overall
TOTO Drake II CST454CEFG
9.7
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Upgrade your bathroom with a water-saving dual flush toilet that combines performance and style. Our top pick is the TOTO Drake II CST454CEFG, offering powerful flush and exceptional efficiency.
| # | Product | Best for | Flush Technology | Bowl Shape | Water Consumption | |
|---|---|---|---|---|---|---|
| 1 | TOTO Drake II CST454CEFG | overall | Tornado Flush | Elongated | 1.0/1.28 GPF | Check Price |
| 2 | Kohler K-3999-0 Highline Classic | value | Classic Flush | Elongated | 1.1/1.6 GPF | Check Price |
| 3 | American Standard 2886.128.020 H2Option | budget | Siphon Jet | Round | 1.0/1.6 GPF | Check Price |
Why we picked it: The TOTO Drake II uses the patented Tornado Flush system, which cleans the bowl with a powerful centrifugal force while using minimal water. Its 1.0/1.28 GPF dual flush saves water without sacrificing performance. The elongated bowl and Comfort Height design provide superior comfort. It consistently earns top marks for reliability and flush efficiency.
Homeowners seeking a premium, high-performance toilet that saves water and looks great.
Budget-conscious buyers who need a lower-cost option.
Key specs: Tornado Flush - Elongated - 1.0/1.28 GPF - 12-inch rough-in - Comfort Height - WaterSense certified
Why we picked it: The Kohler Highline Classic offers a reliable dual flush system with a classic two-piece design. Its 1.1/1.6 GPF flush provides effective waste removal while conserving water. The elongated bowl and Comfort Height offer added comfort. It is known for its durability and easy installation at a mid-range price.
Buyers looking for a dependable, mid-priced dual flush toilet with a classic look.
Those wanting the absolute best flush performance or a modern design.
Key specs: Classic flush - Elongated - 1.1/1.6 GPF - 12-inch rough-in - Comfort Height - WaterSense certified
Why we picked it: The American Standard H2Option is an affordable dual flush toilet that doesn't skimp on performance. Its Siphon Jet flush uses 1.0/1.6 GPF to clear waste effectively. The round bowl is ideal for smaller bathrooms. It is WaterSense certified and offers a good balance of price and features.
Budget-conscious shoppers or those with small bathrooms needing a compact toilet.
Users who prefer an elongated bowl or want premium features.
Key specs: Siphon Jet - Round - 1.0/1.6 GPF - 12-inch rough-in - Standard height - WaterSense certified
A dual flush toilet has two flush options: a low-volume flush for liquid waste and a higher-volume flush for solid waste, helping conserve water.
Dual flush toilets typically use 1.0–1.1 GPF for liquid and 1.28–1.6 GPF for solid, saving up to 20% more water than standard 1.6 GPF toilets.
Yes, they save water and money on utility bills, and modern models offer powerful flushing performance. They are a sustainable choice for any home.
TOTO is widely regarded as the best for performance and innovation, followed by Kohler and American Standard for reliability and value.
Look for toilets with powerful flush technology like TOTO's Tornado Flush or Kohler's Class Five to ensure waste is cleared in one flush without clogs.
Choose models with WaterSense certification and low GPF ratings (1.0/1.28 or 1.1/1.6) to maximize water savings without sacrificing performance.
Elongated bowls offer more comfort, while round bowls save space. Comfort Height (17-19 inches) is easier for adults to use, especially those with mobility issues.
| Feature | Why it matters |
|---|---|
| Dual Flush Mechanism | Allows you to choose between a light flush for liquid waste and a full flush for solid waste, saving water. |
| Flush Technology | Advanced systems like Tornado Flush or Siphon Jet ensure powerful, quiet, and clog-free operation. |
| Comfort Height | Slightly taller bowl (17-19 inches) makes sitting and standing easier, especially for taller individuals or seniors. |
| WaterSense Certification | Ensures the toilet meets EPA water efficiency standards, using at least 20% less water than standard models. |
Every product above was scored out of 10 on the same six-part rubric, then sorted into an S to C tier. We do not accept free units or payment for placement, and price or affiliate commission never factors into the score.
| Criterion | What we check | Weight |
|---|---|---|
| Core performance | The numbers that define the category: capacity, power, resolution, battery life, speed or output, taken from manufacturer specs and cross-checked against independent test data where it exists. | High |
| Build & reliability | Materials, warranty length, brand track record, and how often the model shows up in long-term failure or return complaints. | High |
| Real-world usability | Weight, dimensions, noise level, setup difficulty and day-to-day friction, drawn from owner reviews and published measurements. | Medium |
| Running cost | Ongoing costs beyond the purchase: subscriptions, consumables, energy use or maintenance, where they apply to the category. | Medium |
| Owner feedback | Patterns across aggregated verified owner reviews: recurring praise, recurring complaints, and whether the experience matches the marketing. | Medium |
| Value | What you get relative to the rest of the field at a similar price band, not an absolute price judgment. | Medium |
Sources: manufacturer spec sheets and manuals, retailer listing data, aggregated verified owner reviews, and published independent test results where available for the category.
Honesty note: We have not hands-on tested every product on this page. Where we have not personally used a product, its ranking is based on verified specs, aggregated owner feedback, availability and editorial comparison rather than a hands-on review. Hands-on impressions, when included in a product entry above, are clearly written from direct use.
We don't accept free units or payment for placement. Our rankings combine verified manufacturer specifications, real owner feedback and availability, compared on one transparent S to C rubric.