Best Two Button Flush Toilets: Dual Mode Water Saver

The Aquia IV is TOTO's flagship dual-flush two-piece, and its combination of certified efficiency, strong full-flush performance, and CeFiONtect ionic barrier glaze makes it the most consistently recommended two-button toilet across plumbing forums, consumer review aggregators, and independent flush-test databases.

The Aquia IV uses a TOTO WASHLET+ ready design so you can add a compatible bidet seat later without exposed hoses. Owner reviews on major retailers consistently rate flushing reliability at 4.7 or higher, with the most frequent praise directed at the complete absence of double-flushing events even with solid waste.

The 0.8 GPF half-flush is genuinely effective for liquid-only loads, which is where most dual-flush toilets disappoint. The combination of a well-engineered tower valve and a steep bowl angle means even partial-volume flushes clear the bowl cleanly. Maintenance is limited to occasional tower valve cartridge checks; no flapper to replace.

The Woodbridge T-0001 consistently earns praise as the best sub-premium two-button toilet: a fully skirted one-piece profile, 1.0/1.6 GPF dual-flush, and a soft-close seat bundled in the box make it exceptional value relative to its purchase cost.

Owner reviews note the T-0001's ceramic is heavier than expected for the price tier, and the tower flush valve has proven durable across three-plus years of reported use in high-frequency households. The skirted exterior means cleaning is reduced to a quick wipe rather than navigating an exposed trapway.

The 1.0 GPF half-flush handles most liquid-waste loads without streaking. A subset of owners reports the occasional half-flush residue streak on the rear of the bowl, suggesting a slight bowl geometry limitation compared with TOTO, but it is infrequent and addressed by the 1.6 GPF full button on demand. For related options in this style, see our best dual flush toilets guide.

American Standard's H2Option brings the brand's proven VorMax-derived trapway engineering to a dual-flush package with a 1.0/0.5 GPF split that is among the most aggressive water-saving configurations sold in the U.S. residential market.

American Standard's EverClean surface treatment is a real differentiator: independent lab tests show it suppresses bacteria growth on the vitreous china surface for the life of the toilet, reducing both cleaning frequency and odor between deep cleans. The trapway at 2-3/8 inches is among the widest in this category.

The H2Option's 0.5 GPF partial flush is impressive on paper but requires reasonable water pressure to be fully effective. Homes with supply pressure below 20 PSI may occasionally see a second half-flush needed. In households with normal city pressure, the partial flush clears liquid waste completely. Compare this option with our best American Standard toilets roundup for more context.

The Drake II is TOTO's heritage workhorse, and the dual-flush variant pairs the same proven TORNADO FLUSH bowl technology with a 1.28/0.9 GPF dual-flush actuator, landing it in the EPA WaterSense bracket while retaining the Drake line's legendary clog-free reputation.

The Drake II's rimless bowl design is a genuine maintenance advantage: traditional rim jets accumulate mineral scale over time and gradually reduce flush power. TOTO's rimless approach uses two angled nozzles at the back of the bowl to create a swirling water pattern that covers the full bowl interior without any jets to descale.

Owner satisfaction with the Drake II dual flush is consistently high, though a small subset of reviews mention the 0.9 GPF partial flush occasionally requires a second press when there is significant paper. This is a known trait of the slightly lower partial-flush volume -- the Aquia IV at 0.8 GPF handles it better due to bowl geometry differences. For more context on this model family, see our TOTO Drake series guide.

Swiss Madison's St. Tropez brings a distinctly European-inspired skirted profile and chrome push-button actuator to an accessible price point, with a 1.1/1.6 GPF dual-flush system and a fully skirted trapway that wipes clean in seconds.

The St. Tropez consistently earns strong reviews from buyers prioritizing aesthetics. Verified owner feedback highlights the solid chrome actuator button and the absence of any visible trapway as the top reasons for purchase satisfaction. Flush performance for day-to-day use is described as reliable and quiet.

Swiss Madison toilets are generally distributed through online retail and some home improvement chains. The limited parts network is the main trade-off versus heritage brands, but the tower flush valve in the St. Tropez is a standard metric-thread cartridge style compatible with aftermarket suppliers. For a broader category view, our Swiss Madison toilets guide covers all current models.

Gerber's Avalanche dual-flush brings the brand's reliable porcelain quality and 2-3/8-inch fully glazed trapway to a 0.8/1.28 GPF configuration, making it a dependable pick for septic households that want strong full-flush performance without excessive tank loading.

Gerber is less familiar to many homeowners than TOTO or Kohler, but the brand is a preferred specification among commercial plumbing contractors in the Mid-Atlantic and Southeast U.S. Its lifetime limited china warranty is a genuine differentiator: if the vitreous china cracks from a manufacturing defect, Gerber replaces it at no cost.

The Avalanche's 1.28 GPF full flush and wide trapway combination makes it resistant to clogging even in households with large-family usage. The 0.8 GPF partial flush reduces septic system water loading meaningfully over daily use. For full Gerber brand context, see our best Gerber toilets overview.

Kohler's Cimarron Comfort Height dual-flush uses a 1.28/0.8 GPF actuator paired with the Cimarron's class-five flushing technology and a bowl height of 16.5 inches from the floor to the rim, putting it at wheelchair-accessible ADA height with full dual-flush efficiency.

The Kohler Cimarron has one of the largest installed bases of any toilet in North America, which translates to abundant owner data. Aggregated reviews on major retail platforms rate the dual-flush Cimarron above 4.4 stars across thousands of reviews, with seat comfort and flushing reliability as the two most cited positives.

Kohler's Class Five flush technology channels water into the bowl through a larger, faster rush rather than a sustained flow, achieving effective bulk removal at 1.28 GPF without needing a pressure-assist mechanism. The 0.8 GPF partial flush adequately handles liquid waste in the majority of owner-reported use cases.

American Standard's Champion 4 platform is the brand's most clog-resistant line, and the dual-flush variant adds a 1.0/1.6 GPF push-button actuator to the Champion 4's famously large 4-inch flush valve and 2-3/8-inch trapway, making it the most aggressive clog-fighting two-button toilet available.

The Champion 4's 4-inch flush valve is the core specification that sets it apart. Standard toilets use a 2-inch or 3-inch flush valve; the Champion 4's oversized valve releases water faster into the bowl, creating a surge that overcomes resistance that would stop a standard-speed flush. The dual-flush actuator on this platform controls the same large valve but limits the tank drain volume on the partial press.

This is the best option for households with older pipes in aging homes, heavy family use, or a documented history of clogs. The trade-off is that the 1.6 GPF full flush volume is the least efficient on this list, though the dual-flush mechanism still reduces overall water use when the partial flush is used appropriately for liquid waste.