I purchased two of these for our apartment during wildfires to help reduce the smoke smell in our apartment. My family has issues with severe allergies to seasonal and household allergens so we hoped they would also help mitigate allergy and asthma symptoms. They were delivered within 24 hours of purchase in packaging that ensured they would not get damaged in transit. Once out of the box, they were very easy to assemble and put to work.We put one in the living room and one in the back bedroom. Most days only one is necessary on the lowest setting. The medium setting eliminates any odours in the apartment, including the recent wildfire smoke. The machine is much quieter than I expected it to be. On medium quieter than our tabletop fans. On the low setting silent. We don't hear it at all, which is ideal for sleeping.The sleep setting works a charm, and it's really handy that there are three different timer settings. The night light function is very subtle, so it probably won't keep you awake at night unless you're a very light sleeper. We don't notice it at all when it's on, and it's right next to the bed. If the light does bother you there's a button to press that shuts off all the lights the machine has so you can have it running in a fully dark room.The filter is super easy to install and remove and well-priced when it comes time to replace it.I'll admit I was a bit skeptical when I first made the purchase, but I really shouldn't have been. We couldn't be happier with the Airtok and highly recommend it to anyone looking for an efficient, quiet air purifier for a small to medium-sized room or apartment.I would recommend reading the product information and specs before purchase as it is very accurate and helpful when deciding which one will fit your needs.