Evaporative Cooler: Top 5 Advantages

If you are considering buying a portable evaporative cooler (swamp cooler) to cool you down in summer, here are the top five advantages of evaporative coolers to be aware of.

Table of Contents

  1. Five Advantages of Evaporative Cooling
  2. 1. Low Running Cost
  3. 2. No Hot Air Vent Required
  4. 3. Fresh Moist Air
  5. 4. Environmentally Friendly
  6. 5. Use Outdoors and Indoors!
  7. Disadvantages of Evaporative Coolers
  8. Artificial Humidity
  9. Slower Cooling
  10. Conclusion

While on the surface it may seem like these low cost cooling devices can far outperform the more expensive to run air conditioners, there are several considerations that must first be addressed.

If you are considering buying a portable evaporative cooler (swamp cooler) to cool you down in summer, here are the top five advantages of evaporative coolers to be aware of.

While on the surface it may seem like these low cost cooling devices can far outperform the more expensive to run air conditioners, there are several considerations that must first be addressed.

For that reason, I have included some of the disadvantages of these coolers to balance the article and provide you with both sides of the argument for and against evaporative cooling.

First, let's look at the five major advantages of evaporative coolers:

Five Advantages of Evaporative Cooling

You are doubtless already aware that these cooling devices are very inexpensive to run compared to air conditioners of similar cooling power and cold air output, so we'll start with this and move on to other benefits.

1. Low Running Cost

evaporative cooler advantagesDue to the way that evaporative coolers perform their function of producing cold air without the need for any kind of refrigeration process, running a swamp cooler can work out to be very cheap.

A typical 500 CFM (cubic feet per minute) device will use approximately 100 to 200 watts of electricity to produce cold air. Compared to 1,000 to 2,000 watts for a comparable air conditioner, it is perfectly obvious how much less it costs to run.

2. No Hot Air Vent Required

Another positive benefit of the way that swamp coolers produce cold air without refrigeration is that there is no hot air produced by the process. Thus there is no need for a venting mechanism to vent hot exhaust air out of the building as there is with refrigerant-based air conditioners.

3. Fresh Moist Air

Many people that have to work in air conditioned offices or environments often complain about having dry eyes, a dry throat and some discomfort in breathing.

This problem is solved by using evaporative cooling instead of AC, since the air is naturally moist thanks to the constant evaporation of water to chill the air.

4. Environmentally Friendly

Swamp coolers don't have any refrigerant gas inside them, so there is no pollutant to end up in landfill sites.

This is a direct advantage for the environment and there is yet another huge positive. Since these coolers use so little electricity to produce old air, there is far less load on the power grid, meaning less polluting fuel needs to be used to provide that electricity.

5. Use Outdoors and Indoors!

Another amazing advantage that is tied in with the low energy consumption of swamp coolers is the fact that they work just as well outdoors as well as indoors.

They can provide a lovely cool blast of air to keep you feeling comfortable on a patio, porch or even by the pool on hit sunny days and hot, balmy evenings without you needing to worry about how much power the unit is using.

This may seem a little decadent, but when the cooler is only using 100 or so watts of energy, why not put it to good use outside as well as inside!

Disadvantages of Evaporative Coolers

If only there were no downsides to this type of cooler, the world would be a much better place being cooled by evaporated moisture!

Unfortunately, there is one major downside to these coolers and that is their inability to produce cold air in very humid climates or environments. If you live in a particularly humid climate, there is not much that you can do to squeeze any cold air from a swamp cooler.

Artificial Humidity

This problem is equally true even when you live in a dry climate but are using the cooler indoors incorrectly.

If you follow the general operating criteria for air conditioners by having all external doors and windows closed, you will create an artificially humid environment inside.

This happens because as the cooler keeps evaporating the water in its reservoir, that moisture is pushed into the air in the room. The more moisture that gets into the air, the higher the humidity will become.

At some point, if there is no way for that moisture to escape, the air will become saturated and cooling by evaporation will cease as no more moisture can be absorbed by the air.

The way to overcome this problem is to simply open a window a little at each end of the building with doors open to create a cross draft.

This will enable the air to remain dry enough to maintain absorption of moisture so that the cooling effect can continue at its maximum efficiency.

Slower Cooling

Another smaller disadvantage is that a small swamp cooler will not cool a large room in the same way that a small air conditioner will (when all the doors and windows are closed tight).

Of course, if you are sitting or standing in front of the swamp cooler, you will get a great blast of chilled air that will make you feel nice and cool. It will cool the room to some extent as well, taking time to work on larger rooms.

For this reason, swamp coolers are generally given a recommended maximum room size that they are compatible with so you don't buy one that is too small for the space you require to cool.

Conclusion

The advantages of using an evaporative cooler instead of an air conditioner in certain circumstances far outweigh the disadvantages as long as you don't try to use on in very humid climates.

The cost saving along is huge when compared to running an air conditioning unit, making this form of cooling much more agreeable to the pocket as well as to the environment.


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