Toto G400 Review 2024 [Washlet with Integrated Toilet]

Recently, there has been a lot of talk about the Toto washlet toilets. Many homeowners are upgrading their homes with these fantastic and futuristic smart toilets. The Toto washlet with integrated toilet series has a lot of benefits to the users, and that’s why many people are starting to embrace them.
Today, we’re going to discuss Toto G400 with an integrated toilet. It is the upgraded toilet of the Toto G500. After changing my Toto Drake II with the Toto washlet G400 integrated bidet toilet, I decided to share my honest opinion about this modern toilet. So, brace yourself as I take you through the features, functions, pros, and cons of the Toto G400 toilet. Detail of the Toto G400 review-

Related Comparison Article: Toto G400 VS G500

The Toto G400 integrated toilet is compact and great for small spaces. Installing a toilet is quite challenging, but Toto G400 installation is very easy, and you don’t need to call a professional plumber to fix it for you. The toilet utilizes less than 1.28 gallons of water per flush, so it is a high-efficiency toilet. As sleek and beautiful as the toilet looks, it is comfortable to use, and most functions are automatically performed by just pressing the remote control. Here is a full review of the Toto washlet G400 toilet.

Technical Specifications of the Toto G400 Toilet

Luxurious Features

Toto Washlet G400 Toilet

Water Consumption:1.28 GPF/0.9 GPF
Pieces:One-Piece toilet
Dual flush:Yes
Flushing System:3D Tornado Flush
Glaze:Yes(CeFiONtect ceramic)
Remote control operation:Yes(Front wash and rear warm water cleanse+ Temperature and adjustable pressure control)
Heated Seat Option:Yes(Heated seat with adjustable temperature control)
Auto open/close lid:Yes
Automatic PreMist sprays:Yes (it helps prevent solid waste from adhering)
Air Deodorizer:Yes
Power Centrifugal Rinsing Action:Yes
Dryer function:Yes
User memory:Yes(2 Users)
Color:Cotton White
Certification:ADA compliant, WaterSense certified, CAL Green compliant
Wand cleaning mode:Yes(self-cleaning)
Integrated Sensor Seat:Yes
Power Source:corded-electric
Size:Large – LTL
Weight:100 pounds
Dimensions:28.6 x 11.6 x 26.9 inches
Price:Toto G400 ReviewCheck Today’s Price

Page Contents

Washlet Integrated Toilet Toto G400 Review in 2024

The Toto washlet G400 integrated dual flush toilet is a sleek and stylish toilet that will change the look of your bathroom. The toilet is very convenient to use as even the sick and old people will have an easy time using the remote.

Dual Flush System is Eco-Friendly & Money-Saving

The toilet features dual-max, double flush with 1.28 GPF for a full flush and 0.9 GPF for a partial flush. This helps to save on water and make the toilet environmentally friendly. It also has PreMist technology that joins together with the comfort and convenience of Toto’s bidet seats with a powerful 3D tornado flush technology to offer the user a great experience.

Expensive but Luxurious Unit

Using this toilet is one of the best experiences that you will have. As you approach the washlet, the lid opens automatically to welcome you. Then, the automatic PreMist sprays the toilet bowl surface. The combination of CeFiONtect and PreMist helps to reduce the number of times you have to clean. This, in turn, also reduces the use of harsh chemicals, the amount of water, and the time needed to clean the toilet. The CeFiONtect ceramic glaze and Premist function play a huge role in keeping the toilet clean by preventing waste from sticking to the bowl surface.

You can set the seat-warming temperature

After sitting on the toilet, you will feel the warmth of the heated toilet. During the cold months, you’ve got the option of selecting from one of the five seat-warming temperature settings. So, no more cold toilet seats during the winter. At the same time, the automatic air deodorizer will be activated to hide the odor. When you’re almost done, you will have to grab the remote control and commence the cleansing procedure.

Related Article: Toto Neorest 700H Reviews [Luxurious Toilet]

Self-cleaning system is totally hands-free

It all starts with the self-cleaning wand, which will clean your nether area. Choose the type of cleansing that you want. It can be a rear cleanse, front cleanse, oscillating cleanse, soft rear cleanse, or pulsating cleanse. Next, you should adjust the warmth and intensity of the spray by accessing the variable temperature and pressure settings on the remote. The best part is that the toilet allows only two settings to be saved, as it has a memory feature. So, you can just save your preference and press it whenever you access the toilet.
Toto Washlet G400Check Price

Automatic Dual Max Flush

When you’re done, you can as well start the warm air dryer to reduce the moisture on the toilet by choosing from the five temperature settings. As soon as you stand from the toilet, the automatic dual-max automatic flush will determine the ideal flush volume for your waste. Then, the powerful flushing of the 3D tornado flush with the help of CeFiONtect glaze ensures that the contents in the toilet are cleared and remain clean. And finally, the lid will close slowly.

With the washlet, you don’t need to use tissue paper, and this ends up saving trees and water and reducing the chemicals being released into the environment.

Why Buy a Toto G400 Washlet Toilet?

  • It is very convenient to use as it is a dual-flush toilet for your modern bathroom.
  • Eco-friendly toilet as it uses less than 1.28 gallons per flush
  • Powerful flushing of the 3D tornado flush clears waste in the toilet bowl at once
  • Cleaning time is reduced with the combination of Premist and CeFiONtect technology
  • It has a universal height, so using the toilet is comfortable
  • The skirted design makes cleaning outside to be a breeze
  • It is a hands-free operation as the seat automatically flushes on your departure
  • No need to use toilet paper as it has a cleansing function
  • The seats are heated and great when it is cold or in the winter season
  • The lid opens and closes automatically
  • This washlet bidet seat toilet features five settings for water pressure that allows you to set the warmth and intensity of the spray


  • The toilet is quite expensive
  • Installing the washlet may be quite challenging, and you may need the services of a plumber.
  • The washlet bidet Toto seat needs electricity to work, so your power bill will increase.

How to install a Toto G400 Washlet toilet? (Full video)

Toto Washlet G400 Troubleshooting

  • Water leaks

First, turn off the shutoff valve. Now check if any nuts are loose or not. Tighten all the nuts with a monkey wrench. If it leaks from the bottom, call a plumber.

  • Why is my Toto G400 toilet not flushing?

Check if the shutoff valve is fully open or if there is a power outage. You can use a bucket to flush it manually.

  • Why does the Toto G400 flush automatically?

Ensure “Auto-Flush” is off and clean dirt from the body sensor. Don’t lift the hips or sit forward from the seat.

  • Why is my remote control display turned off?

If the remote control is not operational within 5 minutes, the display will automatically go out to save the battery.

  • Toilet Tank refills slowly

Either your shutoff valve is fully opened, or the filter may be clogged.

Final Thoughts

The Toto washlet G400 integrated toilet will change your whole toilet experience and make things easy for you. It won’t matter if it’s the cold winter or hot summer; you will still visit your toilet without being afraid of the cold toilet seat.

The G400 washlet offers great comfort and hands-free operation. The self-cleaning wand ensures that you don’t use any tissue as it washes your nether region. Additionally, the deodorizer leaves the toilet smelling fresh after use, and the skirted design is easy to clean.

With such amazing features and functions, this is a great investment for a home that wants to save on the water bill and bring a new experience into the bathroom. I hope you have gotten all answers after reading this Toto G400 review.


Question: Is this toilet eco-friendly?
Answer: Yes, it is. The Toto G400 washlet is one of the most environmentally friendly toilets that you will come across. To start with, the toilet is WaterSense certified; thus, it uses little water. It has a dual flush mechanism that allows the user to utilize only 1.28 GPF for a full flush and 0.9 GPF for a partial flush. In addition, you don’t have to use tissue paper as the toilet has a self-cleaning wand that appears to wash your nether regions. This ends up saving water and trees used in the manufacture of toilet paper. Also, no chemicals will be released into the water when no toilet paper is manufactured. That’s why every person should embrace this toilet.

Question: Do I have to buy other accessories for a complete installation?
Answer: When you purchase this toilet, you have to know that some installation hardware is not included, such as floor bolts and wax rings. This is normal, as many toilets don’t come with this hardware. For more info concerning the Toto g400 installation, refer to the user manual.

Question: Which has the higher rating? Toto G400 or Toto G500?
Answer: Toto’s G500 toilet has a slightly better rating than Toto’s G400 toilet.

Still, have a question after reading this Toto washlet G400 review? Comment below.

Hi, this is Robert Crossan, the owner of this website, has 17 years of experience in the installation, maintenance, and repair of toilets and plumbing systems. After completing the Level 2 Basic Plumbing course in 2005, I started working in both domestic and commercial buildings as a professional plumber. So I can figure out the core difference between different toilet models and brands. It also helped me monitor their work performance and setbacks.


  1. We have the Toto G400 washlet Has anyone had a problem with the forward spray not spraying forward enough? Is there adjustments?

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