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There's one place in your house where performance, quality, efficiency, and low flow water economy are appreciated. But everything, especially if it's made of moving parts, soon wears down or breaks off, needing replacing. So, when the shop attendant or plumber asks for it, how do you go about finding your Toto toilet model number?
Finding your Toto Toilet Model Number:
On the cistern or water tank of your Toto toilet, lift the lid and turn it over. There's a black ink stamp on the underside with ST or CST followed by three digits. The model number can also be on the walls of the vitreous China tank, most commonly on the back or right-hand wall. You'll also identify the color of your toilet with markings that begin with a hash or # followed by a two-digit color code.
It's essential to know your toilet's model so that you can get a part replaced or upgrade to a newer model. That's because not all parts will fit in each of Toto's toilet models. In this article, you'll learn how to identify your Toto toilet model number, which is also listed in the manual that came with it if you're the original buyer.
How to Identify Toto Toilet Model
Toto has some of the best toilet models on the market, offering consumers a wide range of options that include traditional, contemporary, and commercial styles. For many users, repairing the unit is far more desirable than replacing it with another model, and that's why identifying your Toto toilet model is essential.
With your Toto toilet model number, you can find tanks, gaskets, bowls, trip levers, bolt caps, and flush valves from various plumbing supplies retailers. Whether yours is a one-piece or two-piece toilet, here's how to find these details within your unit.
Lift the lid from your toilet tank, carefully turning it over. Handle the ceramic cover gently, as it is fragile and will break when dropped or knocked against a hard surface. Look on the underside of the lid or within the tank's walls for a black ink stamp.
These markings start with the letters ST, CST or MS, followed by numbers. If your Toto toilet model number isn't on the visible cover surface or upper tank surfaces, use a flashlight to look below the waterline.
How to Find Your Toto Toilet Model Number for a One-Piece Unit
Your Toto toilet model number for a one-piece unit will start with the letters MS, after which are six digits. These numbers end with 113 for the models with a round toilet bowl and 114 for elongated bowls. That's vital to note, especially if you're replacing the toilet seat, and you should focus on the three numbers between MS and 114 or 113.
If your one-piece Toto toilet model comes with a number E, it means yours is the Eco style that uses an E-max flushing system. To ensure you're buying the right part, take note of the product diagram or description since these toilets require specific parts, not those from standard units.
Finding Your Toto Toilet Model Number for a Two-Piece Unit
Your two-piece Toto toilet may have a model number that starts with E for the Eco unit. However, you'll likely find the stamp markings starting with ST followed by three digits. There are also other starting letters apart from E, such as R if yours has a right-handed lever. G is found where your bowl is finished with SanaGloss.
Two-piece toilets that end with S mean you're in a standard model rather than an Eco unit. These models use at least 1.6 GPF compared to the Eco unit that's more environmentally friendly and utilizes 1.28 GPF.
What If I Can’t Find My Toto Toilet Model Number?
Not finding any blank ink stamp markings on your Toto toilet model doesn't necessarily mean it’s counterfeit, although that's a possibility. Sometimes, human or machine error leaves a unit unmarked, and you'll have to perform a bit of extra legwork to find the matching replacement parts.
You can head over to totousa.com for a picture index that contains your toilet's model. Clicking on that will direct you to where you'll find the model's number, alongside the requisite replacement parts. However, you may still be unable to identify your unit so take a measuring tape, pen, and paper. Measure whatever part needs replacing, noting;
- Arm lengths for the trip lever
- Bottom to top measurements for flush and fill valves
- Diameter of the flush valve
Toto toilets use a flush valve with a 3-inch diameter, responsible for their water efficiency. That means there's a stronger flush where less water is dumped faster into the bowl. However, some older models use a 2-inch valve, while others have valves with counterbalance flappers.
These are distinctive looking, and you'll also need to note how they are installed. Some have threaded lock nuts, while others use square-like mounting hardware.
Conclusion
We now hope you can identify your Toto toilet model number, including its style and how many Gallons per Flush you've been utilizing. Certain lines have changed their names, but the ink markings remain the same, such as the Gwyneth one-piece now branded Ultramax II. When getting parts for your unit, refer to the model numbers and the color codes for a fluent match.
White is the standard color for Toto toilets, but that also comes in various hues, including colonial, satin, bone, ebony, and beige. Each toilet color has its model number, and sometimes, the lid markings don't match the ones in the tank or bowl. When you're looking for part schematics for your Toto toilet model, knowing your unit's style offhand often helps.