2 Frequently Asked Questions about Evaporative Coolers

Portable evaporative coolers are one of the oldest forms of air conditioning available today, providing an efficient and effective cooling alternative to conventional AC units. These appliances can be very effective at cooling indoor areas in dry climates, and can be purchased in various sizes depending on your cooling needs.

If you are unfamiliar with these units, here are answers to some common questions about evaporative coolers to help you understand how they work and how you can get the best performance out of them.

Why are these appliances only effective in hot, dry climates?

Evaporative coolers utilize a simple, yet effective cooling mechanism where hot, dry air is pulled into the unit and passed thought a moist cooling pad that draws water from an on board water reservoir. The heat in this air is absorbed into the cooling pad, turning water into a fine, cool mist that is then released into the space to be cooled.

Due to this mechanism of injecting moisture into the air to achieve cooling, the conditions in the surrounding air need to be dry and hot for the appliance to function properly. If used in typically wet and humid areas, the unit will not be able to inject sufficient moisture amounts into the already saturated air, so the cooling effect will be minimal. Additionally, injecting more moisture into already humid air can make your space feel hotter despite the cooling effect of the mist being added from the evaporative unit.

These appliances are also most effective in dry, hot climates during the afternoon when humidity is at its lowest and room temperatures at their highest. You could thus opt to use your conventional AC unit for cooling in the mornings and evenings and switch to your evaporative cooler in the afternoons to save on utility bills.

How can I improve the performance of an evaporative cooler?

Even when used in ideal climate areas for their optimal operation, evaporative coolers still require that several steps are taken to achieve optimal cooling.

It is very crucial that you ensure a fresh supply of air in your home for the appliance to work optimally. This is because a lack of air would cause humidity levels in the room to build up, eventually causing indoor temperatures to rise. Be sure to leave your windows or door open to ensure your indoor air does not become stale and humidity levels remain relatively low.

The next step is to keep up with maintenance. Periodically replace the cooling pad in the unit to maintain optimal cooling, and refill the water reservoir whenever it gets low to keep the cooler in top cooling shape. For more information, talk to a professional like Shivani Refrigeration & Air Conditioning.


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