?Are you wondering whether the TOTO® WASHLET®+ Aquia IV® Cube Two-Piece Elongated Dual Flush 1.28 and 0.9 GPF Toilet with Auto Flush S7A Contemporary Bidet Seat, Cotton White – MW4364736CEMFGNA#01 is the bathroom upgrade you need?
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Product overview
You’ll find this model is a complete toilet-and-bidet-seat package that combines modern design with advanced hygiene features. It pairs a two-piece elongated bowl with a WASHLET+ bidet seat and several smart cleaning and water-saving technologies designed to make everyday use more comfortable and more sanitary.
What you get in the box
You receive the two-piece elongated toilet and a WASHLET+ bidet seat (S7A Contemporary Bidet Seat) with the unit, plus the necessary mounting hardware. The package is designed so the WASHLET water supply and power cord can be concealed for a seamless, integrated look.
Key specifications
You’ll want the headline specs at a glance to compare models quickly; the table below breaks them down for easy reference. This table highlights the main technical points you’ll care about when choosing or installing this model.
| Feature | Specification |
|---|---|
| Product name | TOTO® WASHLET®+ Aquia IV® Cube Two-Piece Elongated Dual Flush 1.28 and 0.9 GPF Toilet with Auto Flush S7A Contemporary Bidet Seat |
| Model number | MW4364736CEMFGNA#01 |
| Color | Cotton White |
| Toilet type | Two-piece, elongated |
| Flush system | Dual flush: 1.28 GPF (full), 0.9 GPF (partial) |
| Bidet seat model | S7A Contemporary WASHLET+ |
| Auto Flush | Hands-free automatic flush |
| Cleaning tech | EWATER+, PREMIST |
| Concealed connections | Yes — water supply and power cord can be concealed |
| Compatibility note | Designed to work seamlessly with T40 WASHLET+ bidet seat as well |
| Installation | Floor-mounted, standard rough-in (verify measurement before purchase) |
TOTO® WASHLET®+ Aquia IV® Cube Two-Piece Elongated Dual Flush 1.28 and 0.9 GPF Toilet with Auto Flush S7A Contemporary Bidet Seat, Cotton White - MW4364736CEMFGNA#01
Design and aesthetics
You’ll notice the Aquia IV Cube styling leans toward contemporary minimalism with clean lines and a boxier silhouette. The Cotton White finish keeps things bright and neutral so you can match a wide range of bathroom décors.
Materials and finish
The toilet is made with vitreous china and finished with TOTO’s high-quality glaze designed for durability and stain resistance. The WASHLET+ seat uses materials made for comfort and longevity; everything is intended to look and feel premium for years.
Integration of the WASHLET+ seat
The unit was designed with integration in mind so the water supply and power cord can be hidden for a clean appearance. You’ll appreciate the finished look because it keeps the technology discreet and the lines of your bathroom uninterrupted.
Flushing performance and water efficiency
You’ll find the dual-flush system gives you a purposeful balance between water savings and effective waste removal. The 1.28 GPF full flush provides confident performance, while the 0.9 GPF partial flush helps you conserve water for liquid waste.
How the dual flush feels in daily use
The full flush is engineered to clear the bowl reliably with fewer clogs and less double-flushing compared to low-performing models. The partial flush gives you a sensible option for light use, keeping your water bills lower without sacrificing cleanliness.
Water savings and environmental impact
By offering 1.28 and 0.9 GPF options, you’ll reduce water use relative to older 1.6 GPF toilets and get closer to modern efficiency standards. The combination of dual flush plus technologies like PREMIST and EWATER+ reduces the need for frequent chemical cleaning and excess water use in maintenance.
Bidet features: S7A Contemporary Bidet Seat functionality
You’ll experience a range of bidet functions designed to enhance hygiene and comfort, from warm water cleansing to adjustable spray patterns. The S7A Contemporary seat brings modern conveniences like heated seating and customizable wash settings to your routine.
Controls and adjustability
The S7A seat gives you multiple user adjustments, including water temperature, spray position, and pressure intensity so you can tailor every wash. Preset or memory functions (if included in your configuration) let you store preferences for different users, saving you time.
Comfort features
You’ll appreciate comfort features such as a heated seat, warm air dryer, and ergonomically shaped seating that make each visit more pleasant. These features are especially helpful in colder climates and for anyone who wants a more spa-like bathroom experience.
Cleaning and maintenance
You’ll spend less time on heavy cleaning because PREMIST and EWATER+ assist in keeping the bowl and wand cleaner between manual scrubs. The surface finishes resist stains and reduce bacterial buildup so routine cleaning is easier and more effective.
PREMIST and how it helps
PREMIST wets the bowl surface before each use to minimize waste adhesion and make removal easier. You’ll notice less sticking and typically a cleaner bowl after each flush, which reduces the need for aggressive scrubbing.
EWATER+ and reduced chemical use
EWATER+ mists the wand and the bowl with electrolyzed water, which has mild disinfectant properties and reduces reliance on harsh cleaning chemicals. You’ll benefit from fresher surfaces and a lower frequency of deep-cleaning procedures.
Auto Flush and smart operation
You’ll get a hands-free Auto Flush that activates after you stand up or when the seat senses usage, depending on settings. The hands-free operation improves hygiene and convenience while reducing the chance of forgetting to flush.
How reliable is Auto Flush?
Auto Flush is generally reliable for typical household use, but you should check sensitivity settings and placement to avoid accidental flushes or missed flushes. You’ll find some customization in the settings to fine-tune sensor behavior to match your bathroom layout.
Power and safety considerations
The Auto Flush and WASHLET functions require power, so you’ll need an outlet near the toilet. You’ll want to ensure electrical connections meet local code and are installed safely; many owners prefer a GFCI-protected outlet for safety in wet areas.
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Installation overview
You’ll find installing a two-piece toilet with a WASHLET seat straightforward if you’re comfortable with basic plumbing and light electrical work. Still, many people opt for a professional installation to ensure the concealed supply and electrical are handled correctly.
What you’ll need before starting
You should confirm your rough-in measurement, a nearby electrical outlet, and a water supply shutoff line. You’ll also want basic tools like a wrench, screwdriver, level, and possibly a drill if you’re concealing connections through cabinetry or the wall.
Installation steps at a glance
First, you’ll set the bowl and tank, ensuring a proper wax ring or gasket seal and secure tank mounting bolts. Next, you’ll mount the WASHLET seat, connect the water supply and electrical (or route them to concealment), and test all functions including Auto Flush, water heating, spray functions, and EWATER+.
User experience and ergonomics
You’ll likely find the elongated bowl more comfortable for most adults compared to round bowls, and the S7A seat is shaped for modern comfort. The adjustable features let you match the seat to your preferences, improving daily comfort and accessibility.
Seat comfort and height considerations
The S7A seat is designed to be comfortable for long use and has a heated function for cold mornings. If you have mobility issues, you’ll want to check seat height and potentially pair the toilet with an ADA-compliant seat-height option if necessary.
Noise and operation during use
You’ll notice occasional sounds from the bidet functions and Auto Flush; these are typically muted but present, especially when the motor or heating elements activate. In general, the operation is quieter than older, pump-heavy models.
Compatibility and upgrades
You’ll see claims that the unit is seamlessly designed to work with a T40 WASHLET+ bidet seat as well, which means you can potentially upgrade or replace the seat with a compatible WASHLET+ model. Always check TOTO’s compatibility and fit guidelines before purchasing replacement seats.
Future upgrades you might consider
You might want to upgrade to a different WASHLET+ model or integrate other smart bathroom accessories later on. You’ll be able to swap seats within the WASHLET+ line in many cases, but confirm mounting and electrical compatibility first.
Integration with bathroom layout
You’ll find this unit works best in bathrooms with standard rough-in spacing and an accessible outlet. If you want fully-hidden power and water lines, plan for routing during installation or consult a contractor to make the concealment clean and code-compliant.
Pros and cons
You’ll find a mix of strong positives and a few trade-offs with this model that are worth weighing before purchase. The list below is meant to be practical so you can match the product’s features to your needs.
| Pros | Cons |
|---|---|
| Hands-free Auto Flush improves hygiene | Requires nearby electrical outlet and possibly electrician for safe install |
| PREMIST and EWATER+ reduce cleaning effort and use of harsh chemicals | Higher upfront cost than basic toilets |
| Dual flush (1.28 / 0.9 GPF) saves water | May be more complex for DIY installers unfamiliar with bidet seats |
| Concealed water and power connectors produce a clean aesthetic | Replacement parts (if needed) can be more expensive than basic seats |
| Comfortable elongated bowl and heated, adjustable bidet seat | Some users could find sensor sensitivity needs fine-tuning |
Who should consider this model
You should consider this if you want a modern, hygienic, and water-efficient toilet that blends technology and comfort. It’s a particularly good fit if you appreciate features that reduce the need for harsh cleaning chemicals, want hands-free flushing, and value an integrated appearance.
Ideal users and household types
If you live in an urban apartment, a family home, or a master bathroom and you want an upgrade that focuses on comfort and sanitation, this model is a strong candidate. It’s also useful for people who prefer low-maintenance cleaning and enjoy adjustable bidet functionality.
Situations where you might pass
You might pass if you don’t have an electrical outlet near the toilet and prefer not to have any electrical work done. Also, if you’re on a tight budget or prefer a very simple fixture without electronic parts, a basic toilet might be a better fit.
Troubleshooting and maintenance tips
You’ll want to keep a simple maintenance routine and know a few quick fixes for common issues to prolong the life of the unit. The tips below address common questions about flushing, sensors, and cleaning.
Common issues and quick fixes
If the Auto Flush doesn’t trigger, first check power and sensor alignment, then consult the manual for sensitivity adjustments. If the bidet spray is weak, check the water supply valve to ensure it’s fully open and inspect filters or aerators for obstruction.
Routine maintenance you should perform
You should clean the wand and bowl regularly using mild cleaners compatible with EWATER+ and PREMIST; avoid abrasive cleaners that could damage surfaces. Periodically test EWATER+ function and clean any inlet filters according to the manual to maintain optimal performance.
Warranty and customer support
You’ll want to review TOTO’s warranty and support options because advanced electronic parts like the WASHLET seat may have specific coverage. TOTO usually offers strong customer support and parts availability, but you should confirm exact warranty language for electronics and the ceramic toilet portion.
What to expect from manufacturer support
You’ll typically get manufacturer guidance for part replacement, troubleshooting, and authorized service centers if needed. Keep your proof of purchase and model number (MW4364736CEMFGNA#01) handy to speed up support requests.
Extended warranties and service plans
You might consider an extended warranty or in-home service plan if you want extra coverage for electronic components. These plans can reduce worry about repair costs related to the WASHLET seat electronics over time.
Comparisons with similar products
You’ll find several competeing models from TOTO and other manufacturers that offer some similar features; comparing those will help you decide which trade-offs you prefer. Key differences often come down to seat model, flush performance, and price.
How this compares to basic toilets
Compared to a non-bidet, non-electronic toilet, this model delivers more hygiene features, better water efficiency, and more comfort at a higher price point. You’ll be paying for convenience and technology that a standard model won’t provide.
How this compares to premium integrated models
Against fully integrated one-piece models with built-in WASHLET functionality, you’ll find this two-piece offers easier replacement of parts and sometimes lower initial cost. However, one-piece integrated models can offer sleeker aesthetics and fewer seams to clean.
Cost and value considerations
You’ll pay more upfront for this smart toilet-and-seat combo compared to basic models, but you’ll get long-term value in water savings, reduced cleaning needs, and improved hygiene. Evaluate your budget against how much you value comfort, reduced chemical cleaning, and hands-free features.
Long-term operating costs
You’ll likely save on water bills over time due to dual-flush efficiency and reduced cleaning supply purchases thanks to PREMIST and EWATER+. Keep in mind electricity costs for seat heating and functions are usually modest but should be accounted for in long-term use.
Replacement parts and service costs
You’ll want to budget for potential replacement parts like the seat or sensors if something fails after the warranty period. Checking parts availability and pricing before purchase helps you avoid surprises later.
Final verdict
You’ll find the TOTO® WASHLET®+ Aquia IV® Cube Two-Piece Elongated Dual Flush 1.28 and 0.9 GPF Toilet with Auto Flush S7A Contemporary Bidet Seat, Cotton White – MW4364736CEMFGNA#01 is a strong choice if you want a modern, water-efficient toilet with advanced hygiene features. It’s especially well-suited to households that value comfort, reduced cleaning frequency, and a sleek, integrated appearance.
Recommendation summary
If you value hands-free features, tuning options for personal comfort, and technologies that reduce chemical cleaning, you should strongly consider this model. If you prefer the lowest possible upfront cost, have no convenient electrical access, or need a very simple fixture, you might choose a different, less complex toilet.
If you want, I can provide a quick checklist to use when measuring your bathroom for rough-in and electrical placement, or offer a short comparison to specific competing models you’re considering.
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