Unicel 5CH-352 Spa Filter Cartridge – Coleman & Freeflow Replacement
Keep Your Spa Water Crystal Clear
When it comes to hot tub and spa maintenance, nothing matters more than clean, safe, and balanced water. The Unicel 5CH-352 Spa Filter Cartridge delivers premium filtration that keeps your spa water crystal clear while protecting your equipment from dirt, oils, and debris. Designed as a direct replacement cartridge for several popular spa brands, including Coleman and Freeflow, this filter offers OEM-level quality you can trust.
If your spa water is cloudy, foamy, or harder to balance, an old filter may be to blame. Replacing it with the Unicel 5CH-352 restores proper water flow, extends the life of your pump and heater, and ensures your spa remains a clean, relaxing environment.
Why Choose Unicel Spa Filters?
Unicel is an industry leader in pool and spa filtration, manufacturing cartridges that meet or exceed OEM specifications. Compared to generic brands, the Unicel 5CH-352 offers:
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High Dirt-Holding Capacity – Pleated polyester media traps oils, lotions, and fine debris.
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Longer Service Life – Built with durable end caps and reinforced cores.
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Exact Fit – Replaces OEM filters without leaks or performance loss.
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Reusable Design – Washable with regular rinsing to extend cartridge life.
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Consistent Clarity – Provides superior water quality for a better spa experience.
With Unicel, you get filtration performance that keeps up with daily spa use.
Compatibility and Dimensions
The Unicel 5CH-352 is designed to fit a range of hot tubs and spas, including models from:
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Coleman Spas
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Freeflow Spas
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Other compatible spa brands that use the same dimensions
Filter Specifications:
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Diameter: 5 5/16"
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Length: 9 1/4"
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Top: Closed with molded cone handle
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Bottom: 1 1/2" SAE thread
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Media: Pleated polyester
Always measure your existing filter before purchase to confirm compatibility.
Signs It’s Time to Replace Your Spa Filter
Even with regular cleaning, spa filters eventually lose effectiveness. Replace your 5CH-352 cartridge if you notice:
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Cloudy or foamy water despite correct chemical balance
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Reduced water flow from jets or pump strain
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Visible fraying, cracking, or collapsing pleats
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Difficulty keeping chlorine or bromine levels stable
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Filter more than 12–18 months old
Installing a fresh Unicel filter ensures your spa stays clean, clear, and inviting.
Easy Installation and Maintenance
Replacing your spa filter is one of the easiest maintenance tasks you can perform:
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Turn off your spa pump.
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Remove the old filter cartridge from its housing.
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Insert the new Unicel 5CH-352, ensuring a snug fit.
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Restart your system and check for proper flow.
To extend filter life, rinse with a garden hose every 2–4 weeks, rotating pleats to flush out trapped debris. For best results, soak the filter in a cartridge cleaner solution periodically to remove oils and residue.
Built for Durability and Long-Term Use
The Unicel 5CH-352 is engineered to withstand demanding spa environments:
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Chemical Resistant – Handles daily exposure to chlorine, bromine, and spa chemicals.
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Heat Resistant – Performs reliably in hot water circulation.
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UV Resistant – Prevents breakdown for spas installed outdoors.
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Heavy-Duty Core – Reinforced design resists collapse under pressure.
With Unicel, you can enjoy fewer replacements and dependable performance season after season.
Protect Your Spa Investment
Dirty or clogged filters don’t just affect water clarity—they can cause serious equipment damage. By installing the Unicel 5CH-352, you’ll:
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Reduce stress on pumps and heaters
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Prevent premature equipment wear
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Improve water circulation and chemical distribution
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Lower long-term maintenance costs
A small investment in a premium filter can save hundreds on spa repairs and replacements.
Key Features of the Unicel 5CH-352 Filter Cartridge
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OEM-quality replacement for Coleman, Freeflow, and other spas
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Premium pleated polyester traps fine debris, oils, and dirt
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Washable and reusable with regular maintenance
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Reinforced end caps and center core for durability
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Dimensions: 5 5/16" diameter × 9 1/4" length
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Closed top with molded cone handle, 1 1/2" SAE threaded bottom
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Provides clean, clear water and reliable system performance
FAQ – Unicel 5CH-352 Spa Filter
Q: How often should I replace my spa filter?
A: Most spa filters last 12–18 months with proper cleaning. Heavy spa usage may require more frequent replacement.
Q: Can I clean and reuse this filter?
A: Yes. Rinse every few weeks and use a filter cleaner to extend its lifespan. However, all filters eventually need replacement.
Q: Will this filter fit any Coleman spa?
A: It fits Coleman models that use filter 5CH-352. Always confirm dimensions before purchasing.
Q: What makes Unicel better than generic filters?
A: Unicel uses higher-quality materials, tighter manufacturing standards, and reinforced construction for longer service life and better performance.
Q: Is this filter safe for use with bromine or chlorine?
A: Yes. The Unicel 5CH-352 is resistant to common spa sanitizers.
