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.

Very pleased with the quietness of the 511i Max and with its comprehensive app functionality. I wanted a quiet air purifier (my previous Vax was too loud) and did plenty of research before buying. It is delightfully quiet! Hard to hear at all on night mode and on speed 1, audible on speed 2 but sounds like a pleasant breeze rather than the annoying hairdryer-like sound some fans make. Even speed 3, whilst much louder, is not terribly annoying. And the excellent app gives a fully adjustable slider to control the fan speed, not just three settings, so you can effectively set fan speed to 2¼ or 2½ to better control the noise. The app's schedule feature is also excellent, allowing full control over the times and days the purifier will automatically turn on and off, and the mode/speed it will use when it does. The purifier looks very smart and minimalist too, though changing the filter will be more awkward than some air purifiers due to the fabric cover. Overall, really pleased with it and would happily buy again.

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.

Amazing machine, good looking, lightweight and easily moved from room to room if necessary. Totally silent unless it’s filtering a bad air environment, then the fan really turns on. We tried it near the kitchen when searing a hamburger and it registered bad air quality, even though nothing was burning, just normal browning and the hood was on. The same when changing the bedsheets and duvet covers after 1 week. It must register dust etc. We are interested to see what happens during pollen season. We are definitely less congested when waking up every morning. We run it all night on the night setting.

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 .

Pas mal du tout. Piloté à distance de mon smartphone androïd. Silencieux même à régime moyen. Pas insupportable au maxi. Mode auto. On peut réduire l'éclarage la nuit. Et l'appli fournit un rapport graphique du niveau de pollution. Esthétique. Pas encore trouvé de points négatifs. Si j'avais su, j'ai par le passé acheté 2 appareils marque fellowes qui ont brulé