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Aquasana AS-DW-CT-W Replacement for Aquasana AQ-4000


Retail: $123.99 /ea
You Save: 15%
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Retail: $123.99
You Save: 15%
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The Aquasana AS-DW-CT-W Replacement for Aquasana AQ-4000 features selective Claryum Filtration that reduces 77 contaminants while retaining beneficial minerals for optimal hydration. This Aquasana Countertop Water Filter System uses a dual filtration system that includes activated carbon that reduces organic chemicals like herbicides, pesticides, VOCs and MTBE. It also features catalytic carbon that targets chlorine and chloramines. The dual filtration also features Ion-Exchange that filters heavy metals like lead and mercury, and the Absolute Sub-Micron Mechanical Filtration captures asbestos and chlorine resistant cysts like cryptosporidium and giardia. Designed with a brilliant white-colored filter housing, this Aquasana Countertop Water Filter System is NSF Certified and is easy to install, replace and maintain.

Note: Not for use with faucets that feature a pullout sprayer


  • Brand: Aquasana
  • Part Number: AS-DW-CT-W
  • Replaces Part Number: AQ-4000
  • Color: White
  • Filter Media: Activated carbon, catalytic carbon
  • Filter Life: 6 months or 450 gallons
  • Flow Rate: 0.5 GPM
  • Pressure Rating: 20-80 psi
  • Temperature Rating: 40-90° F

Included Items:

  • Faucet diverter valve
  • Hose assembly
  • Threaded cartridge caps
  • O-rings
  • A and B filter cartridge (pre-installed)
  • Brass faucet adapters and washers


The following are replacement parts for the Aquasana AS-DW-CT-W Replacement for Aquasana AQ-4000:


Customer Reviews:

Total Reviews: 4 | Average Rating: 4.8 / 5.0


I almost forgot the good taste of drinking water. The installation of the filtration system was an excellent investment.

Collected by
Brenda Poston-Schaeffer2008-11-24

The filtration process is exactly what I needed to filter out unhealthy metals. I find the filtered WATER pleasantly refreshing and actually a major improvement in taste compared to town's water. I appreciate the quality of water and the price at which I bought the filter.

Collected by

filter is good product, I bought this product two yrs ago. but I got a problem recently, I moved to a new house, but I cannot hoook up my filter with faucet. I went to Homedepot and tried to find out adaptor, but simply cannot. so pls help me out cos I need purified water!!!!!!!!!!!thanks~~

Collected by

I've never tasted better water. Not even from your most expensive glass-bottled waters. It actually has a sweet flavor which is delicious. From all of my research on filtration systems Aquasana takes the cake across the board. I trust the company name and the service rep was really easy to speak with.

Collected by

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