Where is a good reasonable place with quick shipping to get R.O replacement filters? I have a culligan ac-30 R.O. system. Culligan wants $85 for the membrane filter and $15 each for the others.
Why not just Google Culligan ac-30 RO? It will take you about 30 seconds to find 20 different locations to purchase Culligan compatible parts for your equipment.
Here's a link:
Here is a link that might be useful: Culligan RO filters