Normally I have some kinda technical AC question, but this time it's kinda simple and for my own benefit. I have a Trion Air bear filter on my air handler at home. It takes a 20 X 24.25 X 5 filter. The filters are about $30 each. I was thinking about trying to get a permanent filter that I can just clean out with water and re-use. Are these type of filters worth the money? Do they work as well? Does anyone know a good website to order such a large filter of this type through? Thanks for the help.