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Faucet Diagram |
Features
- Combines the Aquasana AQ 4500 counter top water filter system with the under-sink installation kit.
- Exclusive dual cartridge, 5 stage filtration system uses a combination of carbon filtration, ion exchange and sub-micron filtration to selectively remove contaminates sequentially in a patented process for maximum effectiveness.
- Easily replaceable filter cartridges and a cleanable outer wrap for sediment removal extends filter life.
- High impact ABS plastic housing is dishwasher safe for cleaning.
- Cartridge "A" removes sediment, turbidity and chlorine.
- Cartridge "B" removes lead, synthetic chemicals (herbicides, pesticides and industrial solvents) and water borne parasites or cysts (like cryptosporidium and giardia).
- Modern compact design looks great on your countertop.
- Complete instructions, installation hardware and quick-connect fittings allow for easy installation under your sink cabinet in about 20 minutes.
- Long-life carbon filter cartridges are rated for 500 gallons or 6 months.
- California Department of Health Services certified for the reduction of MTBE, Volatile Organic Compounds (V.O.C.s), Trihalomethanes (THM's), Cysts and Lead.
- Independently tested by Underwriters Laboratories to NSF Standards 42 for the reduction of Chlorine and Particulates.
- Click here to view Aquasana AQ 4000 Performance Data Sheet and California DHS Certificate.
- Includes all-metal Chrome Long Reach Lead-Free Push Button Faucet to be mounted in sink sprayer hole or a separate sink hole can be provided.
- 100 day replacement warranty for defects in materials and workmanship.
- Optional "Water-4-Life" automatic filter replacement program includes "Lifetime Warranty" for the filter system.
- Purchasing Aquasana Shower Filter and Countertop Water Filter Combination Pack saves money!
- Dimensions: height 9", width 7", depth 4".
- Flow Rate: 0.4 gpm at 60 psi pressure.
- Made in the USA.
View our Drinking Water Filter Buying Guide
How It Works
This patented twin cartridge drinking water filter under-counter system installs in about 20 minutes and provides up to 30 gallons an hour of ultra-filtered high quality water for drinking, cooking and other beverages. Includes filter housing‚ all-metal chrome plated long reach faucet, under-counter installation kit, twin filter cartridge set and easy to follow instructions.
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Water Filter Cartridges |
Chrome Faucet |
Aquasana’s exclusive dual filter system uses a combination of carbon filtration‚ ion exchange and sub-micron filtration to produce truly healthy‚ great tasting water at the convenience of your kitchen tap. Filters out Chlorine‚ Lead‚ VOCs, MTBE and Cysts (chlorine resistant parasites), and leaves in the natural trace minerals. Click here to read more about Drinking Water Treatment Technologies in our Drinking Water Filter Buying Guide.
Chrome Faucet - Water travels from the cold water line connection up to the faucet where it is controlled by the faucet on/off lever. When the faucet lever is moved to the on position, water from the cold water line continues down to the water filter system through the filter cartridges and then back up to the faucet to be dispensed through the faucet spout. The faucet is all metal and chrome plated brass. Long reach style makes filling containers with filtered water easy. Push lever down for controlled filling or lifting the lever up locks it in place for continuous filling until you push lever back down. Faucet has color coded tubing fully attached and ready to install. Note: Only Aquasana faucets may be used with this system as they are a vented "pressure-less" design that does not allow constant household pressure to be maintained in the filter housing when the faucet is off.
Cartridge "A" - 1st stage removes sediment and turbidity, preventing microscopic particles from clogging the filter media and reduce it's ability to remove contaminants. In the 2nd stage, Chlorine is then removed allowing the following stages of filtration to concentrate on lead and synthetic chemicals. After water has passed through the Cartridge "A", it then flows to Cartridge "B".
Cartridge "B" - 1st stage removes lead through an ion exchange process where lead ions (charged particles) are replaced with potassium ions. The potassium enhances the natural mineral balance of water and helps give it that natural spring water taste. In the 2nd stage, the removal of synthetic chemicals (VOC's) occurs. The final 3rd stage is a 0.5 micron filter to remove water borne parasites or cysts such as Cryptosporidium and Giardia.
Important: Do not use where water is microbiologically unsafe or with water of unknown microbiological quality, except that systems claiming cyst reduction may be used on water containing cysts.
Installation
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Plastic "T" Fitting Installation |
Brass "T" Fitting Installation |
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Cabinet Mount |
Under-Counter Installation Kit |
Step One - determine the appropriate location of the faucet to be mounted. Faucet may be mounted using an existing hole for a sprayer nozzle or other accessory. You can drill a 7/8" hole in the sink or countertop for a new location if an existing hole is not available.
Step Two - mount the faucet through the countertop or sink as shown in the instruction diagram using the chrome top plate, black washer, steel washer and brass nut to tighten the assembly.
Step Three - mount the filter housing to the cabinet or wall using the white steel mounting bracket and screws. Make sure the location of the filter unit allows the tubing from the faucet to connect to the filter housing without king the tubing. Faucet tubing is approximately 42" long.
Step Four - turn off your cold water supply valve and attach either supplied "T" valve fitting to the cold water line as shown in the instruction diagram.
Step Five - once the filter and faucet are mounted and the "T" valve is attached to the cold water supply line, connect the White tubing to filter cap "A", the Blue tubing to cap "B" and the Red tubing to the "T" valve by pushing the tubing into the locking collets. Open the cold water supply valve to allow water to flow to the faucet. Check for leaks. Lift the black lever on the faucet until locked in position to allow water to run until all cloudiness and air bubbles are gone. The initial flow of water may be slightly discolored and cloudy due to carbon fines and air bubbles. This is normal. Once the water flows clear in about 2-3 minutes, the Aquasana water filter system is ready for use.
Certifications and Performance
There are no federal regulations controlling the sale of Drinking Water Treatment Systems and components for residential use. Voluntary standards exist and several states have established requirements for the sale of water treatment devices. Many systems and components that exist in the marketplace have not been tested or verified they remove the contaminants claimed for the products. Some filter system components will actually add contaminants to your water that you are trying to remove and may cause the system to exceed the EPA drinking water standards. For example, non lead-free faucets may add lead to the drinking water and non FDA compliant plastics may leach organic chemicals into the drinking water. Certified tested system and component performance provides you with assurance that the product will remove the contaminants claimed for the system or component, meets standards for materials in contact with the water, has the necessary structural integrity for its operation and advertising claims are accurate. Without testing and certification, there is no guarantee the drinking water treatment system or component will perform as claimed. Click here for more detailed information on the various Certification Standards for Drinking Water Treatment Systems.
Aquasana's contaminant reduction capabilities are 3rd party tested by Underwriters Laboratories (UL) under NSF Standards 42 and 53 and certified by the California Department of Health Services (DHS). Click here to view Aquasana Performance Data Sheet and California DHS Certificate.
Maintenance

The recommended filter change period for the Aquasana AQ 4000 water filter system is 500 gallons or every 6 months.
Replacing the Filter Cartridges - remove the threaded caps by turning in the opposite direction of the arrows. Remove both filter cartridges and dispose of them. Install the new filter cartridges with the "A" cartridge being placed in the "A" housing with the O Ring end first. Install the "B" cartridge into the "B" housing with the O Ring end last. Reinstall the treaded caps by turning in the direction of the arrows and tighten by hand only. After the cartridge installation is complete, turn on the cold water at the faucet and pull the diverter valve pin to activate the water flow through the system. Check for leaks around the threaded caps. The initial flow of water may be slightly discolored and cloudy due to carbon fines and air bubbles. This is normal. Once the water flows clear in about 2-3 minutes, the Aquasana water filter system is ready for use.
Water for Life Program
The Water-4-Life program is offered direct from Aquasana and information is included in the package. Like any filter, whether it be the filter in your central heating and air conditioning system or the oil filter in your car, water filter cartridges must be replaced at the appropriate time in order to get the best results. The problem most of us have is remembering when these cartridges are supposed to be replaced, unless we have some kind of reminder. The Water-4-Life program is designed to not only remind you when to replace the filter cartridges, but also to reward you for using this convenient program.
When you sign up on the Water-4-Life program you will automatically receive a fresh, new replacement filter cartridge every six months, delivered directly to your door, with easy to follow replacement instructions. Also, with the Water-4-Life program you get free shipping in the contiguous U.S. You eliminate the inconvenience of re-ordering and remembering.
As an added incentive, the Water-4-Life program also offers a life time warranty for the complete filter system. Instead of the standard 100 day replacement warranty, you get free replacement of any damaged or broken component parts for as long as you own the system, even if the damage is your fault. All you pay is a small shipping and handling charge.
Operating Specifications
Not intended to be used where the water is microbiologically unsafe or with water of unknown quality without adequate disinfection before or after the unit. Systems certified for cyst reduction may be used on disinfected water that may contain filterable cysts.
- Operating Pressure Range: 20 - 50 psi.
- Operating Temperature Range: 40 - 90°F.
- Service Flow Rate: 0.4 gpm.
- Rated Capacity of Filter Cartridges: 500 gallons or every 6 months.
- Weight (filled with water): approx. 3 lbs.
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