Levoit Core Mini Air Purifier

I purchased this for my mums bedroom. She suffers from COPD/Emphysema and after doing investigation in to what will help alleviate her symptoms, one of them being an air purifier - this was my choice. It works great, easy to set up, has 3 settings. It is left on the middle setting while she sleeps. I accidentally turned it to 1 (super quiet) and she woke quite breathless one night. She realised she couldn’t hear its usual hum (it is not overly loud - great white noise) and turned it back to the middle setting which immediately brought her relief. Recently did a filter change (filters are very reasonably priced) - lots of dust in the filter. Highly recommend this unit for small spaces. It has allowed my mum to be more comfortable- which of course is my number 1 requirement.