Review on Holmes AER1 Total Filter HAPF30AT by Simon Connelly

Bought these filters to replace two I already had which of course got dirty after a few months of use. Although Revain claims they may not be compatible with my device (Holmes HAP9225B Air Purifier), I read several reviews that they are compatible, so I felt pretty comfortable buying the two I needed. As far as I can tell they work and fit perfectly. My only complaint is their price. Given their small size (about the size of a large book) and the fact that I had to buy two for my device, at around $20 each, I would have preferred them if they were a little cheaper. But at least you won't have to replace them for a few months, that's all.