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Feel confident with every sip that you are providing the best quality water for you and your family. The Aquifer reverse osmosis (RO) water filtration system effectively reduces contaminants including arsenic, fluoride, TDS, bacteria, virus, lead, mercury, chlorine, and pharmaceuticals in your cold water. Install your Aquifer reverse osmosis filtration system with a KOHLER reverse osmosis-compatible Wellspring beverage faucet, available in five finishes and Traditional or Contemporary styles.


  • Four-Stage Filtration System Reduces Contaminants Such As Arsenic
  • Fluoride
  • Bacteria
  • Virus
  • Lead
  • Mercury
  • Chlorine
  • Chloramine
  • Select Pharmaceuticals
  • And More
  • Reduces Over 95% Of Perfluorooctanoic Acid (Pfoa) And Perfluorooctane Sulfonate (Pfos) In Drinking Water
  • 1:1 Ratio High-Recovery Reverse Osmosis Membrane Creating Less Waste Water
  • Provides Up To 27.5 Gallons Per Day
  • Or The Equivalent Of Over 200 16.9-Oz. Bottles Of Water (Results May Vary Based On Water Pressure
  • Temperature And Incoming Water Quality)
  • 0.5 Gpm (1.9 L/Min) Maximum Flow Rate At 60 Psi (4.1 Bar).
  • 3.2 Gallon Storage Tank
  • Filter Head Automatically Turns Off The Water Supply When Cartridge Is Removed
  • Requires Kohler Ro-Compatible Beverage Faucet With Air Gap
  • Includes Four Filter Cartridges (K-22156
  • K-22157
  • K-22158
  • K-23334)

KOHLER K-22155-NA Aquifer Reverse osmosis (RO) water filtration system

KOHLER K-22155-NA Aquifer Reverse osmosis (RO) water filtration system

Regular price $523.22 USD
Sale price $523.22 USD
In Stock: 18

Model: K-22155-NA

30 Days Return Policy

We offer a 30 days money back guarantee from the date your order is delivered to you. 

To be eligible for an return, your item must be unused and in the same condition that you received it must also be in the original packaging. 

Several types of goods are exempt from being returned. Perishable goods such as food, flowers, newspapers, or magazines cannot be returned. We also do not accept products that are intimate or sanitary goods, hazardous materials, or flammable liquids or gases. 

To complete your return, we require a receipt or proof of purchase. 
Please do not send your purchase back to the manufacturer. 

There are certain situations where only partial refunds are granted (if applicable) 
- Any item not in its original condition, is damaged or missing parts for reasons not due to our error 
- Any item that is returned more than 30 days after delivery 

Refunds (if applicable) 
Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund. 
If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days. 

Late or missing refunds (if applicable) 
If you haven’t received a refund yet, first check your bank account again. 
Then contact your credit card company, it may take some time before your refund is officially posted. 
Next, contact your bank. There is often some processing time before a refund is posted. 
If you’ve done all of this and you still have not received your refund yet, please contact us at

Sale items (if applicable) 
Only regular priced items may be refunded, unfortunately, sale items cannot be refunded. 

Exchanges (if applicable) 
We only replace items if they are defective or damaged. If you need to exchange it for the same item, send us an email at and send your item to Great Northern Kitchen and Bath, 1221 Landmeier Road, Elk Grove Village, IL  60007, United States. 

To return your product, you should mail your product to Great Northern Kitchen and Bath, 1221 Landmeier Road, Elk Grove Village, IL  60007, United States 

You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of return shipping will be deducted from your refund. 

Depending on where you live, the time it may take for your exchanged product to reach you may vary. 

If you are shipping an item over $75, you should consider using a trackable shipping service or purchasing shipping insurance. We don’t guarantee that we will receive your returned item.


  • Length: 4-13/16"
  • Width:
  • Height: 16-1/8"
  • Depth:

Product Information

  • Collection: Aquifer
  • Style:
  • ADA: No
  • Material: Plastic
  • Installation Type:
  • Watersense: No
  • Flow Rate:
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