Discovering the Hidden Spot: My Expert Guide to Finding the Model Number on Your Toto Toilet
When I first embarked on my quest to find the perfect Toto toilet for my home, I quickly realized that understanding model numbers was essential to making an informed choice. Toto, renowned for its innovative designs and superior technology, offers a myriad of options, each with its own unique features and specifications. However, the challenge lies in locating the model number, which is often a small but crucial detail hidden within the intricate architecture of these stunning fixtures. In this article, I’ll share my insights and experiences on the importance of identifying the Toto toilet model number, guiding you through the often-overlooked aspects of this process. Whether you’re troubleshooting, seeking replacement parts, or simply wanting to know more about your toilet’s capabilities, knowing where to find the model number is your first step toward unlocking a world of comfort and convenience in your bathroom.
I Explored The Features Of The Toto Toilet Model Number Location And Share My Honest Recommendations Below

TOTO WASHLET A2 Electronic Bidet Toilet Seat with Heated Seat and SoftClose Lid, Elongated, Cotton White – SW300401

TOTO THU500S Replacement Flapper for Select 3 Inch Flush Valve Tanks, Red (1 Pack)
1. TOTO TSU99A.XR Fill Valve, Blue

When it comes to maintaining a well-functioning toilet, one of the most critical components is the fill valve. After researching various options, I came across the TOTO TSU99A.XR Fill Valve in blue, and I must say, it has impressed me with its features and functionality. This product is designed specifically for TOTO toilet tanks, making it a tailored solution for anyone who owns a TOTO toilet. If you’re like me and value efficiency and reliability in home fixtures, this fill valve stands out as an excellent choice.
One of the standout features of the TOTO TSU99A.XR is its adjustability for all TOTO toilet tanks. This flexibility means that regardless of the model of TOTO toilet you own, this fill valve can be adapted to fit perfectly. I appreciate how this design consideration saves me time and effort, as I don’t have to worry about compatibility issues. Instead, I can install it with confidence knowing it will work seamlessly with my toilet.
Another impressive aspect is the ability of this fill valve to reset my toilet tank back to optimal performance. Over time, toilet mechanisms can become less efficient, leading to wasted water and increased utility bills. By choosing the TOTO TSU99A.XR, I can restore the efficiency of my toilet, ensuring it fills quickly and quietly. This not only contributes to a more pleasant bathroom experience but also promotes sustainability by reducing water waste.
The package includes everything I need for a straightforward installation the valve, refill tube, clamp, cone washer, and nut. I find it incredibly convenient that TOTO provides all necessary components in one package, which eliminates the hassle of shopping for additional parts. This thoughtful inclusion allows me to complete the installation efficiently, even if I don’t consider myself a DIY expert. The standard 7/8 inch inlet connection makes it easy to fit into most plumbing setups, further simplifying the process.
the TOTO TSU99A.XR Fill Valve is a fantastic investment for anyone looking to improve their toilet’s performance. Its adjustability, restoration capabilities, and comprehensive installation components make it a compelling choice. If you want to enhance your toilet’s efficiency while saving on water costs, I highly recommend considering this product. It’s an upgrade that can make a noticeable difference in your daily life.
Feature Description Adjustable Fits all TOTO toilet tanks for easy compatibility. Performance Reset Restores optimal tank performance to save water and enhance efficiency. Complete Package Includes valve, refill tube, clamp, cone washer, and nut for easy installation. Standard Connection Features a standard 7/8 inch inlet connection for hassle-free setup.
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2. TOTO WASHLET A2 Electronic Bidet Toilet Seat with Heated Seat and SoftClose Lid, Elongated, Cotton White – SW300401

As I delve into the world of modern sanitation, I can’t help but be drawn to the TOTO WASHLET A2 Electronic Bidet Toilet Seat. This product is not just a toilet seat; it’s an innovative solution that promises to redefine the way we think about personal hygiene. With its impressive features, it caters to anyone seeking comfort, cleanliness, and a touch of luxury in their daily routine.
One of the standout features of the TOTO WASHLET A2 is its gentle yet powerful water spray. I find this particularly appealing because it allows for an effective clean without the harshness often associated with traditional toilet paper. The adjustable warm water and pressure settings ensure that I can customize my experience to suit my personal comfort level. Furthermore, the dual action spray with an oscillating option creates a refreshing clean every single time. This level of customization is something I didn’t know I needed until I experienced it.
The heated seat is another feature that elevates the TOTO WASHLET A2 to a new standard of luxury. I love the idea of stepping into a warm seat on a chilly morning. The adjustable heated bidet seat provides consistent warmth, making every visit to the bathroom a more comfortable experience. Plus, the SoftClose technology eliminates the annoyance of slamming lids, adding an extra layer of convenience to my daily routine.
Moreover, the self-cleaning wand is a game-changer. Knowing that the wand automatically cleans itself before and after each use provides me with peace of mind. The specially designed wand resin helps repel materials, ensuring that hygiene is maintained effortlessly. It’s a level of cleanliness that I can truly appreciate, especially in today’s world where health and hygiene are paramount.
Another feature that stands out to me is the convenient side panel. This allows users to easily control and set personalized water cleansing settings. I appreciate the thoughtfulness behind this design, as it puts luxury and cleanliness right at my fingertips. Every individual has unique needs, and TOTO has recognized this by allowing customization that enhances user experience.
With 50 million WASHLET users agreeing on the reliability and quality of TOTO electric bidet toilet seats, I feel confident in the brand’s reputation. The high-quality design not only promises long-lasting benefits but also ensures that I am making a wise investment in my home’s bathroom. Additionally, the easy, do-it-yourself installation means that I can set it up without the need for professional help, making it even more appealing.
the TOTO WASHLET A2 Electronic Bidet Toilet Seat is an exceptional product that combines comfort, cleanliness, and convenience. It’s more than just a toilet seat; it’s an upgrade to a luxurious standard of living that I believe many individuals can benefit from. If you’re on the fence about making this purchase, I encourage you to take the leap. The enhancements it can bring to your daily routine are worth every penny.
Feature Description Water Spray Gentle yet powerful with adjustable warm water and pressure settings. Heated Seat Consistent warmth coverage over the full seat surface. SoftClose Technology No more slamming lids; enhances convenience. Self-Cleaning Wand Automatically cleans before and after each use; specially designed resin repels materials. Convenient Side Panel Allows personalized water cleansing settings for maximum comfort. Trusted Brand 50 million users agree on the quality and reliability of TOTO products.
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3. TOTO THU500S Replacement Flapper for Select 3 Inch Flush Valve Tanks, Red (1 Pack)

When it comes to maintaining a fully functional and efficient toilet system, the TOTO THU500S Replacement Flapper is a standout choice. As a homeowner, I understand how essential it is to have reliable plumbing fixtures that work as they should. The TOTO THU500S is designed specifically for select 3-inch flush valve tanks, which makes it a perfect fit for those models. Its size ensures that it seals correctly, preventing any leaks and ensuring a powerful flush every time.
One of the standout features of this flapper is its construction. Made from a durable polypropylene body with a rubber sealing surface, the TOTO THU500S offers longevity and effectiveness. This material choice means that it can withstand the wear and tear of regular use without degrading. I appreciate that I won’t have to worry about replacing it frequently, which saves both time and money in the long run. Plus, the rubber sealing surface provides a tight seal, which is crucial for preventing water waste and maintaining efficient toilet operation.
The inclusion of a chain along with specific setup instructions tailored for TOTO tank models is another thoughtful feature. For someone like me, who isn’t a plumbing expert, having clear instructions can be a game-changer. I can easily follow the guidelines to ensure the flapper is installed correctly, and the chain ensures that it functions seamlessly with the flush mechanism. This level of user-friendliness is something I value highly, as it takes the guesswork out of the installation process.
Additionally, the eye-catching red color of the TOTO THU500S adds a touch of vibrancy to an otherwise utilitarian component. While the color might seem trivial, I find that it can actually be helpful during installation. It’s easier to identify and work with the flapper when it stands out, ensuring I don’t mistakenly confuse it with other components in the tank.
To summarize the advantages of the TOTO THU500S Replacement Flapper, I’ve compiled a quick reference table below
Feature Details Size 3 Inch Sealing Surface Material Polypropylene Body with Rubber Sealing Surface Additional Items Includes Chain & Setup Instructions Color Red
if you’re in need of a reliable replacement for your toilet flapper, I genuinely believe the TOTO THU500S is an excellent investment. It combines durability, ease of installation, and effective performance, all while being visually distinctive. Taking the step to replace an old or malfunctioning flapper can significantly enhance your toilet’s efficiency and save you money on water bills. I would highly recommend considering the TOTO THU500S for your next plumbing project. You won’t regret it!
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4. Toto TSU99A.X UNIVERSAL FILL VALVE ASSEMBLY, Unfinish

When I first came across the Toto TSU99A.X Universal Fill Valve Assembly, I was intrigued by the promise of improved toilet performance. As someone who values efficiency and reliability in home appliances, I knew that a well-functioning toilet is essential for a smooth daily routine. The features of this fill valve assembly immediately caught my attention, and I couldn’t help but see how it could positively impact my bathroom experience.
The adjustable height feature is particularly impressive. One of the common challenges I face with toilet maintenance is ensuring that the fill valve fits perfectly within different TOTO toilet tanks. This assembly is designed to accommodate various heights, making it a versatile solution for any TOTO toilet model. I appreciate that I can easily adjust it to suit my specific tank, which ultimately means I won’t have to worry about compatibility issues. This kind of flexibility is a huge plus for anyone who might be considering a DIY installation.
Moreover, the ability of the Toto TSU99A.X to reset my toilet tank back to optimal performance is a game-changer. Over time, I’ve noticed that my toilet does not refill as quickly or efficiently as it once did. The thought of restoring my toilet to peak functionality without calling a plumber is incredibly appealing. It’s reassuring to know that with this assembly, I can enhance the flushing power and efficiency of my toilet, which not only saves water but also ensures a cleaner and more pleasant bathroom experience.
The inclusion of essential components like the valve, refill tube, clamp, cone washer, and nut means that I have everything I need for installation right out of the box. This all-in-one package simplifies the process and makes it accessible for someone like me who enjoys tackling home improvement tasks on my own. The standard 7/8 inch inlet connection adds to the convenience, eliminating any need for additional adapters or parts. This thoughtful design is truly a testament to TOTO’s commitment to customer satisfaction.
As I consider the ease of installation, the efficiency gains, and the overall value of this product, I can’t help but feel a slight nudge to go ahead and make the purchase. The Toto TSU99A.X Universal Fill Valve Assembly not only promises to improve my toilet’s performance but also offers a stress-free DIY experience. For those of us who appreciate a well-functioning toilet but don’t want to deal with the hassle of complicated installations, this product seems like a perfect fit.
Feature Description Adjustable Height Fits all TOTO toilet tanks with adjustable settings. Optimal Performance Reset Restores toilet tank performance to factory settings. Complete Installation Kit Includes valve, refill tube, clamp, cone washer, and nut. Standard Inlet Connection Compatible with a standard 7/8 inch inlet connection. Easy DIY Installation Designed for straightforward installation without professional help.
if you are looking for a reliable solution to enhance your toilet’s efficiency and performance, the Toto TSU99A.X Universal Fill Valve Assembly is definitely worth considering. It combines practicality, ease of use, and essential features that can make a significant difference in your daily life. I feel confident that investing in this product will lead to a noticeable improvement in my bathroom experience, and I encourage you to explore it for yourself!
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Understanding the Importance of Toto Toilet Model Number Location
As someone who has experienced the frustration of dealing with toilet issues, I can’t emphasize enough how crucial it is to know where to find the model number on my Toto toilet. The model number serves as a key identifier, helping me quickly access the right parts and information when something goes wrong. For instance, if I notice that my toilet isn’t flushing properly, having the model number at my fingertips allows me to easily search for troubleshooting guides or replacement parts that are specifically compatible with my unit.
Moreover, understanding the location of the model number can save me time and money. Instead of wasting hours trying to describe my toilet to a plumber or customer service representative, I can simply provide them with the model number. This ensures that I receive the correct help without unnecessary delays. In my experience, having this information readily available has made repairs and maintenance much more straightforward, allowing me to avoid costly mistakes and ensuring that I keep my bathroom running smoothly.
In addition, knowing where to find the model number has been invaluable when it comes to warranty claims. If an issue arises that falls under warranty coverage, having the exact model number makes it easier for me to prove eligibility for repairs or replacements. This has given me peace
Toto Toilet Model Number Location: A Buying Guide
Understanding the Importance of the Model Number
When I first started my search for replacement parts or maintenance tips for my Toto toilet, I quickly realized how crucial it is to locate the model number. The model number helps identify the specific toilet model, making it easier to find compatible parts or service information. Knowing the exact model ensures I get the right fit without wasting time or money.
Where to Find the Model Number
In my experience, the model number for Toto toilets can typically be found in a few key locations. The first place I checked was on the toilet itself. I discovered that many Toto models have their model number printed on a label located inside the tank. To find this, I removed the tank lid and looked for a sticker or a stamped number on the back wall of the tank.
Another common location is underneath the toilet bowl. I found that some Toto toilets have the model number stamped into the ceramic, often near the base or on the underside. If I couldn’t find it there, I also checked the installation manual that came with my toilet. Many times, the model number is listed on the first few pages of the manual.
What to Do If You Can’t Find the Model Number
If, like me, you’re having difficulty locating the model number, there are a few alternatives. I recommend checking the Toto website or contacting their customer service for assistance. They can often help identify the model based on a description or pictures. Additionally, I found online forums and communities where fellow Toto toilet owners shared tips on identifying various models.
Tips for Keeping Track of Model Numbers
After successfully locating my Toto toilet’s model number, I realized how important it is to keep track of it for future reference. I took a moment to jot it down in my home maintenance notebook along with any relevant installation or warranty information. This way, I can easily access it whenever I need to order parts or schedule repairs.
: A Simple Step for a Smooth Experience
finding the model number on my Toto toilet was a straightforward process that saved me time and effort later on. By checking inside the tank, under the bowl, and in the installation manual, I was able to locate it without much hassle. Keeping track of this information is invaluable for any future maintenance needs. I hope this guide helps you in your search for your Toto toilet model number, making your experience as smooth as possible.
Author Profile

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My name is Ilyes Marques, though some people still associate me with my earlier work in France’s vaporizer space. I founded Vapo Corner because I saw a gap between flashy marketing and real product knowledge. Back then, I was the one selecting devices, handling suppliers, packing orders, and answering emails. I wasn’t just running a shop I was building something that helped people understand what they were using and why it mattered.
In 2025, I took that mindset in a new direction. I started writing. Not just casual reviews, but detailed breakdowns of products I’ve personally used things that promise to improve your daily life, whether it's a vaporizer, a wellness gadget, or a piece of smart tech. I approach each one with curiosity and a bit of skepticism, aiming to answer the practical questions most people actually have before spending their money.
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