I bought my house last year and have been using the filters that the previous owner had, but I've come to wonder if really they are any good and/or if there is something better that I should be using.
My house is 43 years old and I have a bi-energy furnance/heat pump. The filter unit on the furnace was at one time a Honeywell electrostatic filter, but the electrostatic filters themselves have long since been thrown away, and the only thing remaining is the unpowered "box/cabinet" which is installed in the duct work. The main stack is 20x20, and the honeywell box extends that a little to roughly 20x22.
Currently, there is an 20x20x1 AAF Internation ElectroKlean filter installed (http://www.aafintl.com/Products/Repl...ctroKlean.aspx). The good thing about it is that it is reusable. I'm wondering if that's the only good thing about it though.
I realize that it isn't a HEPA filter, but I'm fine with that. I'm not convinced that putting a HEPA filter on a 43 year old HVAC system would really do a whole lot.
Is this filter any good? Are there better things out there to use instead? The big box stores sell the simple paper ones for 3-5$/ea. Are those better than something like this?
My knowledge of HVAC filters is fairly limited at best.
Thanks for any insight, tips and knowledge that you can share!