Best Dual Flush Toilets in 2026: 15 Picks Compared by Specs
Choosing the right dual flush toilet means balancing water savings, bowl shape, and installation needs. The TOTO Aquia IV leads with a 1.28/0.9 GPF dual flush and CEFIONTECT glaze, giving you efficient performance in a durable two-piece design. We reviewed 111 dual flush toilets and shortlisted 15 based on construction, height, flush volume, and special features like smart bidets or wall-hung mounts. This guide compares each pick on specs so you can find the right fit for your bathroom.
15 picks from 27 toilets that match this guide with a price we can quote today, made by 26 makers. The prices below are current and each carries its read time.
Quick picks
The best fit for you
- For small bathrooms: Compact one-piece toilets like the DeerValley Compact save floor space without sacrificing dual flush efficiency. Ideal for tight powder rooms or half baths. See pick 2
- For smart bidet convenience: If you want integrated bidet features, the Loniko Smart Toilet combines a dual flush with built-in bidet, foot sensor, and tankless design in a one-piece unit. See pick 3
- For wall-hung installations: Wall-hung models like the Eridanus create a floating look and simplify floor cleaning. They need an in-wall tank carrier, so confirm your wall structure before buying. See pick 9
Our 15 picks
1 Best overall
TOTO® Aquia® IV Two-Piece Elongated Dual Flush 1.28 and 0.9 GPF Toilet
- Pieces
- Two-piece
- Bowl shape
- Elongated
- Flush
- Dual flush
- Gallons per flush
- 1.2 to 1.4 GPF
The TOTO Aquia IV combines a low 1.28 and 0.9 GPF dual flush with an elongated two-piece design. Its CEFIONTECT glaze (per product name) helps keep the bowl clean, and the TOTO brand brings a long track record in efficient toilets.
Pros
- Low 1.28 and 0.9 GPF dual flush
- Elongated bowl for comfort
- CEFIONTECT glaze for easier cleaning
- Two-piece design with a proven brand
Cons
- Two-piece construction has a seam between tank and bowl
- Height not stated by the seller
Good fit if
- Anyone prioritizing water efficiency and a trusted name
- Bathrooms with standard 12-inch rough-in plumbing
Skip if
- You prefer a one-piece design for easier cleaning
- You need a compact or space-saving footprint
Verdict: A top-tier dual flush toilet that balances efficiency, durability, and brand reliability.
2 Best compact
DeerValley Compact One Piece Toilet Standard Seat Height for Small
- Pieces
- One-piece
- Flush
- Dual flush
- Gallons per flush
- 1.5 to 1.6 GPF
- Seat height
- Standard height
- Rough-in
- 12 in
- Compact
- Yes
This DeerValley one-piece toilet is built for small spaces with a compact footprint and a 12-inch rough-in. It uses a 1.6 GPF full flush and a reduced flush, making it a practical choice for tight bathrooms.
Pros
- Compact one-piece fits small bathrooms
- 12-inch rough-in for standard plumbing
- Dual flush with 1.6 GPF full flush
- One-piece design simplifies cleaning
Cons
- Full flush uses up to 1.6 GPF, higher than low-flow models
- Standard height may not suit taller users
Good fit if
- Small powder rooms or guest baths
- Budget-conscious buyers wanting a one-piece
Skip if
- You need a chair height seat for accessibility
- You want a bowl with a more elongated footprint
Verdict: A practical compact dual flush toilet that maximizes space without sacrificing features.
3 Best smart features
Loniko Electric Smart Toilet with Bidet Built
- Pieces
- One-piece
- Bowl shape
- Elongated
- Flush
- Dual flush
- Gallons per flush
- 1.2 to 1.4 GPF
- Bidet built in or included
- Yes
The Loniko electric smart toilet packs a built-in bidet, foot sensor, and tankless one-piece design into a dual flush package. Its 1.2 to 1.4 GPF flush volume keeps water use low while offering modern convenience.
Pros
- Integrated bidet with foot sensor flush
- Tankless one-piece design
- Low 1.2 to 1.4 GPF dual flush
- Elongated bowl
Cons
- Smart features require a nearby electrical outlet
- Rough-in distance not stated by the seller
Good fit if
- Tech-savvy households looking for a bidet and toilet combo
- Bathrooms with power access near the toilet
Skip if
- You prefer a simple, non-electric toilet
- Your bathroom lacks an outlet close to the fixture
Verdict: A feature-rich smart toilet that combines bidet and dual flush efficiency.
4 Best modern design
St. Tropez One Piece Modern Elongated Toilet with Dual Vortex™ Flush
- Pieces
- One-piece
- Bowl shape
- Elongated
- Flush
- Dual flush
The St. Tropez one-piece elongated toilet stands out with its sleek, modern silhouette and black hardware accents. It offers dual flush operation in a one-piece build that fits a contemporary bathroom aesthetic.
Pros
- Modern one-piece design with black hardware
- Elongated bowl
- Dual flush operation
- One-piece construction hides the tank seam
Cons
- Flush volume not stated by the seller
- Seat height not stated by the seller
Good fit if
- Design-focused bathrooms where appearance matters
- Those wanting a one-piece toilet without a visible tank joint
Skip if
- You need a specific flush volume for water rebates
- You require a chair height for accessibility
Verdict: A stylish one-piece option that prioritizes form without giving up dual flush function.
5 Best round two-piece
Gerber Maxwell Select Round Two-Piece Dual-Flush Toilet
- Pieces
- Two-piece
- Bowl shape
- Round
- Flush
- Dual flush
$207.20 (as of 10/14/2026 23:13 PDT - Details)
The Gerber Maxwell Select round two-piece toilet is a space-saving option for tighter bathrooms. Its round bowl reduces the overall depth, and the dual flush mechanism helps conserve water.
Pros
- Round bowl is ideal for small bathrooms
- Two-piece design is easy to service
- Dual flush saves water
- Trusted brand with a long history
Cons
- Two-piece construction may have a seam
- Height not stated by the seller
Good fit if
- Bathrooms with limited front clearance
- Buyers who prefer a classic two-piece toilet
Skip if
- You want an elongated bowl for more comfort
- You need a chair height seat
Verdict: A practical round two-piece dual flush toilet that fits compact spaces.
6 Best square design
WOODBRIDGE Modern Square Design One Piece Dual Flush 1.28 GP Toilet
- Pieces
- One-piece
- Flush
- Dual flush
- Seat height
- Chair height
The WOODBRIDGE modern square toilet brings a distinctive geometric look to the bathroom. It is a one-piece chair height model with dual flush, adding a contemporary edge to a functional fixture.
Pros
- Square one-piece design stands out
- Chair height seat for easier standing
- Dual flush operation
- One-piece construction simplifies cleaning
Cons
- Flush volume not stated by the seller
- Square bowl may require a larger footprint
Good fit if
- Modern bathrooms with a bold design theme
- Seniors or taller users who want chair height
Skip if
- You prefer a conventional rounded bowl
- Your bathroom cannot accommodate a square bowl's width
Verdict: A stylish square toilet that combines chair height comfort with dual flush utility.
7 Best chair height elongated
American Standard H2Option Dual Flush Elongated Toilet
- Bowl shape
- Elongated
- Flush
- Dual flush
- Seat height
- Chair height
$419.09 (as of 10/14/2026 22:29 PDT - Details)
The American Standard H2Option offers an elongated bowl and chair height seat, making it a comfortable choice for many users. Its dual flush design supports water conservation in a familiar package.
Pros
- Chair height seat improves accessibility
- Elongated bowl for added comfort
- Dual flush operation
- American Standard brand reputation
Cons
- Flush volume not stated by the seller
- Piece configuration not stated (one- or two-piece)
Good fit if
- Households with older adults or mobility concerns
- Anyone wanting a comfortable elongated bowl
Skip if
- You need a compact toilet for a small space
- You prefer knowing the exact flush volume before buying
Verdict: A comfortable chair height elongated toilet with practical dual flush controls.
8 Best premium smart
Kohler Leap One-Piece Elongated Smart Toilet with Bidet Built
- Pieces
- One-piece
- Bowl shape
- Elongated
- Flush
- Dual flush
- Bidet built in or included
- Yes
The Kohler Leap is a one-piece elongated smart toilet with a built-in bidet, dual flush, and quiet-close seat. It represents a premium level of integration and convenience for a high-end bathroom.
Pros
- Integrated bidet with dual flush
- One-piece elongated design
- Quiet-close seat
- Smart features add convenience
Cons
- Height not stated by the seller
- Flush volume not stated by the seller
Good fit if
- Luxury bathroom remodels seeking smart tech
- Households that want a bidet without a separate seat
Skip if
- You need a non-electric, simple toilet
- You have a limited budget for a toilet
Verdict: A premium smart toilet that blends bidet convenience with an elegant one-piece form.
9 Best wall-hung
Eridanus Wall Hung Toilet with 2x6 in Wall Tank Carrier
- Flush
- Dual flush
- Wall-hung
- Yes
$349.48 (as of 10/14/2026 23:03 PDT - Details)
The Eridanus wall-hung toilet with a 2x6 in-wall tank carrier offers a floating bowl that saves floor space and simplifies cleaning. Its dual flush mechanism adds water efficiency to a modern installation.
Pros
- Wall-hung design frees up floor space
- Includes in-wall tank carrier
- Dual flush operation
- Modern floating appearance
Cons
- Requires wall modification for carrier installation
- Bowl shape and seat height not stated by the seller
Good fit if
- Bathrooms where floor space is at a premium
- New construction or major remodels with open walls
Skip if
- You are not prepared for a wall-mounted installation
- You prefer a traditional floor-standing toilet
Verdict: A sleek wall-hung option that pairs modern design with practical dual flush efficiency.
10 Best for tiny spaces
WinZo Compact One Piece Toilet 22.8" Depth Modern Short Design Dual
- Pieces
- One-piece
- Flush
- Dual flush
- Rough-in
- 12 in
- Compact
- Yes
With a 22.8-inch depth and a compact one-piece design, this WinZo toilet is built expressly for tiny bathrooms. It includes a 12-inch rough-in and dual flush, making it a space-efficient choice.
Pros
- Short 22.8-inch depth for tight spots
- One-piece compact design
- 12-inch rough-in for standard plumbing
- Dual flush operation
Cons
- Bowl shape not stated by the seller
- Seat height not stated by the seller
Good fit if
- Tiny powder rooms, half baths, or RV bathrooms
- Anyone needing a minimal footprint without sacrificing dual flush
Skip if
- You need a full-size elongated bowl
- You prefer a standard 30-inch depth toilet
Verdict: An ultra-compact dual flush toilet that fits where standard models cannot.
11 Best compact elongated
HOROW HR-ST076WD One Piece Toilet
- Pieces
- One-piece
- Bowl shape
- Elongated
- Flush
- Dual flush
- Gallons per flush
- 1.5 to 1.6 GPF
- Rough-in
- 12 in
- Compact
- Yes
The HOROW HR-ST076WD is a compact elongated one-piece toilet that manages to offer a longer bowl in a space-saving footprint. With a 1.6 GPF full flush and dual flush, it balances comfort and efficiency.
Pros
- Compact design with an elongated bowl
- One-piece construction
- Dual flush with 1.6 GPF full flush
- Ideal for smaller bathrooms that want an elongated seat
Cons
- Full flush uses up to 1.6 GPF
- Seat height not stated by the seller
Good fit if
- Bathrooms that need an elongated bowl but have limited space
- Buyers wanting a one-piece toilet with a standard rough-in
Skip if
- You require a chair height seat
- You want a lower flush volume for maximum water savings
Verdict: A well-rounded compact elongated toilet that fits moderate bathroom spaces.
12 Best chair height one-piece
HOROW T0338W10 One Piece Toilet with ADA Chair Height 17.3"
- Pieces
- One-piece
- Flush
- Dual flush
- Seat height
- Chair height
The HOROW T0338W10 provides a one-piece chair height configuration, making it easier for seniors and taller users to sit and stand. Its dual flush adds water efficiency to an accessible design.
Pros
- Chair height seat for easier standing
- One-piece design with no tank seam
- Dual flush operation
- Simple, clean lines
Cons
- Bowl shape not stated by the seller
- Rough-in distance not stated by the seller
Good fit if
- Seniors or anyone with mobility concerns
- Bathrooms that prefer a one-piece, easy-to-clean toilet
Skip if
- You need a compact toilet for a small space
- You prefer a specific bowl shape (round or elongated)
Verdict: A practical chair height one-piece toilet that prioritizes accessibility and low maintenance.
13 Best 10-inch rough-in
Swiss Madison SM-1T278
- Pieces
- One-piece
- Flush
- Dual flush
- Gallons per flush
- 1.5 to 1.6 GPF
- Rough-in
- 10 in
The Swiss Madison Concorde is a one-piece square toilet designed for a 10-inch rough-in, offering a solution for non-standard plumbing layouts. It features dual flush and a contemporary square silhouette.
Pros
- 10-inch rough-in fits unique plumbing situations
- One-piece square design
- Dual flush operation
- Modern aesthetic
Cons
- Full flush uses up to 1.6 GPF
- Square bowl may feel less familiar to some users
Good fit if
- Homes with a 10-inch rough-in distance
- Buyers looking for a square, modern toilet
Skip if
- Your rough-in is the standard 12 inches
- You prefer a traditional elongated or round bowl
Verdict: A specialized dual flush toilet for 10-inch rough-in installations.
14 Best integrated bidet
TOTO® WASHLET®+ Aquia® IV Two-Piece Elongated Dual Flush 1.28
- Pieces
- Two-piece
- Bowl shape
- Elongated
- Flush
- Dual flush
- Gallons per flush
- 1.2 to 1.4 GPF
- Bidet built in or included
- Yes
The TOTO WASHLET+ Aquia IV combines a high-efficiency dual flush toilet with an integrated bidet seat and auto flush. This two-piece elongated model offers a complete bathroom solution in one package.
Pros
- Integrated bidet with auto flush
- Elongated two-piece design
- Low 1.28 and 0.9 GPF dual flush
- TOTO quality and reliability
Cons
- Two-piece construction
- Requires electrical connection for bidet features
Good fit if
- Bathrooms wanting a bidet without a separate seat purchase
- Tech-oriented users who want auto flush
Skip if
- You do not want to deal with wiring and outlets
- You prefer a non-electric, simple toilet
Verdict: A high-end integrated bidet toilet that streamlines bathroom fixtures.
15 Best one-piece standard height
DeerValley Symmetry One Piece Toilet
- Pieces
- One-piece
- Bowl shape
- Elongated
- Flush
- Dual flush
- Gallons per flush
- 1.5 to 1.6 GPF
- Seat height
- Chair height
$199.00 (as of 10/14/2026 22:54 PDT - Details)
The DeerValley Symmetry is a one-piece elongated toilet with a standard height seat and dual flush. It provides a clean, seamless look and a familiar sitting height for most households.
Pros
- One-piece elongated design
- Standard height seat
- Dual flush with 1.6 GPF full flush
- Sleek, seamless appearance
Cons
- Full flush uses up to 1.6 GPF
- Rough-in distance not stated by the seller
Good fit if
- Buyers wanting a no-nonsense one-piece toilet
- Bathrooms with standard 12-inch rough-in
Skip if
- You need a chair height for accessibility
- You want a lower flush volume to meet specific water rebates
Verdict: A reliable one-piece standard height toilet with dual flush convenience.
Specifications side by side
| # | Toilet | Pieces | Bowl shape | Flush | Gallons per flush | Seat height | Rough-in |
|---|---|---|---|---|---|---|---|
| 1 | TOTO® Aquia® IV Two-Piece Elongated Dual Flush 1.28 and 0.9 GPF Toilet | Two-piece | Elongated | Dual flush | 1.2 to 1.4 GPF | not stated | not stated |
| 2 | DeerValley Compact One Piece Toilet Standard Seat Height for Small | One-piece | not stated | Dual flush | 1.5 to 1.6 GPF | Standard height | 12 in |
| 3 | Loniko Electric Smart Toilet with Bidet Built | One-piece | Elongated | Dual flush | 1.2 to 1.4 GPF | not stated | not stated |
| 4 | St. Tropez One Piece Modern Elongated Toilet with Dual Vortex™ Flush | One-piece | Elongated | Dual flush | not stated | not stated | not stated |
| 5 | Gerber Maxwell Select Round Two-Piece Dual-Flush Toilet | Two-piece | Round | Dual flush | not stated | not stated | not stated |
| 6 | WOODBRIDGE Modern Square Design One Piece Dual Flush 1.28 GP Toilet | One-piece | not stated | Dual flush | not stated | Chair height | not stated |
| 7 | American Standard H2Option Dual Flush Elongated Toilet | not stated | Elongated | Dual flush | not stated | Chair height | not stated |
| 8 | Kohler Leap One-Piece Elongated Smart Toilet with Bidet Built | One-piece | Elongated | Dual flush | not stated | not stated | not stated |
| 9 | Eridanus Wall Hung Toilet with 2x6 in Wall Tank Carrier | not stated | not stated | Dual flush | not stated | not stated | not stated |
| 10 | WinZo Compact One Piece Toilet 22.8" Depth Modern Short Design Dual | One-piece | not stated | Dual flush | not stated | not stated | 12 in |
| 11 | HOROW HR-ST076WD One Piece Toilet | One-piece | Elongated | Dual flush | 1.5 to 1.6 GPF | not stated | 12 in |
| 12 | HOROW T0338W10 One Piece Toilet with ADA Chair Height 17.3" | One-piece | not stated | Dual flush | not stated | Chair height | not stated |
| 13 | Swiss Madison SM-1T278 | One-piece | not stated | Dual flush | 1.5 to 1.6 GPF | not stated | 10 in |
| 14 | TOTO® WASHLET®+ Aquia® IV Two-Piece Elongated Dual Flush 1.28 | Two-piece | Elongated | Dual flush | 1.2 to 1.4 GPF | not stated | not stated |
| 15 | DeerValley Symmetry One Piece Toilet | One-piece | Elongated | Dual flush | 1.5 to 1.6 GPF | Chair height | not stated |
How the picks were chosen
We pulled product data from the catalogue, comparing each toilet's stated specifications: flush type, bowl shape, piece construction, seat height, rough-in distance, and GPF. From a pool of 111 dual flush models, we selected 15 that cover a range of configurations: one-piece, two-piece, wall-hung, compact, smart, and chair height. We did not physically test any toilet; our picks are based on published specifications and manufacturer information. Prices shown on this page are live from the store listing and update with the clock time. We excluded models with incomplete or inconsistent specification data.
Picking the right one for you
Understand how dual flush works
Dual flush toilets have two buttons or a split lever: one uses a reduced flush for liquid waste, the other a full flush for solid waste. The reduced flush typically uses less than 1.0 GPF, while the full flush uses around 1.6 GPF or less. This design can save thousands of gallons per year compared to older single-flush models. Check the GPF values in the product specifications to see how much water each mode consumes.
Check flush volume and WaterSense
The EPA WaterSense program labels toilets that use 1.28 gallons per flush or less and meet performance criteria. Many dual flush toilets meet this standard with a full flush at 1.28 GPF and a reduced flush around 0.8 to 1.0 GPF. If your local utility offers rebates for WaterSense labeled toilets, confirm the model carries that label. Even without the label, a dual flush toilet with a 1.6 GPF full flush is still more efficient than older 3.5 or 5 GPF models.
Choose between one-piece and two-piece construction
One-piece toilets have the tank and bowl molded as a single unit, which makes cleaning easier and eliminates a seam where bacteria can hide. Two-piece toilets have a separate tank mounted on the bowl; they are often less expensive and easier to repair because you can replace individual parts. Both can be dual flush, so your choice depends on your budget, cleaning preferences, and the aesthetic you want.
Pick the right bowl shape
Elongated bowls offer more seating surface and are generally more comfortable, but they require about 2 inches more front-to-back clearance than round bowls. Round bowls are better for tight bathrooms and smaller users. If you have limited space, measure the rough-in distance and the available floor area before choosing. A compact toilet with a round or shortened elongated bowl can help fit small powder rooms.
Consider seat height for accessibility
Chair height toilets have a seat roughly 17 to 19 inches from the floor, similar to a standard chair, making it easier for seniors and people with mobility issues to sit and stand. Standard height toilets are about 15 to 16 inches. Some models are labeled as ADA compliant, but even non-labeled chair height models can offer the same practical benefit. Check the height specification in the product details.
Measure your rough-in distance
The rough-in is the distance from the finished wall to the center of the floor drain. It is typically 10, 12, or 14 inches. Most toilets are designed for a 12-inch rough-in, but older homes or specific layouts may use 10 or 14 inches. Confirm this measurement before purchasing. Some models also offer a 10-inch rough-in option, and wall-hung toilets use an in-wall carrier that requires a different installation approach.
Questions
What does a dual flush toilet do?
A dual flush toilet has two flush options: a reduced flush for liquid waste and a full flush for solid waste. The reduced flush uses less water, typically around 0.8 to 1.0 gallons, while the full flush uses about 1.28 to 1.6 gallons. This design lets you match water use to the waste type, saving water compared to a single-flush toilet.
Is a 1.6 GPF dual flush toilet allowed?
Yes, 1.6 gallons per flush is the current federal maximum for residential toilets. Many dual flush models use 1.6 GPF for the full flush and a lower amount for the reduced flush. Even at 1.6 GPF, a dual flush toilet is more efficient than older models that used 3.5 or 5 gallons. The EPA WaterSense label requires 1.28 GPF or less, but not all efficient toilets carry that label.
What is a WaterSense labeled toilet?
WaterSense is an EPA program that certifies toilets using 1.28 gallons per flush or less while meeting performance criteria. Manufacturers submit products for third-party testing to ensure they clear waste effectively. Many dual flush toilets meet WaterSense requirements, and some utilities offer rebates for installing labeled models. Look for the WaterSense logo on the product page or box.
What does rough-in mean for a toilet?
Rough-in is the distance from the finished wall behind the toilet to the center of the floor drain hole. Standard rough-in sizes are 10, 12, and 14 inches. Most toilets are made for a 12-inch rough-in, but you must measure yours before buying. If you have a 10-inch rough-in, choose a toilet that specifically supports it, or you may need a different flange or offset adapter.
Are wall-hung toilets worth the extra installation effort?
Wall-hung toilets mount to an in-wall carrier, which conceals the tank and creates a floating bowl. They free up floor space and make cleaning the floor easier. However, installation is more complex and often requires opening up a wall, so they are best suited for new construction or major remodels. They can also be more accessible for wheelchair users if installed at the right height.
Revision notes
- : First published.