I am extremely pleased with my purchase of the Air Purifier with Sterilization mode. Even in such a short space of time I can honestly say that my Air Purifier is making a definite difference to air quality in my house. Living in an older house can come with various challenges and i am confident that this product will help improve the air quality. Thank you Julie @ Lively Living for taking the time to take my phone call and have a chat about how the Air Purifier could help my personal situation. Such great innovation and technology and best of all no filters to be replaced. A super quiet unit with auto shut off. I decided to team this product up with a Aroma-Oil waterless diffuser which helps with long lasting fragrance throughout the various rooms of the house. Would highly recommend.