We stock the highest quality Culligan AC30 compatable filter set replacements. If it has been a year since you have changed your filters, it is time for them to be replaced.
Your reverse osmosis membrane needs changed every three years.
(1) 5 Micron Sediment
(1) Carbon Block filter
(1) Inline GAC cartridge 6" (1/4" Female with 2-3/8" fittings and 2-1/4" Fittings)
All three should be replaced once a year.
Membrane is not included in this set, you change membrane every 3 years