Dehumidifier FAQs

General Info

What kind of maintenance is required for my dehumidifier?

It is recommended to clean the filter every two weeks. You can wash it with water, but it is important to allow the filter to dry before replacing it in the unit. You can also use a vacuum to clean the filter. When you are finished with the dehumidifier for the season, be sure to empty any water that has been collected in the water bin. Disconnect the hose if you used one, and make sure you replace the drain cap and rubber stopper back into the drain outlet. Make sure you store the unit in a cool place away from sunlight. 

What kind of setup is required?

A portable dehumidifier is easy to set up and does not require any installation. Just remember to close all windows and doors in order for the unit to successfully work as required. It is important that the dehumidifier is in an enclosed area at all times during operation. 

What is a portable dehumidifier?

As the name suggests, a portable dehumidifier works to reduce and eliminate humidity from musty basements or from any part of your home with high humidity. The portable dehumidifier sits nicely on sturdy wheels and can be easily moved from room to room. It is designed to work in temperatures between 41°F (5°C) and 89°F (32°C). 

What does the Sleep Mode on my TP Series Honeywell Dehumidifier do?

The Sleep Mode on the TP Series Dehumidifiers dims the light on the control panel and mirage display for better comfort when needed. However, the light does not completely switch off in order to keep settings visible throughout operation. 

For Honeywell TP Series Dehumidifiers: Does the outlet on the continuous drain fit an ordinary garden hose?

The TP Series Dehumidifiers (TP30WKN/TP50WKN/TP70WKN/TP30AWKN/TP50AWKN/TP70AWKN) do come packaged with a drain tube for continuous drainage. You can attach a standard garden hose for continuous drainage, but because the continuous drainage feature relies on gravity to pull the water condensation through the hose, it cannot be too long or the water may collect inside the hose or return to the unit. This is standard for most gravity drain dehumidifiers. Therefore, if the hose is longer than about 1 meter, it must be positioned vertically downward below the height of the dehumidifier. You can also buy the Honeywell  TP70PWK with Built-in Drain Pump, which would allow for another 5 meters as the pump helps to push the water out. 

What is the difference between a compressor and desiccant dehumidifier?

A compressor dehumidifier works by using condensation to extract water from the atmosphere. The dehumidifier draws in warm, humid air, which then passes over a refrigerated coil. When warm air passes over the coil, moisture is removed from the air via condensation. 

A desiccant dehumidifier uses adsorption, a process in which liquid molecules adhere to a surface. Humid air is drawn into the dehumidifier and passed over a desiccant wheel containing silica gel, which adsorbs excess humidity. The dehumidifier then outputs dry, warm air. 

Why has the listed pint capacity of my dehumidifier changed?

You might have noticed two different listed pint capacities for your dehumidifier. This is because dehumidifiers are now tested under new conditions that result in a reduction of their capacity rating. Due to these new Department of Energy (DOE) testing methods, a dehumidifier’s 2019 DOE capacity rating will be lower than its 2012 DOE capacity rating. However, no changes have been made to the units themselves, only to the method of testing. Actual dehumidifier performance has not changed. 

What is humidity?

Humidity is the measurement of water vapor in the air. Relative humidity is measured as a percentage. Generally, 30-50% is the ideal humidity level for most homes. You can use a humidity monitor, or hygrometer, to check the humidity levels around you. 


There is an Error Code on the display of my TP Series Honeywell Dehumidifier. What do I do?

See below troubleshooting instructions for the error codes. If problems persist, please contact Customer Support at

My TP70PWKN Dehumidifier with Drain Pump is showing an E5 Error Code. What does this mean? What should I do?

An E5 Error Code suggests that there is an issue with the pump function. Check out these steps to troubleshoot before contacting the Customer Support Center: 

  1. Check that the Direct Drain Cap is removed and that the Auto Drain Pump Cap and Auto Drain Pump Tube are installed properly. If the drain plug is installed, there is nowhere for water to drain out, and the E5 Error Code will display. 
  2. Check that you are using the original Honeywell Auto Drain Pump Tube and not an alternative. The Honeywell Auto Drain Pump Tube that comes with the product is engineered for the pump model to allow consistent water flow up to 5 meters. The diameter and length are determined scientifically. The error code may occur when water is not dispensing properly. 
  3. Check that the Auto Drain Pump Cap is securely on the Direct Drain outlet. 
  4. Make sure the Auto Drain Tube is not blocked or bent. 
  5. Make sure the filter screen on the pump is not obstructed or clogged with dirt. 
  6. Ensure the Auto Drain Pump Cap has a washer at its center. 
My dehumidifier continues to run even after the desired humidity level has been reached. Why won’t it turn off?

There is a 5% threshold when the desired humidity setting has been reached. The compressor will shut off once the relative humidity is 5% lower than your desired setting. The fan will continue to run for up to 6 minutes to cool the motor and will then shut off. Operation restores once the relative humidity is 5% higher than your desired setting. 

The built-in pump on my TP70PWKN Dehumidifier does not automatically restart after a power failure.

The TP70PWKN Honeywell Dehumidifier with Built-in Drain Pump will not automatically restart after a power outage to prevent leakage in case the drain tube was disconnected during power failure. The Auto Drain Pump Mode button must be manually reactivated in the event of a power outage. 

How To's

How do I empty the water tank?

When the water tank reaches capacity, the unit will shut off until it is emptied. There is also the option to attach a garden hose to redirect drainage and allow the dehumidifier to run without interruption. If you choose to attach a hose, you will need to ensure that the hose is free of kinks and that it drains into a reliable receptable, like a sink. 

How do I contact Customer Support?

Please contact us if you have any inquiries or experience difficulties with your product. 

How do I set up my dehumidifier for continuous drainage?

To set up your dehumidifier for continuous water drainage, locate the drain outlet at the back of the unit. Next, unscrew and remove the drain cap. Then, screw the continuous water drain tube onto the direct drain outlet. 

Once you have attached the drain hose to your dehumidifier, position the other end of the tube over a sink or drain, making sure the tube is secure. The tube should be directed downward as gravity is required to pull the water through the tube into the drain. Ensure the tube is not bent or kinked as this could stop the flow of water. 

How do I set up my dehumidifier for continuous drainage if it has an automatic drain pump?

Dehumidifiers with automatic drain pumps allow you to remove condensation both vertically and horizontally up to 16 feet. Attach the drain pump tube to the direct drain outlet located on the back of the unit. Once the water in the water tank reaches a certain level, the water will automatically be pumped out of the tank to drain.