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 love it I love it. I slept so well the first night I had it on. But, where are all the explanations and guidelines for the functionality of the appliance?

Flashing light at the bottom of the top… Flashing light at the bottom of the top display panel would not turn off. Contacted Sans and rep instructed to hold the flashing light button for 7 seconds. I followed instructions and the light is now solid. Great product 👍🌈

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.

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.