Triple SMART Under Sink Water Filter System - Under Sink Water Filters - Crystal Quest Double SMART Under Sink Water Filter System - Under Sink Water Filters - Crystal Quest Single SMART Under Sink Water Filter System - Under Sink Water Filters - Crystal Quest
Triple SMART Under Sink Water Filter System - Under Sink Water Filters - Crystal Quest

SMART Under Sink Water Filter System

5 reviews |



Our SMART Under Sink Water Filter System reduces or removes contaminants such as chlorine & heavy metals from tap water to offer the freshest taste to you. The perfect solution for any household, this water filter system is quick and easy to install and use, attractive, and convenient.

This solid state water filter uses the latest technologies that blend the adsorption capabilities of coconut shell activated carbon with Eagle Redox Alloy® and more.

  • Installs neatly under the sink.
  • Comes with a beautiful faucet and all necessary installation hardware.
  • Conveniently provides 10,000 gallons of water (1-3 years, or when the flow of water will automatically either stop or slow down greatly.)
  • Great for homes, apartments or office use.

When considering installation, if current under sink plumbing is hard copper tubing the saddle valve would be used; for flex tubing, the T-valve would be required. While ordering a prompt will require that an installation valve is specified in order to progress through the order entry screen.

Which cartridges are in my system?

Single Double Triple
SMART Filter Yes Yes Yes
Carbon Block Filter No Yes Yes
Sediment Filter No No Yes

SMART Water Filter Cartridge

Water flows through a bed of media made of a special high-purity alloy blend of two dissimilar metals - copper and zinc (ERA-6500, ERA-9500). ERA-6500 and ERA-9500 are major advancements in water treatment technology that works on the electrochemical and spontaneous-oxidation-reduction (Eagle Redox Alloy®) principles. Chlorine is instantaneously and almost inexhaustibly oxidized.

Water flows through ion exchange resins, reducing heavy metals such as lead, copper, aluminum, and water hardness.

Water flows through granulated activated carbon (GAC). GAC is universally recognized and widely used as an effective adsorbent for a wide variety of organic contaminants, such as chlorine (99.9%), chemicals linked to cancer (THM's, benzene) pesticides, herbicides, insecticides, volatile organic compounds (VOC's), PCB's, MTBE's and hundreds of other chemical contaminants that may be present in water causing bad taste and odors in your drinking water.

All Crystal Quest® GAC is a mixed blend of coconut shell and catalytic GAC to address both chlorine, chloramines and these byproducts. 

Carbon Block Water Filter Cartridge

Water travels through a 5-micron solid carbon cartridge for removing volatile organic carbon compounds (VOC's), insecticides, pesticides and industrial solvents and traps particles larger than 5 microns including sediment, silt, sand, and dirt.

Sediment Water Filter Cartridge

Water travels through a sediment filter cartridge that removes sediment, silt, sand, and dirt. This also helps to extend the life of the water filter system.


Single 5"L x 14"H x 5"W
Double 10"L x 14"H x 5"W
Triple 15"L x 14"H x 5"W

Operating Specs

Connection Size 1/4"
Min Operating Pressure 20 psi (pounds per sq. in.)
Max Operating Pressure 60 psi (pounds per sq. in.)
Min Operating Temperature 40° F
Max Operating Temperature 90° F
Max Flow Rate 0.5 gpm (gallons per minute)

Replacement Cartridges

Product Name SKU
SMART Filter Cartridge (2-7/8“x9-3/4”) CQE-RC-04002
Carbon Block Filter Cartridge (2-7/8“x9-3/4”) CQE-RC-04000
Sediment Filter Cartridge (2-7/8“x9-3/4”) CQE-RC-04001

Product Manual

Undersink Manual.pdf

*A Leak Detector Smart Valve should be purchased/installed to prevent unknown water line conditions such as high water pressure, lack of pressure regulator, water spiking or hammering, or negligent installation.

Customer Reviews
4.6 Based on 5 Reviews
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Filter Reviews:
  • drinking water
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  • water
  • filter unit
  • times
  • someone
  • water taste
  • Christina Jinks
  • phase cartridge
  • undersink system problem
Steven H.
United States United States
Second system...

We moved and installed a new under sink 3 filter unit with water leak shutoff valve. The new system installed even easier that the first one with the compression fittings. The ice maker kit worked great. Water tastes great and am happy to not have to purchase bottled water anymore. Especially during these uncertain times.

Crystal Quest SMART Under Sink Water Filter System Review
United States United States
Helpful Customer Service

Christina Jinks is awesome. She had a lot of patience dealing with my undersink system problem. Came thru with flying colors and what she sent was better than I expected. Will be very easy to change my old 3 canister system for the new 2 canister system. Decided I didn't need 3 canister after all, because I didn't need the all carbon canister when I also had a 6 phase cartridge that contained carbon and did filtered more things. Thank You Christina. You deserve a raise!

Jeffrey H.
United States United States
Haven't been able to use ot yet.

I haven't been able to use mine yet because the website description was so unclear that I ordered the wrong valve. The rest of it seems to be made well & easy to assemble, but I've been waiting several days for the replacement part to arrive, and it hasn't arrived yet.

Malcom B.
United States United States
Great filters, last for ages

Brilliant product.been using for years. Water taste is excellent and filters have lasted me for years.

United States United States
Great filtering system!

It produces excellent drinking water on my municipal water system. Pretty easy to install or get someone who knows.

Customer Service
M-F 9am - 5pm EST (800) 934-0051 or (770) 951-5600