Grafik: Wasser im Luftkühler richtig nachfüllen in vier Schritten: ausschalten, sauberes Wasser, nicht überfüllen, regelmäßig wechseln
Posted by GoodCooling Team

Water in an Evaporative Air Cooler: Tank Size, Consumption and Correct Refilling

An evaporative air cooler cools through evaporating water. Without water there is no cooling effect left, and the unit simply acts like a fan. That is why the water supply is one of the most important everyday questions.

Tank sizes of the GoodCooling models

  • Y5: 45-litre tank
  • Y30: 130-litre tank
  • Y20: 300-litre tank

How long does one filling last?

For the Y5, the data sheet states about 5.5 hours of operation on one tank filling. That works out at roughly 8 litres per hour. Actual consumption depends on temperature, humidity and operating level. The drier and hotter the air, the more water evaporates. For the larger models, please check the running times in the respective data sheet.

Refilling water: how to do it correctly

  1. Switch the unit off and disconnect it from the power supply before refilling water.
  2. Use clean water, ideally tap water of drinking-water quality.
  3. Do not overfill and keep an eye on the fill level.
  4. Change it regularly: standing water should not stay in the tank for long periods.

Hygiene and care

Water that stands in the tank for a long time can encourage germs and deposits. Empty the tank after use or during longer breaks, and clean the tank and cooling pad at regular intervals. You will find detailed instructions in the article Maintenance and care.

Frequently asked questions

Can I add ice cubes to the water?

This is common with many units, but please check the notes for your model in the manual. The main cooling effect comes from evaporation.

Does an evaporative air cooler need a water connection?

That depends on the model. Please check the details on the respective product page.

Does the water make the air more humid?

Yes, humidity rises somewhat. That is why ventilating indoor spaces is important, see Evaporative air coolers and humidity.

Conclusion

With clean water, regular changes and a little care, an evaporative air cooler runs reliably. If you have questions about your model, we are happy to help.