Culligan HSH-C135
Score: 85/100
Weddell Duo
Score: 88/100Rankings

The Weddell Duo is a premium, NSF-certified shower filter that offers verified chlorine reduction and a high flow rate of 2.8 GPM. Its dual-cartridge design enhances performance and prevents clogging, making it a reliable choice for health-conscious users. While it carries a higher price tag, its clinical testing and visible filter monitoring justify the investment for those prioritizing water quality.
The Culligan HSH-C135 is a hand-held filtered showerhead with 5 spray settings and NSF/ANSI 177 certification for reliable chlorine and scale reduction. It features a stainless steel hose and anti-clog nozzles but is limited to a 1.8 GPM flow rate. Best for users prioritizing certified filtration and massage functionality.
| Attribute | Culligan HSH-C135 | ![]() |
|---|---|---|
1.8 GPM | 2.8 GPMbest | |
1 | 2best | |
6 months | 8,000 monthsbest | |
10,000 gallonsbest | 8,000 gallons | |
5best | — | |
5 yearsbest | — | |
| ↓ lower better | 14 inches | 8.66 inchesbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | Culligan HSH-C135 | ![]() |
|---|---|---|
Performance & Filtration(2) | ||
Flow Rate (GPM) | 1.8 GPM | 2.8 GPM |
Filtration Stages | 1 | 2 |
Compatibility & Installation(3) | ||
Shower Compatibility | Standard 1/2 inch | Standard (Rain, Fixed, Handheld) |
Connection Size | 1/2 inch | Standard |
Installation Type | Tool-Free | Tool-free |
Features & Usability(1) | ||
Spray Settings | 5 | null |
Maintenance & Warranty(4) | ||
Filter Lifespan (months) | 6 months | 8000 months |
Certifications | NSF/ANSI 177, IAPMO R&T | NSF/ANSI 177, NSF/ANSI/CAN 372, IAMPO verified |
Filter Capacity (gallons) | 10000 gallons | 8000 gallons |
Warranty Length (years) | 5 years | null years |
Build & Design(2) | ||
Housing Material | Chrome | Plastic/Carbon |
Overall Length (inches) | 14.0 inches | 8.66 inches |

Products in the top-left offer the best value (high score, low price).
The search results do not include specific expert reviews or detailed consumer feedback. One source lists a 4.6-star rating, but no individual review excerpts, common praise, or recurring complaints are provided in the available information.
The search results do not include specific expert reviews or detailed consumer feedback. One source lists a 4.6-star rating, but no individual review excerpts, common praise, or recurring complaints are provided in the available information.

Professional reviewers praise the Weddell Duo for superior contaminant removal and 100% chlorine reduction in lab tests. Experts highlight the dual-cartridge design for preventing clogging but caution that PFAS and particulate reductions rely on independent verification rather than official NSF certification.
Users appreciate the dermatologist approval and clinically tested benefits for skin and scalp health. Many report noticeable improvements in water quality, with some noting that the filter makes water softener-treated water feel even softer.
“made my water softener treated water even softer”
