Discover the 8 Best Tankless Toilets

Bathroom blues?

Struggling with those bulky old toilets that take up too much space and guzzle water like there’s no tomorrow?

Yeah, we’ve all been there.

It’s a drag.

But don’t worry, there’s a solution!

Time to get acquainted with the world of tankless toilets.

Now, these are not your everyday porcelain thrones.

They’re compact, efficient, and just downright cool.

So sit tight, ‘cause we’re about to spill the beans on the best tankless toilets out there.

This is your ultimate guide to choosing the right one for you.

And… action!

Top 8 Tankless Toilets

Here is the list of Best Tankless Toilets

  • Duravit Wall-Mounted Starck 3 Tankless Toilet – Best Overall
  • HomeBiogas Bio-Toilet Kit – Best Eco-Friendly Option
  • KOHLER K-6299-0 Veil Wall-Hung Elongated Toilet Bowl – Editor’s Choice
  • Swiss Madison Well Made Forever SM-WT514 St. Tropez Back to Wall Toilet – Best Budget Option
  • TOTO MS992CUMFG01 Neorest Bathroom-Hardware – Best High-End Option
  • American Standard Madera 3451 – Best for Families
  • Saniflo Sanicompact Self-Contained Macerating Toilet – Best for Small Spaces
  • TOTO Aquia Wall-Hung Toilet – Best Wall-Hung Option

Duravit Wall-Mounted Starck 3 Tankless Toilet

The Duravit Wall-Mounted Starck 3 Tankless Toilet is a sleek and modern addition to any bathroom, designed by renowned French furniture designer Philippe Starck.

This wall-mounted toilet is not only visually appealing but also space-saving, making it an ideal choice for smaller bathrooms or those looking to maximize their space.

One of the key features of this toilet is its dual-flush system, which uses 0.8 and 1.6 gallons per flush, helping to conserve water and reduce your environmental footprint.

Additionally, the Starck 3 toilet is compatible with the SensoWash Starck shower-toilet seat, offering a comfortable and hygienic experience.

The toilet is WaterSense listed and cUPC listed, ensuring compliance with industry standards and certifications.

It is also ADA compliant when installed with a seat height of 17″” – 19″” from the finished floor.

Key Specifications

  • Design: Philippe Starck
  • Flush Type: Dual Flush (0.8 and 1.6 gallons per flush)
  • Compatibility: Suitable for SensoWash Starck
  • Certifications: WaterSense listed, cUPC listed, ADA compliant (with proper seat height)
  • Installation: Durafix included for concealed installation


  • Sleek and modern design
  • Space-saving wall-mounted installation
  • Water-saving dual-flush system
  • Compatible with SensoWash Starck shower-toilet seat


  • Some users report poor flushing power
  • Toilet seat not included

HomeBiogas Bio-Toilet Kit

The HomeBiogas Bio-Toilet Kit is an innovative and eco-friendly solution for off-grid living, offering a sustainable alternative to traditional compost toilets.

This unique system connects to the HomeBiogas appliance, which transforms organic waste into clean cooking gas, making it an ideal choice for those looking to reduce their environmental footprint.

One of the standout features of the HomeBiogas Bio-Toilet Kit is its ability to decompose waste using an anaerobic system, converting it into renewable biogas for cooking.

This closed-loop system exemplifies the kind of technology needed for a sustainable future.

Additionally, the HomeBiogas system uses only 0.3 gallons of water per flush, making it an efficient and water-saving option.

The Bio-Toilet Kit is easy to install, safe, and hassle-free, providing a complete eco-cycle in your own home without the need for external resources.

It’s also compatible with both HomeBiogas 1.0 and 2.0 systems, offering flexibility and adaptability for different users.

Key Specifications

  • System Compatibility: HomeBiogas 1.0 and 2.0 systems
  • Waste Decomposition: Anaerobic system
  • Water Usage: 0.3 gallons per flush
  • Installation: Easy and safe


  • Eco-friendly and sustainable solution
  • Converts waste into renewable biogas for cooking
  • Water-saving and efficient
  • Easy installation and safe operation


  • DIY setup may require a half-day’s work
  • Limited user reviews available online

KOHLER K-6299-0 Veil Wall-Hung Elongated Toilet Bowl

The KOHLER K-6299-0 Veil Wall-Hung Elongated Toilet Bowl is an innovative and space-saving solution for modern bathrooms.

Its wall-hung design saves up to 12 inches of precious bathroom space compared to KOHLER’s longest floor-mount models.

The mounting hardware is completely concealed, giving the Veil a sleek, seamless look that is incredibly easy to clean.

Made from vitreous china, this toilet offers a contemporary look and durability.

The Veil features a compact elongated bowl that provides added comfort while occupying the same space as a round-front bowl.

It also has a dual-flush system, allowing users to choose between a 0.8 GPF or 1.6 GPF flush, promoting water conservation.

The toilet comes with a Reveal Quiet-Close seat, ensuring a gentle and quiet closing of the seat and lid.

Key Specifications

  • Bowl Type: Elongated
  • Flush Type: Dual-flush (0.8/1.6 GPF)
  • Material: Vitreous china
  • Mounting: Wall-hung
  • Seat Included: Reveal Quiet-Close seat


  • Space-saving wall-hung design
  • Sleek, seamless appearance
  • Easy to clean
  • Dual-flush system for water conservation
  • Comfortable elongated bowl


  • Some users report needing multiple flushes for effective waste removal
  • Higher cost compared to some floor-mount models

Swiss Madison Well Made Forever SM-WT514 St. Tropez Back to Wall Toilet

Swiss Madison Well Made Forever SM-WT514 St. Tropez Back to Wall Toilet is an excellent budget option for those looking to upgrade their bathroom with a sleek and modern tankless toilet.

Its elegant design features clean lines and fluid curves, adding a touch of sophistication to any bathroom.

The elongated bowl offers added room and comfort, while the durable ceramic material ensures long-lasting performance.

One of the standout features of this toilet is its space-saving back-to-wall design, which is perfect for both residential and commercial bathrooms.

The carrier tank is completely concealed, helping to increase space while still offering easy access to the plumbing system through the actuator plate.

Additionally, the skirted trapway makes cleaning a breeze.

The SM-WT514 also comes with a Slymm™ soft-close, quick-release toilet seat for added convenience.

It pairs seamlessly with the SM-WC324 or SM-WC326 tank, which are sold separately.

This toilet is eco-friendly, featuring a dual flush system with 0.8 GPF and 1.28 GPF options to save water and protect the environment.

Key Specifications

  • Bowl Shape: Elongated
  • Material: Ceramic
  • Flush Type: Dual Flush
  • Gallons Per Flush: 0.8 GPF / 1.28 GPF
  • Seat Feature: Slymm™ Quick Release Toilet Seat
  • Dimensions: 22″” Length x 14″” Width x 16″” Height
  • Weight: 66 lbs
  • Trapway Diameter: 2.75″”
  • Flush Valve Size: 2.75″”
  • Warranty: 1 Year Limited


  • Elegant and modern design
  • Space-saving back-to-wall installation
  • Easy-to-clean skirted trapway
  • Eco-friendly dual flush system


  • Carrier tank and actuator sold separately
  • Limited color options

TOTO MS992CUMFG01 Neorest Bathroom-Hardware

The TOTO MS992CUMFG01 Neorest Bathroom-Hardware is a top-of-the-line, high-end tankless toilet that offers a luxurious and technologically advanced bathroom experience.

As the “”Best High-End Option,”” this toilet combines sleek design, eco-friendliness, and a range of innovative features to provide users with unparalleled comfort and convenience.

One of the standout features of this toilet is its dual flush technology, which allows users to choose between a 0.8 or 1.0-gallon flush, conserving water and reducing environmental impact.

The integrated bidet seat offers a variety of spray settings, water pressure, and temperature control for a personalized and hygienic experience.

The automatic lid and seat open and close as you approach and leave the toilet, providing a hands-free and sanitary experience.

The TOTO Neorest 700H also boasts a heated seat, air deodorizer, and a Premist system that cleans the bowl and prevents waste from sticking.

The CeFiONtect glaze prevents particulates from adhering to the ceramic surface, keeping the toilet cleaner for longer and reducing the need for harsh cleaning chemicals.

Key Specifications

  • Flush Type: Dual Flush (0.8 or 1.0 GPF)
  • Bowl Shape: Elongated
  • Seat: Heated, Auto Open/Close
  • Bidet Features: Rear cleanse, soft rear cleanse, front cleanse, oscillating, pulsating spray
  • Deodorizer: Air deodorizer
  • Cleaning Technology: CeFiONtect glaze, Premist system, ewater+
  • ADA Compliant: Yes


  • Luxurious and technologically advanced features
  • Eco-friendly dual flush system
  • Integrated bidet seat with customizable settings
  • Hands-free, sanitary experience


  • Expensive compared to other options

American Standard Madera 3451

The American Standard Madera 3451 is an excellent choice for families looking for a high-quality, efficient, and easy-to-maintain tankless toilet.

Its Ever Clean surface ensures that the toilet stays cleaner for longer, reducing the need for frequent cleaning and making it a perfect fit for busy households.

The Madera 3451 is a floor-mounted, elongated flushometer bowl that operates in the range of 1.1 to 1.6 gallons per flush (GPF), making it a High Efficiency Toilet (HET) . Its Maximum Performance (MaP) score of 1,000 grams at 1.1 – 1.6 GPF demonstrates its powerful flushing capabilities, ensuring optimal performance and reduced water usage.

This toilet is designed for durability and longevity, with American Standard’s reputation for producing high-quality commercial toilets for over 137 years.

The Madera 3451 is also ADA compliant, making it accessible for people with disabilities.

Key Specifications

  • Type: Floor-mounted, elongated flushometer bowl, less seat
  • Flush Range: 1.1 – 1.6 GPF (4.2 – 6.0 Lpf)
  • MaP Score: 1,000 grams at 1.1 – 1.6 GPF
  • Rim Height: 15 inches
  • Rough-in: 10 or 12 inches
  • EverClean Surface: Yes
  • ADA Compliant: Yes


  • High efficiency and powerful flushing performance
  • EverClean surface for easy maintenance
  • Durable and long-lasting design
  • ADA compliant for accessibility


  • Seat not included
  • Some shipping restrictions may apply

Saniflo Sanicompact Self-Contained Macerating Toilet

The Saniflo Sanicompact Self-Contained Macerating Toilet is an excellent choice for those looking to maximize space in small bathrooms.

Its compact design allows it to fit into tight spots where conventional toilets cannot.

The Sanicompact is not only space-saving but also water-efficient, using just one gallon of water per flush.

This makes it an eco-friendly option for green-conscious users.

One of the unique features of this toilet is its built-in macerator, which chops up waste to reduce the risk of clogs.

This process, known as maceration, ensures efficient waste disposal and makes the Sanicompact a reliable choice for any bathroom.

Additionally, the toilet is designed for easy access, making it suitable for people with physical limitations.

The Sanicompact is also versatile in terms of installation.

It can be installed in various locations, such as lofts, attics, upper floors, ground floors, basements, and garages.

This flexibility makes it an ideal choice for homeowners looking to add a half bathroom to their property.

Key Specifications

  • Type: One-Piece, Self-Contained Macerating Toilet
  • Flush System: Dual Flush
  • Water Consumption: 1 GPF (Gallon Per Flush)
  • Macerator: Built-In
  • Material: Porcelain
  • Shape: Elongated
  • Installation: Flexible, suitable for various locations


  • Compact design ideal for small spaces
  • Water-efficient, using only 1 GPF
  • Built-in macerator reduces clog risk
  • Versatile installation options
  • Easy access for people with physical limitations


  • Slightly louder than regular toilets
  • No tank may require adjustment for some users

TOTO Aquia Wall-Hung Toilet

The TOTO Aquia Wall-Hung Toilet is a top choice for homeowners seeking a stylish and space-saving solution for their bathrooms.

As the “”Best Wall-Hung Option”” in your article, this toilet offers several unique selling points that make it stand out from the competition.

Firstly, the TOTO Aquia features a sleek, modern design that complements any bathroom aesthetic.

Its wall-hung installation not only saves valuable floor space but also makes cleaning the bathroom floor a breeze.

The toilet’s elongated bowl and skirted design add to its contemporary look while providing comfort for users.

Secondly, the Aquia Wall-Hung Toilet is equipped with TOTO’s Dual-Max Flushing System, which offers two flush options: 0.9 GPF (gallons per flush) for liquid waste and 1.6 GPF for solid waste.

This dual-flush system helps conserve water and lower your overall water consumption.

Lastly, the toilet features TOTO’s CeFIONtect glazing, which creates a super smooth surface that prevents waste from sticking to the bowl, ensuring a cleaner and more hygienic experience.

Key Specifications

  • Bowl Type: Elongated
  • Flush Type: Dual Flush
  • Water Use: 0.9 or 1.6 GPF
  • Design: Wall-Hung, Skirted
  • Coating: CeFIONtect Glazing


  • Sleek, modern design
  • Space-saving wall-hung installation
  • Dual-Max Flushing System for water conservation
  • CeFIONtect glazing for easy cleaning


  • Lower water level compared to standard toilets
  • May require additional cleaning for solid waste

Factors to Consider When Choosing a Tankless Toilet

When selecting a tankless toilet, there are several factors to consider to ensure you choose the best model for your needs.

Here are some key aspects to keep in mind:

Space Requirements

Tankless toilets are known for their compact design, making them ideal for small spaces.

However, it’s essential to measure your bathroom and ensure the model you choose fits comfortably within the available space.

Water Efficiency

One of the main advantages of tankless toilets is their water-saving capabilities.

Look for models with high water efficiency ratings to reduce water consumption and lower your utility bills.

Flush Performance

A good tankless toilet should have a powerful flush to effectively remove waste.

Check the flush performance of different models and opt for one with a strong flush to ensure optimal functionality.

Design and Aesthetics

Tankless toilets come in various designs and styles, so consider the overall aesthetics of your bathroom when choosing a model.

Select a toilet that complements your bathroom’s design and enhances its visual appeal.

Installation and Maintenance

Tankless toilets may require specific installation requirements, such as larger pipes and high water pressure.

Ensure that your home can accommodate these requirements before purchasing a tankless toilet.

Additionally, consider the ease of maintenance for the model you choose to keep it functioning optimally over time.

By considering these factors, you can make an informed decision when selecting the best tankless toilet for your needs.

Tankless Toilets with Bidet Functionality

Tankless toilets with integrated bidet functionality offer a modern, space-saving, and eco-friendly solution for your bathroom.

These toilets combine the benefits of tankless design, such as water efficiency and compact size, with the hygienic advantages of a bidet system.

Benefits of Integrated Bidet Systems

Bidet systems provide a more hygienic and eco-friendly alternative to traditional toilet paper.

They use water to clean, reducing the need for toilet paper and providing a more comfortable and refreshing experience.

Some advanced bidet systems also include features like adjustable water temperature and pressure, heated seats, and warm air dryers for added comfort.

Features to Look for in a Tankless Toilet with Bidet

When selecting a tankless toilet with bidet functionality, consider the following features:

  1. Water efficiency: Look for models with low water consumption and dual flush systems to help conserve water.
  2. Design and aesthetics: Tankless toilets come in various styles and designs, so choose one that complements your bathroom’s decor.
  3. Ease of installation and maintenance: Ensure the model you select is easy to install and maintain, as some tankless toilets may require professional installation or additional plumbing work.
  4. Bidet functionality: Check for models that offer adjustable water temperature and pressure, heated seats, and warm air dryers for a more comfortable experience.
  5. Compatibility: Make sure the bidet system is compatible with your tankless toilet, as some models may require specific water pressure settings or additional components.

By considering these features and keeping the provided LSI Keywords in mind, you’ll be able to find the perfect tankless toilet with bidet functionality for your bathroom.

Final Say So!

In conclusion, tankless toilets are the future of bathroom design, offering space-saving, eco-friendly, and stylish solutions for every homeowner.

Whether you’re looking for the best overall option, like the Duravit Wall-Mounted Starck 3 Tankless Toilet, or a high-end choice with advanced features, such as the TOTO MS992CUMFG01 Neorest Bathroom-Hardware, there’s a tankless toilet out there to suit your needs.

Say goodbye to bulky, water-wasting toilets and embrace the sleek, efficient world of tankless toilets.

Your bathroom, and the environment, will thank you.

Our #1 Recommendation: KOHLER K-6299-0 Veil Wall-Hung Elongated Toilet Bowl
  • Bowl Type: Elongated
  • Flush Type: Dual-flush (0.8/1.6 GPF)
  • Material: Vitreous china
  • Mounting: Wall-hung
  • Seat Included: Reveal Quiet-Close seat


Are tankless toilets better?

Tankless toilets offer several advantages, such as saving space, conserving water, and providing a modern aesthetic. However, they may not be suitable for every home due to their higher upfront costs and specific installation requirements .

What are the disadvantages of a tankless toilet?

Disadvantages of tankless toilets include higher upfront costs, potential plumbing alterations, the need for expert installation, and reliance on a strong power supply. Additionally, they may not function during power outages .

Do tankless toilets need power?

Most tankless toilets require electricity to operate, as they often use electric pumps or flushometers to provide the necessary water pressure for flushing .

Why buy a tankless toilet?

People buy tankless toilets for their space-saving design, water efficiency, modern aesthetic, adjustable height, reduced likelihood of leaks, and ease of cleaning .

What type of toilet is more efficient?

High-efficiency toilets, such as dual-flush and low-flow models, are more efficient than traditional toilets. They use water velocity instead of volume to remove waste, resulting in lower water consumption.

Are tankless toilets noisy?

Tankless toilets may produce some noise due to the electric pumps or flushometers used to generate water pressure. However, the noise level depends on the specific model and installation.

How do you flush a tankless toilet?

Tankless toilets are flushed using a flushometer or an electric pump that provides high-pressure water directly from the supply line to clear the bowl. The flush mechanism may be activated by a button, lever, or sensor, depending on the model.

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Steven Bosque

Dale Cogburn

Hi, I’m Dale Cogburn! I’m passionate about helping people get the most out of their bidets. I’m an expert on all things related to bidets, from installation and maintenance to product reviews. I’ve been using and researching bidets for over 10 years.

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