Honeywell Humidifier HWM845W Manual

The Honeywell HWM845W is a warm mist humidifier designed to add moisture to dry indoor air, providing relief from dry air discomfort. It features adjustable humidity control, a medicine cup for inhalants, an easy-to-fill water tank, automatic shut-off, a night light, and a filter-free design. Ideal for medium-sized rooms. Below are key sections for safety, features, setup, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Water Tank, Base Unit with Heating Element, Control Panel, Medicine Cup, Mist Outlet, Night Light, Power Cord.

Installation & Setup

Unpack and inspect all parts. Place on a flat, stable, waterproof surface.

1. Remove all packaging materials from inside and outside the unit.
2. Place the humidifier on a level surface at least 12 inches from walls and furniture.
3. Fill the water tank with clean, cool tap water. Do not use hot water.
4. Align the tank with the base and press down firmly until it seats properly.
5. Plug the power cord into a standard 120V AC outlet.

WARNING! Use only on a stable, waterproof surface away from children and pets. Do not place on carpets or near heat sources.

First-Time Use

Power on the humidifier; adjust settings as needed.

1. Ensure the water tank is filled and properly seated on the base.
2. Plug in the unit. The power indicator light will illuminate.
3. Turn the humidity control dial to the desired mist output level (Low to High).
4. Adjust the mist outlet direction as needed.
5. To use the night light, press the night light button (if equipped).

CAUTION! Always use clean, cool water. Never add medication directly to the water tank—use the medicine cup only.

Specifications

• Model: HWM845W
• Type: Warm Mist Humidifier
• Coverage Area: Up to 400 sq. ft. (medium room)
• Tank Capacity: 1.5 gallons
• Run Time: Up to 24 hours on low setting
• Output: Adjustable warm mist
• Power: 120V AC, 60Hz
• Power Consumption: 200W (max)
• Dimensions (approx.): 12.5" H x 10.5" W x 9" D
• Weight (empty): 5.5 lbs
• Special Features: Medicine cup, night light, automatic shut-off, filter-free

Controls and Operation

Control Panel: Power Indicator, Humidity Control Dial, Night Light Button (if equipped).

Operation: Turn the dial clockwise to increase mist output (Low → Med → High). Turn counterclockwise to decrease or turn off. The night light provides soft illumination; press button to turn on/off independently of mist function.

Automatic Shut-Off: Activates when the water tank is empty or improperly seated. The unit will stop producing mist and the power light may turn off or flash.

Refilling: Unplug the unit. Lift the tank off the base, carry to sink, remove cap, fill with cool water, replace cap, and reseat on base.

Maintenance & Cleaning

Regular cleaning prevents mineral buildup and ensures efficient operation.

1. Daily: Empty and rinse the water tank if not in continuous use.
2. Weekly: Clean the tank and base with a mixture of white vinegar and water (1:1 ratio) to descale. Rinse thoroughly.
3. Monthly: Deep clean all parts. Use a soft brush to clean the heating element and mist outlet.
4. Always unplug the unit before cleaning. Never immerse the base in water.
5. Dry all parts completely before reassembly and use.

Tip: Using distilled water can reduce mineral deposits and cleaning frequency.

Medicine Cup Usage

The medicine cup is for use with approved inhalants (e.g., Vicks VapoSteam).

1. Ensure the humidifier is off and unplugged.
2. Pull out the medicine cup from its compartment.
3. Add the recommended amount of inhalant to the cup. Do not exceed the fill line.
4. Slide the cup back into its slot until it clicks into place.
5. Plug in and operate the humidifier as normal. The warm mist will carry the medicated vapor.
6. Clean the cup after each use with warm, soapy water.

WARNING! Use only inhalants designed for warm mist humidifiers. Never add medication, oils, or chemicals directly to the water tank.

Safety Features

Automatic Shut-Off: Prevents overheating when water is low. Cool-Touch Exterior: Stays cool to the touch during operation. Tip-Over Protection: Internal switch cuts power if unit is knocked over.

Care & Storage

When not in use for extended periods:

1. Unplug the unit.
2. Empty and thoroughly clean all parts as described.
3. Allow all components to air dry completely.
4. Reassemble and store in original box or a dry, cool place.
5. Do not store with water in the tank.

CAUTION! Never store the unit while wet, as this can promote mold and mildew growth.

Regulatory Information

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

Troubleshooting

Reset: Unplug unit for 10 minutes, then plug back in.

Service: 1-800-332-1110; www.honeywellpluggedin.com