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Humidifier FAQs



HOW DO I CLEAN MY HUMIDIFIER?

In order to keep it working properly, we recommend you rinse your humidifier daily and clean it weekly.

Please refer to your owner's manual, the following directions and view the link below for videos on how to clean your specific humidifier.



How to Clean Warm Mist Humidifiers:

For routine cleaning and maintenance, select the appropriate cleaning video specific to your humidifier and refer to the directions below.

videos

For warm mist humidifiers, it is important to keep the heating element clean. When minerals build up on the heating element it may cause it to overheat and shut off.

Turn off and unplug the humidifier.

Remove the water tank, the cooling chamber, and the removable tray.

Fill the base with undiluted white vinegar so the heating element is submerged. Do not submerge the motor in any liquid.

Let the heating element soak in the vinegar for at least 20 minutes. Never turn the unit on while you are cleaning. If there is excess mineral buildup on the heating element you can soak for several hours or overnight. 

While still soaking in the vinegar, take a soft bristled brush and scrub off any minerals on the heating element.

Empty and rinse thoroughly with water until the smell of vinegar is gone.



How to Clean Ultrasonic Cool Moisture Humidifiers:

For routine cleaning and maintenance, select the appropriate cleaning video specific to your humidifier and refer to the directions below.

videos

For ultrasonic humidifiers, periodic cleaning of the nebulizer will help it perform at its best. The nebulizer, which is a round disc found in the base of the unit, vibrates at ultrasonic speed to create mist. Over time, minerals from your water may collect on the nebulizer causing it to slow to a pace that is not enough to create mist.

Turn off and unplug the humidifier.

Empty water from the tank and base of the unit.

Fill the base with undiluted white vinegar (just enough to cover the nebulizer) and let it soak for at least 20 minutes.  If you see a strong mineral build up, you may want to let it soak longer. Do not run the humidifier with vinegar in it.

Gently wipe nebulizer and reservoir area with a soft cloth to remove the mineral deposits.

Empty the vinegar and rinse the base with water until the smell of vinegar is gone.



How to Clean Evaporative Cool Moisture Humidifiers:

For routine cleaning and maintenance, select the appropriate cleaning video specific to your humidifier and refer to the directions below.

videos

For evaporative humidifiers, it is important to replace the wicking filter every 30-60 days, depending on water quality and usage. To clean the humidifier:

Turn off and unplug humidifier.

Empty water from the tank and base of the unit.

Remove wicking filter.

Add vinegar to water tank, replace tank cap and place on base so vinegar drains into the reservoir.

Soak for 20 minutes. Use vinegar to wipe all interior surfaces and inside of tank with a soft cloth.

Empty vinegar and rinse until the smell of vinegar is gone.

Replace wicking filter with a new Genuine Honeywell Replacement Filter. [See below for correct filter]



HOW DO I SETUP MY HUMIDIFIER?

Please refer to the “How to Use” video specific to your model found here: videos and refer to the following directions:

Place humidifier on a water-resistant surface, a minimum of 12” from the wall.

Remove any tape holding components in place for shipping.

Fill with water, plug in and turn on (Note: Top Fill Cool Moisture Towers HEV615 & HEV620 and Top Fill Cool Mist Humidifier HUL570 require installation of float paddle before use.)

Please note the following:

• For evaporative cool moisture humidifiers, it is recommended to wet the wick before use for faster humidification

• For warm mist humidifiers, it will take a minute or more for the water to boil and the unit to produce steam

• For ultrasonic cool mist humidifiers, elevating the humidifier on a table or shelf will help keep the mist from settling on the floor



HOW DO I SETUP MY HUMIDIFIER?

Model

Name

Compatible Filter

HCM350

Germ Free Cool Moisture Humidifier

HAC504 Filter A

HEV615B

Cool Moisture Tower

HFT600 Filter T

HEV620

Cool Moisture Tower w/Digital Humidistat

HFT600 Filter T

HUL570B

Top Fill Cool Mist Humidifier

HDC500 Demineralization Cartridge (this is optional and only sold on Amazon)

HCM-6009

Cool Moisture Console

HC14 Filter E

HEV685 and HEV680

Top Fill Cool Moisture Console

HC14 Filter E

HWM845

Warm Mist

Does not require a filter

HUL430B

Designer Series Cool Mist

Does not require a filter



WHAT DO I DO IF THE POWER IS ON, BUT MY HUMIDIFIER ISN’T WORKING?

• If your Cool Mist Ultrasonic Humidifier in on and there is no mist, check to see if the tank is empty. If not, please reach out to us at [email protected] so we can further assist you.

• If your cool moisture evaporative humidifier has a humidistat and the fan is off, it could be that the set humidity level has been reached in the room. The humidifier will turn back on when the room humidity level drops below the set humidity level. You can also adjust the humidistat to a higher setting to keep the humidifier running longer.

• If your cool moisture evaporative humidifier does not have a humidistat and the fan is off, please reach out to us at [email protected] so we can further assist you.

• If your Cool Moisture evaporative humidifier is taking up less water:

• Filter is clogged with mineral deposits and should be replaced
OR

• Relative humidity level in room may be too high and air will not accept any more moisture; if running humidifier in closed room, open door to ventilate

• If your Warm Mist humidifier with a humidistat is on and there is no mist, adjust the humidistat to a higher level by turning the knob clockwise (to the right).

• If your Warm Mist humidifier, with or without a humidistat, is on, there is no mist, and the red reset light is illuminated:

• Check if the tank is empty. Turn unit off, fill with cool water, wait 10 minutes for heating element to cool, then turn back on.
OR

• The heating element needs to be cleaned. Please refer to the Warm Mist cleaning instructions above.

• If your Warm Mist humidifier does not have a humidistat, is on and there is no mist, please reach out to us at [email protected] so we can further assist you.



WHERE CAN I FIND REPLACEMENT PARTS FOR MY UNIT?

Please reach out to our Consumer Relations team at [email protected] for replacement part information.

WHAT IS THE WHITE DUST ON MY HUMIDIFIER?

(For models HUL570B, HUL535W, HUL430B)

High mineral content in your water, also known as hard water, may cause a white mineral residue to accumulate on surfaces in the room near the humidifier. The higher the mineral content (hardness) of your water, the greater the potential that an Ultrasonic humidifier may produce white dust. White dust is not a result of a defect or flaw in the humidifier. It is a result of the amount of mineral suspended in the water you are using.

To minimize the amount of white dust, use a mixture of distilled water with tap water in your tank.



WHERE CAN I FIND A NEW OWNER’S MANUAL FOR MY UNIT?

Please refer to your specific model’s detail page on videos. There you’ll be able to view and print your owner’s manual.



HOW DO I KNOW WHICH SIZE HUMIDIFIER WILL BEST FIT MY ROOM?

Choosing a humidifier which correctly fits your room is important. Too small a humidifier could under-humidify a room, while too large could over-humidify. Please refer to the room size chart below:

Room Size Chart

Room Size*

Approx. square footage

Small

Up to 250 ft2

Medium

~250-400 ft2

Large

~400-600 ft2

XL/Multi

~700-1200 ft2

*Room sizes are estimates based on measurement in accordance with ANSI standards for homes of average insulation.

Contact Honeywell

We are currently experiencing higher than normal call and email volumes and ask you to use our support page to find answers to common questions to more quickly serve your needs. We wish you and your family continued health and safety.

Personal Information

Product Information

  • Locate your product’s model number:Usually on the bottom of the machine or on the back of the motor, engraved into the plastic or on a sticker

    Locate your product’s date code: The date code is a 5 digit number stamped into one of the metal prongs on the plug of your unit.

Contact Us

Contact Us

We are currently working on upgrading our systems to better support your needs. Our regular support will resume Monday, August 31st at 9:00am EST. In the meantime, we invite you to visit our enhanced FAQ’s in an effort to better serve your needs.

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Looking forward to serving you,

Honeywell