How to clean the water tank of a house dehumidifier?
Jul 22, 2025
Hey there! As a supplier of dehumidifiers for houses, I know how important it is to keep your dehumidifier in top - notch condition. One crucial part of maintaining your house dehumidifier is cleaning its water tank regularly. A dirty water tank can not only affect the performance of your dehumidifier but also lead to the growth of mold and bacteria, which can be harmful to your health. So, let's dive into how to clean the water tank of a house dehumidifier.
Why Cleaning the Water Tank is a Big Deal
First off, why should you bother cleaning the water tank? Well, when your dehumidifier works, it pulls moisture out of the air and collects it in the water tank. Over time, this water can become a breeding ground for all sorts of yucky stuff like mold, mildew, and bacteria. If you don't clean the tank, these contaminants can be released back into the air when the dehumidifier is running, making your indoor air quality worse. Also, a dirty tank can cause the dehumidifier to work less efficiently, using more energy and costing you more money in the long run.
Getting Ready to Clean
Before you start cleaning, you'll need to gather a few things. You'll need some mild dish soap, a soft sponge or cloth, a small brush (like an old toothbrush), and some clean water. It's also a good idea to have some gloves on hand to protect your hands from any potential germs in the dirty water.
First, make sure your dehumidifier is turned off and unplugged. You don't want to risk getting an electric shock while you're cleaning. Then, locate the water tank. In most house dehumidifiers, the tank is at the bottom or on the side of the unit. Carefully remove the tank from the dehumidifier. Be careful not to spill any of the water on the floor or the dehumidifier itself.
Emptying the Water Tank
Once you've removed the tank, it's time to empty it. Find a sink or a drain where you can pour out the water. Make sure to pour all the water out completely. You might notice that the water has a strange smell or looks a bit murky. That's a sign that it's time to clean the tank!
Cleaning the Inside of the Tank
Now comes the fun part - cleaning the inside of the tank. Fill the tank about halfway with warm water and add a few drops of mild dish soap. Use your soft sponge or cloth to gently scrub the inside of the tank. Pay special attention to the corners and edges, as these are the places where dirt and grime tend to build up.
If there are any stubborn stains or deposits, you can use a small brush, like an old toothbrush, to scrub them away. Just be careful not to scratch the tank. Scratches can make it easier for dirt and bacteria to stick to the tank in the future.
After you've scrubbed the inside of the tank, rinse it thoroughly with clean water. Make sure to get rid of all the soap residue. You can do this by filling the tank with clean water and then pouring it out several times.
Cleaning the Outside of the Tank
Don't forget about the outside of the tank! Use your sponge or cloth to wipe down the outside of the tank. This will remove any dust or dirt that has accumulated on the surface. You can also use a little bit of the soapy water to clean the outside, but make sure to rinse it off well with clean water.
Drying the Tank
Once you've finished cleaning and rinsing the tank, it's important to dry it completely before putting it back in the dehumidifier. You can let it air - dry by placing it upside down on a clean towel. Make sure there is no water left inside the tank, as any remaining moisture can lead to mold growth.
Putting the Tank Back in the Dehumidifier
After the tank is dry, carefully place it back in the dehumidifier. Make sure it is properly seated and that there are no leaks. Then, plug in the dehumidifier and turn it on. Your dehumidifier should now be working more efficiently, and the air in your home should be cleaner.
How Often Should You Clean the Water Tank?
The frequency of cleaning your water tank depends on how often you use your dehumidifier and the humidity level in your home. As a general rule, you should clean the tank at least once a week if you use the dehumidifier regularly. If you live in a very humid area or use the dehumidifier constantly, you might need to clean the tank more often, maybe even every few days.
Our Range of Dehumidifiers
As a supplier of house dehumidifiers, we offer a wide range of products to meet your needs. If you're looking for a dehumidifier for a marine environment, check out our Marine Dehumidifier. It's designed to work in tough, humid conditions on boats and other marine vessels.
For those who need a dehumidifier that can work in low - temperature environments, our Low Temperature Rotary Wheel Air Dehumidifier is a great choice. It can effectively remove moisture from the air even when the temperature is low.
And if you're looking for a dehumidifier for air - drying applications, our Air Drying Use Duct Dehumidifier is the one for you. It can be easily installed in ducts to dry the air in large spaces.


Contact Us for Purchasing
If you're interested in any of our dehumidifiers or have any questions about cleaning or maintaining them, don't hesitate to contact us. We're here to help you keep your indoor air quality at its best. Whether you're a homeowner looking for a reliable dehumidifier or a business in need of a commercial - grade unit, we've got you covered.
References
- "Home Dehumidifier Maintenance Guide", Home Appliance Magazine, 2023
- "The Importance of Clean Water Tanks in Dehumidifiers", Indoor Air Quality Journal, 2022
