True HEPA H13 Filter With Advanced 4-Stage Filtration System: 4-stage filtration (Pre-filter, Antibacterial Coating, True HEPA Filter, High-Efficiency Activated Carbon Filter, and Net Filter) can effectively capture 99.97% of particulates as small as 0.3 micros such as allergens, pet odor, hair, dander, smoke, cooking fumes, mold, germs, bacteria and large dust particles. This air purifier can improve indoor air quality, freshen air at home, and help you breathe better. High Efficiency Air Purifier: With a CADR rate of 100 CFM (170 m??/h), this air eliminator can circulate an entire room?€?s air 3 times per hour in spaces up to 240 sq.ft (22m??). Unique size and contemporary design make the RNEPHO air purifier perfectly suited for small or medium sized rooms like living rooms, bedrooms, kitchens, offices, and dorms. Allergy Symptoms Relieved: The asthmatic, pet allergic, allergic to dust mites, coughing, sinusitis, sneezing, chronic allergies and seasonal allergy are greatly relieved when using RENPHO air purifier. Your sleep quality improved almost immediately. 3 Fan Speeds With Sleep Mode and Whisper-Quiet Operation: Choose from low, medium, or high fan speeds according to the air quality. Operates quietly at 26dB during sleep mode so your air is purified while you sleep undisturbed. 3 Timer Options With Night Light: This odor eliminator provides a timer option that allows you to set an auto-off for 2 hours, 4 hours, or 8 hours, helping you save money and energy. There are two light modes: night light and colorful gradient. The light is gentle and dim.