Honeywell Humidifier HE120B Manual

The Honeywell Humidifier HE120B is a high-capacity evaporative humidifier designed for large rooms up to 1200 sq. ft. It features a 2.5-gallon tank, three fan speeds, an adjustable humidistat, a refill indicator light, a wicking filter system, and a quiet operation mode. Below are key sections for safety, features, installation, setup, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: 2.5-Gallon Water Tank, Wicking Filter, Control Panel with Digital Display, Humidistat, Three-Speed Fan, Refill Indicator, Carrying Handle.

Installation & Setup

Unpack and inspect all contents. Place on a flat, stable surface away from walls and electronics.

1. Remove the water tank: Lift the tank from the base unit.
2. Install the wicking filter: Remove filter from packaging and insert into the filter frame in the base.
3. Fill the tank: Turn tank upside down, remove cap, fill with cool tap water, replace cap securely.
4. Place tank on base: Align tank with base and set down gently until it clicks into place.
5. Plug into AC power: Use the provided power cord and connect to a standard 120V outlet.

WARNING! Place humidifier on a water-resistant surface. Do not place on carpets or uneven surfaces. Ensure unit is upright before filling.

First-Time Use

Power on the humidifier; follow initial setup steps.

1. Power On: Press the POWER button on the control panel.
2. Set Desired Humidity: Use the UP/DOWN buttons to set your target humidity level (recommended 40-60%).
3. Select Fan Speed: Press the FAN button to cycle through Low, Medium, and High settings.
4. Enable Quiet Mode: Press the QUIET button for nighttime operation (fan runs at lowest speed).
5. Monitor Display: The digital display shows current room humidity and your set target.

CAUTION! Use only cool tap water. Do not use hot water, distilled water, or additives unless specified. Allow the filter to soak for 15-20 minutes before first use for optimal performance.

Specifications

• Model: HE120B
• Tank Capacity: 2.5 gallons (9.5 liters)
• Coverage Area: Up to 1200 sq. ft.
• Output: Up to 2.5 gallons per day (maximum setting)
• Humidistat Range: 35% RH to 65% RH (adjustable)
• Fan Speeds: 3 (Low, Medium, High)
• Noise Level: ≤ 35 dB on Quiet Mode
• Power Source: 120V AC, 60Hz
• Power Consumption: 40W (max)
• Dimensions (HxWxD): 18.5" x 13.2" x 10.8"
• Weight (Empty): 8.8 lbs
• Filter Type: Evaporative Wicking Filter (Replace every 1-3 months)

Controls and Settings

Access all functions via the front Control Panel or Remote Control (if included).

Control Panel Buttons: POWER, HUMIDITY (UP/DOWN), FAN SPEED, QUIET MODE, DISPLAY (toggles info), FILTER RESET.

Digital Display Icons: Current Humidity %, Target Humidity %, Fan Speed Indicator, Quiet Mode Icon, Refill Alert, Filter Replacement Alert.

Settings Overview: Humidity Control (set target 35%-65%), Fan Speed (adjusts moisture output and sound level), Quiet Mode (reduces fan noise), Display (can be dimmed for night).

Operation Modes

Three main modes for different needs.

1. Continuous Mode: Fan runs continuously at selected speed until tank is empty or unit is turned off.
2. Auto Mode (with Humidistat): Unit automatically turns fan on/off to maintain your set humidity level. Most energy-efficient.
3. Quiet/Sleep Mode: Fan runs at lowest possible speed. Ideal for bedrooms or offices.

Tip: Use Auto Mode for consistent comfort and to prevent over-humidification. The refill indicator light will illuminate when the tank is empty.

Maintenance & Cleaning

Regular cleaning prevents mold and mineral buildup. Unplug unit before any maintenance.

1. Daily: Check water level and refill as needed.
2. Weekly Cleaning: Empty any remaining water. Clean tank and base with a soft cloth and a mixture of mild dish soap and warm water. Rinse thoroughly.
3. Descaling (Monthly or as needed): For hard water areas, use a descaling solution (1 part white vinegar to 3 parts water). Pour into base, let sit for 15-20 minutes, then scrub gently and rinse.
4. Drying: Allow all parts to air dry completely before reassembling or storing.

WARNING! Never use abrasive cleaners, bleach, or harsh chemicals. Do not submerge the motor or control panel in water.

Filter Replacement

The wicking filter is essential for operation and air quality. Replace every 1-3 months depending on usage and water hardness.

1. Unplug the humidifier and remove the water tank.
2. Lift out the old filter from the base frame.
3. Insert the new filter, ensuring it sits flat and fully within the frame.
4. Press the FILTER RESET button on the control panel to reset the filter timer indicator.
5. Reinstall the water tank and plug the unit back in.

CAUTION! Use only genuine Honeywell HE120B replacement filters. A clogged or old filter reduces efficiency and can promote microbial growth.

Safety Information

Important safety precautions to prevent injury or damage.

• Always unplug the unit before cleaning, refilling, or servicing.
• Use only cool tap water. Do not use hot water.
• Place on a flat, level, water-resistant surface.
• Keep out of reach of children and pets.
• Do not operate if cord or plug is damaged, or if unit has been dropped.
• Do not block air inlet (bottom) or outlet (top grille).
• Do not move the unit while it is operating or full of water.
• Empty and dry the unit completely if it will not be used for several days.

Regulatory Information

This device complies with Part 15 of the FCC Rules. Operation is subject to the condition that this device does not cause harmful interference. Copyright © Honeywell International Inc. Honeywell and the Honeywell logo are registered trademarks of Honeywell International Inc. For support, replacement parts, or to locate a service center, visit www.honeywellhumidifiers.com or contact 1-800-332-1110.

Troubleshooting

Reset: Unplug unit for 5 minutes to perform a full system reset.

Service: For issues not resolved above, contact Honeywell Customer Service at 1-800-332-1110 or visit www.honeywellhumidifiers.com.