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Putting Ice In Evaporative Coolers: Does It Really Work?

Putting Ice In Evaporative Coolers: Does It Really Work?

You have a swamp cooler or evaporative cooler that isn’t performing as well as you’d want. Perhaps you have heard that filling the cooler with ice makes it work better. You need to find a solution because it’s hot outside and the swamp cooler is spewing warm or lukewarm air out of the register.

A cooler that uses evaporation may hold ice. The air that the fan is blowing into your house will cool as a result. Although it gives the air a quick boost of cooling, this could make the cooler less efficient over the day.

Ice in the reservoir will lengthen the time it takes for the evaporative cooler to function efficiently because water must be heated to evaporate.

You may be considering whether it is worthwhile to add ice to your swamp cooler now that you are aware that it is only a temporary fix. We’ll go over the things to think about before adding ice to your evaporative cooler. Other methods to cool the air or improve the swamp cooler’s effectiveness will also be covered in this essay. In the event that your swamp cooler is blowing warm or hot air, we will also diagnose any probable issues. Read on to discover more.

Is It Okay To Place Ice In Evaporative Coolers?

Putting Ice In Evaporative Coolers: Does It Really Work?

It might help you receive cooler air right now if you place ice in an evaporative cooler. Due to the frigid air that emerges soon after adding ice to the reservoir, many people swear by this technique. The fan will blast cool vapors out as the ice starts to melt. This may improve the fan’s cooling capabilities, but it will also reduce the evaporative cooler’s effectiveness.

Evaporation is the primary means of operation for an evaporative cooler. Heat causes water to evaporate. This approach only has a little impact. Through evaporation, a swamp cooler will take heat out of the atmosphere.

When you add ice, this doesn’t happen. The immediate impact of adding ice to your swamp cooler will depend on the ambient temperature and humidity. If you don’t continuously adding more ice, this strategy won’t keep the air chilly all day.

Ice in the reservoir prevents evaporation, so the cooling effect is created by blowing cool vapors from the melting ice.

To achieve the same result, simply direct a standard fan toward a bowl of ice. This is a better choice if a standard fan is available. Evaporation-based cooling would enable you to maintain your swamp cooler operating as intended.

You can get rapid respite from the heat without sacrificing the evaporative cooler’s all-day efficiency by using a fan and a bowl of ice.

How Can A Swamp Cooler Be Made Colder?

Putting Ice In Evaporative Coolers: Does It Really Work?

Make sure your swamp cooler is running well by following these procedures. The swamp cooler pad will stop blowing cold air if it dries out. It will bring warm air inside from the outside. If the pump is off in dry regions, the pad will quickly dry out.

You should leave the pump running so that the swamp cooler will function throughout the day without needing regular attention.

Check to see whether the pad is not torn or broken, as this could allow air to circulate around the pad. Check the pad for dirt or mold, which can potentially reduce the cooler’s efficiency.

For swamp coolers to function properly, a window must be open. For best results, open a window on the side of the room where the swamp cooler is located. As a result, a continuous flow will be created, allowing hot air to escape and cooler air to enter your living area. In order to prevent the cooler from blowing heated air, make sure the water pump is operating properly.

The Maximum A Swamp Cooler Can Cool

In locations with high humidity, a swamp cooler can reduce the temperature of a room by up to 10 degrees. In dry conditions, evaporative coolers work better and can cool an area by up to 30 degrees. Make sure your swamp cooler is the appropriate size for the area you’re aiming to chill. There will be a cubic feet per minute (CFM) meter on every swamp cooler. To calculate how much indoor space the cooler can successfully cool, multiply this CFM value by two.

To calculate the calculation, you still need to do some arithmetic if you are trying to cool a 200 square foot area.

Calculate the room’s height and multiply the result by the area of the room. 1,400 cubic feet is the size of a 200 square foot area at 7 feet in height. To chill this area, utilize a swamp cooler with 700 CFM or more airflow.

Can The Swamp Cooler Be Left On All Night?

Putting Ice In Evaporative Coolers: Does It Really Work?

You may leave a swamp cooler running all night. At night, the air outside cools, and your swamp cooler pulls this cool air inside your house through a water-soaked pad. If you don’t have the pump on all night, the pad can dry out. This is not a major issue because the cooler will continue to circulate colder air throughout the night in your home.

You should activate the pump as soon as you awaken in the morning. If not, you can leave the pump running all night long to keep the pad saturated.

My Swamp Cooler Blows Warm Air, Why?

Warm air will be blown out of your swamp cooler after the water-pad dries up. This may occur if the pump is not turned on after letting the fan run for several hours or longer. If, after turning on the pump, your issue persists, your cooling system needs more maintenance. The swamp cooler’s water pump might need to be replaced. A worn or frayed pad is the only other explanation that makes sense.


To increase the amount of chilly air in your home, you can add ice to an evaporative cooler. The evaporation process no longer generates cool air; instead, cool water vapors from the ice melting are being blown by the fan. To achieve a similar result, you could also direct a standard house fan at a bowl of ice. The efficiency of evaporative cooling will be decreased if you put ice in your swamp cooler. Ice lengthens the time it takes for the cooler to effectively cool the area because water must be heated in order to evaporate.

Putting Ice In Evaporative Coolers: Does It Really Work?

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Written by HVAC Contributor

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