Simply stated, we believe the QuietPure HEPA air purifier is quieter, cleans more air and is easier to use than other leading brands. Intelligent monitoring of actual particle count, from particle count to relative humidity and even temperature. The QuietPure Home HEPA air purifier quietly and quickly reacts to changes in your air quality, ensuring your home or office is always a healthy sanctuary. Removes dust, allergens, pet dander, mold spores, viruses, smoke, odors and from particle count to relative humidity. Authorized QuietPure dealer. Fast, Free Shipping.