The ideal buyer for the Alen BreatheSmart 45i is someone living in a large home or apartment with significant open-plan areas, like a living room connected to a dining room and kitchen, totaling up to 1900 sq ft. They prioritize comprehensive air purification, especially against smoke, VOCs, and allergens, needing quiet operation for a bedroom setting. This buyer is willing to invest a higher upfront cost for superior coverage (1900 sq ft), a high smoke CADR (1216), and smart features for automatic adjustments, ensuring consistent clean air in expansive spaces.

The Coway 250 is perfect for buyers needing efficient air purification for medium to large rooms, such as a master bedroom, living room, or office, up to 387.5 sq ft (for 5 ACH). This buyer seeks excellent filtration for common allergens, pet dander, and odors, and values a lower initial price point. They appreciate cost-saving features like a washable pre-filter and smart sensors that optimize performance. It's an excellent choice for those wanting strong performance in a specific area without the higher investment required for whole-home coverage.