Reverse Osmosis Systems
Culligan RO Replacement Filters
Find filters and manuals by selecting your Culligan system below
Trusted by homeowners and businesses worldwide, Culligan is a leader in the water treatment industry. We offer premium Culligan-compatible reverse osmosis water filters and membranes that fit perfectly into your Culligan under-sink RO system. The reverse osmosis water filters effectively trap chlorine, chloramines, organic contaminants, heavy metals, and assorted impurities to greatly improve the taste and odor of your drinking water. Some filters require a "conversion kit" (see details below).
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Culligan RO Frequently Asked Questions
How much do Culligan water filters cost?
Culligan propriety water filters can be very expensive. We offer compatible high-quality filters, RO membranes, cartridges, and lamps that cost much less but provide that same clean, great-tasting drinking water you'd expect. By installing Culligan-compatible reverse osmosis filter replacements and taking care of routine system maintenance yourself, you can save quite a bit of money.
How do I order replacement filters for my Culligan drinking water filtration system?
Start by clicking on the photo of your Culligan system above. From there, you can add the needed filters to your cart. In some cases, you can save time by ordering all of the needed filters in one "filter kit" (not available for all Culligan models). Keep in mind that the RO membrane usually only needs to be replaced every two years, while the sediment and carbon filters are replaced every 6-12 months depending on water usage and water quality.
Will these compatible filters work directly with my Culligan RO filtration system?
Some filters will work directly with your Culligan reverse osmosis system and others will require a "conversion kit" be installed first (such as the Culligan Aqua-Clear model). A retrofit kit allows you to keep using your current Culligan tank and faucet, but by installing a new manifold (component that holds the filters), you're able to use less expensive Culligan-compatible filters going forward. Our customer support team is happy to answer any questions you might have about this process. 877-377-9876 Mon-Friday, 8 am to 5 pm CT. Learn how to convert your Culligan system so non-proprietary filters can be used.
What contaminants will these Culligan-compatible filters remove?
Culligan-compatible reverse osmosis filters and membrane can remove common pollutants from water including pesticides, sulfates, fluoride, nitrates, lead, pharmaceuticals, arsenic and more. The RO system's carbon filter will also remove chloramines and chlorine.
Learn more about what contaminants can be removed with reverse osmosis filtration.
Answers To Your Most Common Questions
Is Your Reverse Osmosis Water Flow Slow?
Is the water coming out of your RO faucet slower than you think it should be? Here are six reasons for slow water flow from your reverse osmosis drinking water system.
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Do I Need a Whole House Reverse Osmosis System?
If you like the water produced by your reverse osmosis drinking water system at your kitchen tap, wouldn’t it make sense to have RO water throughout the home? The answer may surprise you.