Actively cleans air circulation in bedrooms, living areas, and commercial environments while protecting air conditioning units from dust accumulation. Upgrades indoor air with a 3 piece compatible air conditioning filter set featuring silver ion technology that eliminates 98% of PM2.5 particles and inhibits microbial growth for up to 6 months. Engineered with nonwoven fabric, these filters combine heat resistance with a durable design and effortless installation that requires no tools. Suitable for households, office buildings, and retail stores seeking enhanced air purification in spaces using air conditioning systems. Use scenarios Home environment: install in bedrooms and living areas to reduce PM2.5 and protect HVAC components from dust buildup, improving overall air quality. Office spaces: use in small to medium workplaces to maintain cleaner air for employees while minimizing dust accumulation in the HVAC system. Retail stores: apply in store HVAC to sustain higher air purity for customers and staff in environments with regular air conditioning use.