Filterbaby All-Metal Shower Filter Pro vs Weddell Duo WD-100
Filterbaby All-Metal Shower Filter Pro
The short answer
Weddell Duo WD-100 comes out ahead overall with 8.1/10 against 6.2/10 for the Filterbaby All-Metal Shower Filter Pro. Filterbaby All-Metal Shower Filter Pro is stronger on flow & spray experience and build quality & durability. Weddell Duo WD-100 is stronger on verified filtration performance, filter life & running cost, install & maintenance, health & materials and value. At current verified prices, the Weddell Duo WD-100 costs about $46.02 less.
- Choose the Filterbaby All-Metal Shower Filter Pro if: Buyers who specifically want a metal housing and strong water pressure, and accept that it isn't certified.
- Choose the Weddell Duo WD-100 if: Anyone who wants the most proven chlorine removal and is keeping their showerhead. Also works ahead of a handheld or diverter.
Scores by criterion
| Criterion | Filterbaby All-Metal Shower Filter Pro | Weddell Duo WD-100 |
|---|---|---|
| Verified filtration performance | 6.086% chlorine reduction in one lab test. Not certified, with inconsistent THM results. | 9.4On NSF's 177 list, plus 100% chlorine and full DBP removal in WFG's lab test. Best in the pool. |
| Flow & spray experience | 8.0Kept 94% of flow, the best retention among the picks. | 6.01.42 gpm measured (82% of baseline). Works with any showerhead or handheld. |
| Filter life & running cost | 4.53-month cartridge. Refill price not confirmed. | 8.5$29.99 cartridge set every 5–6 months, about $60–72 a year. |
| Install & maintenance | 5.5Large unit that hangs below the head. Restocking and label fees on returns. | 6.5Tool-free inline install. Loses points for the 10% restocking fee and no returns on opened cartridges. |
| Health & materials | 7.0Metal housing. No lead-free certification. | 8.5NSF lead-free marker. Plastic housing. Carbon block rather than KDF, so no zinc leaching. |
| Build quality & durability | 7.5Rated most durable, but only by one tester. | 7.0Solid but bulky plastic housing. |
| Value | 5.0$139 for mid-level, single-source filtration evidence. | 8.5Lab-leading results for $90 plus low refill costs. |
Specifications
| Spec | Filterbaby All-Metal Shower Filter Pro | Weddell Duo WD-100 |
|---|---|---|
| Type | Inline filter (uses existing showerhead) | Inline filter (uses existing showerhead) |
| Certified to NSF/ANSI 177 (chlorine) | — | Yes |
| Lead-free certified (NSF/ANSI 372) | — | Yes |
| Filter media | Pleated microfilter + activated carbon | Sediment prefilter + activated carbon block |
| Rated cartridge capacity | — | 10,000 gallons |
| Recommended cartridge life | 3 months | 6 months |
| Measured chlorine reduction (WaterFilterGuru) | 86 % | 100 % |
| Rated flow | — | 2 gpm |
| Measured flow (WaterFilterGuru) | 1.63 gpm | 1.42 gpm |
| Replacement cartridge price | — | 29.99 USD |
| Housing material | Titanium-aluminum alloy (metal) | Plastic |
Filterbaby All-Metal Shower Filter Pro
Pros
- Metal housing instead of plastic
- Kept 94% of flow in testing
- Cut chlorine 86%
- Rated most durable build by WaterFilterGuru
Cons
- Not NSF-listed
- Inconsistent THM results; totals rose in one test
- 3-month cartridges, with running cost higher than the leaders
- Large unit that hangs low; restrictive return terms
A niche pick for the metal-housing and pressure-focused. The evidence is thin, so buy it knowing it isn't certified.
Full Filterbaby All-Metal Shower Filter Pro review →Weddell Duo WD-100
Pros
- NSF/ANSI 177 listed with a lead-free marker
- Removed 100% of chlorine and detected byproducts in WaterFilterGuru's test
- Low yearly cartridge cost
- Works with your existing head, handheld or diverter
- Recommended by multiple independent reviewers
Cons
- Slowest flow among WaterFilterGuru's top filters, at 82% of baseline
- Bulky horizontal shape
- Does not reduce chloramine or hardness
- 30-day returns carry a 10% restocking fee, and opened cartridges can't be returned
The most proven chlorine remover we found, with low running costs. Accept the bulk and slower flow, and it is the filter to buy.
Full Weddell Duo WD-100 review →Both products are part of our guide The Best Shower Filters of 2026, where you can see every pick, how we score and current prices from each retailer.