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And while it’s noisy when maxed out – peaking at over 53dB – it’s much more easy-going at lower speeds, just 31dB on the first few settings. Key specs – CADR: 187m³/h; Max room size: 80m²; Power settings: 3; Dimensions (HWD): 22 x 22 x 36cm; Weight: 3.We use the best possible technology and materials for protecting the environment taking account of economic considerations. A purifier with a score of 250 for dust particles is as effective as adding 250 cubic feet of clean air per minute. First, it’s a smart purifier, connecting to the same HomeWizard Climate app as the smart heaters, fans and dehumidifiers in the Princess range.

Understandably, there has been a lot of talk over recent years about whether HEPA air purifiers offer any protection against viruses, including Covid-19. It’s a well-designed unit in white, with a softly glowing blue nightlight ringing the circumference, just below the touch-sensitive control panel. If the humidity level in the room is very high, condensation may develop on the particle sensor and the air quality light may indicate a poorer air quality even though the air quality is good. Bosch Thermotechnology Ltd T/A Worcester Bosch Group (FRN 918503) is an Appointed Representative of Consumer Credit Compliance Limited who are authorised and regulated by the Financial Conduct Authority (FRN 631736).At full tilt, it’s as noisy as most rival air purifiers, but in its sleep mode you’d struggle to hear it above ambient sound levels – we measured the output at just 31dBA. The appliance is designed for use in residential indoor applications, under normal operating conditions. Bosch Thermotechnology Ltd, Registered Office Address- Cotswold Way, Warndon, Worcester, WR4 9SW Company registration number in England 1993294. The permissions of Consumer Credit Compliance Limited as a Principal firm allow Bosch Thermotechnology Ltd T/A Worcester Bosch Group to undertake credit broking.