Honeywell Humidifier HCM-750-TGT Manual

The Honeywell HCM-750-TGT is a top-fill ultrasonic cool mist humidifier designed for large rooms up to 750 sq. ft. It features a 1.5-gallon tank, adjustable mist output (low/medium/high), a 360-degree mist nozzle, an easy-to-read water level indicator, a night light with on/off option, an auto shut-off function when empty, and a filter-free design. Below are key sections for safety, features, setup, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Installation & Setup 3. First-Time Use 4. Specifications 5. Controls and Operation 6. Filling the Water Tank 7. Maintenance & Cleaning 8. Filter Information 9. Regulatory Information 10. Troubleshooting

Features at a Glance

Key components: 1.5-gallon top-fill water tank, Ultrasonic mist generator, Control panel with dial, 360-degree adjustable mist nozzle, Water level indicator, Night light, Power cord.

Feature	Description
Top-fill design	Easy to fill without removing tank
Ultrasonic cool mist	Quiet operation; visible cool mist
Adjustable mist output	Low, Medium, High settings
360-degree mist nozzle	Direct mist where needed
Water level indicator	Clear view of remaining water
Night light	Soft blue light with on/off switch
Auto shut-off	Turns off when tank is empty
Filter-free	No replacement filters needed
Large room coverage	Up to 750 square feet
Run time	Up to 24 hours on low setting

Installation & Setup

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

Remove all packaging materials from inside and outside the unit.
Place the humidifier on a waterproof mat or towel to protect surfaces.
Ensure the unit is on a level surface to prevent leaking.
Keep at least 12 inches of space around the unit for proper mist dispersion.
Plug the power cord into a standard 120V AC outlet.

WARNING! Do not place on carpets or uneven surfaces. Keep away from children and pets.

First-Time Use

Before first use, clean the tank as described in the Maintenance section.

Fill the tank with cool, clean tap or distilled water (see Filling section).
Place the tank securely on the base.
Plug in the unit. The power indicator light will illuminate.
Turn the control dial to select desired mist output (Low, Medium, High).
Adjust the 360-degree nozzle to direct mist away from walls and furniture.
To use the night light, press the light button on the control panel.

CAUTION! Use only clean, cool water. Do not add essential oils or other additives.

Specifications

Model: HCM-750-TGT
Tank Capacity: 1.5 gallons (5.7 liters)
Coverage Area: Up to 750 sq. ft.
Mist Output: Adjustable up to 1.5 gallons per day
Run Time: Up to 24 hours (Low setting)
Power Source: 120V AC, 60Hz
Power Consumption: 30W max
Dimensions: 13.8" H x 10.7" W x 10.2" D
Weight: 6.2 lbs (empty)
Water Type: Tap or distilled water recommended
Warranty: 3-year limited warranty

Controls and Operation

Control Panel: Power indicator light, Mist control dial (Off/Low/Medium/High), Night light button.

Operation: Turn dial to select mist output. The unit will run until the water tank is empty, then auto shut-off activates. The night light can be turned on/off independently of mist operation.

Settings: Low for quiet nighttime operation, Medium for general use, High for maximum humidity output. Adjust nozzle direction as needed. The water level indicator shows remaining water; refill when level is low.

Filling the Water Tank

Top-fill design allows easy refilling without removing the tank.

Turn the control dial to OFF and unplug the unit.
Open the top fill cap on the tank.
Pour clean, cool water into the opening. Use a pitcher if needed.
Do not overfill. The maximum fill line is indicated inside the tank.
Close the fill cap securely.
If any water spills on the base, wipe dry before plugging in.
Plug in and turn dial to desired setting.

Tip: Using distilled water can reduce white dust. Never use hot water.

Maintenance & Cleaning

Regular cleaning prevents mold and mineral buildup.

Daily: Empty any unused water and rinse the tank with clean water.
Weekly: Deep clean tank and base with a mixture of white vinegar and water (1:1 ratio).
Fill tank with vinegar solution, let sit for 20 minutes, then scrub with soft brush.
Rinse thoroughly with clean water until vinegar smell is gone.
Wipe the exterior with a damp cloth; never immerse in water.
Dry all parts completely before reassembling.

CAUTION! Unplug before cleaning. Do not use abrasive cleaners or bleach.

Filter Information

This is a filter-free humidifier. No replacement filters are required. However, mineral deposits may form if using hard water. Clean regularly with vinegar as described. For areas with very hard water, using distilled water is recommended to minimize maintenance.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits for residential use. Copyright © Honeywell International Inc. For support, visit www.honeywellhumidifiers.com or contact 1-800-332-1110. This product is covered by a 3-year limited warranty. Register your product online for faster service.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No mist output	Empty tank/not plugged in	Fill tank with water; ensure unit is plugged in and dial is not on OFF.
Low mist output	Mineral buildup/dial setting	Clean tank and ultrasonic module; set dial to High.
White dust around unit	Hard water minerals	Use distilled water; clean more frequently.
Water leaking	Overfilled/not level/cap loose	Do not overfill; place on level surface; ensure fill cap is tight.
Unit not turning on	Power issue/auto shut-off	Check outlet; ensure tank has water (auto shut-off activates when empty).
Unusual noise	Vibration/water level low	Place on level surface; fill tank; check for debris in tank.
Night light not working	Button not pressed/LED issue	Press night light button; if still not working, contact support.

Reset: Unplug for 5 minutes, then restart.

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