Originally Posted by Greg Heath
What works really really well for me is using White Household Vinegar. Not diluted. Just straight and a microfiber cloth. Cleans filters like Awesome. Crystal clear.
I use Vinegar as well.. gets rid of any hard water deposits. Then I finish up with 100% alcohol or naptha. -that takes care of any oil residue.
Go not to the elves for counsel, for they will say both yes and no.