How Often Should an Evaporative Cooler Dump Water?

You own an evaporative water cooler and want to make sure it’s in good operating order. Water is drained from an evaporative cooler. If your evaporative water cooler isn’t working correctly, you may need to call for help. We’ve researched for you to rest assured that your water cooler is dumping at the correct time. Continue reading to receive answers to all of your questions.

An evaporative cooler should dump water every six to twelve hours if it has a dump-style drain valve. When it shuts down, it should also dump. Once every 24 hours is the minimum guideline for dumping water.

Direct and indirect evaporative coolers are two types of evaporative coolers. Swamp coolers are another name for direct evaporative coolers. There are some variances in how these coolers work and how efficient they are. You might be interested in learning more about evaporative coolers, such as whether or not they leak water and how much water they use each day. This article will provide you with all of the information you require.

How Often Should You Dump Water from an Evaporative Cooler?how often evaporative cooler dump water

The air humidity and fan speed determine the amount of water used by an evaporative cooler. Because the water that gets into the reservoir evaporates, it’s not clear why it’s necessary to dump it so often. That is a microbial spread control method. Your evaporative cooler should dump water every 72 hours to prevent microbial spread. In practice, dumping the water once per 24 hours is the recommended minimum. Your evaporative cooler can be set in three different ways to drop water as needed:

  • Automatic

That is the most effective way to conserve water. When a specified conductivity level is reached, the automatic dump will start. That will ensure that the cooler runs at maximum efficiency. To obtain the desired conductivity level, the cooler will only drop a portion of the water.

  • Timed

After the cooler has turned off, the timed strategy will dump water for a set amount of time. This approach has also been discovered to be a waste of water. However, it is a more efficient method than the measured dump.

  • Measured

This method has been found in wastewater. After a specified volume of water has evaporated through the system, the measured option will discard the water. Because it dumps too frequently, the volume of evaporated water is not an efficient manner to dump. This dumping approach will not dump as frequently as it should if you don’t use your cooler for a few days.

Do Evaporative Coolers Make The Air More Humid?Do Evaporative Coolers Make The Air More Humid

Direct evaporative coolers raise the relative humidity in your home’s air. Swamp coolers are another name for these coolers. That does not rule out the usage of evaporative coolers in high-humidity areas, but it does mean that your home will be more humid. In high-humidity places, it might not be the ideal option. Evaporative coolers that are not connected to the exterior are known as indirect evaporative coolers. These evaporative coolers do not humidify the air.

If you reside in a humid climate, an air conditioner unit can be a better option. An air conditioner does not add humidity to the air but passively removes humidity. Because moisture can return to the air within your home, this is not the same as a dehumidifier.

Frequently asked questions:

  • How Much Water Does An Evaporative Cooler Use On A Day-to-Day Basis?

The amount of water used by an evaporative cooler depends on the humidity level in the air and the fan speed. Portable coolers can consume up to a gallon of water every hour. Up to seven gallons of water can be used every hour by a central system. Based on the number of hours your evaporative cooler runs, you can complete the math equation to discover how many gallons per day it produces.

The cooler would require 168 gallons per day if it used seven gallons per hour for 24 hours. Some people choose to operate their evaporative coolers 24 hours a day, although it is unlikely you will need to do so every day.

  • Is It True That Evaporative Coolers Leak Water?

An evaporative cooler can leak water in three different ways. Water may leak through the water pad if it is the wrong size or placed incorrectly. A faulty valve or break in the water lines linked to the cooler could create a water leak. If you have a metal cooler, it will likely rust over time. When the rust becomes severe enough, it will allow water to seep through. That is a sign that your evaporative cooler needs to be replaced.

  • When it comes to evaporative cooling, what’s the difference between direct and indirect?

Direct evaporative coolers cool and filter the air by passing it through a water-soaked pad. It also provides moisture to the air within the house. A separate heat exchanger is an indirect evaporative cooler that prevents moisture from entering the air stream that filters into your home.

Increased humidity from direct evaporative cooling may be beneficial to homes in dry climes. Swamp coolers are another name for this equipment. Because air conditioners remove moisture from the air, they are the best option for dry conditions.

In areas with a lot of moisture in the air, indirect evaporative cooling or an air conditioner is used. For all climes, the evaporative cooling system will be more energy-efficient. Unlike air conditioning units, which remove part of the humidity from the air entering your home, the indirect evaporative unit does not influence the relative humidity of the air entering your home.


Evaporative coolers can automatically dump water, which is the most efficient way to chill your home while conserving water. The other two approaches are to use a timer or to measure how much water has evaporated.

Both of these strategies are inefficient in terms of water usage. When set to automatic, evaporative coolers should dump water every six to twelve hours, although the minimum norm is once every 24 hours. The water is discarded every 72 hours to prevent microbiological spread.

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