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Head-to-head · Best Whole-House Water Filters

Culligan WH-HS-400 Whole House Water Filtration System vs iSpring WGB32B 3-Stage Whole House Water Filtration System

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

The short answer

Culligan WH-HS-400 Whole House Water Filtration System and iSpring WGB32B 3-Stage Whole House Water Filtration System score essentially the same (4.5 vs 4.5). Pick the one whose trade-offs match your priorities — the strengths and watch-outs below are where they actually differ.

Culligan WH-HS-400 Whole House Water Filtration System
Ranked #1 in Best Whole-House Water Filters
Culligan WH-HS-400 Whole House Water Filtration System
$46.44as of Jul 8

Culligan's WH-HS-400 Whole House Water Filtration System delivers advanced filtration with smart features and strong contaminant reduction, particularly excelling at PFAS removal. Reviews highlight its effectiveness in addressing well water issues like iron and sediment, with users praising the Culligan Connect App for remote monitoring and service alerts. While some users note the system's higher cost and installation complexity, many report significant improvements in water quality throughout their homes. This system is ideal for households seeking comprehensive whole-house filtration but may not suit those on tight budgets or with simple water concerns.

Strengths
  • — Reduces over 90 contaminants including 99% PFAS reduction with Total Defense filter
  • — Smart HE filtration technology with Culligan Connect App for remote monitoring
  • — Effective at tackling common well and municipal water problems like iron, sediment, and chlorine
Watch-outs
  • — Installation requires professional setup and may involve plumbing modifications
  • — Higher upfront cost compared to basic carbon filtration systems
$46.44 · Check Price on AmazonFull review →
iSpring WGB32B 3-Stage Whole House Water Filtration System
Ranked #2 in Best Whole-House Water Filters
iSpring WGB32B 3-Stage Whole House Water Filtration System
$758as of Jul 8

The iSpring WGB32B is a 3-stage whole house water filtration system designed for city water users seeking to reduce chlorine, sediment, and odors without sacrificing flow rate. Reviewers noted its ability to maintain consistent 15 GPM output while effectively filtering up to 100,000 gallons per filter cycle. Quality Water Lab rated it 4.5/5, praising its ease of DIY installation and maintenance. However, it's not recommended for well water applications or homes with heavy metal issues. The system is best suited for households looking for a budget-friendly, low-maintenance solution that improves taste and clarity without removing beneficial minerals.

Strengths
  • — Reduces up to 99% chlorine, sediment, rust, tastes, and odors
  • — Maintains steady water flow rate up to 15 GPM with minimal pressure loss
  • — 3-stage filtration system with NSF/ANSI compliant sediment and carbon block filters
Watch-outs
  • — Not suitable for well water or heavy metal contamination
  • — Sediment filter may clog faster in older homes with rusty plumbing
$758 · Check Price on AmazonFull review →

How they stack up

Culligan WH-HS-400 Whole House Water Filtration System

The Culligan WH-HS-400 stands out with its Total Defense filter and Culligan Connect App, features not found in the iSpring WGB32B or APEC ESSENCE systems, though it comes with a higher price tag and professional installation requirement compared to more budget-friendly options like the Pentek or Waterdrop WHS-1000.

iSpring WGB32B 3-Stage Whole House Water Filtration System

The iSpring WGB32B stands out for its consistent 15 GPM flow rate and minimal pressure loss, features not matched by the Pentek or Aquasure systems, and it's more affordable than the Culligan WH-HS-400. However, unlike the Home Master TMHFC, it doesn't offer mineral-infused water or the 1:1 water waste ratio, and it's not suitable for well water applications.

Specs side-by-side

SpecCulligan WH-HS-400 Whole House Water Filtration SystemiSpring WGB32B 3-Stage Whole House Water Filtration System
Filter TypeCarbon-basedSediment + Carbon Block
Contaminant ReductionOver 90 contaminantsSediment, Taste, Odor, and up to 99% Chlorine
System TypeWhole houseSediment + Carbon Block
Capacity16,000 gal100,000 gal
Stages4-Stage3-Stage
CertificationsNSF/ANSI 372, 42, CSA B483.1NSF/ANSI standards
MaterialStainless SteelSediment, Carbon Block
Flow Rate—15 GPM
Connection Size—1" NPT
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