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Premium Salt-Free Water Filter Replacements for Home and Business
(18 products)Welcome to Cascadian Water, your trusted provider of high-quality salt-free water filters. Our filters are not only perfect for residential use, but also for commercial applications like offices and restaurants.
Finding Your Replacement Filter
To find your replacement filter's part number, simply add a 'K' to the end of your system's part number. For example, if your system's part number is ICS-SP, the corresponding replacement filter's part number would be ICS-SPK. Look at the label on your treatment system to find both part numbers.
Why Replace Your Filters?
Over the lifespan of your residential salt-free water treatment system, replacing filters is essential to maintain optimum performance and results. We recommend switching out your salt-free water filters every year. If you notice any performance issues earlier, it may be time for a replacement.
Our Filter Performance
Our filter replacements are top-tier but don't just take our word for it. Check out these verified reviews that highlight the effectiveness of our filters.
The Cascadian Water Difference
Cascadian Water has been a leader in the water treatment industry for over 30 years. Our commitment to quality and customer satisfaction has earned us over 5000 happy customers. Don't just take our word for it – check out our customer testimonials for real-world experiences with our products.
Save Time and Money With Our Subscription Service
To save you time, money, and hassle, we've added a Subscribe and Save 10% option for all of our replacement filter cartridges. Want to know more? Click here to learn about our subscription service.
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We're here to guide you in your water journey, in the easiest and best way possible.
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ICS-CTP35K Replacement Water Filter for ICS-CTP35 System
$47520Unit price /Unavailable -
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Explore All Cascadian Water Treatment Products
Experience the difference with Cascadian Water Filters. Our advanced yet simple systems—including whole-home filters, salt-free softeners, and UV disinfection units—deliver clean, refreshing water for your home, business, or property.
Not sure what you need? Use our interactive guide below to get matched with the perfect filter or conditioner for your water concerns.
Every Cascadian system is easy to install with clear instructions and minimal maintenance. Whether you're a DIYer or working with a plumber, our filters are designed for hassle-free setup.
Need a replacement water filter? You'll find the right fit here—just match your cartridge code or use the guide above.
Trusted by families, businesses, and installers across the Northwest and beyond, Cascadian systems deliver proven performance backed by expertise.
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