Nuwave OxyPure Zero Air Purifier 47351 (Large Room, 855 Sq Ft)

How often do I need to clean the filters and what's involved?

The stainless steel pre-filters and Bio-Guard filters need cleaning every 3-6 months depending on usage and air quality. The app will notify you when cleaning is due. Simply remove the filters, rinse them under running water, let them dry completely, then reinstall. The entire process takes about 10 minutes and requires no special tools or cleaning products.

What room size can this air purifier effectively handle?

The OxyPure Zero covers up to 855 square feet in one hour. For optimal performance, it cleans a 360 sq ft room three times per hour, a 541 sq ft room twice per hour, or a 1082 sq ft room once per hour. This makes it suitable for most bedrooms, living rooms, offices and open-plan areas in typical UK homes.

How does Bio-Guard technology compare to HEPA filters?

Bio-Guard technology captures 100% of particles down to 0.1 microns, whilst HEPA filters only capture 99.97% of particles down to 0.3 microns. This means Bio-Guard removes particles three times smaller than what HEPA can handle. It effectively captures viruses, bacteria, pollen, dust mites, pet dander, mould spores and harmful chemicals that standard HEPA filters might miss.

Does the WiFi app work reliably and what features does it offer?

The Nuwave Connect app provides remote control, real-time air quality monitoring, fan speed adjustment and filter maintenance alerts. Some users report initial connection difficulties, but using AP mode instead of Easy mode typically resolves pairing issues. Once connected, you can control all functions, set schedules and monitor air quality from anywhere.

How quiet is this air purifier during operation?

The unit operates at just 17dB on the lowest setting, making it virtually silent. In Auto mode, it runs quietly until air quality sensors detect pollution, then the fan increases speed temporarily. Sleep mode dims all lights and maintains whisper-quiet operation. Even at higher speeds, noise levels remain reasonable for most home environments.

What particles and pollutants does this remove from the air?

The Bio-Guard system removes 100% of airborne viruses, bacteria, pollen, dust, pet dander, mould spores, smoke particles and harmful chemicals. It also eliminates odours and reduces ozone levels. The stainless steel pre-filter captures larger particles above 50 microns, whilst the Bio-Guard filters handle everything down to 0.1 microns including ultrafine particles.

Is assembly required and how easy is setup?

No assembly is required - the unit comes ready to use straight from the box. Simply remove the packaging, plug it in and it's operational. The included components are 2 stainless steel pre-filters, 2 Bio-Guard filters and 1 Bio-Guard 360 filter. WiFi setup through the app takes a few minutes, though some users find AP mode more reliable than Easy mode.

What certifications does this air purifier have for safety and efficiency?

The OxyPure Zero holds multiple certifications including Energy Star for efficiency, CARB (California Air Resources Board) for ozone safety, CE marking for European standards and ETL certification for electrical safety. It's also ClimatePartner certified, meaning its carbon emissions have been measured, reduced and offset throughout the product lifecycle.