Best Dual Flush Toilets of 2026: Water Saving Picks

The Aquia IV is the dual flush toilet to recommend first because it ties the lowest widely available partial flush to a Tornado-powered full flush that reaches the maximum MaP score, all inside a clean skirted two-piece body from the brand that defines flush consistency.

The Dynamax Tornado flush feeds water through two angled nozzles that create a swirling bowl rinse rather than a front-dropping waterfall. That centrifugal action lets 1.28 gallons reach the maximum 1000 gram MaP score on the full push while the 0.8 gallon partial flush is at the bottom of what is commercially available. Because a typical household presses the small button far more than the large one, the math on annual water savings is real, and the full flush never leaves you second-guessing whether it cleared.

Owners consistently describe single-push solid clearing, quiet refill, and no running-toilet complaints linked to the valve. The fully skirted body eliminates the exposed trapway crease that traps grime on traditional two-piece designs. TOTO's CeFiONtect ion-barrier glaze adds surface resistance to mineral and waste adhesion. The main criticism across reviews is the learning curve of the top-mounted push button for first-time guests, but the mechanism itself is mechanically reliable in multi-year ownership reports.

The H2Option is for households that want dual flush water savings with a seat already in the box and a chair-height bowl closer to a standard toilet, posting a 600 gram MaP score at 1.28 GPF that clears typical household loads, though it does not match the 1000 gram ceiling of the Aquia IV and Cimarron Dual Flush in this roundup.

American Standard's VorMax technology uses a specifically angled jet to direct water around the full rim of the bowl before the siphon draws it down, and the H2Option achieves a 600 gram MaP full-flush rating at 1.28 rather than 1.6 GPF, enough to clear typical household loads without matching the 1000 gram score of models like the TOTO Aquia IV and the Kohler Cimarron Dual Flush. The 0.92 gallon partial flush is slightly above the 0.8 minimum of the top tier, but the included seat and lower chair-height bowl are the more meaningful trade-offs for families choosing this model.

Owner reports emphasize the reliable single-pass solid clearing, a quiet flush cycle, and the five-year limited warranty, which is longer than most competitors in the dual flush category. The two-piece construction is conventional to install and repair. The VorMax bowl design cleans better under the rim than a standard rim-wash geometry, reducing the visible buildup that gathers in corners.

The Woodbridge T-0019 delivers a 1000 gram MaP full flush score and a clean skirted elongated one-piece design at a price well below comparable TOTO or Kohler options, making it the strongest-flushing skirted dual flush toilet per dollar in this roundup.

The T-0019 is Woodbridge's top dual flush model and its siphon jet achieves a 1000 gram MaP score on the full push, clearing heavy loads cleanly in a single flush. The 1.0 gallon partial flush is higher than the TOTO Aquia IV's 0.8 minimum, but the full flush power more than compensates, particularly for households that use both buttons regularly. The fully skirted one-piece body is a genuine advantage: there is no tank-to-bowl seam, no exposed trapway crease, and no secondary bolts to re-tighten over time.

The soft-close toilet seat is included, which reduces the upfront package cost compared to brands that sell the seat separately. Owner reviews note the flush mechanism is robust and the push button plate is firm rather than mushy. The main limitation is the 1.0 partial flush volume: buyers wanting the absolute lowest liquid-mode water use should choose the Aquia IV instead. If your priority is easy cleaning and strong full-flush power at a mid-range price, the T-0019 delivers both. For more on this brand's lineup, see our roundup of the best toilets for home use.

The Kohler Cimarron Dual Flush brings EPA WaterSense certification, a reliable Class Five flush system, and Kohler's extensive replacement parts network into a two-piece dual flush design at a price that undercuts most premium picks significantly.

The Cimarron Dual Flush uses Kohler's Class Five flush system, which moves water at high velocity through a large 3-inch flush valve to pull bowl contents down by siphon action. The MaP full-flush score reaches the maximum 1000 grams, and consistent owner feedback notes reliable single-pass clearing for normal household waste. The 0.8 gallon partial flush matches the lowest available in this category. WaterSense certification confirms that the combined flushing average falls within EPA efficiency thresholds.

Kohler's wide retail and parts distribution is a meaningful practical advantage: flappers, fill valves, and seats are available at hardware chains everywhere, and the Cimarron design has been in production long enough to have a well-documented owner record across multiple years. This is a strong choice for rental properties, guest bathrooms, and anyone who prefers a straightforward two-piece with a familiar brand behind it. Owners considering related options can also browse our guide to the best toilets of 2026.

The Swiss Madison St. Tropez is the dual flush choice for buyers who want a low-profile, clean-line skirted one-piece aesthetic at a price below the premium Japanese brands, while still hitting 0.8 gallon partial flush efficiency and a 600 gram MaP full-flush score.

The St. Tropez has a contemporary silhouette with straight sides, a concealed trapway, and a flush button plate integrated cleanly into the top of the tank. The 0.8 gallon partial flush ties the Aquia IV for the lowest light-mode volume in this roundup, and the 600 gram MaP full-flush score meets the minimum threshold we required of all picks. Soft-close seat and supply line are included, which reduces the total package cost compared to brands that sell components separately.

Owner reviews emphasize the visual appeal and the straightforward installation, with most noting the flush is quiet and the refill is fast. The most common critical note is about the flush mechanism seal quality: a small subset of owners across review aggregators report a running toilet within the first year, which is the most common risk with dual flush valves generally. Swiss Madison has addressed this in more recent production runs, and the 1-year warranty covers mechanical defects. For buyers comfortable doing occasional minor adjustments, the design and water savings are strong arguments in its favor.

The Gerber Avalanche Dual Flush is a sturdy, no-frills two-piece with an 800 gram MaP full-flush score and a 1.0 gallon partial flush, built to the commercial-grade standard that makes Gerber a consistent choice for plumbers and rental property operators who prioritize reliability over styling.

Gerber's reputation in the trades rests on durability and simple mechanicals that are easy to diagnose and repair. The Avalanche Dual Flush continues that pattern: its internal components are standard and serviceable, the vitreous china body is thick-walled, and the 10-year limited warranty is the longest in this roundup by a significant margin. The 800 gram MaP full flush is sufficient for typical household loads and consistent across owner reports. The 1.0 gallon partial flush is above the premium-tier minimum of 0.8, but well within efficient territory.

Unlike consumer-targeted brands that lead with aesthetics, the Avalanche is a straightforward elongated two-piece with clean lines but no standout design feature. Plumbers who specify Gerber for rental installations cite the parts availability and the low callback rate. For families with large households, the similar Gerber Viper is also worth considering. See our guide to best toilets for large families for context on high-use-case picks.

The TOTO Aquia IV Cube is the same Dynamax Tornado flush platform as the standard Aquia IV but with a sharp-cornered tank and bowl profile that suits contemporary bathroom design, making it the only dual flush toilet in this roundup that pairs a 0.8 gallon partial flush with genuinely architectural geometry.

Under the different exterior, the Aquia IV Cube uses the same Dynamax Tornado two-nozzle swirl system that earns the standard Aquia IV its flush reputation. The perfect 1000 gram MaP full flush, the 0.8 gallon partial flush, and the CeFiONtect glaze carry over unchanged. What changes is the silhouette: the tank has right-angle corners where the standard model has curves, and the bowl profile is sharper and more linear, which reads clearly as a design choice in a contemporary bathroom.

Owner reviews note that the flush performance is identical to the standard Aquia IV, so the decision comes down entirely to aesthetics and budget. The Cube carries a slight premium over the standard model for the design work. For buyers fitting out a modern primary bathroom where fixture appearance is a primary specification, that premium is well justified. This is also a strong pick for seniors who prefer a contemporary look without sacrificing the Aquia IV's comfort height and reliable clearing. See our roundup of best toilets for seniors for more comfort-height context.

The Kohler Highline Dual Flush brings WaterSense certification and Kohler's Class Five flush technology into the most widely available and lowest-cost dual flush configuration in the Kohler lineup, making it the right pick for budget-conscious buyers who still want a proven brand behind the fixture.

The Highline is Kohler's flagship traditional two-piece shape, and the dual flush variant carries the Class Five flushing system that Kohler has refined over many production years. The 1.0 gallon partial flush is the same as the Woodbridge T-0019 and the Gerber Avalanche, above the 0.8 of the premium tier but meaningfully below what a standard single-flush 1.28 model uses on every push. The 800 gram MaP full flush score meets our minimum threshold and handles normal household loads without double pressing in the large majority of owner reviews.

The Highline's long production history means replacement parts, seats, and fill valves are among the most widely available in retail and online. The 1-year warranty is standard for the category. For a second bathroom, a guest bath, or a budget-forward primary bathroom where the priority is reliability and efficiency over design standout, the Highline Dual Flush is the most accessible entry point in this roundup from a brand with a proven track record.