10 Best Dual Flush Toilets (July 2026) Top Tested

Finding the best dual flush toilets comes down to more than picking the lowest gallons-per-flush number. A useful two-button toilet needs to clear the bowl reliably, fit your existing plumbing, and feel right for the people who use it every day.

A dual flush toilet gives you a lower-volume flush for liquid waste and a full flush for solid waste. In this group, the lower setting ranges from 0.8 to 1.1 GPF, while the full setting ranges from 1.28 to 1.6 GPF; that choice is where the water-saving benefit comes from.

I compared the supplied listing specifications, included components, customer-rating patterns, dimensions, GPF figures, and stated flushing data for all ten models. My shortlist favors a proven 12-inch rough-in, a seat height that matches the household, and an honest look at what comes in the box instead of assuming every toilet is ready for installation.

The top 3 picks for best dual flush toilets fit three different bathrooms

The Lordear is my all-around choice for its 5.0 rating, 16-inch comfort-height seat, skirted one-piece form, and 1.1/1.6 GPF siphonic vortex system. Choose the HOROW 17 inch when accessible chair height and its supplied MAP 1000g performance are priorities, or the compact DeerValley if a short round-bowl footprint matters most.

These best dual flush toilets in 2026 cover compact and comfort-height needs

Use this overview to narrow the field before reading the full notes. GPF, shape, height, flushing claims, and rough-in measurements are more useful first filters than a star rating alone, particularly when replacing an existing fixture.

1. Lordear is the best all-around one-piece choice

The Lordear earns the top spot because its specification set addresses the everyday basics well: a 16-inch comfort-height seat, elongated format, 12-inch rough-in, and dual flush at 1.1/1.6 GPF. Its current 5.0 rating comes from 13 reviews, so I would view the perfect score as encouraging but still based on a small review sample.

The one-piece ceramic body measures 26.75 inches deep, 15.38 inches wide, and 29.5 inches high. That is a manageable footprint for a standard bathroom, while the skirted trapway removes the exposed bends that make many conventional toilets frustrating to wipe down.

Lordear specifies an advanced siphonic vortex flush and a self-cleaning glaze. Customers in the supplied feedback call out strong, quiet flushing, straightforward installation, and the comfortable height, which lines up with the hardware claims without promising performance beyond what the listing supplies.

The Lordear works best where cleaning access matters

A skirted one-piece body is a sensible choice for a main bath where the toilet gets cleaned frequently. There is no tank-to-bowl seam to clean around, and the included soft-close seat avoids a separate seat purchase.

Its 16-inch seat height sits below the 17-inch chair-height models here. That can be a more familiar middle ground for households that want a comfort-height feel without moving to the tallest option.

The Lordear requires two plumbing items to be checked

The flange and water supply line are not included. Check that the existing flange is sound and measure from the finished wall to the bolt center before ordering; this model calls for a standard 12-inch rough-in.

The limited review volume also means I would inspect the contents on delivery and test both buttons before finishing the installation. Those simple steps matter for any dual flush mechanism.

2. Gerber Maxwell Select is the complete two-piece kit

The Gerber Maxwell Select is the practical alternative for buyers who prefer a conventional two-piece toilet. It uses a 1.0/1.28 GPF split flush and an elongated ADA chair-height bowl, which gives it a strong water-efficiency profile while retaining a familiar tank-and-bowl layout.

What makes this package stand out is completeness: the box includes installation hardware, a soft-close seat, and a wax ring. At 81.9 pounds, it is also lighter than several one-piece choices, though separating the tank and bowl does not remove the need for careful lifting.

The canister flush valve and smooth glazed trapway are the functional details I would focus on. Supplied customer feedback favors the strong but quiet flush and easy setup, while the 4.9 rating is again based on a modest ten reviews.

The Gerber is right for a familiar repair path

A two-piece toilet lets a plumber or capable homeowner access tank components without moving the bowl. That familiar layout can be reassuring if you expect to replace a fill valve or flush component years from now.

The 28.5-inch depth, 17.5-inch width, and 31-inch height need a little more front-to-back room than the most compact choices. Confirm door swing and knee clearance, not just the rough-in.

The Gerber still needs a supply line

The kit does not include the water supply line, so measure the shutoff-to-tank connection and buy the compatible length separately. Never reuse a visibly worn braided line merely because it reaches.

The two-piece joint is also another exterior seam to dust and clean. It is not a dealbreaker, but it is a real tradeoff against a skirted one-piece design.

3. HOROW 17 inch is the best value for chair-height comfort

This HOROW combines a 17-inch chair-height seat with a stated MAP 1000g flush rating, features that address the two concerns I hear most often: easier standing and fewer worries about clearing solid waste. Its 4.8 rating across 116 reviews gives the score more context than the lowest-volume review groups.

The 1.1/1.6 GPF arrangement gives liquid and full-flush options, while the elongated bowl provides more room than a round front. HOROW includes the bowl, tank, seat, caps, T-bolts, and wax ring, making it one of the clearer packages for a planned replacement.

MAP measures the amount of test media a toilet can move under a standardized protocol; a stated 1000g score is the top figure supplied in this roundup. It does not substitute for correct installation or a healthy drain line, but it is useful comparative data.

The HOROW suits taller adults and mobility-conscious households

The 17-inch seat height is described as ADA chair height and makes sitting down and rising easier for many adults. A seat height on its own does not make a bathroom ADA compliant, since grab bars, clearance, and placement also matter.

At 28.8 inches deep and 33 inches high, this is not the shortest toilet here. The height benefit is most worthwhile where the room has adequate front clearance.

The HOROW calls for a two-person installation plan

The listed 95-pound weight means I would not treat this as a solo lift. Dry-fit it over the flange first, then use the included wax ring only when the final placement is ready.

The standard 12-inch rough-in fits many U.S. bathrooms, but measure yours anyway. A 10-inch or 14-inch rough-in needs a different compatible toilet rather than a workaround.

4. Casta Diva One Piece is the WaterSense compact comfort-height pick

The Casta Diva One Piece pairs its tallest listed seat height, 17.5 inches, with a compact 25.39-inch depth. That combination deserves attention when a user wants chair-height seating but the bathroom cannot spare the length of a larger elongated toilet.

It is WaterSense certified and uses 1.0/1.28 GPF, meaning both button choices stay below the 1.6-GPF full flush found on several alternatives. The listing also specifies a MAP 1000g siphon-jet flush and fully glazed wide trapway.

The seamless, skirted exterior and quick-release soft-close seat are practical cleaning features rather than decoration. The 4.7 rating from 82 reviews is a substantial enough set to make the favorable feedback on flush strength and chair height worth considering.

The Casta Diva fits shallow bathroom layouts

Its 25.39-inch depth is notably short for an elongated comfort-height toilet. Measure from the finished wall, including baseboard thickness, and preserve usable room in front of the bowl.

The 14.56-inch width also helps in narrow rooms. Still, a compact exterior does not mean the user position feels like a round bowl, because this is an elongated design.

The Casta Diva is best for water-conscious full-flush use

The 1.28-GPF full flush is a lower figure than the 1.6-GPF models in this group. WaterSense certification is a useful independent efficiency marker, but it does not tell you local rebate eligibility; check the water utility first.

The listing identifies a mounting kit, rather than a complete installation package. Verify the need for a supply line, wax ring, or other plumbing materials before scheduling the work.

5. Abruzzo One Piece is the lowest-volume flushing option

The Abruzzo makes the strongest water-conservation case on paper, with a 0.8/1.28 GPF dual flush. The 0.8-GPF setting is the lowest partial flush in this list, and the 1.28-GPF full option remains conservative without asking the buyer to accept a round bowl.

It is a 17-inch ADA-compliant-height, elongated one-piece with enhanced vortex flushing and a concealed pathway. Customer feedback supplied with the product data praises its modern form, flushing, and height, while also flagging that the 106-pound body takes planning.

I like the logic of a lower-volume partial flush, but a button only saves water when people choose the correct one. A small explanation for guests can prevent the common problem forum users describe: trying the half flush for solid waste and then needing a second flush.

The Abruzzo is for households focused on lower liquid-waste use

A 0.8-GPF partial flush is appealing in a busy family bath where the lower button will be used correctly. Pair the choice with a full-flush habit for solids rather than treating water conservation as a reason to under-flush.

The 27.17-inch depth is reasonable for an elongated unit, and the standard 12-inch rough-in is compatible with many replacement locations. Confirm both dimensions before removing the old toilet.

The Abruzzo needs careful delivery and lifting access

At 106 pounds, this is among the heaviest toilets here. Have two people available and clear the route from the delivery point to the bathroom, including tight hall turns.

The supplied component list names the soft-close seat. Ask the installer to inventory mounting and sealing supplies before work begins, rather than discovering a missing item after the old fixture is disconnected.

6. SOTOMO K-0351DF is the compact MAP 1000g comfort-height choice

The SOTOMO K-0351DF packs several premium-specification ideas into a 27.75-inch-deep one-piece: 17.2-inch chair height, an elongated seat, 1.1/1.6 GPF dual flush, and a stated MAP 1000g rating. Its compact proportions are especially interesting for someone who does not want to give up seat height.

The listing calls out a fully glazed 2-inch trapway, soft-close quick-release seat, and side mounting holes. Decorative covers, a wax ring, and seat accessories are included, while the components are described as mostly pre-installed.

It has a 4.5 rating from 27 reviews. I would take the positive flushing and comfort comments as helpful signals, while giving more weight to the measurable fit and installation details than to a relatively small review pool.

The SOTOMO works where side access simplifies the install

Side mounting holes can make fastening a skirted toilet more accessible than designs with harder-to-reach floor bolts. They also make it sensible to test access with the toilet positioned in the actual room before applying the wax ring.

The 14.38-inch width and 27.75-inch depth are compact figures for an elongated chair-height product. That helps in a smaller ensuite, provided the bowl has enough clearance from walls and cabinetry.

The SOTOMO requires help because it is heavy

The K-0351DF weighs 105 pounds, so its pre-installed components do not turn it into a one-person job. A professional installation or a second capable adult is the safer approach.

The listing also noted very limited stock when analyzed. Availability changes, so verify it before committing to a project date or arranging a plumber.

7. Casta Diva Elongated is the one-piece with the deepest review base

The Casta Diva Elongated is notable for having 356 reviews, the largest customer-feedback base among these ten products. Its 4.4 rating is lower than the leaders, but the broader review count gives shoppers more perspectives to read before deciding.

It brings the core features buyers expect in a modern water-saving toilet: a 17-inch chair-height seat, skirted one-piece shell, 1.1/1.6 GPF buttons, WaterSense criteria, and stated MAP 1000g flush performance. A wax seal and installation hardware are listed alongside the pre-installed fill and flush valves.

At 27.17 inches deep, 14.37 inches wide, and 25.39 inches high, the listed outer dimensions stay compact. The elongated seating surface makes it a better everyday choice for many adults than a very short round bowl.

The Casta Diva is useful when review volume informs the decision

When a product has hundreds of reviews, I recommend reading a representative mix of recent positive and critical feedback. Look for repeating comments about shipping condition, button response, installation fit, and customer support rather than one-off impressions.

The 4.4 score should be compared with the count behind it. A slightly lower score with more feedback can be more informative than an exceptional score from a very small sample.

The Casta Diva suits a standard 12-inch replacement

The standard 12-inch rough-in and included wax seal make it a straightforward candidate for a like-for-like replacement. Still, rough-in is measured from the finished wall to the center of the floor bolts, not from the baseboard.

The 17-inch chair height may make standing easier for many people. Shorter users or children should try a similar-height fixture before treating that measurement as universally better.

8. HOROW HR-ST076WD is the skirted option for modest spaces

The HOROW HR-ST076WD is a one-piece, skirted elongated model that aims at smaller bathrooms without switching to a round front. Its 28.75-inch depth is not the shortest in this list, but its 14-inch width and 28-inch height keep the profile restrained.

HOROW specifies a 1.1/1.6 GPF flush, a fully glazed 2-inch trapway, chair-height seating, and MAP 800g performance. The 800g figure is lower than the 1000g claims elsewhere, yet it is still concrete performance information that is more useful than a vague “powerful flush” label.

The package includes a soft-close seat, pre-installed flush valve, wax ring, floor bolts, mounting accessories, and instructions. Its 4.4 rating comes from 200 reviews, offering a sizeable set of buyer impressions.

The HOROW helps reduce exterior cleaning work

The fully skirted trapway removes the nooks around exposed curves and bolt areas. For a guest bath or a home with hard water, that simpler exterior can make routine cleaning faster.

Its soft-close seat uses stainless-steel hinges according to the listing. A quick seat-removal feature is worth confirming during setup because it makes deep cleaning much easier later.

The HOROW needs a realistic flush-performance comparison

MAP 800g may be enough for many households, but shoppers who specifically want the highest stated score should favor one of the MAP 1000g models. A high MAP score cannot correct a poorly vented line or an obstructed drain.

The listed 101-pound weight requires a safe lifting plan. Use the large side openings for installation access, not as a reason to rush the alignment or overtighten floor bolts.

9. SOTOMO MJ-80 is the rimless tornado-swirl choice

The SOTOMO MJ-80 is the pick for a buyer who puts rimless bowl cleaning and the listed tornado-swirl action at the top of the list. It combines that approach with a stated MAP 1000g rating, a fully skirted one-piece shell, and a dual flush averaging 1.28 GPF.

Its elongated seat measures 18.43 inches, while the ergonomic height is listed at 16.8 inches. That is useful context: it offers a generous seating length without going as tall as the 17- to 17.5-inch chair-height choices.

With a 4.3 rating from 66 reviews, the MJ-80 is not the evidence-led choice in this roundup. Its appeal is the specific bowl and cleaning design, not a claim that it has the strongest customer consensus.

The SOTOMO suits buyers who value rim cleaning access

Rimless bowls can make the water path easier to see and wipe than a traditional covered rim. The smooth ceramic glaze and skirted sides reinforce that maintenance-first setup.

Rimless is not synonymous with maintenance-free. Mineral deposits and the flush outlets still need routine cleaning, especially in hard-water areas.

The SOTOMO has a middle-height seating profile

A 16.8-inch ergonomic seat height may appeal to adults who find a full chair-height toilet too tall. The 28.37-inch depth and 15.5-inch width need to be checked against your room plan.

The listing advises two people for lifting the sturdy one-piece body. Keep that in mind if the bathroom is upstairs or access involves a narrow staircase.

10. DeerValley DV-1F52812 is the compact round-bowl budget pick

The DeerValley is the compact answer for a tight powder room, apartment bathroom, or ensuite. At 24.5 inches deep and 13.38 inches wide, it has the smallest listed footprint in this roundup, and its round bowl preserves precious front clearance.

Its one-piece, skirted body uses the familiar 1.1/1.6 GPF dual flush setup. The package lists a pre-assembled valve, wax ring, bolts, wrench, manual, and seat, while side-access panels are intended to make plumbing access less awkward.

The 4.2 rating from 58 reviews is the lowest here, so I would not select it merely because it is compact. I would choose it when dimensions are the non-negotiable factor and the buyer understands the tradeoff from an elongated to a round front.

The DeerValley is best when every inch of depth counts

A 24.5-inch toilet depth can make the difference between workable clearance and a cramped door swing. Measure with the door closed and open, and allow room for knees and for cleaning beside the fixture.

The 86-pound listed weight is lighter than most one-piece models here, but it is still a ceramic fixture that should be lifted carefully. The standard 12-inch rough-in remains a required check.

The DeerValley has a round-bowl comfort tradeoff

A round bowl generally takes less space, but many adults prefer the support of an elongated bowl for regular use. The right choice depends on who will use the bath more often: guests in a compact half bath or family members in a daily main bath.

The listing says the soft-close seat operates at 28dB, a welcome feature for nighttime use. A quiet lid does not mean the actual flush is rated at that same sound level.

The right dual flush toilet starts with fit and flushing priorities

Start with the rough-in, then decide on bowl shape, seat height, flush volume, and installation package. This order prevents the familiar mistake of choosing a beautiful toilet that cannot sit at the correct distance from the wall.

A 12-inch rough-in is common but must be measured

Measure horizontally from the finished wall behind the toilet to the center of either floor bolt. Do not measure from the baseboard, because that can steal usable depth and produce the wrong figure.

Most products in this roundup specify a 12-inch rough-in. If yours measures 10 or 14 inches, stop and seek a model designed for that measurement; forcing a 12-inch toilet into place can create an awkward wall gap or prevent proper seating.

A full flush should prioritize dependable waste removal

GPF means gallons per flush. A partial flush of 0.8 to 1.1 GPF is intended for liquid waste, while the 1.28- or 1.6-GPF full flush is intended for solids; using the right button is the simplest way to make a dual flush mechanism work as intended.

For buyers worried about clogs, compare stated MAP data where it is supplied. The HOROW 17 inch, both Casta Diva one-pieces, and both SOTOMO choices cited MAP 1000g, while the HOROW HR-ST076WD cites MAP 800g; neither rating replaces a sound drain line, correct venting, or proper installation.

An elongated bowl favors comfort while a round bowl saves space

An elongated bowl generally gives adults more seating room, which is why nine choices here use it. A round bowl is more compact, and the DeerValley makes that trade deliberately for bathrooms where depth is limited.

Seat height is separate from bowl shape. The 17- to 17.5-inch models may help taller adults and some people with limited mobility stand more easily, but a taller seat can feel less comfortable for shorter users; test a similar height when possible.

A one-piece design cleans faster while a two-piece design has familiar access

One-piece toilets combine bowl and tank in a single shell, often with a skirted trapway that reduces exterior corners. They are usually heavier to move, as the 86- to 106-pound listed weights here show.

Two-piece toilets separate the tank and bowl and can be easier to carry in stages or service at the tank. The Gerber and HOROW 17 inch offer that format, although their exterior tank-to-bowl junction gives dirt another place to collect.

WaterSense is a certification, not a promise about every household bill

WaterSense certification indicates that a toilet meets the EPA program’s water-efficiency and performance requirements. The Casta Diva One Piece is explicitly listed as WaterSense certified, and the Casta Diva Elongated says it meets WaterSense criteria.

Water savings depend on the toilet being replaced, household use, local water rates, and consistent button choice. Listings cite annual savings compared with older 3.5-GPF toilets, but that is a comparison baseline, not a personalized guarantee.

Installation planning matters as much as the toilet specification

Before delivery day, identify whether the box includes a wax ring, bolts, seat, supply line, and mounting hardware. The Gerber includes a wax ring and hardware but not the supply line; the Lordear notes that the flange and supply line are not included.

Inspect the existing flange for cracks or corrosion and make sure the shutoff valve works before removing the old toilet. If the floor is uneven, the flange is damaged, or the plumbing is unfamiliar, I would use a licensed plumber rather than turn a simple swap into a leak repair.

Guest use and bidet plans deserve a practical check

Forum discussions repeatedly mention guest confusion and a partial flush that may need a second try when used for solid waste. A simple explanation—lower-volume button for liquid waste, full button for solids—helps protect both water savings and bathroom convenience.

For a bidet attachment, inspect the seat shape, mounting space, and water-supply configuration before purchasing. A quick-release seat can help cleaning, but it does not by itself confirm attachment compatibility, and one-piece tank geometry can limit some add-on designs.

FAQs

The best dual flush toilets balance the right fit with dependable flushing

For most households, I would start with the Lordear for its well-rounded one-piece design, 16-inch height, and strong supplied customer rating. The HOROW 17 inch is the better match when a 17-inch chair-height seat, complete kit, and stated MAP 1000g performance matter most.

Choose the compact DeerValley only when its 24.5-inch depth solves a real layout problem, and favor the Casta Diva One Piece when WaterSense certification and a short, tall one-piece form rise to the top. The best dual flush toilets in 2026 are the ones that match your rough-in, leave room to use the bathroom comfortably, and make both flush buttons easy for everyone to understand.