How To Drain A Dehumidifier To The Outside

Here we discuss How to Drain A Dehumidifier to the Outside. Dehumidifier is an important electronic appliance that has become quite popular in every household. Most dehumidifiers have a hose hook-up option that allows you to attach a standard garden hose to the unit and drain the collected water outside.

A dehumidifier removes extra moisture from the environment, provides fresh air, and collects the moisture in its reservoir, which has to be emptied frequently. Most dehumidifiers have a hose hook-up option that allows you to attach a standard garden hose to the unit and drain the collected water outside.

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 to 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 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 the drainage point.

marine dehumidifier with drain hose
Marine Dehumidifier With Drain Hose

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.

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.

Draining a dehumidifier
Draining a dehumidifier

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 to 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.

how to drain dehumidifier in basement without drain?

If your dehumidifier doesn’t have a built-in pump, you can still drain it without having to constantly empty the water bucket. All you need is a standard garden hose.

First, locate the drainage port on your dehumidifier. This is usually located on the back or bottom of the unit. If you can’t find it, consult your owner’s manual.

Next, attach one end of the garden hose to the drainage port. Then, run the other end of the hose to a nearby floor drain or sink. Make sure that the hose is placed in such a way that gravity can do its job and effectively drain the water from your dehumidifier.

drain dehumidifier out window:

You can easily drain a dehumidifier out the window as long as the unit has a Drain Hose Connection. Most dehumidifiers come with this built-in feature, and it’s typically located on the back of the appliance.

To begin, simply attach one end of the garden hose to the connection and then run the other end out the window. Once everything is in place, turn on the dehumidifier and let it do its job. You may need to empty the bucket a few times during operation, but otherwise, there’s not much else to it!

dehumidifier external drain:

A dehumidifier external drain is a way to connect your dehumidifier to a drainage system so that the water it collects can be drained away easily. This is often useful if you have a basement or other area that is prone to dampness and you want to make sure that the air in that space stays dry.

There are a few different ways to set up an external drain for a dehumidifier, so be sure to consult your particular model’s instruction manual before proceeding. Once you have everything set up, though, an external drain will make it easy to keep your home or office free of excess moisture.

how to run dehumidifier hose outside?

You can run the dehumidifier hose outside by checking the weather conditions in your area and following these steps:

  1. Make sure it is not too cold outside for the dehumidifier to function properly. The dehumidifier’s manual should list a minimum temperature at which it will still work.
  2. Place the dehumidifier in an area where it can draw in fresh air from outdoors.
  3. If there is a window nearby, open it to allow for airflow into the room from outside.
  4. Run the hose from the dehumidifier to outside, making sure to keep it away from windows and doorways so that cooled or heated air does not enter the home.

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),

5. Is drain dehumidifier through wall good practice?


This depends on a number of factors, such as the climate and type of insulation in your home. In some cases, it can be effective, while in other cases it may not make much of a difference.

The most important factor to consider is the size of your home. A small dehumidifier won’t be able to make much of a difference in a large home, and vice versa. If you’re unsure whether or not using a drain dehumidifier is right for you, consult with an HVAC technician to get their professional opinion.
how to drain a dehumidifier to the outside
Image via Google image search (labeled for reuse)


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.

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