I purchased this product in 2017. Having asthma and living with three cats that I am allergic to I decided it would be wise to spend the extra money on this item. Plus I liked the idea of a lifetime warranty. I have loved this product.
In 2020 my unit stopped operating and I contacted the company. While the assistant was unable to locate the warranty information that I submitted at the time of purchase she didn't miss a beat and arranged for a replacement. It arrived in a timely manner. Couldn't have been easier.
I highly recommend this company.