Deluxe Shower Water Filter (AQ-4100)
The AQ-4100 is a rare dual-stage shower filter that combines KDF-55 copper-zinc media with high-grade coconut shell carbon. It is rigorously tested and certified to NSF/ANSI Standard 177 for the reduction of 90% or more of chlorine in shower water.
Ingredients & Purity
Uses KDF-55 media specifically designed for high-temperature water to neutralize chlorine and inhibit scale/bacteria growth, paired with a specialized carbon stage.
Scientific Evidence
Certified by IAPMO to NSF/ANSI Standard 177. Performance data sheets are publicly available showing consistent chlorine reduction over the 10,000-gallon life.
Brand Transparency
Aquasana provides full performance data sheets and clear installation instructions. They do not make unsubstantiated claims about removing PFAS or Lead at shower flow rates.
Value Assessment
Excellent value at ~$65 for the initial unit, with a cost of roughly $0.005 per gallon. Replacement filters are reasonably priced for the volume of media provided.
Why Not Alternatives?
Unlike many '15-stage' filters found on marketplaces that use cheap fillers like 'magnetic balls,' Aquasana uses a massive volume of actual reactive media. Most competitors fail to use carbon because it is difficult to stabilize in hot water, but Aquasana's patented design manages this effectively.