Shark NeverChange5 Air Purifier MAX HP300UK (White)

How long does the HEPA filter actually last and what affects its lifespan?

The HEPA filter is designed to last up to 5 years based on testing to GB/T18801-2015 standards. This assumes 12 hours daily operation on maximum fan speed in a 28 sqm room. Real-world lifespan depends on air quality, usage patterns and room size. Homes with pets, smokers or high pollution may see shorter filter life, whilst cleaner environments could extend it beyond 5 years. The unit monitors filter condition and will alert you when replacement is needed.

What room sizes work best with this air purifier?

The HP300UK covers up to 130 sqm with one complete air change per hour, suitable for large living areas or open-plan spaces. For bedrooms or smaller rooms around 28 sqm, it provides 4.8 air changes per hour - ideal for people with allergies or respiratory issues who need more intensive air cleaning. Medium-sized rooms of 50-70 sqm get excellent coverage with 2-3 air changes hourly.

How does Clean Sense IQ technology work and is it accurate?

Clean Sense IQ uses built-in sensors to detect airborne particles and automatically adjusts fan speed accordingly. When air quality drops due to cooking, pets or external pollution, the system increases cleaning power. As air improves, it reduces to energy-saving levels. The LED display shows real-time air quality from poor to excellent. Users report it responds quickly to changes like opening windows or cooking activities.

Is the Anti-Odour Technology cartridge necessary for operation?

No, the odour cartridge is completely optional. The air purifier functions perfectly without it, focusing purely on particle filtration. The cartridge adds odour neutralisation and releases a subtle fresh scent, but some users prefer not to use it if they're sensitive to fragrances or want purely filtered air. You can install or remove it at any time without affecting the HEPA filtration performance.

How noisy is this air purifier during different operating modes?

On auto mode and lower manual settings, the HP300UK operates almost silently - quiet enough for bedroom use without disturbing sleep. When air quality drops and the unit ramps up to higher speeds, it becomes more audible but remains at conversational levels. Maximum speed produces the most noise but is still quieter than many competing models. The auto mode intelligently balances cleaning power with noise levels.

What maintenance does this air purifier require?

Maintenance is minimal thanks to the long-lasting HEPA filter. The DebrisDefence pre-filter should be cleaned monthly by vacuuming or brushing away dust and debris - this extends the main filter's life. The exterior can be wiped with a damp cloth. The odour cartridge (if used) will need periodic replacement, though Shark doesn't specify exact intervals. No other regular maintenance is required during the 5-year filter lifespan.

Can this air purifier help with specific allergies and pet dander?

Yes, the certified HEPA filter captures 99.97% of particles including common allergens like pollen, dust mites, pet dander and mould spores. Users with hay fever report noticeable symptom improvement, particularly morning congestion. The 4-layer filtration system is specifically designed to trap microscopic allergens that trigger reactions. For pet owners, it effectively reduces airborne dander and helps control pet-related odours when combined with the odour cartridge.

Does this model connect to smartphone apps or have smart home integration?

No, the HP300UK doesn't offer app connectivity or smart home integration. All controls are managed through the touch-sensitive panel on top of the unit, including power, fan speed, auto mode and display dimming. Whilst some users miss remote control capability, the Clean Sense IQ auto mode handles most adjustments automatically, reducing the need for manual intervention throughout the day.