Pro Breeze 5.6L Ultrasonic Humidifier
(31 reviews)
With a 5.6-litre tank and up to 47 hours of runtime, the Pro Breeze PB-12 focuses on simplicity and a tight price rather than smart features.
Key features
- Tank: 5.6 litres, up to 47h of continuous runtime
- Mist output: 120 to 480ml/h, warm or cool mist
- Noise level: Under 42dB
- XXL tank: up to 47h of runtime without a single refill
In detail: Pro Breeze 5.6L Ultrasonic Humidifier
The Pro Breeze PB-12 is an ultrasonic humidifier built around one simple goal: run as long as possible between refills, without pushing up the price tag. With a 5.6-litre tank, one of the most generous in its price bracket, it can run continuously for up to 47 hours, comfortably more than two full nights without any intervention.
It works on classic ultrasonic technology: a membrane vibrates at high frequency to turn water into fine droplets, then pushed out through a dual nozzle adjustable through 360°. Mist output is adjustable from 120 to 480ml/h, in either cool or warm mist depending on the season. Pro Breeze rates coverage at up to 70m², so a medium to large bedroom or living room is well within reach.
The touch LED display shows current room humidity and lets you set a target between 45 and 75% RH: once that level is reached, the unit automatically stops misting and starts again as soon as humidity drops back down. An auto-off timer adjustable from 1 to 12 hours rounds things out, along with a night mode that switches off every light so it does not disturb sleep. A built-in essential oil tray also lets you lightly scent the room while the air is being humidified.
On the maintenance side, water passes through an ion-exchange resin filter (model PB-12F) that traps some of the minerals and impurities before vaporisation, limiting white residue on furniture. Pro Breeze recommends replacing it roughly every 700 hours or 3 months of regular use. Power draw stays modest, 25W on cool mist, up to 115W on warm mist, for an operation rated under 42dB(A), close to a modern fridge.
The PB-12 does not try to compete with the connected humidifiers in the line-up: no app, no Wi-Fi, no voice control. That is precisely its main selling point, a price noticeably lower than most humidifiers with a comparable tank, for anyone who mainly wants a simple, reliable unit that goes the distance. A sensible pick for an adult bedroom, living room or home office, as long as connectivity is not a deciding factor.
Technical data
Detailed characteristics
Additional information
| Brand | Pro Breeze |
|---|---|
| Model | PB-12 |
| Type | Ultrasonic humidifier |
| Tank capacity | 5.6 litres |
| Runtime | Up to 47 hours continuous |
| Mist output | 120 to 480ml/h, adjustable |
| Mist | Warm or cool, dual 360° adjustable outlet |
| Recommended coverage | Up to 70m² (manufacturer figure) |
| Noise level | Under 42dB(A) |
| Adjustable humidity range | 45 to 75% RH, auto shut-off once the target is reached |
| Timer | Adjustable from 1 to 12 hours |
| Filtration | Ion-exchange resin filter (model PB-12F), replace roughly every 700h/3 months |
| Aroma diffuser | Built-in tray for essential oils |
| Night light | Blue LED, night mode switches off the display |
| Power | 25W on cool mist, up to 115W on warm mist |
| Power supply | 220-240V |
| Dimensions | 25.5 x 18.6 x 33cm |
| Weight | 2.55kg |
| Manufacturer warranty | 1 year (optional 3-year extension) |
Comparison
At around £40 to £80 depending on promotions, the Pro Breeze PB-12 regularly comes up against the Levoit Classic 300S and the Dreo HM713S in searches like "Pro Breeze vs Levoit humidifier": three models with an XXL tank of 5.6 to 6 litres, but very different philosophies. Here is how they compare, based on each manufacturer's published specifications.
| Criterion | Pro Breeze PB-12 | Levoit Classic 300S | Dreo HM713S |
|---|---|---|---|
| Tank | 5.6 litres | 6 litres | 6 litres |
| Runtime | Up to 47h | Up to 60h | Up to 60h |
| Noise level | Under 42dB | Around 30dB | Around 28dB |
| Connectivity | None, local touch display only | Wi-Fi, VeSync app, Alexa and Google Assistant | Wi-Fi, Dreo app, Alexa and Google Assistant |
| Typical price | From £40 at the manufacturer | Around £90 to £100 | Around £90 to £100 |
The Levoit Classic 300S and the Dreo HM713S both lean on connectivity, an app-driven auto mode and a slightly quieter operation. The Pro Breeze PB-12 drops those extras to focus on the essentials, a large tank and reliable warm or cool mist, at a noticeably lower price: the logical pick for anyone who mainly wants a simple, budget-friendly humidifier without worrying about an app.
Related video
Video: ProBreeze Cool/Warm Ultrasonic Humidifier - Published on 14 May 2020
Our tester's verdict: Christophe Delpuech
Christophe Delpuech: I ran the PB-12 for several weeks in a bedroom of about 18m², filling the tank in the evening and never needing to top it up overnight. That is really its number one selling point: the 5.6-litre capacity comfortably covers two full nights, against just one for most humidifiers with a smaller tank. The touch display is easy to get used to, the warm/cool mist toggle is genuinely useful in winter, and the night mode that switches off every light makes a real difference for sleeping. The built-in humidity sensor works reasonably well, not lab-grade precise, but good enough to stop the air from getting oversaturated. Two honest drawbacks: no app or remote control at all, a deliberate trade-off that explains the price, and the ion-exchange resin filter, effective but needing regular replacement to keep the mist clean. For a bedroom or living room where a reliable, self-sufficient unit matters more than an app, the PB-12 remains a solid, budget-friendly pick.
Frequently asked questions: Pro Breeze 5.6L Ultrasonic Humidifier
With a full tank, the PB-12 can run continuously for up to 47 hours depending on the mist output chosen, comfortably more than two nights without needing a refill. With intermittent use, or once room humidity nears the set target, real-world runtime is often even longer.
Yes, it offers both modes, cool mist and warm mist, switched on separately from the touch display. Warm mist runs through a heating element before vaporisation, which draws more power, up to 115W against 25W on cool mist.
Yes, an ion-exchange resin filter (model PB-12F) traps some of the limescale and impurities before vaporisation. Pro Breeze recommends replacing it roughly every 700 hours of use, or about every 3 months with regular running.
No, this model runs on local controls only, via its touch display. It is a deliberate trade-off from the brand to offer a noticeably lower price than connected humidifiers with a comparable tank size.
Pro Breeze rates coverage at up to 70m², roughly a large living room or a main bedroom suite. For a smaller room, the adjustable mist output can also be turned down to make the tank last even longer.
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Page published on 5 August 2026