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Large room air purifiers effectively clean spaces from 50-150 square metres through powerful motors and optimised airflow design. These units feature higher Clean Air Delivery Rates (CADR) exceeding 400 cubic metres per hour. Multi-directional airflow ensures complete room coverage without creating dead zones. Most models include variable speed settings to balance noise levels with cleaning performance. Large capacity filters handle increased air volumes whilst maintaining efficiency. Smart sensors adjust operation based on room size detection and occupancy patterns for optimal coverage in open-plan living areas, master bedrooms, and commercial spaces.