Honeywell HUL585 Series

Questions and Answers

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Felicia BriggsJul 29, 2025
What to do if my Honeywell HUL585 power light is on but there is no mist?
- B
  billyromeroJul 29, 2025
  If the Honeywell Humidifier power light is on, but little to no mist is being released, first ensure the water tank is filled. Then, increase the power output using the power knob or touchpad. Check that the adapter is fully plugged into the port on the back of the humidifier. Clean the nebulizer, following the cleaning instructions. Also, verify that all components are installed properly. This issue can also occur if the reservoir has been overfilled; remove the tank, pour the water out of the reservoir, and replace the tank.
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farmertinaAug 5, 2025
Why is my Honeywell HUL585 Humidifier leaking from the base?
- L
  Leslie McdonaldAug 5, 2025
  If water is leaking from the base, reservoir, or tank sides of your Honeywell Humidifier, ensure the float rod is properly placed on the brackets. Check the plunger for damage, and if damaged, contact Consumer Relations. Make sure the plunger is moving freely. Inspect the tank for cracks; if cracked, contact Consumer Relations. Also, check for any foreign material stuck under the tank gasket by pushing and releasing the plunger system at the sink to allow water to flow. If the tank has been filled past the MAX fill level, remove some water and realign the float paddle by placing the float rod over both brackets.
T
tmccormickAug 13, 2025
Why is water not draining into the reservoir of my Honeywell HUL585?
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  Mark GomezAug 14, 2025
  If the water is not draining into the reservoir of your Honeywell Humidifier, the plunger may be clogged. Rinse it by spraying water towards the plunger, then swish water in the tank and dump it out. The plunger might also be stuck; add a small amount of water and push and release the plunger to ensure water can flow freely. Check if the float paddle is installed correctly by placing the float rod over both brackets. If you are using a demineralization cartridge, uninstall it, shake it a few times, and reinstall it.
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Mrs. Tamara BondAug 20, 2025
Why does my Honeywell HUL585 make dripping sounds?
- M
  matthew12Aug 20, 2025
  The Honeywell Humidifier may make noticeable dripping sounds because the machine is stabilizing. No action is required, as the noise level will decrease on its own.

Summary

Important Safety Instructions

General Safety Precautions

Essential safety guidelines for operating the humidifier, including placement, usage, and maintenance.

Choking Hazard Warning

Small parts warning for children under 3 years old.

Understanding Your Humidifier

How the Humidifier Works

Explanation of how the humidifier generates and distributes mist using ultrasonic technology.

Humidifier Components

Identification and list of the humidifier's individual parts and accessories.

Humidifier Setup and Preparation

Unpacking the Humidifier

Instructions for unpacking the humidifier and preparing it for setup.

Float Paddle Installation Guide

Step-by-step guide for correctly installing the float paddle for proper operation.

Managing Hard Water and White Dust

Information on hard water effects and how to reduce white dust.

Filling and Operation Guide

Humidifier Filling and Refilling

Instructions for filling the humidifier's water tank using different methods.

Operating the HUL585 Model

Operating instructions specific to the Honeywell HUL585 model.

Operating the HUL588 Model

Powering the Humidifier On;Off

Instructions on turning the humidifier on and off, and default settings.

Adjusting Mist Output Levels

How to adjust mist output levels (low, medium, high) for desired humidity.

Using the Humidistat for Humidity Control

Using the humidistat to set and maintain desired humidity levels (30-70% RH).

Humidity Reached Indicator

Indicator for when the set humidity level is achieved and mist stops.

Understanding the 2-Way Mist Outlet

Description of the 2-way mist outlet for directional mist control.

Additional Features and Maintenance

Using the Essential Oil Tray

Instructions for using the essential oil tray for added ambiance.

Using the Demineralization Cartridge

Information on using the demineralization cartridge to reduce white dust.

Daily Maintenance Recommendations

Recommendations for daily cleaning and maintaining the humidifier.

Humidifier Cleaning Procedures

Before Cleaning Steps

Initial steps before performing scale removal or disinfecting the humidifier.

Scale Removal (Mineral Buildup)

Detailed steps for removing mineral buildup using vinegar.

Humidifier Disinfecting Process

Disinfecting with Bleach Solution

Step-by-step instructions for disinfecting the humidifier using a bleach solution.

End of Season Care and Storage

Instructions for proper cleaning, drying, and storage of the humidifier.

Troubleshooting Humidifier Issues

Water Not Draining into Reservoir

Solutions for problems with water not flowing into the reservoir.

No Mist or Low Mist Output

Causes and solutions for lack of mist or reduced mist output.

Water Leaking from Unit

Troubleshooting steps for leaks from the base, reservoir, or tank.

Product Information and Warranty

Consumer Relations Contact

Contact information for customer support and product inquiries.

Technical Specifications

Details on the humidifier's electrical rating, capacity, and adapter usage.

FCC Compliance Statement

Information regarding compliance with FCC rules for radio frequency energy.

2 Year Limited Warranty

Overview of the limited warranty terms, coverage, and exclusions.