Bosch Air 4000 Air Purifier (White, 50cm x 29.1cm x 29.1cm)

How often do I need to replace the filter?

Filter replacement depends on usage and air quality conditions but typically ranges from 6-12 months. The built-in filter change indicator constantly monitors filter condition and displays alerts when replacement is needed. Heavy use in polluted environments may require more frequent changes, whilst cleaner conditions extend filter life. The system ensures you're always notified before performance degrades.

What size room can the Air 4000 effectively clean?

The Air 4000 effectively purifies rooms up to 62.5m² with its 300 m³/h clean air delivery rate. This covers most living rooms, bedrooms and medium-sized open-plan areas. The smart sensor technology adjusts performance based on room size and current air quality, ensuring consistent cleaning regardless of space configuration.

How loud is the Air 4000 during normal operation?

Normal operation produces 25-49 dB(A) depending on fan speed settings. Quiet mode operates at just 25 dB(A), which is quieter than a whisper and suitable for bedrooms. Auto mode adjusts noise levels based on air quality requirements, balancing cleaning performance with acoustic comfort throughout the day.

Does the Air 4000 remove pet odours and allergens?

Yes, the three-layer filter system specifically targets pet-related pollutants. The pre-filter captures pet hair and larger dander particles. The HEPA layer removes microscopic allergens that trigger reactions. The activated carbon filter eliminates pet odours from litter boxes, bedding and general pet smells, making homes more comfortable for allergy sufferers.

Can I control the Air 4000 remotely or with voice commands?

The Air 4000 uses a 6-button LED touchscreen for direct control without app connectivity or voice control features. This ensures reliable operation without dependence on Wi-Fi networks or smartphone apps. The intuitive interface provides immediate access to all functions including auto mode, quiet mode, timer settings and child lock features.

What pollutants does the HEPA filter remove?

The HEPA filter layer captures 99% of particles including pollen, dust mites, bacteria, viruses and fine particulate matter down to 0.3 microns. This includes common allergens like tree and grass pollen, household dust and airborne pathogens. The filter meets strict HEPA standards for medical-grade air cleaning performance.

How do I know when the air quality improves?

The LED ring around the unit changes colour to indicate current air quality in real-time. Blue indicates excellent air quality, purple shows good conditions, orange represents moderate quality and red signals poor air quality. This visual feedback system lets you see immediate improvements as the purifier works and understand your indoor environment quality.

Is the Air 4000 energy efficient for continuous operation?

The Air 4000 uses efficient motor technology and smart sensors to minimise energy consumption. Auto mode reduces power usage when air quality is good and increases performance only when needed. The compact design and optimised airflow patterns ensure maximum cleaning efficiency per watt consumed, making it suitable for 24/7 operation without excessive electricity costs.