We are looking to install this in a seasonal cabin, can this be winterized?

Hi Cate, This unit should be protected from direct sunlight or freezing temperature. Depending on the environment in the winter, the housings might become damaged. Please contact us with more details so we can better assist you. iSpring Water Systems 678-261-7611 support@ispringfilter.com

I received this whole house filter and one of the cartridges is broken model fc25b. can i get a replacement of this broken cartridge?

allfilters.com I used iSpring for a while and then the types of filters ordered was so confusing......and its all made in China.......unlike advertised. So I switched to allfilters....now keep in mind that they don’t send one at a time....but the price difference, the nonconfusion, sent by USPS and customer support won me over. ALL MADE IN THE USA! Allfilters also sells the canisters. When ordering filters go by the size ei: 4 1/2” x 20”

Do you still need a water softener with this if hardness is 250 ppm?

Hi there, It's optional but would help p[rolong the life of the filters if you install one. We usually recommend a water softener with TDS higher than 700 PPM. Please let us know if you have other concerns. Stay safe! iSpring Water Systems, LLC

What pressure gauge is recommended to install pre and post filter that will work with 3/4" PEX supply line?

I use the one on a spin down pre filter and a 3/4” shark bite with gauge post filter

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💧 Elevate Your Home’s Water Game — Because Quality Isn’t Optional

SEAMLESS FIT MAXIMUM FLOW - Standard 20" x 4.5" size fits most housings with minimal impact on water flow up to 15 GPM—no compromises on performance.
PURE WATER PURE CONFIDENCE - Removes up to 99% of chlorine, odors, and harmful chemicals for fresh, clean water throughout your home.
PREMIUM COCONUT CARBON BLOCK - High-quality activated carbon ensures superior filtration efficiency and longer filter life, tested to NSF/ANSI standards.
EFFORTLESS MAINTENANCE SUPPORT - Individually wrapped cartridges for freshness plus lifetime free US-based tech support—peace of mind guaranteed.
HEALTHY HYDRATION NO COMPROMISE - Keeps beneficial minerals intact while filtering contaminants, unlike RO systems that strip all dissolved solids.

The iSpring FC25B is a high-performance whole house water filter featuring a 20" x 4.5" CTO carbon block cartridge that removes up to 99% of chlorine, odors, and chemicals. Designed for standard housings, it maintains strong water flow up to 15 GPM and lasts for 20,000 gallons. Made from premium coconut shell activated carbon and independently NSF/ANSI tested, it ensures clean, great-tasting water while preserving healthy minerals. Backed by lifetime US-based tech support and shipped fresh in individual wraps, it’s the smart choice for millennial professionals seeking reliable, hassle-free water filtration.

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