Berkey vs KDF:Which is more popular by branded search?
In August 2026, Berkey and KDF were level on Share of Search among shower filter brands worldwide, with an estimated 22.2K branded searches each, at 2.5% estimated Share of Search each. These are worldwide searches for English-language branded terms.
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Which is more popular in search, Berkey or KDF?
Compare the shower 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 Berkey, KDF. The figures are in the table below the chart.
View monthly share of search table
| Month | Sprite | Berkey | KDF | AquaBliss | Vitaclean | Jonathan Product |
|---|---|---|---|---|---|---|
| Oct 2025 | 91.6% | 3% | 4.5% | 0.73% | 0.14% | <0.01% |
| Nov 2025 | 90.8% | 4.5% | 3.7% | 0.89% | 0.17% | <0.01% |
| Dec 2025 | 92.4% | 3.7% | 3% | 0.74% | 0.14% | <0.01% |
| Jan 2026 | 92.2% | 3.7% | 3% | 0.9% | 0.14% | <0.01% |
| Feb 2026 | 90.8% | 3.7% | 4.5% | 0.89% | 0.15% | <0.01% |
| Mar 2026 | 92.2% | 3.7% | 3% | 0.9% | 0.12% | <0.01% |
| Apr 2026 | 93% | 3.1% | 3.1% | 0.75% | 0.14% | <0.01% |
| May 2026 | 93% | 3.1% | 3.1% | 0.75% | 0.14% | <0.01% |
| Jun 2026 | 93.5% | 3.1% | 2.5% | 0.75% | 0.14% | <0.01% |
| Jul 2026 | 93.5% | 3.1% | 2.5% | 0.75% | 0.12% | <0.01% |
| Aug 2026 | 94.2% | 2.5% | 2.5% | 0.62% | 0.11% | <0.01% |
| Sep 2026 | — | — | — | — | — | — |
How has the Berkey and KDF comparison changed over the last 12 months?
3 findings
- The lead changed hands 3 times in the 11 months ending August 2026: Berkey took it in November 2025, KDF took it in February 2026, Berkey took it in March 2026.
- Across the 11 months ending August 2026, Berkey’s estimated Share of Search among shower filter brands worldwide moved from 3% to 2.5%, and its estimated monthly branded searches held steady at 22.2K.
- Across the 11 months ending August 2026, KDF’s estimated Share of Search among shower filter brands worldwide moved from 4.5% to 2.5%, and its estimated monthly branded searches moved from 33.1K to 22.2K.
How did search popularity change for shower filter brands worldwide in August 2026?
2 changes
In August 2026, Berkey lost estimated Share of Search among shower filter brands worldwide, from 3.1% to 2.5%.
Estimated monthly branded searches for KDF worldwide fell 32.9% over 11 measured months, from 33.1K to 22.2K in August 2026.
How each brand is measured
Brandwave collects information about searches that people make online using Berkey’s and KDF’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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