Cold water is more efficient in air coolers. This is because cold water evaporates more easily than hot water. When water evaporates, it absorbs heat from the surrounding air. This cooling effect is called evaporative cooling.

Evaporative cooling is the primary way that air coolers work. The air cooler blows air through a wet pad, which causes the water to evaporate. The evaporation of the water absorbs heat from the air, which cools the air down.

If you use hot water in your air cooler, it will not evaporate as easily. This means that the air cooler will not be as effective at cooling the air.

In addition, hot water can actually make the air cooler less efficient. This is because hot water can cause the air cooler to become clogged with dust and debris. This can reduce the airflow through the air cooler, which can make it less effective at cooling the air.

For these reasons, it is best to use cold water in your air cooler. This will help to ensure that your air cooler is as efficient as possible.

Here are some additional tips for using an air cooler:

• Clean the air cooler regularly. This will help to remove any dust or debris that may be clogging the air cooler.

• Place the air cooler in a well-ventilated area. This will help to ensure that the air cooler can circulate air freely.

• Adjust the settings on the air cooler to your liking. You can adjust the fan speed and the water level to find the settings that work best for you.

By following these tips, you can help to ensure that your air cooler is as effective as possible.