RDH-370 - Humidifier Royal Sovereign - Free user manual and instructions
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| Product Type | Ultrasonic Humidifier |
| Brand | Royal Sovereign |
| Model | RDH-370 |
| Coverage Area | Up to 300 sq ft |
| Tank Capacity | 1.5 gallons (5.7 liters) |
| Humidification Output | Up to 12 gallons per day |
| Runtime on Full Tank | Up to 24 hours on low setting |
| Noise Level | < 30 dB on low setting |
| Dimensions (H x W x D) | 14.5 x 10.5 x 8.5 inches |
| Weight | 4.5 lbs (2.04 kg) |
| Power Supply | 120V, 60Hz, AC |
| Power Consumption | 25 watts |
| Filter Type | Ceramic or optional demineralization cartridge |
| Adjustable Mist Output | Yes, variable speed control |
| Auto Shut-Off | Yes, when tank is empty |
| Humidistat | Built-in, maintains desired humidity level |
| Cleaning | Weekly cleaning recommended with vinegar solution |
| Maintenance | Replace filter every 3-6 months depending on water hardness |
| Safety Features | Overheat protection, tip-over switch, auto shut-off |
| Warranty | 1 year limited warranty |
| Compatible Accessories | Model RDH-370 replacement filter (RDH-F370) |
Frequently Asked Questions - RDH-370 Royal Sovereign
How do I clean the Royal Sovereign RDH-370 humidifier?
Unplug the unit. Remove the tank and fill with a solution of 1 part white vinegar to 3 parts water. Let it sit for 30 minutes, then rinse thoroughly. Wipe the base with a damp cloth. Do not immerse the base in water.
What type of water should I use in my humidifier?
Distilled or demineralized water is recommended to minimize mineral buildup. Tap water can cause white dust and reduce the lifespan of the filter.
How often should I replace the filter?
Replace the filter every 3-6 months, depending on water hardness and usage. A clogged filter reduces performance and can cause odors.
Why is my humidifier not producing mist?
Check if the water tank is empty. Ensure the unit is placed on a level surface. Clean the nebulizer and water tank to remove mineral deposits. If the problem persists, the filter may need replacement.
Can I use essential oils in the RDH-370?
No, essential oils should not be used. They can damage the plastic components and void the warranty. Only water or approved additives recommended by Royal Sovereign.
What is the ideal humidity level to set?
The recommended indoor humidity level is between 40% and 60%. The built-in humidistat allows you to set your desired level, and the unit will automatically cycle to maintain it.
How do I store the humidifier when not in use?
Drain all water, clean and dry the tank and base completely. Store in a cool, dry place. Remove the filter and dispose of it if it has been used; install a new filter before next use.
Why does my humidifier make a gurgling sound?
Gurgling is normal when water is being drawn into the nebulizer chamber. If the sound is excessive, check that the unit is level and the tank is properly seated. Also ensure the water level is adequate.
What is the coverage area of the RDH-370?
The Royal Sovereign RDH-370 can humidify rooms up to 300 square feet, making it suitable for medium-sized bedrooms, living rooms, or offices.
How do I reset the filter indicator light?
After replacing the filter, press and hold the reset button for 3 seconds until the indicator light turns off. Refer to the manual for exact location of the reset button.
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USER MANUAL RDH-370 Royal Sovereign
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Product information
Brand : Royal Sovereign
Model : RDH-370
Category : Humidifier