It is quiet and energy efficient It is quiet and energy efficient. There is no noticible rise in my electric bill. I keep it on auto, 24/7, and that is perfect for me. I have allergies and the sneezing is significantly reduced from several times a day to just two or three. Living in a split level home had me questioning if it would work well, but it fulfills it's duty to clean the air. Love it!

I've left an earlier review and as an… I've left an earlier review and as an additional piece of information, buyers need to be aware that they need to save the box and all packaging if they want to return the Sans for a refund. I was confident after reading so many glowing reviews and I didn't save the packaging. I'm out of luck. Additionally, the company has deleted my Facebook review. I'm very suspicious of the 5 Star reviews on their site.

Nice, quiet unit I have not had the product long but so far I like it. It’s incredibly quiet and I believe I notice a difference in the air quality. I like the variable fan speed and auto options. I did not rate 5 stars because I am disappointed that I can not replace the UV-C bulb. From my understanding, UV-C is only effective for a limited number of hours. I was told by their customer service that the bulb would last 7 years. Is that 7 years of continuous use? How many hours before the efficacy wanes?

I received my Sans air purifier and… I received my Sans air purifier and have used it non stop for five days. I can honestly say that with each day the quality of air gets better. I believe over time the air quality will continue to improve.only I really need another purifier because I move mine from room to room. I have not turned it off since I received it. It’s truly a great product so far. I wanted to wait longer before I reviewed, but I feel better already. I breathe better!! I had questions and the owner reached out immediately. It doesn’t get any better than that. It’s definitely not a product that requires a lot of reading to make it work but occasionally questions need to be answered. So with it all said, a great product and outstanding customer service, I’m looking forward to improving my quality of air.

Poor customer service I have been on hold for customer service for 28 minutes and then hung up. On the talk icon on the website I have waited for 30 minutes after entering my question and then disconnected.