Winix 5300-2 Air Purifier (Grey, 99m² Coverage)

How often do I need to replace the filters?

The HEPA and carbon filters should be replaced annually under normal use. The unit includes indicator lights that alert you when replacement is needed. Heavy use environments or homes with pets may require more frequent changes. The pre-filter can be vacuumed monthly to extend filter life. Replacement filter sets are readily available and include both HEPA and carbon components.

What room size is this air purifier suitable for?

This unit effectively cleans rooms up to 99m² with its 390m³/h CADR rating. It processes the entire room's air approximately every 10 minutes at maximum speed. For optimal performance in larger spaces, position the unit centrally with adequate clearance around all sides. Smaller rooms will benefit from faster air changes and quieter operation.

How loud is the air purifier during normal operation?

Noise levels range from 27dB in sleep mode up to approximately 50dB at maximum speed. Sleep mode is quieter than most libraries, whilst maximum speed is comparable to moderate rainfall. Auto mode typically operates between these levels depending on air quality. The unit automatically reduces speed and noise when air quality improves.

Does this model produce ozone?

No, the PlasmaWave technology does not produce harmful ozone. Independent testing confirms ozone levels remain well below safety thresholds. The technology creates hydroxyl radicals that break down pollutants naturally without generating ozone as a byproduct. This makes it safe for continuous operation in occupied spaces.

Can I control the fan speed manually?

Yes, the unit offers both automatic and manual control modes. Manual mode provides four fan speeds including sleep mode for customised operation. Auto mode uses sensors to adjust speed automatically based on air quality readings. You can switch between modes using the intuitive touch control panel at any time.

What types of pollutants does this remove?

The 4-stage filtration removes dust, pollen, pet dander, smoke, odours, mould spores, bacteria and volatile organic compounds. The HEPA filter captures particles as small as 0.1 microns including PM2.5 pollution. Carbon filtration addresses household odours and chemical vapours. PlasmaWave technology neutralises remaining airborne contaminants.

How do I know when the air quality improves?

The control panel features colour-coded air quality indicators showing red for poor, orange for moderate and blue for good air quality. These readings update continuously based on the internal sensor measurements. The fan speed automatically adjusts accordingly, slowing down as air quality improves and increasing when pollutants are detected.

Is this suitable for people with severe allergies?

Yes, this model is certified by Allergy UK and ECARF (European Centre for Allergy Research Foundation). The HEPA filtration captures 99.999% of common allergens including pollen, dust mites and pet dander. Multiple independent certifications confirm its effectiveness for allergy sufferers. The sealed filtration system prevents pollutants from bypassing the filters.