Application‑based segmentation of the Smart Air Purifiers market reveals distinct demand drivers across end‑use environments. Residential installations account for the largest proportion, estimated at 45 % of total revenue, reflecting widespread consumer awareness of indoor‑air quality and the integration of IoT controls within home automation ecosystems. Commercial premises—offices, retail, and hospitality—contribute approximately 30 %, where regulatory ventilation standards and employee health considerations justify higher‑specification units. Industrial sites, representing 15 % of the market, prioritize robust particulate and gaseous filtration to comply with occupational safety regulations, especially in manufacturing and chemical processing plants. Healthcare facilities, though a smaller slice at 7 %, demand stringent microbial reduction, driving adoption of UV‑C and HEPA hybrids that meet hospital‑grade certifications. Automotive applications comprise the remaining 3 %, primarily in premium electric‑vehicle cabins where cabin‑air quality is marketed as a differentiator. This application‑focused market taxonomy aligns each segment’s proportional contribution with its functional requirements, providing a clear framework for forecasting growth within the Smart Air Purifiers segmentation.