How to Drain A Dehumidifier to the Outside (A Conclusive Guide)

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Hi, I’m Alex and I love to share my experience and suggestions to manage the humidity levels in any area, maybe it’s your home. I...Read more

Dehumidifier is an important electronic appliance that has become quite popular in every household. A dehumidifier removes extra moisture from the environment, provides fresh air, and collects the moisture in its reservoir, which has to be emptied frequently.

If you don’t know the proper steps of how to drain a dehumidifier to the outside, then you have come to the right place. I will discuss the methods of draining a  dehumidifier without a pump, and also the one that comes with a built-in pump.

Many people avoid using a dehumidifier because they need to empty the water reservoir regularly, which is quite a pain. So, purchasing a dehumidifier with a drain port makes it easy to drain the water.

There are many methods you can follow to drain the water of the dehumidifier. But it mainly depends on the type of dehumidifier you use.

Drainage with the Help of Gravity:

The dehumidifiers that don’t come with a built-in pump are drained with the help of gravity. You need to connect a drain hose with the drainage connection of the dehumidifier.

If a drainage hose is not included with your dehumidifier, then you can buy any standard hose that fits into the dehumidifier’s drain port. If you have a floor drain hole, then you can direct the other end of the hose to the hole for proper drainage.

The drainage point should be situated lower than the dehumidifier so that the water can flow downwards through the hose for a effective and proper drainage. If a floor drain hole is not available in your house, then you can drain the water outside the window or into a sink.

As the drainage depends on gravity, you just need to place the dehumidifier at least 6-inches above from the drainage point.

Steps for Draining:

  • 1. Install the dehumidifier on the wall or place it securely on a table.
  • 2. Make sure that the drainage location is situated lower than the dehumidifier.
  • 3. Connect the hose to the drain port and lead the other end of the hose to the desired drainage point.
  • 4. Turn on the dehumidifier for the next operation.

Drainage with An External Condensate Pump:

If you feel that the water is not draining properly with the gravity drainage method, then you can purchase a condensate pump that will help in pumping out the water into a septic, sink, or a drain hole.

Little Giant VCMA-20ULS 115 Volt, 80 GPH, 1/30 HP...

A pump can elevate the water level horizontally and vertically. The set-up of a condensate pump with the dehumidifier is quite simple too.

Steps for Draining:

1. Place the dehumidifier next to the condensate pump at a higher position.

2. Connect a hose into the top connection of the condensate pump and attach the other end of the hose into the drain port of the dehumidifier.

3. Next, fit another small hose on the other connection of the condensate pump and lead the end of the hose into a sink or any other place where you want the water to end up.

4. Turn on the dehumidifier and the external condensate pump.

The water from the dehumidifier will be collected in the pump for drainage. When the pump gets filled with the water, it starts draining it out through the hose into the sink or any other drainage point.

Drainage for A Built-in Pump Dehumidifier:

Drainage for a built-in pump dehumidifier is quite easy. All you need to do is connect the dehumidifier with a hose and let the built-in pump drain out the water through the hose, automatically, out of the window, into a drain hole, or sink.

The dehumidifier doesn’t need to be installed or placed at a higher position than the drainage hole. The included pump of the dehumidifier can help the water to reach up to 15-feet height, vertically or horizontally, for draining out the water.

Some of the dehumidifiers come with caster wheels, so after it finishes dehumidifying the room, you can move it from the room to the drainage location.

Steps for Draining:

1. Place the dehumidifier on the ground, or at a higher position.

2. Attach the hose into the drain port.

3. Place the other end of the hose to the desired drainage point.

4. Turn on the dehumidifier for a continuous operation.

If you need a dehumidifier for your basement, then built-in dehumidifiers will be a suitable one.

Faq’s about How to Drain A Dehumidifier to the Outside:

1. Will a dehumidifier get rid of standing water?

A dehumidifier will have no effect on standing water, but it can clear up the air of dampness that gives mold and bacteria a high-quality home to grow in. A safe, simple solution to eliminate most moisture problems is water evacuation. If your unit sits on a carpeted surface or next to something containing carpeting, have the excess carpeting removed so that it does not seal off any gaps or crevices where water can accumulate.

2. How to continuously drain a dehumidifier?

It’s possible to continuously drain a dehumidifier by installing the pump to the top of the device and running flexible tubing from the drain hose through or around any obstruction with a hose clamp or strap.

3. Where to drain a dehumidifier?

You should empty a dehumidifier or any other water-containing device into a bathtub, bathroom sink, tub, toilet, or basement floor drain.
It’s important to note that not all homeowners have outdoor drainage systems for their bathrooms and kitchens to connect to the city sewer system. In this case, you should consult your local government. In other cases where homeowners have an outdoor drainage system, they add a PVC pipe from the surface equipment (i.e., dehumidifier) into the house’s sump pump and back down into the septic drain field or municipal sewer system.

4. How to drain a dehumidifier automatically?

The two most popular ways to drain a dehumidifier are either through the control panel (a system may come with an overflow hose) or by ‘back siphoning’. you’ll first need to locate its pipe point – usually located near the top of the tank. Once found, caulk both ends shut and place a bucket underneath. You can use other vessels for water that would act better as absorption apparatus than just a regular bucket – like old plastic bottles covered in absorbent material (or filter paper),


Pulling out the reservoir, emptying it, then putting it back, doing this 3-4 times a day is not possible for many. The above-mentioned methods will drain the water out of a dehumidifier automatically without any hassle.

Make sure to follow the steps properly and fit the hose tightly to the drain port so that the water drains out effectively without any leakage.

I hope the above article has helped you in learning the correct way of draining the water.

fitness trainer

Hi, I’m Alex and I love to share my experience and suggestions to manage the humidity levels in any area, maybe it’s your home. I update the site regularly, so stay connected and I hope, you will get all the necessary information here to fix the humidity level in your preferred area and select the best humidifier and dehumidifier for various purposes. you may also find me on Twitter.happy blogging.

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