Honeywell Humidifier HWM845BC Manual

The Honeywell HWM845BC is a top-fill cool mist humidifier designed for medium to large rooms. It features a 1.5-gallon tank capacity, adjustable humidity control, a wicking filter for demineralization, a quiet operation mode, an easy-to-clean design, an auto-shutoff function when empty, a refill indicator light, and a night light. Below are key sections for safety, features, setup, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Top-fill water tank, Wicking Filter, Control Panel, Mist Nozzle, Tank Handle, Refill Indicator, Night Light.

Installation & Setup

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

1. Remove all packaging materials from the humidifier and tank.
2. Install the wicking filter: Remove filter from package, soak in cool water for 15 minutes, then insert into the filter frame in the base.
3. Fill the tank: Carry tank to sink, remove cap, fill with cool, clean water. Replace cap securely.
4. Place tank on base: Align tank with base and set down gently. Ensure it is seated properly.
5. Plug into a 120V AC electrical outlet.

WARNING! Use only clean, cool water. Do not use hot water or additives. Place on a water-resistant surface.

First-Time Use

After setup, power on the humidifier and configure initial settings.

1. Power On: Press the POWER button. The unit will beep and the display will light up.
2. Set Humidity: Turn the HUMIDITY CONTROL dial to your desired setting (Low, Medium, High).
3. Adjust Mist Direction: Rotate the 360° mist nozzle to direct mist away from walls and furniture.
4. Night Light: Press the LIGHT button to turn the night light on or off.
5. Quiet Mode: Press the QUIET MODE button for reduced fan noise during sleep.

CAUTION! Ensure the filter is properly installed and saturated before first use to prevent damage.

Specifications

• Model: HWM845BC
• Tank Capacity: 1.5 gallons (5.7 liters)
• Room Coverage: Up to 500 sq ft (medium to large room)
• Run Time: Up to 24 hours on low setting
• Output: Up to 1.2 gallons per day
• Controls: Electronic touch controls with dial
• Filter Type: Demineralization wicking filter (HWF-100)
• Power Source: 120V AC, 60Hz
• Power Consumption: 30W
• Product Dimensions: 13.8" x 10.9" x 17.3"
• Weight (Empty): 7.5 lbs

Controls and Settings

Control Panel: POWER Button, HUMIDITY CONTROL Dial, QUIET MODE Button, LIGHT Button, REFILL Indicator.

Detailed Functions:

POWER: Turns humidifier on/off. HUMIDITY CONTROL Dial: Adjusts mist output (Low, Medium, High). QUIET MODE: Reduces fan speed for quiet operation. LIGHT: Toggles the blue night light on/off. REFILL Indicator: Red LED lights when water tank is empty or nearly empty.

Optimal Settings: For sleeping, use Low/Quiet Mode. For dry days, use Medium/High. Keep humidity between 40-60% for comfort.

Operation Guide

Daily operation for maintaining desired humidity levels.

1. Check water level daily via the transparent tank or refill indicator.
2. To refill: Unplug unit, lift tank off base, carry to sink, remove cap, fill with cool water, replace cap, return tank to base.
3. Adjust mist output as needed using the control dial.
4. Use quiet mode at night for undisturbed sleep.
5. The auto-shutoff will activate if the tank runs dry; refill to restart.

Tip: Use distilled or demineralized water to extend filter life and minimize white dust.

Maintenance & Cleaning

Regular cleaning prevents mold, mineral buildup, and ensures efficient operation.

1. Daily: Wipe exterior with a damp cloth.
2. Weekly: Clean tank and base.
   • Unplug and empty all water.
   • Fill tank with 1 cup white vinegar and cool water. Swirl and let sit 20 mins.
   • Scrub interior with soft brush. Rinse thoroughly.
   • Wipe base with vinegar-dampened cloth. Rinse.
3. Monthly: Deep clean all parts as above; inspect filter.

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

Filter Replacement

The wicking filter (HWF-100) should be replaced every 1-2 months, or when discolored or hardened.

1. Unplug humidifier and remove water tank.
2. Remove the old filter from the filter frame in the base.
3. Soak the new filter in cool water for 15 minutes.
4. Insert the saturated filter into the frame, ensuring it sits flat.
5. Reassemble tank and base, then plug in.

Note: Using the humidifier without a filter or with a dirty filter can cause mineral dust and reduce performance.

Care & Storage

When not in use for extended periods, prepare the humidifier for storage.

1. Unplug the unit.
2. Empty and thoroughly clean the tank and base as per cleaning instructions. Allow all parts to air dry completely.
3. Remove and discard the old filter.
4. Store the humidifier in its original box or a clean, dry place.
5. Do not store with water in the tank or base.

CAUTION! Ensure the unit is completely dry before storage to prevent mold or mildew growth.

Regulatory Information

FCC Compliance: This device complies with Part 15 of the FCC Rules. Copyright © Honeywell International Inc. Honeywell and the Honeywell logo are trademarks of Honeywell International Inc. For support, visit www.honeywellhumidifiers.com or contact customer service at 1-800-332-1110.

Troubleshooting

Reset: Unplug for 60 seconds, then restart. For persistent issues, contact customer service.

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