TOTO WASHLET K300 w/ EWATER+ SW3036R#01, SW3036R#12

15% Off this TOTO Washlet w/ Coupon:

Color: Cotton White
Size: Elongated
In stock
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The TOTO K300 Washlet (SW3036R) is TOTO's updated premium bidet toilet seat. With a slim design, the K300 SW3036R washlet is available in Elongated size only and includes the typical premium bidet seat features like tankless water heating, warm air dryer, deodorizer, heated seat and a self cleaning nozzle.  Compared with the previous SW3036 model, this updated K300 SW3036R has the addition of TOTO's eWater+ feature.

California residents see Prop 65 WARNINGS


SW3036R#01 Washlet K300 Cotton White

SW3036R#12 Washlet K300 Sedona Beige


With the K300 washlet, TOTO is trying its hand in the mid-range, online bidet seat market.  Compared to the lower end C200 and C100 models, the K300 has a much slimmer and lower profile design.  The C series washlets are very bulky, around 8"-9" tall in the rear.  While they function ok, the bulkiness of that model range is a big turn off to many users.  The TOTO K300 SW3036R bidet is just 5.25" tall in the very rear, so it's design is much more modern and in line with other premium bidet seats on the market.  The other big improvement the K300 has is the tankless water heating system.  This makes it much more energy efficient and provides unlimited warm water for maximum comfort. The round size was also eliminated in the K300 washlet series.

So what separates the K300 SW3036 from TOTO's highest end models like the S500e and S550e?  The two major differences are the absense of TOTO's unique eWater+ system, as well as the slightly bulkier design.  TOTOs highest end models are about 4.5" tall in the rear, so they are the lowest profile bidet seats on the market.  While the K300's 5.25" design isn't that much taller, it's closer in line with other brands on the market like Bio Bidet, Brondell and Alpha. The K300 washlet also does not have an automatic lid/seat or an LED nightlight.

Self-Cleaning Wand with EWATER+

After each flush, EWATER+ mists on the wand and toilet bowl, reducing the need for harsh cleaning chemicals.


Features and Functions

Gentle Aerated, Warm Water, Dual Action Cleansing Spray
The main function of the WASHLET w/ soft and hard sprays.

Instant Water Heating System
For continuous warm water and energy saving.

Convenient Slim Wireless Remote Control
Wall mountable with illuminated buttons.

Oscillating or Pulsating Functions
For maximum comfort, take advantage of the oscillating or pulsating spray patterns.

Hands Free Dryer
Warm air drying with adjustable temperature (3 levels).

Rear Spray (Soft)
A soft, comfortable spray.

Rear Cleanse (Hard)
Warm water spray with adjustable water temperature and pressure.

Front Cleanse 
Warm water spray with adjustable water temperature and pressure.

Heated Seat
Comforting, warm seat.

Self-cleaning Wand
Wand is cleaned before and after every use.

Automatic Air Deodorizer
Air is filtered to help remove odor.

Water spray that wets the bowl before use.

User Presets
Save settings for 2 users.


Power Rating  AC 120 V 60 Hz
Power Consumption  1274 W
Max Power Consumption  1430 W
Power Cord Length  3.94 ft (1.2 m)
Spray Volume Rear Cleansing:
0.07 – 0.11 gal/min
Rear Soft Cleansing:
0.07 – 0.11 gal/min
Front Cleansing:
0.08 – 0.11 gal/min
Spray Features Adjustable Surface Temp:
86 – 104 ºF (30 – 40 ºC)
Safety Device:
Temperature Fuse
Warm Air Dryer Features Adjustable Air Temp:
95 – 140 ºF (35 – 60 ºC)
Airflow Volume:
10.24 ft3/min (0.29 m3/min)
Safety Device:
Temperature Fuse
Heated Seat Features Adjustable Surface Temp:
82 – 97 ºF (28 – 36 ºC)
Safety Device:
Temperature Fuse
Water Supply Pressure Minimum:
7.25 PSI (Dynamic)
108.75 PSI (Static)
Ambient Temp.  32 – 104 ºF (0 – 40 ºC)
Warranty  One Year Limited Warranty
Shipping Weight  14.5 lbs
Shipping Dimensions  23-1/2"L x 18-1/2"W x 7"H

Fitment Guide 

washlet fitment


Download Product Sheets

SW3036R Spec Sheet

Users Manual

SW3036R Users Manual

The TOTO K300 Washlet from comes in a 12 Month Manufacturer's Warranty (from date of purchase).

Fitment and Installation Guides

Customer Reviews

Based on 14 reviews
Steven Meineke
Quality product

After comparing the features and reviews of several models from different manufacturers, we decided on Toto based mainly on wanting to buy from a manufacturer with a stellar reputation and having had prior positive experiences as owners of Toto toilets. Install was easy. Love the remote with setting for two users. Stays clean and we only use the tiniest amounts of toilet paper now, and don’t need to spray air freshener any more. Shipping was fast.

Robert Barth
Great easy to install washlet.

Really love this washlet, the features are amazing. Good pressure, on demand hot water, seat heater, dryer, everything you want. Can't recommend it enough.

George Aaron
This Washlet is terrific!

A few years ago, when we traveled to Italy, I had my first experience with a bidet in a hotel. It was love at first wash! After considering a seat for the toilet in our master bath, I discussed it with my spouse, who was not so enamored of the idea. She even joked about it, so I let it drop. But for Christmas that year, she gifted me one. Sadly, it was for a round bowl and did not fit. Back it went. Recently however, I decided to investigate further, and discovered bidet king and elongated seats. I researched and narrowed my options, until deciding on the Toto K300. It was shipped promptly. Upon unpacking, I was concerned about a lack of detailed installation instructions, but upon looking at the supplied parts, I thought it should be easy to install. It was fairly intuitive, and after about 15 minutes, the seat was installed and ready to use. The manual does a great explanation for the remote functions. After having this installed for about a month, I can only wonder why I waited so long. This Washlet is just so damn civilized! I still use a small fold of TP for final drying, as I am not patient enough to wait out the dryer.

Part of the reason for this model vs. others, was the fact it is made by Toto. Plus I wanted ample warm water when I use it. No chance of getting a cold wash with this device. And the 15% discount for Toto was a real plus. For me, this is an easy unqualified recommendation. If you are considering this model, just buy it. You won’t be disappointed.

Teresa L. Garrido


David L
Great bidet, great service

This is the third Toto bidet washlet I have purchased in about the last 20 years, so I have high expectations from the K300. The notable thing was the excellent customer service I received from BidetKing. I contacted customer service several times before ordering, to find out if the K300 would be a good replacement for my 11-year-old S300. I received intelligent, informative answers to my questions, and then I asked if I could slightly delay their speedy delivery so I would be home when the K300 arrived. BidetKing executed this simple request perfectly. The K300 itself is the best Toto I've had, and I installed it easily on a new Toto Ultramax II one-piece toilet. The combination of the EWater, the pre-mist and post-cleaning, not to mention the coating inside the toilet has made for the easiest setup to keep clean you can imagine. I think the overall volume of the water during cleansing is a bit less with the K300 than my previous unit, but the accuracy of the stream from the nozzle is perfect for my wife and me. Also, the personalized settings for each of us is handy. The air dryer is powerful, much more so than my old unit. The overall fit, finish and performance so far of the K300 has been excellent. I'm so glad I bought from BidetKing instead of elsewhere - they really are a responsive team that cares about customer service. .

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