Fresh Your Home - High Efficiency HEPA Air Filter This H13 HEPA filter air purifiers cleans off 99.97% of airborne contaminants, reduces and absorbs those via true HEPA filter. AMEIFU air purifiers for home suitable for large rooms up to 1640 sq ft, perfect for quickly cleaning a wide range of contaminants including pet dander, smoke, and bad smells in a certain space. No Annoyed Noise - Ensure your Sleep Air Purifiers for bedroom runs at very low noise level (15d B) on the lowest speed and the sleep mode, the quiet HEPA air purifier cleans the air without noise pollution. You can run it all night long without disturbing your sleep. Put one in your child's bedroom, they'll hardly notice it is there, enable you and your family to enjoy the fresh and clean air in sweet dream.