Culligan vs iSpring:Which is searched more?
In September 2026, Culligan had more branded searches than iSpring among iron filter brands worldwide. Culligan was estimated to have 377K branded searches compared to iSpring’s 33.1K, and held an 81.8% Share of Search versus iSpring’s 7.2%. These are worldwide searches for English-language branded terms.
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Which is more popular in search, Culligan or iSpring?
Compare the iron filter brands people buy. Branded searches tell you how often people look for a brand by name or related terms. Comparing these searches across competitors helps you see how popular each brand is over time.
Share of Search by month for Culligan, iSpring. The figures are in the table below the chart.
View monthly share of search table
| Month | Culligan | Pentair | iSpring | Kinetico |
|---|---|---|---|---|
| Oct 2025 | 73.9% | 14.2% | 11.6% | 0.25% |
| Nov 2025 | 72.8% | 14.8% | 12.1% | 0.3% |
| Dec 2025 | 74.1% | 14.1% | 11.5% | 0.35% |
| Jan 2026 | 78% | 13% | 8.7% | 0.26% |
| Feb 2026 | 74.4% | 15.1% | 10.1% | 0.31% |
| Mar 2026 | 75.1% | 14.7% | 9.9% | 0.32% |
| Apr 2026 | 74.7% | 15% | 10% | 0.32% |
| May 2026 | 75% | 16% | 8.7% | 0.26% |
| Jun 2026 | 73% | 16% | 10.7% | 0.34% |
| Jul 2026 | 75.3% | 15.7% | 8.6% | 0.34% |
| Aug 2026 | 76.6% | 16% | 7.2% | 0.26% |
| Sep 2026 | 81.8% | 10.7% | 7.2% | 0.22% |
How has the Culligan and iSpring comparison changed over the last 12 months?
3 findings
- Culligan was ahead of iSpring in every measured month of the 12 months ending September 2026.
- Across the 12 months ending September 2026, Culligan’s estimated Share of Search among iron filter brands worldwide moved from 73.9% to 81.8%, and its estimated monthly branded searches moved from 257K to 377K.
- Across the 12 months ending September 2026, iSpring’s estimated Share of Search among iron filter brands worldwide moved from 11.6% to 7.2%, and its estimated monthly branded searches moved from 40.5K to 33.1K.
How did search popularity change for iron filter brands worldwide in September 2026?
2 changes
In September 2026, Culligan gained estimated Share of Search among iron filter brands worldwide, from 76.6% to 81.8%.
Estimated monthly branded searches for iSpring worldwide fell 18.3% over 12 measured months, from 40.5K to 33.1K in September 2026.
Other head-to-heads among iron filter brands
How each brand is measured
Brandwave collects information about searches that people make online using Culligan’s and iSpring’s names. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brands is growing, holding steady, or fading.
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