees Fahrenheit. The air that is colder is then blown into the room. An extra advantage to an evaporative cooler is that it is still filtered by the pads that cool the air. Dirt, pollen, allergens and other contaminants are trapped in the fibers of the pads as the air flows through the pads. And you're going to breathe better and healthier air.

In an Evaporative Refrigerator, an ancient idea seeks new life

There's one more factor we haven't discussed yet, if you're curious whether you should pick an evaporative cooler over a regular air conditioner. The cost of maintaining an evaporative cooler can be as little as 1/10 of the cost of using an air conditioner. In fact, if they install an evaporative cooler, several municipal power providers in hot, dry climates would actually give customers a discount because they understand the technology's reliable, efficient cooling capability. To see if they are providing the rebates, call your local power provider and ask if they have any details about the efficacy of an evaporative cooler in your state.