How to Install Condensate Pump for Dehumidifier

In the previous article, we have walked you through the step-by-step guide on draining a dehumidifier into a sump pump by using automatic gravity draining. It was so easy to do, however, the most popular and hassle-free method to automatically drain your dehumidifier is by using a condensate pump.

Many portable dehumidifiers available on the market come with built-in pumps, but some don't. It's best to invest in a dehumidifier with pump, however, if you already own a dehumidifier that does not include a built-in pump, then you may need an external condensate pump.

Here we will guide you to install a condensate pump for your dehumidifier to ensure the continuous operation of it.

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What Power Condensate Pump Do I Need for Dehumidifier?

The power condensate pump you need for your dehumidifier depends on the size of your unit.

For example, if you have a 120-pint dehumidifier, it will require a different power pump than if you have a 20-pint model. The manufacturer should be able to tell you what specific pump is best for your machine.

How Does an External Pump Work?

An external condensate pump is a device that can be used to drain water from your dehumidifier.  It's pretty simple to use, but there are some things you should know before you get started.

Here are the steps for using an external condensate pump: 

  • Attach a hose to the back of your dehumidifier.
  • Direct the end of the hose into the external pump.
  • The other end will come with another hose - attach it and direct it to wherever you want water pumped (sink or bucket).

Make sure that once set up, water is making its way out of where you've directed it.

How to Hook Up External Condensate Pump for Dehumidifier

Instructions for setting up condensate pumps may differ from model to model and brand to brand. This is why you should read the setup instructions to determine if the manufacturer offers specific instructions.

If there's no instruction from the manufacturer, you can follow our guide to get started. Installing a condensate pump for your dehumidifier is an easy process that can be done in three simple steps.


Step 1 - Connect the first hose

Attach the hose to the back of the dehumidifier's drain port and place one end into the hole located near the top of the pump. The other end should fit perfectly to ensure that water doesn’t have any trouble entering the pump.


Step 2 - Connect the second hose

Attach another hose from your pump to where you want to drain water, preferably near an air conditioner with tubing coming out of it. Cut a section off this tubing and attach a T-fitting so water coming from both sources can all go in one place.


Step 3 - You're all set!

Turn on both devices and test out your new condensate pump. If needed, pour some water into the tube in order to make sure that everything is operating properly.

Final Words

Figuring out how to install a condensate pump for your dehumidifier is a process that isn't too complicated. The most important thing you should know before getting started with this project is what power type of pump will work best for the size of dehumidifier you have.

Once you have that information, installation goes much smoother!

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My name is Justin Williams. I am the founder and blogger at (read more about us). I was an allergy sufferer and that is also the reason why I began my trek to finding the best dehumidifier for my own personal health issues. All of the dehumidifier top picks on the site were put through their paces by Lance Perez - our dehumidifier researcher. He put each one through a series of tests to see how well they performed. Then, our editorial team compiled the insights into articles and published them.

2 thoughts on “How to Install Condensate Pump for Dehumidifier”

  1. But what if the condensate pump fails? The dehumidifier won’t care and will keep running, causing the condensate pump reservoir to overflow. You will end up with water on the floor. The more time that goes by before you notice, the more water there will be.

    • Thank you for bringing up this important point. If the condensate pump fails, it can indeed cause the reservoir to overflow and result in water on the floor. This is why it’s important to regularly check the condensate pump and make sure it’s functioning properly.


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