Lots of difficulty connecting by Bluetooth, greatly reducing the utility. Use two filters in my system. For the same time period, the larger one claimed depletion while the smaller one claimed 34% left, but the smaller one was much dirtier. Both filters had irregular spacing of the folds, something which was not usual for the "dumb" filters. Don't know if this was a feature or a defect. Would classify this produce as potentially desirable, but more trouble than it is worth.

I buy this one every time . My wife has allergies and this product helps her.

I'm pretty satisfied with this filter, although I really need to change it every month. There is no way I could extend it to 3 months.

I just purchased this filter. We have purchase this kind before. There wasn't any problems. Instructions to install and does an excellent job.

[This review was collected as part of a promotion.] I love the clean air it gives & how it catches dust