Blue 511i Max Smart WiFi Air Purifier, HEPASilent Dual Filtration Up To 43m², Whisper Quiet, Air Cleaner for Pets, Allergies, Virus, Dust, Mould, Smoke

Easily one of my best purchases of 2025. After using it for a short time, it genuinely makes you wonder how you ever lived without an air purifier. The air quality improvement is noticeable, especially in a bedroom environment. The room feels fresher and less stuffy, and it has helped significantly with dust and general air cleanliness. The app functionality is excellent, simple to set up, responsive, and useful for monitoring air quality and adjusting settings remotely. The unit itself is fairly large, but this clearly comes down to the size of the filter, which inspires confidence rather than being a negative. It feels well built and designed to handle larger rooms properly rather than being underpowered. Noise levels are impressively low. Even when running continuously overnight, it is quiet enough not to disturb sleep, which was a major deciding factor for me. Overall, a very effective, well designed air purifier that delivers exactly what it promises. Highly recommended for anyone considering improving their indoor air quality.

Works perfectly fine. Connectivity from app to air purifier could be improved. Makes the air feel cleaner. Has helped with morning allergies. App includes useful information such as when the filter needs changing. Not very loud on fan 1 and 2 but is quite noisy on fan 3. I have found the schedule feature helpful.

Seems ok, and phone app is useful. I've been using this for approx one month now and the phone app connected to this device is super useful to check on the current 'air quality' level as well as viewing how much of the filter is 'left' until it is recommended to be changed. My air quality is generally good or excellent on most days, and there is still (after one full month, 90% left) of my filter for use. So, it isn't working hard and you can probably get 10 months or 12 (if you push it) per year with each filter. Operationally, usage is very quiet, which is solid plus.

It appears to work as per all the claims. I put it in the main bedroom because the house is 1900’s with a wooden floor and I was convinced that dust was coming up from the floor. The unit quickly told me that the air quality was great and there were no issues. The only time it moves to mid speed is when sorting laundry or changing the bed (cotton lint dust) so I know it works. The app is a good way to visualise the use and auto mode takes care of things. I’ve struggled to get the top indicator lights to dim completely at night which is a pain - and I’m kinda disappointed that it finds little issue in the room so I’m not really benefiting from the unit.

Brilliant air purifier, only had it for a short amount of time but it works very efficiently. Very easy to set up and easy to use. The app is great too.

I bought this to see if it would help with issues with my eyes and ears. It has more than met any expectations I had. It is easy to set up, quiet on the auto mode and the night mode is so quiet you can hardly hear it - the first night I had it on I though we had left the window open since the air was so clear. I will probably end up buying another one so I don’t need to move it around the house.

Terrible. I am a nail technician and hoped this would help with the small particles of dust that float in the air when removing product. It's hasn't helped in anyway at all.

511i max is great! Can use alongside the app to see what the air quality is & how the filter is lasting. Quiet, can hear it kick in when aq changes. Does blow slightly cool air but as expected! Pleased with product.

Great product in my opinion and brand too. The improvement in air quality is immediately noticeable, especially in the bedroom. The room feels fresher, less stuffy, and there’s a clear reduction in dust. The app is easy to set up, responsive, and useful for monitoring air quality and adjusting settings remotely. One can schedule times to turn on and off. It also has different modes, to select to your preference manually or via the app. Although the unit is slightly large, but fit to handle the type of room size effectively. Noise levels are impressively low, even when running on sleep mode, and it doesn’t disturb your sleep. Overall, it's a good brand, well-designed, highly effective air purifier that delivers exactly what it promises. Highly recommended.

Molto bello Funziona molto bene Si connette ad Alexa per controllarlo Ha un sistema per attivarlo automaticamente al ritorno e viceversa Silenzioso Comoda la spia per la qualità dell’aria Prodotto eccellente

Very quiet in sleeping mode .

I’m extremely satisfied with this air purifier in every aspect. The biggest advantage for me is how quiet it is — even in Auto mode it is practically inaudible, and at night it does not disturb sleep at all. This was my top priority, and this model delivers perfectly. Air quality improves very quickly. According to the built-in sensor and the app, PM2.5 drops to near zero and stays there consistently. I placed it in a large living area, and it easily keeps the air clean not only in that room but also helps adjacent rooms when doors are open and air is circulating. The design is clean and modern, it doesn’t look like a typical appliance and fits nicely into the interior. Setup was simple, the app connection was fast, and the automatic mode works exactly as expected — it adjusts only when needed and otherwise stays very quiet. Filters are easy to replace, and maintenance is basically “replace and forget,” which is exactly what I wanted. If you care about low noise, strong performance, and stable automatic operation, this is an excellent choice. Highly recommended, especially for people sensitive to noise or with allergies.

ottimo prodotto, economico silezioso e fa il suo dovere. il sensore rileva subito presenza di fumo o aria sporca. ottimo!