Honeywell Humidifier HWM 335 - 3G Warm Manual

The Honeywell HWM 335 - 3G Warm is a warm mist humidifier designed to add comfortable moisture to dry air. It features a 1-gallon tank capacity, adjustable humidity control, a medicine cup for inhalants, an auto shut-off function when the tank is empty, an easy-to-clean design, and an essential oil tray. Ideal for medium-sized rooms up to 300 sq ft. 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, Essential Oil Tray, and Power Cord.

Installation & Setup

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

1. Remove the water tank from the base.
2. Fill the tank with cool, clean tap water. Do not use hot water or additives unless specified.
3. Securely screw the tank cap back on and wipe any excess water from the exterior.
4. Place the filled tank back onto the base unit, ensuring it is seated properly.
5. Plug the power cord into a standard 120V AC electrical outlet.

WARNING! Place humidifier on a waterproof mat or towel. Keep out of reach of children and pets. Do not block mist outlet.

First-Time Use

Before first use, clean the tank and base according to the Cleaning section.

1. Fill the tank with clean, cool water and place it on the base.
2. Plug in the unit. The power indicator light will illuminate.
3. Turn the Mist Control knob to the desired setting (Low for quiet operation, High for maximum output).
4. Warm mist should begin to emit from the outlet within a few minutes.
5. Adjust the directional grille (if equipped) to direct mist away from walls and furniture.

CAUTION! The mist and surfaces near the outlet will become warm. Do not touch during operation.

Specifications

• Model: HWM 335 - 3G Warm
• Tank Capacity: 1 Gallon (3.8 Liters)
• Room Coverage: Up to 300 sq ft (Medium Room)
• Run Time: Up to 24 hours on Low setting
• Mist Type: Warm Mist
• Mist Output: Adjustable (Low/High)
• Power: 120V AC, 60Hz
• Power Consumption: 200W (approx.)
• Dimensions (LxWxH): Approx. 10" x 10" x 13"
• Weight (Empty): 4.5 lbs
• Special Features: Medicine Cup, Essential Oil Tray, Auto Shut-Off

Controls and Operation

Control Panel: Located on the front or top of the base unit.

Power/Mist Control Knob: Rotate clockwise from OFF to LOW to HIGH. The unit powers on when rotated away from OFF.

Indicator Light: Illuminates when unit is ON. May flash or change color if the tank is empty (refer to model-specific manual).

Medicine Cup: Located on the base. Add inhalants or a vapor pad. Do not add liquids directly to the cup unless specified.

Essential Oil Tray: A separate, removable tray. Add a few drops of essential oil. Do not add oil directly to the water tank.

To Operate: Fill tank, place on base, plug in, turn knob to desired setting. To stop, turn knob to OFF and unplug.

Maintenance & Cleaning

Regular cleaning prevents mineral buildup and microbial growth. Clean every 1-2 weeks, or more often in hard water areas.

1. Unplug the unit and remove the water tank.
2. Empty any remaining water from the tank and base.
3. Clean the tank with a mild detergent and a soft brush or cloth. Rinse thoroughly.
4. Wipe the base interior and exterior with a damp cloth. Do not submerge the base in water.
5. Descale as needed using a mixture of white vinegar and water (1:1 ratio). Let sit for 20 minutes, then scrub and rinse thoroughly.
6. Allow all parts to air dry completely before reassembling and using.

Tip: Use distilled or demineralized water to significantly reduce scale buildup.

Using Essential Oils

Only use the designated essential oil tray. Do not add oils directly to the water tank or medicine cup.

1. Ensure the unit is OFF and unplugged.
2. Pull out the essential oil tray (usually located near the mist outlet).
3. Add 2-3 drops of your preferred 100% pure essential oil to the tray pad or tray itself.
4. Slide the tray back into its slot.
5. Operate the humidifier as normal. The warm mist will carry the fragrance.
6. Clean the oil tray regularly with soap and water to prevent clogging and oil residue buildup.

WARNING! Use oils sparingly. Some oils may damage plastic components. Discontinue use if irritation occurs.

Safety Features

Auto Shut-Off: The unit will automatically power off when the water tank is empty or improperly seated, preventing damage to the heating element.

Cool-Touch Exterior: Designed to remain cool to the touch during operation.

Tip-Over Protection: Some models may include a switch that turns the unit off if it is knocked over.

Overheat Protection: Internal safety device protects against overheating.

Care & Storage

When not in use for extended periods:

1. Unplug the unit.
2. Empty and thoroughly clean the tank and base as per the Cleaning section.
3. Allow all parts to dry completely.
4. Reassemble and store in the original box or a protective bag in a cool, dry 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 appliance 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, visit www.honeywellpluggedin.com or contact Honeywell Customer Care at 1-800-332-1110.

Troubleshooting

Reset: Unplug the unit for 5 minutes, then plug back in.

Service: For repairs, do not attempt to disassemble the unit. Contact Honeywell Customer Care at 1-800-332-1110 or visit www.honeywellpluggedin.com.