Disclosure: As an Amazon Associate, we earn from qualifying purchases. If you click a link on this page and make a purchase, we may receive a small commission at no extra cost to you.
Dry indoor air can leave your bedroom or office feeling uncomfortable, but you may not need a large or complicated humidifier to add moisture to a modest space. The Pure Enrichment MistAire Ultrasonic Cool Mist Humidifier is a compact 1.7-liter model designed for rooms up to 250 square feet, with two mist settings and quiet ultrasonic operation. Its strongest points are simple controls, long low-setting runtime, a directional nozzle, and automatic shut-off. The main tradeoffs are its bottom-fill tank, lack of automatic humidity sensing, and the regular cleaning that comes with any ultrasonic humidifier.
Quick Verdict
Rating: 8.5/10
Best For: Bedrooms, nurseries, home offices, and other rooms up to 250 sq. ft. where you want simple cool-mist operation.
Bottom Line: The MistAire combines a compact footprint with up to 25 hours of runtime on low and useful safety features. It is a good fit for straightforward daily humidification, but buyers wanting top-fill convenience, a built-in humidistat, or aromatherapy support should consider a different model.
| Specification | Detail |
|---|---|
| Brand | Pure Enrichment |
| Model | PEHUMIDIF |
| Product Type | Ultrasonic cool mist humidifier |
| Tank Capacity | 1.7 liters |
| Room Coverage | Up to 250 sq. ft. |
| Dimensions | 8 × 6 × 9 inches |
| Weight | 1.5 lb |
| Mist Settings | 2, high and low |
| Runtime | Up to 12 hours on high; up to 25 hours on low |
| Mist Output | 120 mL/hour on high; 60 mL/hour on low |
| Nozzle | 360° directional mist nozzle |
| Night Light | 1 optional setting |
| Power | 100-240V, 50/60Hz, 12W |
| Automatic Shut-Off | Yes, when water is low or the tank is removed |
| Material Note | BPA-free humidifier |
| Included | Humidifier, AC power adapter, disk cleaning brush, user manual |
| Warranty | 5 years from Pure Enrichment |
What Is the Pure Enrichment MistAire?
The MistAire PEHUMIDIF is a tabletop ultrasonic humidifier that converts water into a fine cool mist. It does not heat the water, and it is designed for bedrooms, nurseries, offices, indoor plants, and similar medium-size areas rather than whole-house humidification.
The 1.7-liter tank feeds two mist levels. On high, the specified output is 120 mL per hour with runtime up to 12 hours. On low, output drops to 60 mL per hour and maximum runtime stretches to about 25 hours. Actual refill frequency will depend on the setting and how long you run it each day.
Who Should Buy It?
Best For
- You need a compact humidifier for a bedroom, nursery, desk, or office up to 250 sq. ft.
- You prefer straightforward high/low controls instead of menus, apps, or Wi-Fi features.
- You want quiet cool-mist operation with automatic low-water shut-off for overnight use.
Skip If
- You need to humidify a room larger than the rated 250 sq. ft. coverage area.
- You specifically want a top-fill tank or automatic humidity sensor.
- You want to diffuse essential oils directly through your humidifier.
Before You Buy: The MistAire is a humidifier, not an essential-oil diffuser. Pure Enrichment advises using only water in its humidifiers and warns against adding essential oils, Vicks, perfumes, or other substances that may damage the unit.
Mist Output and Room Coverage
The MistAire is rated for spaces up to 250 square feet. That makes it better suited to a typical bedroom, nursery, home office, or similar room than a large open-plan living area.
The high setting produces up to 120 mL of mist per hour, while the low setting produces 60 mL per hour. You can rotate the 360° mist nozzle toward the open part of the room rather than allowing the plume to blow directly onto a wall, curtain, electronic device, or other moisture-sensitive object.
There is no built-in humidistat that automatically targets a chosen relative-humidity percentage. You select high or low output manually, so a separate humidity meter can be useful if you want to keep track of room conditions.
Tank, Runtime, and Refilling
The 1.7-liter tank is one of the MistAire’s main advantages for its compact size. Pure Enrichment rates it for up to 25 hours on low and up to 12 hours on high. Low is therefore the practical choice when you want longer overnight or all-day operation without using the full output.
The tank is removable, but this is not a modern open-top refill design. You lift the tank from the base and refill it at a sink. That process is simple, but buyers who strongly prefer pouring water directly into an open top may find a newer top-fill humidifier more convenient.
Noise Level and Overnight Use
Ultrasonic operation avoids the fan noise associated with many evaporative humidifiers. The MistAire is designed for quiet use and is suitable for places where noise matters, including a bedroom or nursery.
An optional night light gives you a soft light when wanted, while the humidifier can still be used without relying on the light. Automatic shut-off turns the unit off when the water level becomes low or when the tank is removed.
The safety feature is useful for overnight operation, but it does not eliminate the need for proper placement, cleaning, and routine checks for moisture collecting around the unit.
Placement Tips for Better Results
Place the MistAire on a firm, level, water-resistant raised surface rather than directly on carpet or another absorbent material. Leave room around the unit so mist can disperse instead of collecting against nearby furniture or walls.
Keep the humidifier away from televisions, computers, chargers, books, papers, and other items that can be damaged by moisture. A waterproof mat or tray beneath the unit can also help protect furniture.
Use the rotating nozzle to aim the plume into open air. If you notice visible moisture collecting on a nearby surface, reduce the mist setting or reposition the humidifier.
Pro Tip: Start on the low setting when using the MistAire near a bed or desk. If the room still feels too dry and nearby surfaces remain dry, move to high rather than placing the nozzle closer to furniture or electronics.
Cleaning and Maintenance
Regular cleaning matters more with an ultrasonic humidifier than many first-time buyers expect. Pure Enrichment recommends rinsing and air-drying the unit between uses. Mineral scale may require more thorough cleaning weekly or every other week depending on your water and how heavily you use the humidifier.
The package includes a disk cleaning brush. When cleaning, unplug the humidifier first, empty the tank and base, and follow the manufacturer’s instructions. Do not submerge the powered base in water.
Distilled water is not required. However, if your tap water is hard, using distilled water can reduce mineral deposits and the white mineral dust sometimes associated with ultrasonic humidifiers.
What About the Decalcification Cartridge?
Pure Enrichment sells a compatible MistAire decalcification cartridge for model PEHUMIDIF. It is intended to reduce mineral buildup and white dust from tap-water minerals. If you use this accessory, the manufacturer recommends replacing the cartridge every six months for optimal performance.
Safety and Everyday Use
The MistAire uses cool mist, includes automatic low-water shut-off, and is described by Pure Enrichment as BPA-free. These are useful features for everyday household use, but the humidifier should still be operated according to the manual and kept where children or pets cannot knock it over.
Do not add essential oils, vapor rub, perfume, medication, or other additives to the water tank. This model is designed to humidify with water only. Also avoid positioning it where mist can continuously wet walls, bedding, wood surfaces, electronics, or other moisture-sensitive items.
A humidifier adds moisture to dry indoor air. It should not be treated as a medical device or as a substitute for medical care when you have persistent breathing, allergy, sinus, or other health concerns.
How It Performs in Real Use
For Overnight Use
The low setting is the most practical overnight choice because it combines quiet operation with the unit’s longest rated runtime. Automatic shut-off also means the machine is designed to stop when its water supply runs low.
For a Bedroom or Home Office
The 8 × 6-inch footprint takes up relatively little tabletop area, and the 9-inch height remains manageable on a dresser, shelf, or desk. The directional nozzle helps you point mist toward open space instead of directly at your work surface.
For a Nursery
The cool-mist design, quiet operation, optional night light, and low-water shut-off make the feature set appropriate for a nursery when the humidifier is positioned safely. Keep the unit and power cord out of a child’s reach and follow the manufacturer’s placement and cleaning instructions.
For Indoor Plants
Pure Enrichment also positions the MistAire for indoor plants. Its adjustable nozzle can help direct moisture into the surrounding area, but avoid creating consistently wet leaves, furniture, walls, or soil surfaces. Plant humidity needs vary, so the humidifier should be used according to the conditions required by your plants.
Customer Feedback on the MistAire
Feedback displayed by Pure Enrichment commonly highlights the MistAire’s quiet operation, compact size, straightforward setup, and directional mist output. Those comments align with the product’s strongest practical features: it is small enough for a nightstand or desk and does not require complicated controls.
Buyer feedback should still be considered alongside the model’s limitations. The tank needs routine cleaning, it lacks automatic humidity control, and buyers with mineral-heavy water may benefit from distilled water or the compatible decalcification cartridge.
Pros and Cons
Pros
- 1.7-liter tank provides up to 25 hours of operation on low.
- Two mist levels with 60 or 120 mL-per-hour output.
- 360° nozzle lets you direct the mist toward open space.
- Quiet ultrasonic operation works well in bedrooms and offices.
- Automatic low-water shut-off plus a 5-year manufacturer warranty.
Cons
- Bottom-fill tank is less convenient than a true top-fill design.
- No automatic humidity sensor or target-humidity control.
- Requires routine rinsing, cleaning, and mineral-scale maintenance.
Is It Worth the Price?
The MistAire makes the most sense as a straightforward compact humidifier rather than a feature-heavy smart appliance. You are paying for two mist levels, a useful 1.7-liter capacity, quiet ultrasonic operation, automatic shut-off, directional mist, and a long manufacturer warranty.
It offers strong value if those are the features you actually need. It is less compelling if you are willing to spend more for automatic humidity sensing, a true top-fill tank, larger room coverage, app controls, or a dedicated aromatherapy tray.
How It Compares to Alternatives
The Pure Enrichment MistAire Silver is a close alternative with the same 250 sq. ft. coverage and similar 12/25-hour high/low runtime, but its tank is slightly smaller at 1.5 liters. The standard MistAire reviewed here gives you the larger 1.7-liter tank.
If 250 sq. ft. is not enough, the MistAire XL steps up to a 1-gallon tank and coverage up to 500 sq. ft. If refill convenience and automatic humidity control matter more, Pure Enrichment’s HUME Sense uses a 3-liter top-fill tank, three mist levels, and a humidity sensor. Those models make more sense for buyers whose needs go beyond the MistAire’s simple two-setting design.
Frequently Asked Questions
How large a room can the Pure Enrichment MistAire humidify?
Pure Enrichment rates the PEHUMIDIF for rooms up to 250 square feet. For substantially larger rooms or open-plan spaces, a higher-output model such as the MistAire XL is a better match.
How long does the MistAire run on one tank?
The rated maximum is up to 25 hours on low and up to 12 hours on high. Actual runtime can vary with the selected setting and operating conditions.
Can I use essential oils or Vicks in the MistAire?
No. Pure Enrichment says its humidifiers are designed for water only and advises against adding essential oils, Vicks, perfumes, or other substances because they can damage the humidifier and cause cracking or leaking.
Do I need distilled water?
Distilled water is not required by Pure Enrichment. It can be useful if you have hard tap water because it may reduce mineral deposits and white mineral dust.
How often should I clean the MistAire?
Rinsing and air-drying between uses helps keep the unit clean. Pure Enrichment also notes that scale removal may be needed weekly or every other week depending on usage and water quality, so follow the manual for the full cleaning procedure.
Does the MistAire have a replaceable filter?
Pure Enrichment sells a compatible decalcification cartridge for the MistAire PEHUMIDIF to reduce mineral buildup and white dust. If you use that cartridge, the manufacturer recommends replacing it every six months for optimal performance.
Is the MistAire suitable for a baby’s room?
Its cool mist, quiet operation, optional night light, and automatic low-water shut-off make it suitable for nursery use when positioned correctly. Keep the humidifier and cord safely out of a child’s reach and follow all manufacturer instructions.
Does it automatically control the room’s humidity level?
No. The MistAire gives you high and low mist settings but does not include a built-in humidity sensor that maintains a selected percentage automatically. Buyers who want automatic humidity control should consider a model with a humidistat or auto mode.
The Bottom Line
The Pure Enrichment MistAire PEHUMIDIF is a solid choice when you want a quiet, uncomplicated cool-mist humidifier for a room up to 250 sq. ft. Its 1.7-liter tank, up to 25-hour low-setting runtime, directional nozzle, automatic shut-off, and 5-year warranty make it easy to recommend for basic bedroom, nursery, or office use.
Skip it if your priorities are top-fill refilling, automatic humidity control, essential-oil use, or larger-room coverage. For buyers comfortable with manual high/low control and regular cleaning, the MistAire remains a practical compact option.
