You turn on the tap, fill a glass, and take a sip. But that water might carry chlorine, lead, or PFAS. You want clean, great-tasting water without a complicated setup. That is where Aquasana shines. This guide covers the best Aquasana water filters for every need: under sink, whole house, and shower. Whether you are a first-time buyer or upgrading an old system, we have you covered.
Aquasana is a leader in water filtration, known for its Claryum technology that removes contaminants while retaining healthy minerals. If you are also exploring broader solutions, check out our guide on the best whole house water filter for clean water.
Buying Guide
Filtration Technology: Claryum vs. Carbon Block
Aquasana uses two main technologies: Claryum and carbon block. Claryum is a selective filtration method that removes up to 99% of 78 contaminants including lead, PFAS, and microplastics. It retains beneficial minerals like calcium and magnesium, so your water tastes fresh and supports health. Carbon block filters are effective for chlorine and sediment but may not handle as wide a range of pollutants.
For maximum protection, choose a system with Claryum. If you have well water, see our picks for the best water filter for well water.
Flow Rate and Capacity
Flow rate matters when you are filling a pot or a water bottle. Under sink models like the Aquasana Under Sink Water Filter deliver up to 0.72 gallons per minute, which is much faster than a pitcher. Whole house filters need higher flow to supply multiple outlets. Check the gallon-per-minute rating to match your household size.
Filter lifespan also varies. Most Aquasana under sink filters last 6 months or 800 gallons. Shower filters last up to 6 months or 10,000 gallons. Factor in your water usage to avoid frequent replacements.
Installation and Maintenance
Aquasana designs its filters for easy DIY installation. Under sink models connect directly to the cold water line without a dedicated faucet. Shower filters screw onto the shower arm in minutes. Replacement is simple: twist off the old filter, twist on the new one. No plumber needed. If you have limited under sink space, measure the clearance required (around 15.85 inches for some models).
For whole house systems, consider pre-filtration if you have hard water. A water softener can extend filter life. Learn more in our guide to the best water softener.
Certifications and Standards
Look for WQA certification to NSF/ANSI standards 42, 53, and 401. These verify that the filter reduces chlorine, lead, cysts, and pharmaceuticals. Aquasana filters are certified for up to 99.99% reduction of 78 contaminants. Avoid uncertified filters that may not perform as claimed. If you have specific concerns like PFAS or microplastics, choose a model with those certifications.
Final Thoughts
After reviewing the lineup, we recommend the Aquasana Water Filter for Sink Faucet for most households: it is easy to install, removes a wide range of contaminants, and retains minerals for great taste. For shower filtration, the Aquasana Shower Filter | No Shower Head is a top pick for softer skin and hair, backed by dermatologist recommendations and long filter life. Both deliver certified performance without breaking the bank.
Frequently Asked Questions
How often should I replace my Aquasana water filter?
Most Aquasana under sink filters last 6 months or 800 gallons, whichever comes first. Shower filters last up to 6 months or 10,000 gallons. Replace the filter promptly to maintain contaminant reduction and prevent bacterial buildup. Check the product manual for exact intervals.
Does Aquasana remove PFAS from water?
Yes, many Aquasana filters with Claryum technology are WQA certified to reduce PFOA and PFOS down to 20 parts per trillion. Models like the Aquasana Under Sink Water Filter and the Aquasana AQ-5300+R Genuine Replacement offer this capability. Always verify the certification for your specific model.
Can I install an Aquasana filter on well water?
Yes, but you may need a pre-filter for sediment or iron. Well water often contains particles that can clog the main filter. Aquasana recommends a whole house sediment filter or water softener before the under sink unit. For more details, see our guide on the best water softener for well water.
Will Aquasana filters reduce total dissolved solids (TDS)?
No, Aquasana Claryum filters do not reduce TDS. They are designed to retain healthy minerals like calcium and magnesium while removing harmful contaminants. If you need TDS reduction, consider a reverse osmosis system. Aquasana focuses on selective filtration for better taste and mineral content.
