Honeywell Humidifier HUL588 Series Manual

The Honeywell HUL588 Series is a cool mist humidifier designed to add comfortable moisture to dry air in medium to large rooms. It features a 1.5-gallon tank, adjustable humidity control, a wicking filter for demineralization, a quiet fan, an easy-to-fill tank, an auto-shutoff feature, and an essential oil tray option. Below are key sections for safety, features, setup, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: 1.5-Gallon Water Tank, Demineralization Cartridge (Wicking Filter), Humidistat Control Dial, Mist Nozzle, Quiet Fan, Essential Oil Tray, Power Cord, and Auto Shut-Off.

Installation & Setup

Unpack and inspect all components. Place on a flat, stable, water-resistant surface.

1. Remove tank: Lift tank from base.
2. Install filter: Remove filter from packaging and insert into filter compartment in base.
3. Fill tank: Turn tank upside down, remove cap, fill with cool tap water to MAX line. Replace cap securely.
4. Place tank: Return tank to base, ensuring it sits firmly.
5. Plug in: Connect power cord to outlet.

WARNING! Place on a level surface away from heat sources and electronics. Do not block mist outlet.

First-Time Use

Power on humidifier; set desired humidity level.

1. Initial setup: Ensure filter is soaked for 15-20 minutes before first use.
2. Power on: Plug in unit. The power light will illuminate.
3. Set humidity: Turn humidistat dial to desired setting (LOW to HIGH).
4. Adjust mist: Rotate nozzle to direct mist away from walls and furniture.
5. Monitor: Check water level daily; refill as needed.

CAUTION! Use only cool tap or distilled water. Do not use hot water or additives unless specified.

Specifications

• Model Series: HUL588 (Cool Mist Humidifier).
• Tank Capacity: 1.5 gallons (5.7 liters).
• Room Coverage: Up to 400 square feet.
• Run Time: Up to 24 hours on low setting.
• Humidity Control: Adjustable dial with auto shut-off.
• Filter Type: Demineralization (Wicking) Cartridge.
• Noise Level: Quiet operation (approx. 30 dB on low).
• Power Source: 120V AC, 60Hz.
• Dimensions: Approximately 12.5" H x 10.5" W x 10.5" D.
• Weight: 5.5 lbs (empty).

Controls and Operation

Main Controls: Humidistat Dial (LOW to HIGH), Power Indicator Light, Mist Nozzle.

Operation: Plug in unit. Turn dial clockwise to increase mist output. The unit will run until the desired humidity is reached or the tank is empty. Auto shut-off activates when tank is removed or empty. The power light remains on when operating.

Settings: LOW for quiet nighttime operation or maintaining humidity. MED for average dry conditions. HIGH for rapid humidification in very dry air.

Maintenance & Cleaning

Regular cleaning prevents mold and mineral buildup.

1. Unplug unit and remove tank.
2. Empty any remaining water from tank and base.
3. Clean tank: Use mild detergent and soft brush. Rinse thoroughly.
4. Clean base: Wipe interior with damp cloth; do not submerge.
5. Disinfect: Periodically use manufacturer-recommended cleaner or vinegar solution (1 part white vinegar to 3 parts water). Rinse well.
6. Dry completely before reassembly.

Tip: Clean every 1-2 weeks during use; more often in hard water areas.

Filter Replacement

Replace demineralization cartridge every 1-2 months or as needed.

1. Unplug unit and remove tank.
2. Open filter compartment on base.
3. Remove old filter and discard.
4. Insert new filter (do not rinse).
5. Soak new filter in water for 15-20 minutes before first use.
6. Reassemble and run unit.

WARNING! Using the unit without a filter or with a clogged filter reduces performance and may cause white dust.

Using Essential Oils

Optional essential oil tray (if included).

1. Ensure unit is unplugged and dry.
2. Place a few drops of essential oil onto the tray (do not exceed 5 drops).
3. Insert tray into designated slot on unit.
4. Operate as normal. The mist will carry the scent.

CAUTION! Do not add oils directly to water tank or mist outlet. Use only 100% pure essential oils. Clean tray after each use.

Care & Storage

When not in use for extended periods:

1. Unplug and empty all water.
2. Clean and disinfect tank and base as per instructions.
3. Remove and discard old filter.
4. Dry all parts completely.
5. Reassemble and store in original box in a cool, dry place.

CAUTION! Never store with water inside. This prevents mold and mineral deposits.

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 limited warranty; see packaging or website for details.

Troubleshooting

Reset: Unplug for 30 seconds, then restart.

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