MS.Tranquil 9L Cool Mist Humidifier: Can This 2.4 Gal Tank Handle Your Whole House in 2026?
A large-capacity humidifier with a 9L tank and 600 sq ft coverage that excels at hands-off whole-room humidification, but lacks smart home connectivity.
Check Price on AmazonAs an Amazon Associate we earn from qualifying purchases. Prices may vary.
Key Specifications
Best For
How this humidifier scores for different use cases
The 9L tank, 300mL/h output, and 600 sq ft coverage make this a strong large room performer. The 50+ hour runtime means less frequent refilling, which is ideal for whole-home or basement use.
The 9L tank provides 50+ hours of runtime, and noise under 35dB with sleep mode (all lights off) makes it well-suited for overnight bedroom use. Auto shut-off and remote control add convenience without getting out of bed.
Cool mist only and auto shut-off are good safety features, and under 35dB is reasonably quiet. However, no BPA-free certification is listed, no night light is included, and the unit is quite tall at 28 inches which could be a tip-over concern.
At 28 inches tall and 5 pounds with a 9L tank, this is far too large for desktop use. It is designed for floor placement in large spaces, not personal desk humidification.
No WiFi, no app control, and no voice assistant compatibility severely limit smart home integration. The remote control and humidity sensor are the only 'smart' features available.
At 28 inches tall, 5 pounds, and requiring wall power, this humidifier is not portable or travel-friendly in any way. It is a full-size home unit.
Our Verdict
The MS.Tranquil 9L humidifier delivers where it counts most. Its huge tank and 600 sq ft coverage handle large rooms with ease.
You can fill it from the top and forget about it for over two days. The built-in humidistat keeps your room at the exact humidity you pick.
Three mist speeds and a 360-degree nozzle let you direct moisture where you need it. The remote control saves you trips across the room.
Noise stays under 35dB, and sleep mode turns off all lights. Your bedroom stays dark and quiet through the night.
The biggest gap is smart features. You get no WiFi, no app, and no Alexa support. If you want phone control, look elsewhere.
At $119.99, you pay a fair price for the large capacity and convenience features. Budget shoppers can find smaller units for less.
What We Like
- Huge 9-liter tank runs for over 50 hours on a single fill
- Covers up to 600 square feet, enough for large rooms and basements
- Top-fill design and modular parts make cleaning and refilling simple
- Built-in humidistat automatically maintains your chosen humidity level
- Remote control and 12-hour timer let you adjust settings from across the room
What Could Be Better
- No WiFi or app control for smart home automation
- No warm mist or dual mist option for cold and flu season
- No night light feature for nursery or dark room visibility
- Mist output of 300mL/h sits at average, not high-performance level
- No BPA-free certification listed for the water tank materials
Standout Features
Full Specifications
Humidification Performance
| Coverage Area | 600 |
Noise & Comfort
| Noise Level | 0 – 35 – dB |
Physical & Dimensions
| Weight | 5 |
| Width | 5 |
| Depth | 7 |
| Height | 28 |
Features
Included Features
Not Included
Frequently Asked Questions
Common questions aboutHumidifiers for Bedroom, 9L/2.4Gal Top Fill Humidifier, Large Room Cool Mist Humidifier for Home Plants and Office Basement Whole House with Remote Control Timer, Auto Shut Off
How long does the MS.Tranquil humidifier run on a full tank?
The 9-liter tank provides over 50 hours of continuous mist. Runtime varies by mist speed setting. On the lowest setting, you may get even longer use before needing a refill.
How loud is this humidifier during sleep?
It runs at less than 35dB, which is about the volume of a quiet whisper. Sleep mode turns off all LED lights so the display does not disturb your rest.
Can I use essential oils in this humidifier?
Yes. It has a built-in aromatherapy function. Add your favorite essential oils to the aroma tray and the mist will carry the scent throughout your room.
How big of a room can this humidifier cover?
It covers up to 600 square feet. This works well for large bedrooms, living rooms, basements, and open office spaces.
Does this humidifier turn off automatically when the water runs out?
Yes. The auto shut-off feature turns the humidifier off when the water level gets too low. This protects the unit from running dry and is an important safety feature.
Best For
How this humidifier scores for different use cases
The 9L tank, 300mL/h output, and 600 sq ft coverage make this a strong large room performer. The 50+ hour runtime means less frequent refilling, which is ideal for whole-home or basement use.
The 9L tank provides 50+ hours of runtime, and noise under 35dB with sleep mode (all lights off) makes it well-suited for overnight bedroom use. Auto shut-off and remote control add convenience without getting out of bed.
Cool mist only and auto shut-off are good safety features, and under 35dB is reasonably quiet. However, no BPA-free certification is listed, no night light is included, and the unit is quite tall at 28 inches which could be a tip-over concern.
At 28 inches tall and 5 pounds with a 9L tank, this is far too large for desktop use. It is designed for floor placement in large spaces, not personal desk humidification.
No WiFi, no app control, and no voice assistant compatibility severely limit smart home integration. The remote control and humidity sensor are the only 'smart' features available.
At 28 inches tall, 5 pounds, and requiring wall power, this humidifier is not portable or travel-friendly in any way. It is a full-size home unit.
Scores
Check current price and availability
Check Price on AmazonAs an Amazon Associate we earn from qualifying purchases. Prices may vary.
Tags
Other Humidifiers You Might Like
Browse All →
Air Humidifier & Purifier 2-in-1 – Ultra-Quiet for Home, Bedroom, Office | Auto Mode, Ideal for Pets and Smokers
Abolee Humidifiers for Bedroom, 4.5L Top Fill Cool Mist Humidifiers with Essential Oil Diffuser, 45H Runtime, Quiet Ultrasonic Humidifiers for Home, Large Room, Baby Nursery and Plant, 360° Nozzle
Abolee Bedroom Humidifier, 4.5L Cool Mist with Essential Oil Diffuser, 45H Runtime, Quiet Ultrasonic for Home, Large Room, Baby Nursery and Plants, 360 Nozzle
Small Humidifiers for Bedroom, 3in1 Desk Humidifier for Office USB with Essential Oil Diffuser 7LED Quiet Easy Clean, Portable Humidifiers for Travel Home Plant Nightstand Hotel Nursery
Ready to buy the MS.Tranquil MS-jsq1white?
Free shipping available on eligible orders.
See Today's Price on Amazon