I recently got this air purifier several days ago and I couldn't be happier! It is perfect for my room, which is around 500 ft. This air purifier and a built-in humidifier is a gamer changer for those looking to care for their air. With natural ingredients, just non-iodized salt and water, this machine not only effectively destroys viruses but also reduces household odors and increses humidity. Overall, I highly recommend this air purifier and humidifier to anyone looking for a powerful and effective solution for a healthier living environment.