PureWash® E590 Elongated bidet toilet seat
The PureWash® E590 Elongated Bidet Toilet Seat is designed with user comfort and hygiene in mind. Its ergonomic design ensures comfortable seating with an easy-to-use side panel, while the Quick-Release™ feature allows for effortless cleaning. The Quiet-Close™ functionality prevents slamming, contributing to a quieter bathroom experience. Additionally, the automatic deodorization system utilizes a carbon filter for effective odor control, and the warm-air drying feature offers adjustable temperature settings for added comfort. To top it off, the self-cleaning wand employs UV light for automatic cleaning, ensuring optimal hygiene.
Class: Standard | Type: Seat |
Cleansing Performance: 3/5 | Design: 3/5 |
Features: 5/5 | Overall Score: 77 |
Design and Aesthetic Appeal
Performance and Features
Key Features
Adjustable Settings
Adjustable Water Pressure
Customizable Nozzle Positions
Deodorizing Technology
Dual Water Spray System
Heated Seat
Night Light
Seat Sensor
Self-Cleaning Nozzles
Slow Close
Spray Modes
Stainless Steel Nozzle
UV Sterilization
Air Dryer
Hybrid Warm Water
Oscillating Wash
Automatic Lid and Seat
Massage Feature
Power Saving Mode
Smart Remote Control
DIY Install
Ambient Temp.
Feminine Wash
Enema Function
Technical Specifications
Feature | Description |
---|---|
Installation Notes | Requires dedicated electrical GFCI circuit (120 V, 15 A, 60 Hz) Requires connection to toilet water supply line. All hoses and connections are included |
SKU(s) | K-8298 |
Warranty | This product is covered under the KOHLER Intelligent Toilet and C3 Cleansing Seat Three-Year Limited Warranty. |
Water Supply Pressure | 20 (139 kPa) - 80 psi (551 kPa) |
Install and Maintain Manuals
Buy and Price
User Reviews

Life Changing!
I have used this seat for nearly two months and it has met every expectation. I did have some difficulty attaching to the toilet pump connection and wound up calling a plumber. Once this was installed properly, the toilet seat has worked spectacularly. The pressure is great and does a spectacular job cleaning. I have definitely saved quite a few trees by not using toilet paper anymore. I get off the bowl feeling fresh and cleaner than I have ever been. Hurt my shoulder so this is definitely making my life easier. I highly recommend! Cant believe I went all these years without it.

Owner-installed C3-155 Bidet Toilet Seat
This bidet toilet seat is a great update to our bathroom. The installation of the seat is fast and straight forward and the bidet components work as advertised. The hard part of the installation has nothing to do with the bidet seat, itself. I tried installing a 15-amp outlet next to the toilet by tapping into a receptacle in an adjacent bedroom. This worked but I discovered that the circuit I used also had an exhaust fan and two 320-watt lights that are located in the master bath two rooms away... This bidet toilet seat is a great update to our bathroom. The installation of the seat is fast and straight forward and the bidet components work as advertised. The hard part of the installation has nothing to do with the bidet seat, itself. I tried installing a 15-amp outlet next to the toilet by tapping into a receptacle in an adjacent bedroom. This worked but I discovered that the circuit I used also had an exhaust fan and two 320-watt lights that are located in the master bath two rooms away. The master bath and the bathroom with the new bidet seat, share three GFI-protected 20-amp outlets. I removed the newly installed cable from the 15-amp circuit and tapped into the GFI load cable (not the GFI line cable), creating a 4th 20-amp GFI protected outlet next to the toilet with the new bidet seat. This 2nd configuration works and the lights in the master bath are no longer blinking. I have a lot of experience with home electrical systems so I felt comfortable adding an outlet next to the toilet in the aforementioned bathroom. I also have experience with water supply connections and had no trouble modifying the water supply connection to the toilet to accommodate the water inlet for the bidet seat. The electrical work took place in the attic over a period of days and the plumbing part took about one hour. The bidet seat installation took about 20 minutes. I think a dedicated 15-amp circuit would have worked fine assuming that no other circuits would be added in the future. If you are adding a new circuit coming from the electrical panel, it would be advisable to add a dedicated 20-amp GFI circuit. With respect to the bidet seat installation, the instructions are slightly misleading where it says to slide the seat towards the attachment bracket. The bracket has a "lip" that the seat must ride over to drop, and then snap, into place. I found that you can slide the seat until there is contact with the bracket and then slightly lift the seat over the lip and use a gentle downward force to snap the seat into place. I also found that while attempting to slide the seat into its bracket, one side would connect but not the other. In this case, the seat was floating above the edge of the toilet bowl on the unconnected side. I thought it best not to try to force the unconnected side into place but to reverse the process and try again. I found that removing the seat for cleaning works exactly as indicated by the instructions.