Review on WEB Eco Filter Replacement Year by Ryan Dot

I have been using these filters on 2 air conditioners for 5 years with no problems. I change them every two years, which isn't really necessary, but it's my decision. I wash them once a month during the chilly season. There are no instructions, but common sense dictates that the green part should face the front of the air conditioner, as with the intake air. I use these filters not only in my air conditioners, but also on my desktop PC for dust protection. And in my air purifier as a pre-filter to protect an expensive overpriced HEPA filter.