Blueair DustMagnet 5240i (Grey, 22cm x 22cm x 43.3cm)

How does DustMagnet technology actually work to capture dust?

DustMagnet technology uses two air intake points that create a unique vortex airflow pattern in the room. This draws dust particles towards the unit before they can settle on surfaces. A stream of negatively charged particles clusters the airborne dust, making particles larger and easier to capture. Once inside the purifier, these clustered particles stick to the positively charged stainless steel pre-filters like a magnet, preventing them from recirculating back into the room.

What room sizes can the 5240i effectively clean and how often?

The 5240i is designed for rooms between 20-48m². In a 20m² room, it provides approximately 4.8 air changes per hour on the highest speed, completely filtering the air every 12.5 minutes. For larger 48m² spaces, it completes one full air change every 30 minutes. This makes it ideal for bedrooms, home offices, dining rooms and small living spaces where consistent air quality is important.

How quiet is this air purifier during normal operation?

The 5240i operates at just 23dB on the lowest speed setting, which is quieter than a whisper and barely audible in most environments. Even on the highest speed, noise levels remain at 45dB - quieter than normal conversation. This ultra-quiet operation makes it suitable for bedrooms, nurseries and offices where noise disturbance must be minimised whilst maintaining effective air purification.

What smart features are included and how do they work?

The unit includes WiFi connectivity for full app control, allowing you to monitor air quality, adjust settings and receive filter replacement notifications remotely. It's compatible with Amazon Alexa and Google Assistant for voice control. Auto mode uses built-in particle sensors to automatically adjust fan speed based on real-time air quality - speeding up when pollution increases (cooking, vacuuming) and returning to quiet operation when air clears.

How long do the filters last and what maintenance is required?

The combination particle and carbon filters last up to 12 months with 24/7 use, though actual lifespan depends on pollution levels in your environment. The stainless steel pre-filters are permanent and washable - simply vacuum or wipe clean weekly. The unit monitors filter life in real-time and sends app notifications when replacement is needed, with one-touch ordering available through the app.

Can this unit really function as furniture whilst purifying air?

Yes, the dual-use design features a sturdy top surface that functions as an end table for lamps, books, decorative items or drinks. The Scandinavian-style aesthetic with premium light-grey textile finish and vegan leather details is designed to complement modern home décor. Unlike traditional air purifiers that need hiding, this unit is meant to be prominently placed where it's most effective whilst serving as functional furniture.

What certifications and testing has this air purifier undergone?

The 5240i is AHAM Verified for Clean Air Delivery Rate with independently tested CADR ratings of 232 m³/h for smoke, 238 m³/h for pollen and 226 m³/h for dust. It's ENERGY STAR certified for energy efficiency and tested by California EPA Air Resources Board (CARB) for safe ozone emissions. The HEPASilent technology is certified to remove 99.97% of particles down to 0.1 microns.

How much electricity does this air purifier consume compared to other appliances?

Power consumption ranges from just 4 watts on the lowest setting to 22 watts on maximum speed - significantly less than a typical 40-watt LED light bulb. This energy-efficient operation means you can run it continuously without substantially impacting electricity bills. The ENERGY STAR certification confirms it meets strict energy efficiency guidelines whilst delivering superior air cleaning performance compared to conventional HEPA systems.