Dual flush toilets offer an eco-friendly solution by combining two flushing options—usually a low-volume flush for liquids and a higher-volume flush for solids—helping reduce water usage. The best models balance water efficiency with reliable performance and comfort. The Elongated One Piece Toilet with ADA height stands out for its comfort and efficiency, while the DeerValley Elongated One-Piece offers a budget-friendly, space-saving option. However, tradeoffs often involve choosing between higher-end comfort features and more affordable, simpler designs. Continue reading for a full breakdown of the top dual flush toilets and what to consider before buying.
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Key Takeaways
- Elongated and one-piece designs generally offer better comfort and aesthetics, but may come at a higher price.
- ADA height models tend to provide easier access, especially for seniors or those with mobility issues.
- Water efficiency varies, with most models offering 1.1/1.6 GPF dual flush options that significantly reduce water consumption.
- Soft-close seats and skirted designs add to convenience but can increase the initial cost and complexity of installation.
- Choosing the right flush mechanism depends on balancing budget, space, and specific user needs.
| dual flush toilet | Material | Seat Height |
|---|---|---|
| Elongated One Piece Toilet wit | One-piece ceramic | 17.3 inches |
| Gerber Maxwell Select Elongate | — | — |
| DeerValley Elongated One-Piece | Ceramic | 17.5 inches |
| Casta Diva Elongated One Piece | White ceramic | 17 inches |
| Gerber Maxwell Select Round Tw | — | — |
| Casta Diva One Piece Elongated | Ceramic | 17.5 inches |
| HOROW T0338W One Piece Toilet | — | 17.3" |
| St. Tropez Comfort Height One- | Ceramic | — |
| HOROW 17 Inch Comfort Height T | Glazed ceramic | — |
| DeerValley Compact One Piece T | — | — |
More Details on Our Top Picks
Elongated One Piece Toilet with 17.3″ ADA Comfort Chair Height, Dual Flush 1.1/1.6 GPF, Soft Closing Seat, 12″ Rough-In
This Elongated One Piece Toilet stands out for its combination of comfort and sleek design, making it ideal for those prioritizing ease of use and minimal cleaning. Its 17.3-inch ADA height ensures easier sitting and standing, surpassing standard-height models. Compared with the Gerber Maxwell Select, this model offers a seamless, one-piece construction that simplifies cleaning and reduces potential leaks. The dual-flush system delivers excellent water savings, especially for households conscious of conservation. However, its standard 12-inch rough-in may not fit all bathrooms, and the higher price tag could be a concern for budget-focused buyers. This toilet makes the most sense for homeowners who want a high-quality, ADA-compliant upgrade that combines style and efficiency without compromise.
Pros:- Comfortable ADA height for easy sitting and standing
- Water-efficient dual flush system
- Sleek, seamless design for easy cleaning
- Includes soft-close seat for quiet operation
Cons:- Requires standard 12-inch rough-in, which may not fit all bathrooms
- Potentially higher cost compared to basic models
Best for: Homeowners seeking a comfortable, easy-to-maintain toilet with ADA height and sleek design.
Not ideal for: Renters or those with non-standard rough-in measurements, as installation may be limited or costly.
- Seat Height:17.3 inches
- Flush System:Dual flush 1.1/1.6 GPF
- Rough-In:12 inches
- MaP Score:1000g
- Material:One-piece ceramic
- Certification:WaterSense, DOE, cUPC, CEC
Our verdict“This model is best suited for those who want a comfortable, stylish, and efficient toilet at a premium level.”
Gerber Maxwell Select Elongated Two-Piece Dual-Flush Toilet, White
The Gerber Maxwell Select offers a reliable dual-flush system at a more accessible price point, making it well-suited for budget-conscious buyers. Its two-piece design may require more cleaning than a one-piece, but it provides easy access for maintenance. The glazed trapway helps reduce clogs, and the soft-close elongated seat adds comfort without noise. Compared with the DeerValley DV-1F0437, this model’s straightforward installation and proven performance make it a practical choice. However, installation might need professional help, especially for those unfamiliar with plumbing. Its elongated seat may not fit smaller bathrooms, limiting options for tight spaces. Overall, this toilet balances efficiency and affordability, making it ideal for secondary bathrooms or guest spaces.
Pros:- Efficient dual-flush system saves water
- Soft-close seat prevents noise and slamming
- Glazed trapway reduces clog risk
- Affordable price point
Cons:- May require professional installation
- Elongated seat size may not suit small bathrooms
Best for: Budget-conscious homeowners installing a dual-flush toilet in primary or secondary bathrooms.
Not ideal for: Small bathrooms with limited space, due to the elongated seat, or DIYers uncomfortable with installation.
- Type:Two-piece toilet
- Color:White
- Flush mechanism:Dual-flush
- Flush rates:1.28 and 1.0 gpf
- Seat:Soft-close elongated seat
- Trapway:Glazed trapway
Our verdict“This toilet provides reliable performance and water savings at a price that appeals to budget-minded consumers.”
DeerValley Elongated One-Piece Toilet with ADA Chair Height Seat, DV-1F0437
This DeerValley model offers a seamless, ADA-compliant height of 17.5 inches, making it a solid choice for users requiring accessible options. Its one-piece design not only enhances aesthetic appeal but also simplifies cleaning, surpassing traditional two-piece models like the Gerber Maxwell. Its dual-flush system provides efficient water use, and the quick-release, soft-close seat improves convenience. However, its weight and size mean installation can be challenging, especially in bathrooms with limited space. The requirement for a 12-inch rough-in might exclude some older or custom setups. Still, this toilet is ideal for those prioritizing accessibility and style, especially in larger bathrooms where space is available.
Pros:- ADA-compliant 17.5-inch height for accessibility
- Elegant seamless one-piece design
- Dual-flush system improves water efficiency
- Quick-release, soft-close seat for easy cleaning
Cons:- Heavyweight making installation more difficult
- Requires sufficient space for elongated shape
- Limited to 12-inch rough-in installations
Best for: Individuals with mobility challenges or homes where accessibility upgrades are a priority.
Not ideal for: Small bathrooms or users seeking a lightweight, easy-to-install fixture without ADA features.
- Material:Ceramic
- Flush System:Dual-flush (1 GPF / 1.28 GPF)
- Seat Height:17.5 inches
- Depth:26.77 inches
- Width:14.5 inches
- Rough-in Size:12 inches
Our verdict“This toilet is perfect for accessible bathrooms where comfort and style are equally important, despite installation challenges.”
Casta Diva Elongated One Piece Toilet with 17″ Comfort Chair Height Seat
The Casta Diva model combines a modern, seamless design with a powerful siphon jet flush, making cleaning straightforward and reducing the risk of clogs. Its 17-inch seat height offers improved comfort over standard models, especially for taller users. The dual-flush options promote water conservation, matching the efficiency of models like the Gerber Maxwell. Its skirted, one-piece construction minimizes crevices where dirt can accumulate, simplifying maintenance. On the downside, installation might be more complex for DIYers due to plumbing specifics, and the white-only color limits customization. This pick makes the most sense for homeowners seeking a stylish, easy-to-maintain toilet that balances performance with aesthetics.
Pros:- Modern, seamless design for easy cleaning
- Powerful siphon jet minimizes clogs
- Dual-flush water savings
- Comfortable 17-inch seat height
Cons:- Installation may require plumbing expertise
- Limited color options to white
Best for: Homeowners wanting a stylish, low-maintenance toilet with a focus on ease of cleaning and water efficiency.
Not ideal for: DIYers unfamiliar with plumbing or those needing multiple color options for decor flexibility.
- Type:Elongated One Piece
- Seat Height:17 inches
- Depth:27.17 inches
- Width:14.37 inches
- Height:25.39 inches
- Flush System:Dual-flush (1.1 GPF for liquids, 1.6 GPF for solids)
- Material:White ceramic
Our verdict“This toilet suits those who prioritize style and ease of cleaning without sacrificing water efficiency and comfort.”
Gerber Maxwell Select Round Two-Piece Dual-Flush Toilet, White
The Gerber Maxwell Select Round provides a compact, two-piece design perfect for bathrooms where space is limited. Its round seat shape fits smaller areas better than elongated models, making it suitable for secondary bathrooms or guest spaces. The dual-flush system offers solid water savings, comparable to other high-efficiency models like the DeerValley DV-1F0437. Its soft-close seat prevents noise, adding comfort for quiet household routines. A tradeoff is that its round shape generally means slightly less comfort for taller users and might be less stylish than elongated models. Still, for those prioritizing space-saving design and reliable performance, this toilet hits the mark.
Pros:- Efficient dual-flush system saves water
- Compact round shape fits small bathrooms
- Soft-close seat for quiet operation
- Strong, clog-resistant flush
Cons:- Round seat less comfortable for some users
- May require professional installation
Best for: Homes with limited bathroom space needing an efficient, space-saving dual-flush toilet.
Not ideal for: Larger households or tall users who prefer elongated seats for added comfort.
- Type:Two-piece toilet
- Color:White
- Flush mechanism:Dual-flush
- Flush volume:1.28 and 1.0 gpf
- Seat:Soft-close round seat
- Trapway:Smooth glazed
Our verdict“Ideal for small bathrooms needing a dependable, space-efficient dual-flush toilet, though less suited for taller or comfort-focused users.”
Casta Diva One Piece Elongated Toilet with 17.5″ ADA Height Comfort Seat
This toilet stands out for combining a comfortable ADA-height seat with a sleek, skirted design that simplifies cleaning. Compared with the HOROW T0338W, it offers a higher seat height, which can be a game-changer for seniors or those with mobility issues. Its powerful siphon jet and dual-flush system ensure water savings without sacrificing performance, and the soft-close seat adds a touch of quiet convenience. The main tradeoff involves its standard 12-inch rough-in requirement, which may limit installation flexibility. Additionally, its weight and size could pose challenges during installation, especially in tight spaces. This pick is ideal for homeowners prioritizing comfort and modern aesthetics but should be avoided if space is limited or if a more lightweight option is desired.
Pros:- Comfortable ADA height for easy sitting and standing
- Sleek skirted design for easy cleaning
- Water-saving dual-flush system
Cons:- Requires standard 12-inch rough-in, limiting flexibility
- Heavier than traditional models, potentially complicating installation
Best for: Homeowners seeking a comfortable, modern, and water-efficient toilet suitable for aging-in-place or accessible bathrooms
Not ideal for: People with small or irregular bathroom layouts where installation space is constrained or for those preferring lightweight fixtures
- Height:26.57 inches
- Depth:25.39 inches
- Width:14.56 inches
- Seat Height:17.5 inches
- Flush Rate:1.0 GPF (liquids), 1.28 GPF (solids)
- Material:Ceramic
- Installation Type:Floor-mounted
- Rough-in Size:12 inches
Our verdict“This toilet suits those who prioritize comfort, style, and water efficiency in a standard-sized bathroom.”
HOROW T0338W One Piece Toilet with ADA Chair Height 17.3″ Dual Flush
This model delivers a comfortable ADA chair height combined with a seamless, easy-to-clean design. Unlike the Casta Diva, it offers a slightly lower seat height at 17.3 inches, still suitable for most users needing accessibility features. Its dual-flush technology promotes water savings, and the fully glazed siphon trapway ensures effective waste removal. While it offers straightforward installation, it may require specific rough-in sizes, and the limited color options could restrict aesthetic choices. Its integrated design simplifies cleaning, but the slightly lower height compared to the Casta Diva makes it less ideal for taller users. This toilet makes the most sense for those seeking a reliable, accessible fixture that’s easy to install and maintain.
Pros:- Comfortable ADA chair height for easy use
- Seamless, easy-to-clean design
- Water-efficient dual-flush system
Cons:- Installation may require specific rough-in sizes
- Limited color options restrict customization
Best for: Seniors or users with mobility challenges needing a reliable, easy-to-clean toilet with straightforward installation
Not ideal for: Homeowners looking for a higher or more decorative toilet or those with space constraints that require a compact unit
- Dimensions:26.6″D x 15″W x 26″H
- Seat Height:17.3″
- Flush Options:1.1/1.6 GPF
- Trapway:2″ fully glazed siphon
Our verdict“Ideal for those prioritizing accessibility, ease of maintenance, and reliable performance in a standard bathroom setup.”
St. Tropez Comfort Height One-Piece Elongated Toilet, Vortex Dual-Flush 1.1/1.6 GPF, White
This elongated toilet offers advanced vortex flush technology that provides reliable waste removal with minimal water use. Compared to the HOROW T0338W, it emphasizes water efficiency with a dual-flush of just 1.1/1.6 GPF, making it an excellent choice for eco-conscious consumers. Its durable ceramic surface resists scratches and stains, ensuring long-term appearance. The tradeoff is that it requires a standard 12-inch rough-in, and its higher-quality ceramic may come at a higher price point. The elongated bowl adds comfort but might be less suitable for very small bathrooms. Overall, this model is well-suited for those seeking a balance of performance, durability, and water savings, but it may be overkill if budget is a primary concern.
Pros:- Water-efficient dual vortex flush technology
- Elongated bowl for added comfort
- Scratch-resistant, durable ceramic
Cons:- Requires standard 12-inch rough-in
- Potentially higher cost for premium ceramic
Best for: Homeowners prioritizing water efficiency, durability, and comfort in a modern, elongated design
Not ideal for: Small bathrooms with tight space constraints or budget-conscious buyers seeking an economical option
- Flush Technology:Dual Vortex
- Flush Capacity:1.1/1.6 GPF
- Rough-In:12 inches
- Bowl Shape:Elongated
- Material:Ceramic
- Color:White
Our verdict“This toilet suits users who want effective waste removal, durability, and water savings in a mid-sized bathroom.”
HOROW 17 Inch Comfort Height Toilet, ADA Chair Height Two Piece Elongated Toilet
This two-piece model provides a 17-inch ADA-compliant height with a powerful MAP 1000g flush, reducing clogging and maintenance needs. Compared with the DeerValley Compact, it offers a more robust flush mechanism suitable for households with frequent use or larger waste loads. Its dual-flush system emphasizes water efficiency, and the soft-close seat adds comfort. The main limitation is that the two-piece design may be less convenient to clean thoroughly, and taller users might find the height less optimal. Installation is straightforward with a standard 12-inch rough-in, making it suitable for DIYers. This toilet makes sense for those who value high performance and durability over a seamless look.
Pros:- Powerful MAP 1000g flush for minimal clogging
- Comfortable ADA height for easy use
- Dual-flush water efficiency
Cons:- Two-piece design less convenient for cleaning
- Height may not suit all users
Best for: Families or households needing a reliable, clog-resistant toilet with high-performance flushing
Not ideal for: Users seeking a one-piece or more modern aesthetic or those sensitive to slightly higher maintenance for cleaning
- Height:17 inches
- Type:Two-piece elongated
- Flush Performance:MAP 1000g
- Flush Options:Dual 1.1/1.6 GPF
- Rough-In:12 inches
- Material:Glazed ceramic
Our verdict“Best suited for households prioritizing flushing power, durability, and water efficiency over seamless design.”
DeerValley Compact One Piece Toilet with Soft-Close Seat, Dual Flush, 12” Rough-In, Skirted Design
This compact, one-piece toilet is designed specifically for tight spaces, offering a space-saving profile with a skirted, easy-to-clean design. Compared with the larger Casta Diva, this model emphasizes size reduction without sacrificing dual-flush water efficiency. Its quiet soft-close seat and minimal crevices make maintenance simpler, ideal for small bathrooms. However, the compact size may limit weight capacity and overall comfort for taller or larger users. The dual-flush mechanism, while efficient, may require some adjustment during initial use. This toilet is a clear choice for those with limited bathroom space but less suitable for users who need a larger, more robust fixture.
Pros:- Compact, space-saving design ideal for small bathrooms
- Water-efficient dual-flush system
- Easy-to-clean skirted surface with minimal crevices
Cons:- Limited size may not support larger users comfortably
- Installation might require professional help for best fit
Best for: Small bathroom owners needing a space-efficient, easy-to-maintain toilet that still offers dual-flush benefits
Not ideal for: Larger households or users who prioritize maximum comfort and capacity over space savings
- Dimensions:24½”L×13⅜”W×28⅜”H
- Rough-In:12 inches
- Flush Rate:1.1/1.6 GPF
- Weight Capacity:250 lbs
- Design:Skirted, one-piece
- Seat:Soft-close, quiet (28dB)
Our verdict“Perfect for maximizing space in small bathrooms while maintaining water efficiency and ease of cleaning.”
How We Picked
Products were selected based on their performance, build quality, and usability in real-world scenarios. Priority was given to models that deliver consistent dual flush operation, ease of installation, and durability. We also evaluated comfort features like height and seat quality, as well as value for the price. The ranking reflects a combination of these factors, aiming to highlight options suitable for a range of budgets and needs—from basic, space-saving models to premium, comfort-oriented designs.
Tradeoffs such as higher costs versus better comfort or water savings versus installation complexity were carefully considered. The goal was to identify models that balance reliability, convenience, and efficiency, helping buyers make informed decisions based on their priorities.
| dual flush toilet | Material |
|---|---|
| Elongated One Piece Toilet wit | One-piece ceramic |
| Gerber Maxwell Select Elongate | — |
| DeerValley Elongated One-Piece | Ceramic |
| Casta Diva Elongated One Piece | White ceramic |
| Gerber Maxwell Select Round Tw | — |
| Casta Diva One Piece Elongated | Ceramic |
| HOROW T0338W One Piece Toilet | — |
| St. Tropez Comfort Height One- | Ceramic |
| HOROW 17 Inch Comfort Height T | Glazed ceramic |
| DeerValley Compact One Piece T | — |
Factors to Consider When Choosing Dual Flush Toilets
Choosing the right dual flush toilet involves more than just picking the best-looking model. It requires understanding key factors that influence performance, comfort, and long-term satisfaction. Here are some important considerations to keep in mind when evaluating your options.Flushing Performance and Water Efficiency
Look for models that reliably deliver both flush options and minimize water usage. Dual flush toilets typically operate at 1.1 GPF for liquid waste and 1.6 GPF or less for solids. Efficient flushing mechanisms prevent clogs and ensure waste removal without wasting water. Keep in mind that some low-cost models may struggle with solids or require frequent maintenance, so balance efficiency with reliability.
Comfort and Height
Comfort features such as elongated bowls and ADA height seats make a big difference, especially for users with mobility issues or those who prefer a more natural seating position. While standard height toilets are suitable for most, ADA height models reduce strain and improve accessibility. However, higher models can sometimes be bulkier or require specific installation considerations, so measure your space carefully.
Design and Space Considerations
Skirted and one-piece designs offer cleaner aesthetics and easier cleaning, but they tend to be more expensive and less flexible in terms of replacement parts. Compact models are ideal for small bathrooms or tight spaces but may sacrifice some comfort or feature set. Evaluate your bathroom layout to choose a design that fits well without compromising usability.
Installation and Maintenance
Some dual flush toilets are more straightforward to install, especially those with standard rough-in measurements. Consider the availability of replacement parts and ease of maintenance, particularly if you prefer DIY fixes. Models with fewer components or integrated designs often simplify upkeep but may be costlier initially.
Price and Long-term Value
While premium models offer enhanced comfort and advanced features, they come with higher upfront costs. Conversely, budget options might save money initially but could lead to more repairs or less satisfaction over time. Think about your long-term needs and whether investing more initially will pay off through durability and efficiency.
Frequently Asked Questions
How do dual flush toilets save water compared to traditional toilets?
Dual flush toilets provide two options—typically a lower volume flush (around 1.1 GPF) for liquids and a higher volume flush (around 1.6 GPF) for solids. This allows users to select a water-saving flush when appropriate, reducing overall water consumption. Over time, this can lead to significant water bill savings and environmental benefits. Many models also incorporate efficient flushing mechanisms to prevent clogs, making them a practical choice for eco-conscious households.
Are dual flush toilets compatible with all bathroom layouts?
Most dual flush toilets are designed to fit standard rough-in measurements, usually 12 inches, but some variations exist. It’s important to measure your space carefully before purchasing. Compact or wall-mounted models may require specific installation setups, so compatibility depends on your bathroom’s existing plumbing and available space. Consulting with a professional can ensure proper fit and installation if you have unique layout constraints.
Do dual flush toilets require more maintenance than single-flush models?
In general, dual flush toilets are comparable in maintenance needs to traditional models, but their more complex flushing mechanisms can sometimes require additional attention. Regular cleaning and occasional inspection of the flush components help ensure consistent operation. Choosing models with accessible parts and straightforward designs can minimize maintenance hassles, especially for DIY owners.
What features should I prioritize if I want a comfortable and efficient dual flush toilet?
Prioritize elongated bowls and higher seats, such as ADA height, for added comfort. Look for models with reliable dual flush mechanisms that provide consistent performance. Features like soft-close seats, skirted designs for easy cleaning, and water-saving capabilities enhance overall usability. Balancing these comfort features with your budget will help you select the best fit for daily use.
Is it worth investing in a premium dual flush toilet?
Premium models often include advanced features such as quieter operation, enhanced flushing technology, and improved comfort elements, which can justify the higher cost over time. If you prioritize long-term durability, reduced maintenance, and enhanced convenience, investing in a higher-end model can provide better value. However, for basic needs or tight budgets, mid-range options can still deliver good performance without the extra features.
Conclusion
For most buyers, the Elongated One Piece Toilet with ADA height strikes a good balance of comfort, efficiency, and ease of use, making it a solid overall choice. Those seeking the best value without sacrificing reliability may prefer the Gerber Maxwell Select, which offers dependable dual flush performance at a more accessible price. If budget is a primary concern, the DeerValley Compact One Piece Toilet provides space-saving convenience with the essential dual flush function. For those prioritizing premium features and long-term durability, investing in higher-end models like the HOROW T0338W or St. Tropez Comfort Height can deliver superior comfort and quieter operation. Ultimately, your choice depends on your specific needs—whether it’s comfort, efficiency, space, or budget—and this guide helps clarify which model aligns best with each priority.
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