
Before using this air filter, I used a 3M anti-allergic filter (which was very good) and a 80% cheaper particulate filter, which was normal. In comparison, this filter offers the best air quality. After the first day of use I was very satisfied and impressed. That may sound commercial, but it's true. When I breathe in my house now, it's like a breath of fresh air from a remote wooded area that we visit a few times a year. Cool, refreshing & energizing. It really relieves breathing in my house and even makes it better than my already fine office work environment (i.e. not just my house, although there are some issues we are working to fix). My wife's answer: much less dramatic and says she sees a little difference. At the same time, I'm more sensitive to moisture, mold and mildew smells than they are. And I have allergies to mold and dust mites. , just buy them and forget about spending money on standalone room filters. although they are still good for cleaning chemical odors in a given room. although homemade filters will probably still be better. Maybe I just need to sell mine and keep using these! βΊ I've only been using them for a week so I can't confirm how they're holding up. 16x25x1 also fit perfectly.

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