Product FAQs

If you have a question that is not answered below that pertains either to water or an Aquasana product, email us at info@aquasana.com.

For water-specific questions, check our Water FAQs.

Question: How do I remove the A-cartridge from the AQ-4000 if it is stuck?
Answer: Because it is very important that the A-cartridge not be bypassed by the untreated water, the AQ-4000 forces a strong seal on the A-cartridge. If you are having difficulties removing your A-cartridge, all you need to do is fold up a towel on your kitchen counter, and with the A-cap removed, give the filter a light tap on the counter, and the cartridge should jump right out. If this does not work for you, please call our tech support at (877) FDA-PURE.

Question: If I'm the only one using the filter, can I wait 12 months to change the cartridges?
Answer: The AQ-4000 is certified to treat 500 gallons, which means that we had to prove the performance through 1000 gallons to give you a built-in safety window. Even a family of 6 is unlikely to use a full 1000 gallons in a six-month period. Carbon is the building block of life, and will allow bacteria to colonize on its surface as soon as it gets wet. Unlike the AQ-4100 and EQ-300, which use KDF-55 (55% copper, 45% zinc), the AQ-4000 does not contain anything to inhibit bacteria growth. Some companies use silver to prevent bacteria build-up, but recent studies have shown that silver has similar health effects to lead. Silver collects in the left testicle or the left ovary and can cause hypertension, brain damage, and other negative health effects. Companies that use silver in their cartridges must register their products with the FDA as a pesticide. Because there is nothing toxic in our cartridges to prevent bacteria growth, the AQ-4000 will reach detectable levels of heterotrophic bacteria after 7-8 months, and dangerous levels after 12-14 months. To prevent bacteria build-up, the AQ-4000's cartridges should be changed every 6 months, regardless of use. The KDF-55 used in the AQ-4100 and the EQ-300 prevents them from growing bacteria, so a single person using the AQ-4100 Pure Shower System can go a full year between cartridge replacements, and the Rhino EQ-300 can be used until your water bill shows that you've used over 300,000 gallons.

For specific data on Aquasana Products, go to "About Aquasana."

 Additional Information
 » Product Comparisons
 » Healthy Water Alternatives
Recommended Products:
Shower Filter

List Price: $84.99
Your Price: $54.99

View Product Details

Countertop Water Filter - White

List Price: $114.27
Your Price: $79.99

View Product Details

2-Stage Under Counter Water Filter - Brushed Nickel

List Price: $199.99
Your Price: $139.99

View Product Details

Rhino® Whole House Water Filter

List Price: $999.99
Your Price: $699.99

View Product Details

CUSTOMER SERVICE

Mon-Fri 8am-8pm CDT
866-NO-BOTTLE
866-662-6885
Aquasana makes the Inc 500
drinking water filters certified by NSF
award winning Aquasana water filters
Aquasana 90 day satisfaction guarantee
find Aquasana on facebook
follow Aquasana on twitter
Aquasana's photostream on flickr
Aquasana's YouTube channel
Download our press kit
Click here to download the PDF
Aquasana Press Kit
All about Water for Life
Click here for more information
Aquasana Water for Life auto-ship replacement program