Sunny Smiles H24 USB Car Humidifier with Starry Sky Projector - Is It Worth It in 2026?
A pocket-sized USB humidifier built for car and travel use at $25.99. It adds moisture to your personal space but lacks the tank size for full room coverage.
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Best For
How this humidifier scores for different use cases
At 6.4 ounces and 2.8 x 6.3 inches, this is exceptionally portable. USB power, car auto start/stop, and compact design make it ideal for travel and car use.
USB-powered, compact, quiet, and lightweight at 6.4 ounces make it a solid desktop companion. Variable mist control and timer add convenience for workday use.
BPA-free materials, cool mist only, auto shut-off, and quiet operation check key nursery boxes. However, the very small tank capacity means frequent refills, reducing overnight reliability for a baby's room.
Quiet operation and auto shut-off are good for sleep, but the tiny size suggests a very small tank (likely under 300mL) that won't last through the night without refilling.
At 2.8 x 2.8 x 6.3 inches and 6.4 ounces, this is a personal-sized humidifier with virtually no capacity for large room or whole home coverage.
No WiFi, no app control, no voice assistant integration. This product has zero smart home capability.
Our Verdict
The Sunny Smiles H24 is a tiny travel humidifier, not a room humidifier. At 2.8 inches wide and 6.4 ounces, it fits in your cup holder or on a nightstand.
USB power and car auto start/stop make this a true car companion. You plug it in and forget about it.
The starry sky projector adds a fun touch for kids' rooms or date nights. The timer and two mist modes give you basic control.
BPA-free materials and auto shut-off handle the safety basics well. You get peace of mind in a nursery setting.
Do not expect this to humidify a full bedroom. The ultra-compact size means a very small water tank that needs frequent refills.
At $25.99, you pay for portability and convenience. This works best as a personal humidifier for your car, desk, or hotel room.
What We Like
- Weighs only 6.4 ounces, making it one of the lightest humidifiers you can carry anywhere
- USB powered with car auto start/stop lets you humidify your car hands-free while driving
- Built-in starry sky projector doubles as a night light for bedrooms and nurseries
- BPA-free materials and auto shut-off keep you safe when water runs low
- Timer function and two mist modes (continuous and intermittent) give you control over humidity
What Could Be Better
- No aromatherapy function, so you cannot use essential oils with this humidifier
- No top-fill design makes refilling the small tank less convenient
- No WiFi, app control, or voice assistant support for smart home users
- No warm mist option limits use during cold and flu season
- No easy-clean design feature, and the small opening may make interior cleaning difficult
Standout Features
Full Specifications
Physical & Dimensions
| Weight | 6.4 |
| Width | 2.8 |
| Depth | 2.8 |
| Height | 6.3 |
Features
Included Features
Not Included
Frequently Asked Questions
Common questions aboutSunny Smiles Humidifiers for room car,With Cool Mist USB Powered Car Auto Start/Stop,Quiet Air Humidifiers,Starry Sky Projector adds romance, timed shut-off,Portable,Continuous Intermittent Mist
How long does this humidifier run on a full tank?
The exact tank capacity is not listed. Given its 2.8 x 2.8 x 6.3-inch size, the tank likely holds around 200-300mL. Expect 4-8 hours on intermittent mist mode and less on continuous mode.
Can this humidifier cover a full bedroom?
No. This is a personal-sized humidifier designed for close-range use. It works best within 2-3 feet on a desk, nightstand, or car cup holder.
Does it work while driving in a car?
Yes. It has a car auto start/stop feature. It turns on when your car starts and shuts off when you turn off the engine. It runs on USB power from your car port.
Can I use essential oils in this humidifier?
No. This humidifier does not have an aromatherapy feature. Adding essential oils could damage the ultrasonic element inside.
Is the starry sky projector bright enough to use as a night light?
The projector creates colorful star patterns on walls and ceilings. It serves as a decorative night light for bedrooms and nurseries, adding ambient lighting to your space.
Best For
How this humidifier scores for different use cases
At 6.4 ounces and 2.8 x 6.3 inches, this is exceptionally portable. USB power, car auto start/stop, and compact design make it ideal for travel and car use.
USB-powered, compact, quiet, and lightweight at 6.4 ounces make it a solid desktop companion. Variable mist control and timer add convenience for workday use.
BPA-free materials, cool mist only, auto shut-off, and quiet operation check key nursery boxes. However, the very small tank capacity means frequent refills, reducing overnight reliability for a baby's room.
Quiet operation and auto shut-off are good for sleep, but the tiny size suggests a very small tank (likely under 300mL) that won't last through the night without refilling.
At 2.8 x 2.8 x 6.3 inches and 6.4 ounces, this is a personal-sized humidifier with virtually no capacity for large room or whole home coverage.
No WiFi, no app control, no voice assistant integration. This product has zero smart home capability.
Scores
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