Most Popular Toilet Models Sold in 2026 (By Volume)

The Drake II holds the top spot on virtually every retailer sales ranking for residential two-piece toilets, and the published data backs up why: it earns a MaP score of 1,000 grams -- the maximum possible -- while using just 1.28 gallons per flush.

TOTO's G-Max flush system uses a wide 3-inch flush valve and a large trap diameter to move waste efficiently on 1.28 GPF. The Drake II's elongated bowl at comfort height (16.5 inches to the rim) is the configuration that accounts for the majority of its sales. TOTO's CeFiONtect glaze -- marketed as SanaGloss -- bonds at a molecular level to the vitreous china, reducing the surface area where waste and mineral deposits can cling.

Owner reviews consistently cite installation straightforwardness and long-term clog absence as the primary satisfaction drivers. Plumbers routinely specify this model for new-build projects and bathroom remodels because parts are stocked at most plumbing supply houses and the flush mechanism rarely requires service. For buyers who want to understand how it compares to its sibling, see the Drake vs Drake II comparison.

The Champion 4 has been a top-volume model at big-box home centers for over a decade, and 2026 is no different -- its 4-inch flush valve (the largest in residential gravity-flush toilets) and fully glazed 2-3/8-inch trapway produce a flush that rarely clogs even under heavy use.

American Standard's Champion 4 uses 1.6 GPF, which is above today's WaterSense threshold, and that is its main trade-off against more modern competitors. However, the raw power of its 4-inch flush valve and the fully glazed trapway mean it virtually never clogs -- a fact reflected in thousands of owner reviews and American Standard's own marketing around the "Never Clogs" guarantee. For households with high usage or frequent flushing of larger amounts of tissue, the extra water per flush is a practical trade-off.

Rental property owners and plumbers who prioritize zero service calls favor this model. The 10-year limited warranty on the china is among the longest in the residential segment. For a detailed breakdown of how it stacks up against a key rival, the Champion 4 vs Cadet 3 comparison covers the key differences.

The Kohler Cimarron is among the highest-reviewed toilets on the market and consistently appears in Kohler's top-three sellers by unit volume -- its AquaPiston flush technology and 1.28 GPF WaterSense certification have made it a go-to for remodelers and new-home buyers.

Kohler's AquaPiston canister replaces the traditional flapper with a piston-based mechanism that opens 360 degrees around its circumference, releasing water from all sides rather than just one. Kohler's own testing suggests this produces a 90-percent less exposed surface area compared to a standard 3-inch flapper, reducing a common source of slow-running or inefficient flushing. The Cimarron's 1.28 GPF usage and WaterSense label make it popular in drought-regulation states where older 3.5 GPF toilets must be replaced.

The Cimarron's popularity spike is also partly style-driven. Its elongated bowl and standard two-piece design fit most existing bathroom footprints with no modification. Kohler's wide dealer and parts network means replacement internals are easy to source. The Kohler Cimarron detailed review covers the AquaPiston in full depth.

The Woodbridge T-0001 has become the dominant one-piece elongated toilet in online retail, where its skirted trapway design and included soft-close seat undercut legacy brand pricing by a significant margin while still carrying EPA WaterSense certification at 1.28 GPF.

Woodbridge positioned the T-0001 as the entry point for consumers who want the look of a high-end European one-piece toilet without the premium price. The fully skirted trapway means no exposed S-bend to clean, a feature that typically appears only on toilets costing significantly more from legacy brands. The rectangular tank and clean lines fit the preferences driving bathroom renovation trends in 2026.

The included soft-close seat removes an additional purchase decision, which likely contributes to the T-0001's conversion rate online. It is not engineered to the same tolerances as TOTO or Kohler, and parts availability outside of Woodbridge's own supply chain is limited. But for buyers focused on first cost and aesthetics rather than long-term parts sourcing, it consistently rates highly. For detailed specs and owner feedback, the Woodbridge T-0001 full review goes deeper.

The Aquia IV is TOTO's top-selling dual-flush model, using 1.0 GPF for liquid waste and 1.28 GPF for solid waste while carrying WaterSense certification and a CeFiONtect glaze -- all in a contemporary two-piece package that ships with TOTO's DYNAMAX TORNADO FLUSH technology.

TOTO's TORNADO FLUSH system uses two nozzles to create a centrifugal water action around the bowl rather than relying on traditional rim holes. This eliminates the under-rim area where bacteria and mineral scale accumulate in conventionally flushed toilets. The Aquia IV's rimless design is easier to keep clean, which has become a selling point as more buyers research hygiene alongside water efficiency.

The dual-flush function means a household that flushes 10 times daily can use as little as 10.4 gallons per day if 70 percent of flushes are partial -- versus 12.8 gallons with a single-flush 1.28 GPF toilet. Over a year, that is a meaningful reduction in water bills in metered municipalities. For buyers choosing between this and the original Aquia, the UltraMax II vs Aquia IV comparison helps clarify the trade-offs.

The Cadet 3 FloWise is American Standard's WaterSense-certified answer to the Champion 4, using 1.28 GPF with a fully glazed EverClean surface and a siphon-action flush that achieves a respectable MaP score at a price point that makes it one of the bestselling toilets in the country.

American Standard's EverClean surface contains an antimicrobial agent that is built into the china glaze rather than applied as a separate coating. The company's published data indicates it inhibits the growth of stain and odor-causing bacteria, mold, and mildew on the surface. Combined with 1.28 GPF efficiency and availability in three rough-in sizes (10, 12, and 14 inches), the Cadet 3 FloWise covers more installation scenarios than most competitors.

The Cadet 3's lower price versus the Champion 4 and the TOTO Drake II makes it the top seller in the entry-level WaterSense segment at home centers. Plumbers use it frequently for apartment unit replacements where cost control matters. See the Champion 4 vs Cadet 3 guide for a head-to-head on flushing performance differences.

The TOTO UltraMax II combines the Drake II's proven G-Max flush system with a seamless one-piece body, delivering a 1,000-gram MaP score at 1.28 GPF in a format that eliminates the tank-to-bowl joint entirely -- making it the bestselling premium one-piece from a traditional North American plumbing brand.

The UltraMax II uses the same G-Max flush system as the Drake II but in a fully integrated one-piece body. Eliminating the tank-to-bowl seam removes a potential failure point and a difficult-to-clean joint. The one-piece form also creates a simpler visual profile that fits modern bathroom renovations more naturally than traditional two-piece designs.

The UltraMax II outsells most other premium one-piece toilets in the US, though it is priced above the Woodbridge T-0001 by a meaningful margin. Buyers choosing it are paying for TOTO's manufacturing quality, the CeFiONtect glaze, and the confidence of a well-established parts network. The best flushing toilets guide compares it to other high-performance options across form factors.

Gerber is a brand that rarely appears in consumer media but moves significant unit volume through the plumbing supply channel -- the Viper is its most-sold residential model, known for a 1.28 GPF WaterSense rating, a fully glazed trapway, and vitreous china construction built to commercial durability standards.

Gerber occupies an interesting market position: it is widely trusted by plumbers who order through supply houses but is largely invisible to consumers who discover toilets at big-box retailers. The Viper's internal components -- fill valve, flush valve, and flapper -- are specified to commercial-grade tolerances, which is why plumbers recommend it for high-use rental properties or households where durability matters more than aesthetics.

The Viper's WaterSense certification at 1.28 GPF meets modern water-efficiency requirements without the premium of TOTO's technology add-ons. If you are comparing Gerber to American Standard across the full lineup, the American Standard vs Gerber guide covers performance differences in detail.