2-in1 DEHUMIDIFIER & AIR PURIFIER - Removing up to 14 L of water per day, but enhances your living environment further with a medical grade H13 HEPA filter for cleansing air; keeping it fresh and clear of nanoparticles such as dust, dander, pollen and other allergens. WHISPER QUIET - The result of 5 years of development, the MeacoDry Arete One Low Power Dehumidifier 25L is our quietest, most energy efficient model yet. With a gentle hum at only 40dB sound level, this model is twice as quiet as the industry standard.