TOTO Brand Guide: Every Series, Model and Tech Explained

The Drake II is TOTO's best-selling model for good reason: its Double Cyclone flush hits a 1,000-gram MaP score at 1.28 GPF, the CeFiONtect glaze keeps the bowl cleaner between scrubs, and the two-piece construction makes parts more accessible for DIY repair over a 20-year lifespan.

The Drake II is a direct evolution of the original Drake, the toilet that established TOTO's reputation in the North American market. The Double Cyclone system replaced the rim-hole design entirely, using two pressurized jets to scrub the bowl while generating the siphon. Owners note that the flush is noticeably quieter than older gravity designs, and the 12-inch rough-in works in virtually all standard bathroom configurations.

For comparison, the Kohler Cimarron at a similar price point scores 800 grams in MaP testing and uses a conventional rim channel. The American Standard Cadet 3 closes that gap somewhat at 800+ grams but does not include CeFiONtect-equivalent glaze. At the Drake II's price tier, no direct competitor matches the combination of MaP score, glaze quality, and brand reliability.

The UltraMax II upgrades TOTO's flagship technology to a seamless one-piece body with a fully skirted trapway, combining the maximum 1,000-gram MaP score with Tornado Flush and CeFiONtect glaze in a design that eliminates the seam and exposed trapway where grime collects on two-piece models.

The Tornado Flush system in the UltraMax II uses three directional rim jets rather than two, creating a centrifugal vortex that covers more of the bowl surface per flush. This is measurable: independent cleaning assessments consistently show the Tornado Flush leaving less residue than the Double Cyclone after simulated high-use cycles. In master bathrooms or households where minimizing cleaning frequency is a priority, that difference matters.

Compared to the Woodbridge T-0001 or Swiss Madison Ivy at similar one-piece price points, the UltraMax II carries a notably higher MaP score and TOTO's superior warranty support network. The Woodbridge T-0001 offers a clean modern profile and reasonable flush performance, but does not reach 1,000 grams in MaP testing. For anyone comparing best flushing one-piece toilets, the UltraMax II occupies a clear performance tier above most competitors at its price range.

The Aquia IV is TOTO's most water-efficient residential toilet, offering a 1.0 GPF full flush and a 0.8 GPF partial flush via a dual-flush push button -- earning it qualification under California's strict CEC standards and EPA WaterSense dual-flush requirements that exceed the standard 1.28 GPF threshold.

The Aquia IV is the fourth generation of TOTO's dual-flush platform and the first to pair Tornado Flush with the 0.8/1.0 GPF configuration. Earlier generations used a more conventional flush mechanism that struggled to clear heavy waste at such low water volumes; the Tornado Flush system largely resolves that by maximizing hydraulic energy per gallon. Households in California, Colorado, or other water-restricted states should note that the Aquia IV often qualifies for water authority rebate programs that offset part of the purchase cost.

The trade-off versus the Drake II is explicit: you gain approximately 0.48 GPF per full flush cycle, translating to roughly 5,000 gallons per year for a family of four versus a 1.28 GPF toilet. That is meaningful in high-rate water markets. You accept a slightly lower MaP ceiling, which in practice matters only in households with consistently heavy waste loads. For most household use patterns, the Aquia IV's 800-gram full flush score is more than adequate.

The Entrada is TOTO's entry point for buyers who want the brand's manufacturing consistency and WaterSense certification without paying for CeFiONtect glaze or advanced flush technology -- using the E-Max 1.28 GPF single flush system in a compact round-bowl format.

The Entrada occupies a competitive slot against the Kohler Wellworth and American Standard Cadet 3 in the entry-level category. Its advantages over those competitors are modest at the specification level -- all three share similar MaP scores and GPF ratings. Where the Entrada earns its place is in TOTO's production consistency: parts fit precisely, the ceramic quality is reliable, and the flush mechanism components are TOTO-standard rather than generic imports that vary by production batch.

For rental property owners who want a dependable toilet that will not require repeated service calls, the Entrada is a reasonable choice. Buyers who can stretch their budget should consider the Drake II, where the Double Cyclone system and CeFiONtect glaze deliver a genuinely higher tier of performance for the additional investment.

The Neorest 750H is TOTO's flagship integrated smart toilet, combining a tankless Tornado Flush system, ewater+ electrolyzed water self-cleaning, auto open/close lid, heated seat, front and rear WASHLET bidet wash, warm air dryer, and deodorizer into a single skirted unit.

The 750H's lower MaP score compared to the Drake II and UltraMax II is not a performance failure -- it reflects the tankless pressure system's fundamentally different operating principle. Tankless toilets draw directly from the supply line rather than accumulating stored volume, which changes the hydraulic profile of the flush. For most residential use patterns, the Neorest 750H's cleaning performance is more than adequate; the self-cleaning ewater+ system means the bowl rarely develops the buildup that makes MaP score such a priority in conventional toilets.

The ewater+ system deserves specific attention: after each flush, the unit mists the bowl with weakly acidic electrolyzed water, which is a mild antimicrobial agent that reduces bacterial adhesion on the ceramic surface. TOTO's internal testing data indicates this reduces bowl bacteria counts significantly compared to no-treatment baselines. For households with immunocompromised members or strong hygiene priorities, this feature has genuine value beyond the premium experience.

The Vespin II combines a fully skirted trapway -- eliminating the exposed pipe curves that collect dust and grime -- with the two-piece construction that makes internal components easier to access and replace, offering a middle path between the Drake II's serviceability and the UltraMax II's clean lines.

The Vespin II's skirted two-piece architecture solves a real installation problem: one-piece toilets are significantly heavier and awkward for a single person to carry up stairs or position precisely. The Vespin II allows the tank and bowl to be transported and installed separately, then mated together, making it genuinely DIY-accessible in a way that the UltraMax II is not for most homeowners.

The Tornado Flush system in the Vespin II is the same generation as the UltraMax II, and its 1,000-gram MaP score confirms equal performance output. The skirted base is fully sealed and looks visually similar to a one-piece toilet from a standing viewing angle, which addresses the aesthetic concern without the weight and handling penalty. For buyers comparing this to best flushing skirted toilets across all brands, the Vespin II consistently ranks near the top.

The round-bowl Drake is 2 inches shorter front-to-back than the elongated Drake II, making it the right TOTO choice when projection space is limited, while retaining G-Max 1.6 GPF flush technology with proven reliability in the original Drake lineage.

The original Drake platform pre-dates TOTO's Double Cyclone redesign and uses the G-Max 1.6 GPF system with a 3-inch flush valve and large 2.125-inch trapway. For buyers in jurisdictions without 1.28 GPF mandates who prioritize flush certainty in a half-bath, the G-Max Drake is still a sensible choice with a long reliability track record. It does not carry WaterSense certification at 1.6 GPF, which buyers in California and other regulated states must verify against local code.

The round bowl format is primarily a space decision, not an aesthetic one -- elongated bowls are generally more comfortable for adults, while round bowls better fit bathrooms where the toilet-to-door clearance is under 30 inches from the bowl front. Anyone researching best flushing round toilets will find the Drake round bowl consistently cited as the performance leader in that category.