Can this set of replacement filters be used for the iSpring US31?

Hi, Yes, these filters are compatible with the unit model US31. For more details, please contact us at (678)261-7611. Regards, iSpring Water Systems, LLC

Is the water supposed to come out foggy and fizzy?

Hi Ann, Yes, for a week or two, the water might come out cloudy due to the trapped air bubbles in the system. In time, these will dissipate and your water will begin to clear up. If you have any questions or need additional assistance, please contact us at support@123filter.com or call us at (678) 261-7611. Thanks, iSpring Water Systems, LLC

Will these cartridges work on an existing Culligan RO system? How will I know? Thanks.

If the size of filter is the same and the end deals are the same then, I think they should work.

Can we use this package for WCC31?

Thanks for the question! You can certainly use this filter pack for the WCC31. We use industry standard filters, so each of the 2.5" x 10" cartridges and filter packs are completely interchangeable with each other.

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iSpringF3 NSF Certified 6-Month Prefilter Replacement Water Filter Cartridge Pack Set for Standard Reverse Osmosis RO Systems

iSpringF3 NSF Certified 6-Month Prefilter Replacement Water Filter Cartridge Pack Set for Standard Reverse Osmosis RO Systems

Product ID: 260717945

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Details

Material
Ro
Product dimensions
6.4D x 6.4W x
Item weight
0.01 Ounces
External testing certification
ANSI
Product benefits
Improves taste

⏳6-month high capacity lifespan

💧3-stage multi-filter system

🔧Easy compatibility with standard RO systems

Description

💧 Elevate your hydration game with crystal-clear confidence!

LONG LASTING PURITY - Enjoy up to 6 months of consistently clean, great-tasting water without frequent replacements.
SEAMLESS RO SYSTEM FIT - Designed to perfectly replace prefilters in most standard reverse osmosis setups for hassle-free installation.
TRIPLE ACTION FILTRATION - Sediment, granular activated carbon, and carbon block filters work in harmony to remove impurities and odors.
TRUSTED NSF CERTIFICATION - Certified to meet rigorous safety and quality standards, so you can drink with confidence.
INDIVIDUALLY WRAPPED CONVENIENCE - Each cartridge is sealed for freshness and easy handling, ensuring peak performance every time.

The iSpring F3 NSF Certified 6-Month Prefilter Replacement Pack includes three individually wrapped 10" x 2.5" cartridges—sediment, granular activated carbon, and carbon block filters—designed for standard reverse osmosis systems. Certified for safety and optimized for a 6-month lifespan, this pack ensures consistently clean, great-tasting water with easy installation and trusted filtration performance.

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