Overview
- COMPUTER BILD reports lab-verified results for the Bosch Air 4000 that are good but below top rivals on fine particles, clearing about 93% at 0.1–0.3 micrometers while still meeting ECARF allergy criteria.
- The purifier draws only 16.14 watts at full speed, yet its lowest setting measured 1.151 sone, which can remain audible for light sleepers.
- Bosch omits app control and smart-home links, so users set modes and timers on the device instead of by phone.
- Home&smart finds the ECOVACS DEEBOT X9 PRO OMNI excels at deep cleaning with 16,600 Pa suction and an OZMO Roller mop system, though it handles only 2 cm thresholds.
- The Roborock Saros 10R earns 95/100 for a 7.98 cm low profile, 3.5 cm threshold climbs and 22 mm mop lift, while PC-WELT flags Amazon deals on midrange models such as the Roborock Q7 L5+ at €189.99.