HOROW T0338W One Piece Toilet with ADA Chair Height 17.3", Dual Flush
4.5Editor score
Compact one-piece design
Siphon flushing system
Lifetime after-sales support
9 Best Dual Flush Toilets (November 2026) Expert Guide
Dual flush toilets offer an efficient way to save water without sacrificing performance. By providing two flush options, these toilets allow users to choose the appropriate water volume for liquid or solid waste, reducing overall consumption significantly.
We evaluated nine top-rated models based on flush power, design, comfort, and user feedback. Our comparison includes one-piece and two-piece options, ensuring you find a fit for any bathroom layout and preference.
Each pick highlights key features, pros, and cons to help you decide. Prices and availability change frequently, so check the latest details before making your final selection for your home upgrade.
Top 3 Picks for Best Dual Flush Toilets
DeerValley Elongated One-Piece Toilet with ADA Chair Height Seat, DV-1F0437
4.7Editor score
ADA compliant seat height
Soft-close quick-release seat
One-piece skirted design
Casta Diva Elongated One Piece Toilet with 17" Comfort Chair Height Seat
4.4Editor score
Meets WaterSense criteria
Quiet powerful siphon flush
Integrated tank and bowl
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Top 9 Best Dual Flush Toilets in 2026 Compared
This side-by-side comparison highlights the key specifications and design choices of each model to help you narrow down your options quickly.
ProductsSpecificationsEditor scorePrice
Best Budget
HOROW T0338W
17.3 inch seat height
One-piece compact design
Siphon flushing system
Soft-close seat included
4.5Editor score
Editor's Choice
American Standard H2Option
Two-piece elongated front
EverClean surface technology
12 inch rough-in
Clog-resistant siphon jet
4.3Editor score
Best Premium
St. Tropez Comfort Height
Vortex dual-flush technology
Non-porous ceramic bowl
1.1/1.6 GPF option
Standard 12 inch rough-in
4.3Editor score
DeerValley DV-1F0437
17.5 inch ADA seat
1000g MaP score
Quick-release soft-close seat
One-piece elongated design
4.7Editor score
Casta Diva Elongated
17 inch comfort height
Skirted one-piece toilet
WaterSense criteria met
1000g MAP rating
4.4Editor score
HOROW HR-ST076WD
Compact skirted design
1.1/1.6 GPF dual flush
Elongated bowl comfort
Includes soft-close seat
4.5Editor score
Universal 2-Inch Valve Kit
Fits 2 inch toilets
Universal compatibility
Push button flush valve
Includes fill valve and gasket
4.4Editor score
KOHLER Wellworth
Two-piece elongated design
Class Five Flush System
Left-hand trip lever
1.1/1.6 GPF options
4.0Editor score
DeerValley Symmetry
1000g Max flushing performance
Skirted trap design
Soft-close quick-release seat
Includes all installation hardware
4.4Editor score
1. DeerValley DV-1F0437 – Best Overall Dual Flush Toilet
DeerValley DV-1F0437
Elongated one-piece design
17.5 inch ADA height
1000g MaP performance
Soft-close seat included
This one-piece toilet combines high performance with modern design. With a strong MaP score and ADA-compliant height, it ensures comfort and reliability. Users appreciate the soft-close seat and easy maintenance features.
Pros
- High MaP score for powerful flushing
- Comfortable ADA-compliant seat height
- Seamless design is easy to clean
- Quick-release seat for maintenance
- Excellent value for features offered
Cons
- Seat sold separately for some models
- Requires 12 inch rough-in space
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The flush performance is particularly noteworthy. The dual-flush system allows for significant water savings while ensuring waste is cleared effectively in one go. The glazed trapway helps prevent clogs and keeps the bowl cleaner longer.
While the price is competitive, the build quality feels premium. The ceramic is thick and durable, resisting scratches and stains. The only minor downside is ensuring you have the correct rough-in measurement before purchase.
For homeowners seeking a balance of style, efficiency, and power, this model is a top contender. It suits both small and standard bathrooms well. We recommend this for its overall reliability and user satisfaction.
Why It Leads the Pack
Its combination of a high MaP score and ADA compliance makes it stand out among competitors in terms of practical usability.
Design and Maintenance
The one-piece skirted design eliminates hidden corners where dust accumulates, making cleaning a quick and effortless task.
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2. HOROW T0338W – Best Premium Compact Design
HOROW T0338W
Compact elongated design
17.3 inch seat height
2 inch trapway for power
Soft-close seat included
The HOROW T0338W is ideal for those with space constraints who do not want to sacrifice comfort. Its compact footprint hides a powerful siphon flushing system. The ADA height ensures easy sitting and standing for all users.
Pros
- Perfect for small bathrooms
- Siphon flush prevents clogs
- ADA chair height for comfort
- Lifetime after-sales support
- Easy installation options
Cons
- Limited color options
- Slightly higher price point
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The one-piece design gives it a sleek, modern look that elevates the bathroom aesthetic. The trapway is fully glazed to maximize flush power and reduce the chance of blockage. It uses water efficiently without compromising performance.
Some users note the price is higher than basic models, but the added features justify the cost. The included seat and support warranty add long-term value. It is a reliable choice for renovations or new builds.
If space is at a premium, this model delivers without cutting corners. It balances style and function beautifully. We suggest it for anyone wanting a high-end look in a smaller bathroom.
Space-Saving Benefits
Its smaller dimensions allow it to fit into tight spots while maintaining the comfort of an elongated bowl and ADA height.
Reliable Support
HOROW provides a responsive support team that addresses any issues quickly, ensuring peace of mind during installation and use.
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3. Casta Diva – Best Budget Dual Flush Option
Casta Diva
WaterSense criteria met
Skirted one-piece design
1000g MAP rating
17 inch comfort height
The Casta Diva offers exceptional value with its low price and robust features. It meets WaterSense criteria, helping reduce water bills. The skirted design looks modern and makes cleaning much easier than traditional toilets.
Pros
- Affordable price point
- Water-saving performance
- Easy to clean design
- Quiet siphon flush
- Complete hardware included
Cons
- Plastic seat may not match bowl
- Standard rough-in required
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Despite the budget price, it delivers strong flushing power. The siphon jet is quiet and effective, ensuring waste is cleared efficiently. The soft-close seat adds a touch of comfort and prevents slamming.
The included hardware makes installation straightforward. It is a solid choice for rental properties or secondary bathrooms. While some parts are standard quality, they perform well for daily use.
For those on a tight budget, this model provides the best bang for your buck. It covers all essential needs without fluff. We recommend it for cost-conscious buyers needing a reliable toilet.
Eco-Friendly Savings
Its water-efficient flush options help lower utility costs while still providing a clean and effective flush every time.
Installation Convenience
Everything needed for setup is included in the box, saving you the hassle of buying extra parts from the store.
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4. American Standard H2Option – Best Classic Two-Piece
American Standard H2Option
EverClean surface coating
Two-piece elongated front
12 inch rough-in size
Siphon jet technology
American Standard is a household name in the plumbing industry. The H2Option model brings traditional reliability to dual flush systems. Its EverClean surface resists stains and bacteria, keeping the bowl fresh between cleanings.
Pros
- Trusted brand reputation
- EverClean stays cleaner longer
- High MaP score
- Water-saving flush options
- Lifetime chinaware warranty
Cons
- Seat sold separately
- Standard two-piece bulk
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The two-piece design is familiar and easy to install. The siphon jet moves waste quickly and quietly. With a high MaP score, it handles heavy use without frequent clogs. It fits standard bathrooms perfectly.
One consideration is the separate seat purchase. This allows you to choose a seat that matches your preference. The warranty coverage offers long-term protection against manufacturing defects and wear.
If you prefer a proven brand and classic style, this is a safe choice. It balances performance and maintenance well. We recommend it for those who value durability and brand trust.
Surface Technology
The EverClean coating prevents dirt buildup, reducing the effort needed to maintain a hygienic bathroom environment.
Brand Reliability
Known for decades of quality, American Standard ensures that parts are available and support is readily accessible if needed.
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5. St. Tropez – Best Vortex Flush System
St. Tropez Comfort Height
Vortex dual-flush action
Non-porous ceramic build
1.1/1.6 GPF choice
Standard 12 inch rough-in
The St. Tropez focuses on flushing power with its Vortex dual-flush technology. This creates a cyclonic action that scrubs the bowl thoroughly. It ensures waste is removed efficiently with minimal water usage per flush.
Pros
- Powerful cyclonic rinsing
- Durable scratch-resistant surface
- Comfortable elongated bowl
- Water-efficient operation
- Easy to install
Cons
- Fewer style variations
- Standard height may not suit all
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The non-porous ceramic resists scratches and stains effectively. The elongated bowl provides extra comfort for daily use. It fits standard bathroom layouts with a 12-inch rough-in requirement. It is a straightforward and reliable option.
Some models may have a standard height that differs from ADA standards. Users should verify dimensions before buying. Otherwise, it offers a solid balance of cost and performance for a one-piece toilet.
For those wanting a simple upgrade with effective flushing, this model works well. The Vortex feature is a standout for cleaning. We suggest it for small to mid-sized bathrooms.
Vortex Efficiency
The cyclonic rinsing action cleans the bowl walls during every flush, reducing manual cleaning frequency significantly.
Durable Build
Constructed from high-quality ceramic, this toilet resists surface wear and maintains its white appearance for years.
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6. HOROW HR-ST076WD – Best Compact Skirted Style
HOROW HR-ST076WD
Concealed skirted trapway
Compact 28 inch depth
Soft-close seat included
1.28 avg GPF rate
This model stands out for its concealed trapway design that hides the plumbing lines. The skirted look reduces corners where dirt can hide. It is designed for apartments and powder rooms where space matters most.
Pros
- Sleek modern look
- Easy to clean exterior
- Compact size for small rooms
- Includes all installation parts
- Reliable after-sales service
Cons
- Limited availability
- Seat may need adjustment
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The elongated bowl ensures comfort despite the compact footprint. It uses a dual-flush system to save water effectively. Installation is supported by included parts and clear instructions. It fits many standard 12-inch rough-ins.
The soft-close seat is a nice addition that reduces noise. Customers appreciate the responsive customer support from HOROW. It provides peace of mind for long-term ownership and maintenance.
For modern aesthetics and ease of cleaning, this is a strong choice. It maximizes utility in tight spaces. We recommend it for anyone wanting a contemporary look.
Modern Aesthetics
The concealed trapway creates a smooth silhouette that looks sleek and contemporary in any bathroom setting.
Cleaning Ease
Without exposed grooves or pipes, wiping the exterior is fast and thorough, saving time on household chores.
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7. Universal Repair Kit – Best Retrofit Option
Universal 2-Inch Valve Kit
Fits 2-inch 2-piece units
Universal compatibility
Push button flush option
Includes fill valve gasket
If your existing toilet works well but needs better efficiency, this kit offers a great solution. It upgrades a standard toilet to dual flush capabilities. It allows you to save water without buying a whole new unit.
Pros
- Turns old toilet into dual flush
- Affordable compared to replacement
- Easy flexible installation
- Stops leaks effectively
- Adjustable water levels
Cons
- Only for two-piece toilets
- Requires tank access
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The installation process is flexible and adjustable. It fits many popular brands and sizes. The push button adds convenience and modern appeal. It helps stop leaks that waste money over time.
Note that this only works for two-piece toilets with specific tank openings. Check measurements before ordering. It is an excellent choice for renters or budget upgrades.
For maintaining your current setup with better performance, this is highly effective. It is a smart choice for cost-conscious users. We recommend it for simple, impactful home improvements.
Cost Effective Upgrade
Upgrading via a kit costs significantly less than a full toilet replacement while offering similar water savings.
Leak Prevention
New seals and valves in this kit stop common leaks, helping protect your floors and reduce water bills.
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8. KOHLER Wellworth – Best Traditional Leverage
KOHLER Wellworth
Class Five Flush System
Two-piece elongated bowl
Left-hand trip lever
1.1/1.6 GPF flush
The KOHLER Wellworth brings traditional reliability to dual flush systems. Its Class Five flush system ensures strong waste removal. It is a solid two-piece option that fits many standard bathrooms with ease.
Pros
- Trusted KOHLER quality
- Class Five powerful flush
- Classic simple design
- Comfortable elongated bowl
- Widespread parts availability
Cons
- Lower rating than newer models
- Basic finish options
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The left-hand trip lever is a familiar feature for those used to older styles. It provides a dual-flush choice to manage water usage. The elongated bowl offers comfort for various body types.
Some users find the finish more basic compared to modern high-end models. However, it remains a workhorse for daily use. KOHLER support and parts make maintenance easy in the long run.
If you prefer a classic look with strong brand backing, this is a good fit. It balances function with reliability. We suggest it for standard renovations or replacements.
Class Five Performance
KOHLER's Class Five technology delivers a large volume of water in a short time to clear waste efficiently.
Legacy Reliability
As a long-standing brand, KOHLER ensures that repairs and replacements are easy to find for this classic model.
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9. DeerValley Symmetry – Best Value Package
DeerValley Symmetry
Skirted trap design
1000g Max performance
Soft-close quick-release seat
Includes full hardware kit
The DeerValley Symmetry comes ready for install with all necessary parts included. It offers a quiet and powerful flush with its siphon design. The one-piece shape looks clean and modern in any bathroom style.
Pros
- Complete installation package
- Quiet dual-flush operation
- Compact space-saving size
- Easy to clean trap
- Strong flushing capacity
Cons
- Height varies by batch
- White only color choice
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Its compact dimensions make it suitable for tight spaces while retaining comfort. The quick-release seat simplifies deep cleaning. It handles solids well, which is crucial for avoiding clogs.
Some users report slight variation in height dimensions. Verify the specs before buying. The warranty provides good protection for a one-year period. It is a practical choice for home upgrades.
For a hassle-free installation and solid performance, this model is highly recommended. It covers all basics with quality materials. We suggest it for those wanting a complete solution.
Complete Package
This kit includes wax rings, bolts, and valves, so you do not need to source extra parts for installation.
Noise Reduction
The siphon design and dual-flush mechanism work quietly, making it ideal for overnight use without disturbance.
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Buying Guide – How to Choose the Best Dual Flush Toilets
Selecting the right dual flush toilet involves considering several technical and comfort factors. This guide walks you through the key aspects to help you make an informed decision.
Flush Performance and MaP Rating
The MaP (Maximum Performance) score indicates how much waste the toilet can clear in a single flush. A score of 1000 grams is ideal, ensuring clog-free operation and reliable hygiene. Look for models with high scores for peace of mind.
Prioritize high MaP ratings to avoid frequent clogs and maintenance issues.
One-Piece vs. Two-Piece Design
One-piece toilets feature a seamless tank and bowl, offering a sleeker look and easier cleaning. They often fit better in compact spaces. Two-piece toilets are generally more affordable and easier to transport and install, but may have more crevices for dirt.
Choose one-piece for style and cleanliness, or two-piece for budget and ease of installation.
Rough-In Size Compatibility
Measure the distance from the wall to the center of the drain pipe. Most homes use 12 inches, but some older bathrooms have 10 or 14 inches. Matching this measurement is critical to avoid costly plumbing changes. Always verify dimensions before purchasing.
Ensure the rough-in size matches your bathroom to avoid installation problems.
Water Efficiency and GPF
Dual flush toilets typically offer a low flush for liquids (around 1.1 GPF) and a full flush for solids (around 1.6 GPF). This system meets EPA WaterSense criteria and significantly reduces water bills. It balances environmental responsibility with performance.
Check the GPF ratings to ensure they meet your water-saving goals.
Comfort and Seat Height
ADA-compliant seats are about 17 to 19 inches high, making sitting and standing easier for seniors and those with mobility issues. Standard bowls are around 15 inches. Consider your household needs to choose a height that offers comfort daily.
Select a chair-height bowl for better accessibility and daily comfort.
Trapway Design and Cleaning
A fully glazed trapway ensures smooth waste passage. Skirted designs hide plumbing and have no grooves, making cleaning easier. Avoid exposed trapways if you want minimal maintenance. This affects hygiene and the aesthetic of your bathroom.
Prefer glazed and skirted trapways for easier cleaning and hygiene.
Seat Quality and Features
A soft-close seat prevents slamming and reduces noise. Quick-release hinges allow easy removal for cleaning. Ensure the material is durable and non-yellowing. A good seat adds significant value to the user experience over time.
Look for soft-close and quick-release seats for durability and convenience.
Warranty and Support
Check the warranty terms for the tank, bowl, and mechanical parts. A lifetime warranty on porcelain and a one-year warranty on parts are standard. Good customer support ensures any issues during installation are resolved quickly.
Choose brands offering robust warranties and responsive customer service.
How to Use and Care for Your Dual Flush Toilets
Use the smaller button or lever for liquid waste and the larger one for solid waste to maximize water savings. This simple habit can save hundreds of gallons per year.
Clean the exterior with mild soap and water. Avoid abrasive cleaners that can scratch the surface. Use a soft cloth to wipe the tank and bowl regularly to keep it looking new.
Check the tank occasionally for leaks or unusual noises. If water runs continuously, adjust the fill valve or check the seal. Regular checks prevent waste and extend the toilet's lifespan.
Frequently Asked Questions
Are dual flush toilets worth the investment?
Yes, they save significant water and money on utility bills. Modern models maintain high performance while using less water, making them eco-friendly and cost-effective.
What is the difference between one-piece and two-piece toilets?
One-piece toilets have a seamless design that is easier to clean and looks modern. Two-piece toilets have separate tanks and bowls, which are often cheaper and easier to transport but have more cleaning crevices.
How do I know which rough-in size I need?
Measure the distance from the finished wall behind the toilet to the center of the drain pipe. Most homes use 12 inches, but measuring ensures you buy the correct model for your space.
What is a skirted trapway?
A skirted trapway hides the pipes behind a smooth panel. This design prevents dirt accumulation and makes cleaning the base of the toilet much easier compared to exposed designs.
Can I upgrade my old toilet to dual flush?
Yes, you can install a dual flush valve kit inside the tank of many two-piece toilets. This is a cost-effective way to gain water savings without buying a new toilet.
What does the MaP score mean?
The MaP score measures the maximum performance of waste removal in grams. A higher score, typically up to 1000 grams, indicates a more powerful flush that is less likely to clog.
Do dual flush toilets clog easily?
No, modern dual flush toilets with glazed trapways and high MaP scores are designed to clog less. Using the full flush for solids ensures proper waste removal and reduces clog risks.
Is ADA-compliant height standard for dual flush toilets?
Many dual flush models offer ADA-compliant height, which is around 17 to 19 inches. This makes them easier to use for elderly individuals and people with mobility challenges.
Final Thoughts on Choosing the Best Dual Flush Toilets
The DeerValley DV-1F0437, HOROW T0338W, and Casta Diva lead this list with their balance of performance, comfort, and water efficiency. Each offers unique benefits for different bathroom needs.
Prioritize a toilet with a high MaP score and a comfortable seat height. Look for features like soft-close seats and skirted designs to ensure long-term usability and ease of maintenance.
Always verify rough-in measurements and check current availability before buying. Prices and stock fluctuate, so checking the latest details ensures you get the best deal for your upgrade.