Honeywell Humidifier HWM-4040-1 Manual

The Honeywell HWM-4040-1 is a 4-gallon cool mist humidifier designed for medium to large rooms up to 400 sq. ft. It features a wicking filter system, adjustable humidity control, a refill indicator light, a 1.5-gallon tank capacity with easy-fill design, quiet operation, and an auto-shutoff function when empty or the tank is removed. Below are key sections for safety, features, installation, setup, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Water Tank, Base with Motor, Wick Filter, Humidity Control Dial, Refill Indicator Light, Power Cord.

Installation & Setup

Unpack and inspect all parts. Place on a level, stable surface away from walls and electronics.

1. Remove all packaging materials from tank and base.
2. Install the wick filter: Remove from plastic, soak in cool water for 15-20 minutes, then insert into base slot.
3. Fill the tank: Carry tank to sink, remove cap, fill with cool tap water up to fill line, replace cap securely.
4. Place tank onto base: Align tank with base and set down firmly until it clicks into place.
5. Plug into a standard 120V AC outlet.

WARNING! Use only clean, cool tap water. Do not use hot water or add essential oils, as this can damage the unit. Ensure unit is on a waterproof surface.

First-Time Use

After installation, follow these steps for initial operation.

1. Power on: Plug in unit. The refill light may illuminate if tank is not full.
2. Set humidity: Turn the control dial to desired setting (Low to High).
3. Allow startup: The unit will begin producing a cool mist within a few minutes as the wick saturates.
4. Monitor performance: Check that mist is emitted from the top grille and adjust dial as needed.

CAUTION! Never operate without the wick filter installed. Do not block mist outlet.

Specifications

• Model: HWM-4040-1
• Tank Capacity: 1.5 gallons (5.7 liters)
• Coverage Area: Up to 400 sq. ft.
• Run Time: Up to 24 hours on low setting
• Mist Output: Adjustable, up to 0.5 gallons per day
• Filter Type: Replaceable wick filter (Part #HWF-4040)
• Power: 120V AC, 60Hz
• Power Consumption: 30W max
• Dimensions (LxWxH): 12.5" x 10.5" x 17.5"
• Weight (empty): 5.5 lbs
• Warranty: 1-year limited

Controls and Settings

Primary control is the Humidity Control Dial on the front of the base.

Control Dial: Rotate clockwise from OFF to LOW, MEDIUM, and HIGH mist output. Setting depends on room dryness and desired comfort level.

Refill Indicator Light: LED on front panel. Illuminates RED when water tank is empty or nearly empty. Turns off when tank is refilled and properly seated.

Auto Shut-Off: Built-in safety feature. Unit will power off automatically when tank is empty or if tank is removed while unit is running.

Operation Guide

For daily use, follow these guidelines.

1. Fill tank daily: Use cool tap water only. Do not overfill beyond MAX line.
2. Set mist level: Adjust dial based on room conditions. Start on MEDIUM and adjust after a few hours.
3. Monitor humidity: Ideal indoor humidity is 30-50%. Use a hygrometer if available.
4. Refill when light comes on: Unplug unit, remove tank, refill, replace tank, and plug back in.
5. Night use: LOW setting is recommended for quiet operation in bedrooms.

Tip: Place humidifier on a towel or waterproof tray to protect furniture from accidental moisture.

Maintenance & Cleaning

Regular cleaning prevents mold and mineral buildup. Clean every 1-2 weeks during use.

1. Unplug unit and remove tank.
2. Empty any remaining water from base.
3. Clean tank: Use mild dish soap and warm water. Rinse thoroughly. Do not submerge base in water.
4. Clean base: Wipe interior with a soft cloth dampened with a mixture of white vinegar and water (1:1) to remove scale. Rinse with clean water.
5. Dry completely: Allow all parts to air dry before reassembling.
6. Reinstall wick filter if still usable (replace every 1-2 months).

WARNING! Never use harsh chemicals, abrasives, or detergents. Do not immerse motor base in water.

Filter Replacement

The wick filter should be replaced every 1-2 months or when visibly discolored or hardened.

1. Turn off and unplug humidifier.
2. Remove water tank and empty base.
3. Remove old filter: Pull straight up from the base slot.
4. Prepare new filter: Soak new HWF-4040 filter in cool water for 15-20 minutes.
5. Insert new filter: Place into slot, ensuring it sits flat against the base.
6. Reassemble tank and base, then refill with water.

Note: Using the unit without a filter or with a dirty filter reduces performance and may damage the unit.

Care & Storage

When not in use for extended periods, prepare unit for storage.

1. Unplug and empty all water from tank and base.
2. Clean thoroughly as per cleaning instructions.
3. Remove and discard old wick filter.
4. Allow all parts to dry completely for 24-48 hours.
5. Reassemble without filter and store in original box or a dry place.
6. Do not store with water in tank or base.

CAUTION! Store in a cool, dry place away from direct sunlight.

Regulatory Information

FCC Compliance: 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 related marks are trademarks of Honeywell. For support, visit www.honeywellhumidifiers.com or contact 1-800-332-1110.

Troubleshooting

Reset: Unplug for 1 minute, then plug back in.

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