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TOTO Washlet K300 Bidet Seat

TOTO Washlet K300 Bidet Seat

SKU: SW3036R#01

Price: $857.00
List Price: $1,223.00
Price: $857.00
You Save: $366.00 (30%)
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  • 1 Year Warranty

Smart Comfort in a Sleek Package

The TOTO Washlet K300 combines advanced features with a refined profile, giving you the comfort and cleansing benefits of a high-end bidet seat without unnecessary bulk. It offers warm water cleansing, a heated seat, warm air dryer, and deodorizer—all housed in a slim, elegantly contoured frame.

Unlike entry-level models that rely on a water reservoir, the K300 uses instant water heating technology for continuous warm water during use. This premium feature is usually reserved for the S7 series, making the K300 a standout choice at its price point.

Refined Fit, Intuitive Control

  • The Washlet K300 features a modern, low-profile design that complements any standard elongated toilet. Its streamlined appearance and gentle contours help it blend seamlessly into your bathroom space, with discreet water and power connections that maintain a tidy finish.

    Built for comfort and cleanliness, it offers TOTO's signature warm water cleansing and a heated seat. Unlike entry-level models, the K300 adds a wireless remote and customizable settings for a more personalized experience.

  • The Washlet K300 comes with a wall-mounted wireless remote that offers full control of every function. Adjust the water pressure, spray position, temperature, dryer intensity, and seat warmth from one sleek and intuitive interface.

    Two user presets allow for quick recall of personalized settings, and the dual-sided design keeps the front clean while placing advanced options on the back. It's a refined controller for a refined bidet seat.

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Comfort-Driven Performance

The K300’s dual-action spray offers both oscillating and pulsating modes, delivering a customizable clean that adapts to your needs. It features instantaneous water heating, which provides an uninterrupted flow of warm water without waiting—an upgrade typically found only in the S7 and S7A.

Combined with a warm air dryer, deodorizer, and self-cleaning wand, the K300 delivers a full-service cleansing experience in a sleek, user-friendly form.

Designed for Modern Living

Slim and compact, the Washlet K300 maintains a clean, low-profile look that enhances your toilet without overwhelming it. Its lid and seat follow gentle curves that match modern bathroom aesthetics, while its hidden connections keep the setup visually tidy.

Compatible with most elongated toilets, the K300 is easy to install and even easier to enjoy. It brings many of the same advanced features found in TOTO’s premium seats at a more accessible price point.

TOTO Washlet K300 Features

Comfort & Convenience

  • Heated Seat: Adjustable temperature seat adds comfort year-round.
  • Warm Air Dryer: Provides hands-free drying for added convenience.
  • SoftClose® Seat and Lid: Prevents slamming and adds a premium touch.
  • User Presets: Two memory settings save your preferred wash routines.
  • Quick-Release Seat: Detaches easily for thorough cleaning.

Advanced Hygiene

  • EWATER+® Technology: Uses electrolyzed water to auto-clean the wand after every use.
  • PREMIST® Function: Mists the bowl before use to reduce waste adhesion.
  • Self-Cleaning Wand: Automatically cleans before and after each use.
  • Dual Action Spray: Offers front and rear cleanse with oscillating and pulsating modes.
  • Deodorizer: Neutralizes odors with an integrated fan and filter.

Personalization & Control

  • Wireless Remote Control: Dual-sided remote manages all settings and features.
  • Adjustable Spray Settings: Customize water temperature, pressure, and nozzle position.
  • Instant Water Heating: Provides continuous warm water for extended use.
  • Two User Memory Presets: Save preferences for two individuals.
  • Wall-Mountable Remote Holder: Keeps the control within easy reach and off the countertop.

Smart Performance

  • Continuous Warm Water: Instant heater delivers comfort without interruption.
  • Energy-Saving Modes: Automatically reduces energy consumption when not in use.
  • Reliable Power Supply: Plugs into any standard GFCI outlet.
  • Automatic Cleaning Routines: Keep the unit hygienic with minimal maintenance.
  • Durable Build Quality: Backed by TOTO’s reputation for longevity and reliability.

Elegant & Thoughtful Design

  • Slim Profile: TOTO’s lowest-profile remote-controlled Washlet for minimalist appeal.
  • Discreet Installation: Water and power connections stay out of sight for a clean finish.
  • Soft Contours: Blends easily with modern toilet styles and bathroom aesthetics.
  • Universal Fit: Installs on most elongated toilets with minimal tools.
  • Seamless Experience: Delivers high-end performance in a refined form factor.

TOTO Washlet K300 Fitment

  • To ensure your brand new bidet seat will fit on top of your toilet, determine the size and shape of your bowl. Most toilet bowls come in one of two standard shapes:

    1. Elongated: Common in modern toilets and typically around 18.5" in length
    2. Round: Common in older toilets or smaller bathrooms and around 16.5" in length

    Once you determine what shape bidet seat you need, check these three things:

    1. There should be at least 5.5" of space between the seat's bolt holes.
    2. There should be at least 2" of space between the seat's bolt holes and the toilet tank.
    3. If your toilet meets the tank at or near a 90-degree angle, the TOTO Washlet K300 is likely to be a perfect fit.

TOTO Washlet K300 Installation

Bidet seats install like a classic toilet seat and you can follow the included installation instructions without hiring a plumber. There are only a few additional factors to consider:

  • Make sure your toilet can accomodate a bidet seat with this guide
  • Access to a standard GFCI electrical outlet is required for your bidet seat to function.
  • Your bidet seat will utilize the same water connection that fills the toilet's tank via an included T-valve.
  • See the video guide below for help installing your new TOTO Washlet K300!

TOTO Washlet K300 Resources

TOTO Washlet K300 Specification Sheet

TOTO Washlet K300 User Manual

TOTO Washlet K300 Installation Manual

TOTO Washlet K300 Spare Parts Manual

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