Household Indoor Fresh Air System with Variable Frequency Conversion
High-efficiency variable frequency motor ensures ultra-quiet operation (below 25dB) while reducing energy consumption by 30%. Precision-engineered ABS housing with corrosion-resistant coating enhances durability in humid environments. Multi-stage HEPA filtration system captures 99.97% of PM2.5 particles, ideal for urban areas with heavy haze or allergy-prone households. Smart humidity and CO₂ sensors auto-adjust airflow (50-350 m³/h) for optimal indoor air quality. Modular duct design allows flexible installation in apartments, offices, or basements. German-designed fan blades with aerodynamic optimization minimize turbulence for consistent airflow. Integrated no-alarm technology prevents false triggering of smoke detectors during high-speed operation. Washable pre-filter extends main filter lifespan up to 12 months. Direct factory pricing with bulk order discounts available. Global shipping with 2-year warranty on motor and 1-year on electronic components.