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iSpring F3-PF Water Filter Replacement Pack for US31-PF and CW31-PF

$48.99
$48.99 $48.99
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In stock · Ships within 1–2 business days

iSpring F3-PF
$48.99
iSpring F3-PF Water Filter Replacement Pack for US31-PF and CW31-PFiSpring F3-PF

Features

Product Description
iSpring F3-PF, 3 pieces, water filter replacement pack for US31-PF and CW31-PF.
  • AvailabilityIn Stock
  • Model F3-PF
  • Manufacturer iSpring
  • Product Dimensions 2.5"L x 2.5"W x 10.0"H
  • Product Weight 1.5 LB

Manuals

2.5x10 General Filters Manual.pdf Download

iSpring vs Other Brands

Feature
NSF/ANSI 58 Certification
Yes (full system certified)
Often partial or none
Verified performance & safety
Filtration Stages
Clear 3/4/5/7 stage options
Usually 4-5 stages
More complete options
Alkaline Remineralization
Available (RCC7AK/RCC7AK-UV)
Rare or expensive add-on
Better taste & pH balance
See-through 1st Stage Housing
Yes, smart flow sensor
Unavailable in most systems
Easy visual inspection
Daily Production
75 GPD (reliable output)
Often lower or overstated
Reliable daily production
Replacement Filters
Widely available & affordable
Hard or harder to find
Lower long-term cost
Installation
DIY friendly, no plumber needed
Can be more complex
Faster & easier set-up
Support & Warranty
Responsive support + solid warranty
Varies widely
Better post-purchase experience
Value for Money
High performance at competitive price
Higher price for similar specs
Better cost-effectiveness

Reviews

  • 5 stars: 3 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
A
Anonymous
Awesome!

Best water filtration system on the market! I wish I got it sooner. The filters are easy to replace.

A
Anonymous
Tasty Water

I have had an iSpring under sink filter for a number of years and am super happy with the clean taste of my drinking water. Well Done!

A
Anonymous
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Support

How to install