5 Best Dual Flush Toilets (July 2026) Water-Saving Picks

Switching to the best dual flush toilets is one of the easiest ways a homeowner can cut water usage without sacrificing performance. Our team spent weeks comparing models, digging through verified buyer reviews, and cross-referencing flush ratings to find toilets that genuinely save water while clearing waste in a single press. A quality dual flush mechanism gives you a low-volume rinse for liquid waste and a full-power flush for solids, which can drop household water consumption by thousands of gallons each year.

The EPA estimates that WaterSense-certified high efficiency toilets can save the average family around 13,000 gallons of water and roughly $170 in utility costs annually. That is a meaningful return for a fixture you use dozens of times a day. Whether you are remodeling a master bath, upgrading a cramped powder room, or making a home more accessible for seniors, there is a dual flush toilet built for that specific need.

In this guide, we break down six standout models we would actually install in our own homes. We cover flush power, bowl shape, seat height, rough-in compatibility, and the small details that only show up after months of daily use. By the end, you will know exactly which model fits your bathroom, your budget, and your household.

Top 3 Picks for Best Dual Flush Toilets

Best Dual Flush Toilets in 2026

1. Swiss Madison St. Tropez — Dual Vortex Flush One-Piece

I installed the Swiss Madison St. Tropez in a guest bathroom last year, and the first thing everyone comments on is how clean the silhouette looks. The one-piece construction means there is no seam between tank and bowl where grime collects. The fully skirted trapway hides all the plumbing lines, so a quick wipe leaves the whole unit spotless.

The Dual Vortex flush uses cyclonic rinsing action rather than a single jet, and I noticed the bowl walls stay noticeably cleaner between deep cleans. At 1.1 GPF for the light flush and 1.6 GPF for solids, it hits that sweet spot between water savings and actual clearing power. The comfort height lands around 17 to 19 inches, which my taller guests appreciate.

After six months of daily use, the soft-close seat still operates quietly and the quick-release hinges let me pop the seat off for real scrubbing in seconds. The glossy white ceramic has resisted yellowing and minor scratches better than I expected. Swiss Madison uses a non-porous glaze that genuinely seems to shed stains.

The main frustration is installation. The access holes on the sides are only 3 inches, and reaching the floor bolts in a tight bathroom tested my patience. I also noticed a small gap between the tank lid and tank on one corner, a quality control issue several reviewers mentioned. It does not affect function, but it bugs me aesthetically.

Best Fit for Modern Bathroom Remodels

This toilet shines in a contemporary remodel where clean lines and a seamless silhouette matter. If you are pairing it with a floating vanity and matte black fixtures, the St. Tropez comes in both glossy and matte finishes plus multiple rough-in options to match your layout. The skirted design also makes it a strong pick for anyone who hates scrubbing around exposed trapway curves.

It is less ideal if your bathroom has the water supply line positioned very close to the toilet base, since the skirted side panels can interfere with shutoff valve access.

Flush Reliability Over Time

The vortex flush has stayed consistent through months of use with no clogs in my testing. Some long-term owners report occasional clogging if they use thick toilet paper, so keep that in mind. Replacement parts are available through Swiss Madison directly, though they are not as widely stocked as Kohler or American Standard parts at local hardware stores.

2. HOROW T0338W Compact — Best for Small Bathrooms

The HOROW T0338W solved a problem I have wrestled with for years: finding a toilet that fits a tiny powder room without feeling cramped. At just 26.6 inches deep, this compact one-piece freed up several inches of floor space compared to the old two-piece it replaced. Despite the smaller footprint, it does not feel like a compromise.

The 0.8 GPF light flush is one of the lowest in this roundup, and it still clears liquid waste effectively thanks to the fully glazed 2-inch trapway and siphon action. For solids, the 1.28 GPF full flush hits WaterSense territory. I tracked my water bill for two months after installation and saw a real dip in usage.

The ADA chair height of 17.3 inches makes this surprisingly accessible for a compact toilet. My mother-in-law, who has knee issues, commented that it was easier to use than her supposedly accessible home toilet. HOROW includes a wax ring, floor bolts, and a pre-installed flush valve, which saves a hardware store run.

The catch is installation. The water connection tucks inside the tank, which looks clean but means you are working blind when hooking up the supply line. At 99.2 pounds, this is firmly a two-person lift. The side access holes for the floor bolts are also on the small side, so a socket wrench with an extension is your friend here.

Ideal for Tight Powder Rooms

If your bathroom footprint is under 25 square feet or you are installing a toilet in a basement half-bath, this is the model I would point you toward first. The depth savings alone can be the difference between a door that clears the toilet and one that does not. HOROW also offers a 10-inch rough-in variant for even tighter spaces.

Just confirm your water supply line placement before ordering, since the internal connection needs adequate clearance behind the tank.

HOROW Customer Support Experience

Multiple verified buyers highlight HOROW’s customer service as a standout. One reviewer received a replacement flush valve within days after a minor defect, with no shipping charges. For a brand that is newer to the US market, this level of support matters when you are deciding whether to trust a less established name over Kohler or American Standard.

3. DeerValley DV-1F026 — Budget Skirted One-Piece

DeerValley surprised me with how much toilet you get for under $250. The DV-1F026 delivers a fully skirted one-piece design, a soft-close seat, and a dual flush system that feels like it belongs on a much more expensive unit. I installed one in a rental property and the tenant has had zero complaints about flush performance in over a year.

The skirted design eliminates the nooks and crannies around an exposed trapway, which my cleaning-averse tenant loves. A single wipe down the side handles what used to take scrubbing with a brush. The premium glazed surface has resisted staining and yellowing even with hard water.

At 1.1 GPF for the light flush and 1.6 GPF for the full flush, the water savings are real but not class-leading compared to HOROW’s 0.8 GPF option. The full flush clears solid waste reliably, but the light flush occasionally needs a second press with heavier toilet paper loads. That matches what several verified reviewers noted.

The standard seating height of 16 7/8 inches sits slightly lower than true comfort height models. Taller users may notice the difference when standing up. At 99 pounds, plan for a second person during installation, even with the conveniently large side access holes for floor bolts.

Best Value for a Fully Featured One-Piece

If your priority is getting skirted one-piece aesthetics and a soft-close seat without spending $400-plus, this is the model to beat. You get the design features that usually command a premium from Swiss Madison or Kohler at a fraction of the cost. The included wax ring, seat, and floor bolts mean no extra trips to the hardware store.

The tradeoff is long-term parts availability, since DeerValley is a newer brand with less retail penetration than legacy names.

Considerations for Water Supply Placement

The skirted design requires your water supply valve to be positioned correctly behind the toilet. If your existing shutoff valve sits too high or too far to the side, it may interfere with the skirt panel. Measure from the finished wall to the center of your supply line before ordering to avoid a frustrating installation day.

4. Kohler Wellworth — Round-Front Dual Flush for Small Spaces

The Kohler Wellworth is the dual flush toilet I reach for when a bathroom simply cannot fit an elongated bowl. The round-front design saves about two inches of depth compared to elongated models, which matters enormously in a powder room or a half-bath under a staircase. Kohler’s reputation for reliable engineering means this toilet will still be flushing strong a decade from now.

The Class Five Flush System uses a canister valve rather than a traditional flapper, which delivers a faster, more forceful rush of water into the bowl. I have found that the 1.1 GPF light flush handles liquid waste about 80 percent of the time, and the 1.6 GPF full flush clears solids without a second thought.

The left-hand nested trip lever is a thoughtful touch for bathrooms where the toilet sits against the right wall. Instead of reaching across the tank to flush, the lever falls naturally to hand. The 2-1/8-inch glazed trapway keeps waste moving smoothly and reduces clog frequency.

Be prepared to buy a seat and wax ring separately, since Kohler ships the bowl and tank only. The round-front bowl is less comfortable for extended sitting than an elongated bowl, and the sitting height is lower than ADA comfort height standards. Stock fluctuates, so if you see it available, grab it.

Best for Powder Rooms and Compact Baths

If space is your limiting factor, the round-front Wellworth is purpose-built for tight footprints. It coordinates with Kohler’s broader Wellworth collection, so you can match other bathroom fixtures if you are doing a full Kohler-themed renovation. Plumbers on forums repeatedly recommend Kohler Wellworth and Highline models for their durability and easy parts sourcing.

The tradeoff is comfort, since the round bowl and standard height are not ideal for taller users or anyone with mobility concerns.

Kohler Parts Availability Advantage

One major reason plumbers recommend Kohler is that replacement parts are available everywhere. Every Home Depot and Lowe’s stocks Kohler flush valves, fill valves, and trip levers. If something fails in five years, you will not be hunting for a specialty part from an overseas supplier. That peace of mind is worth the slightly higher price for many buyers.

5. HOROW 17 Inch Comfort Height — Best for Seniors and Tall Users

The HOROW 17 Inch Comfort Height toilet earned the highest rating in our roundup at 4.8 stars, and after installing one for my father, I understand why. The 17-inch chair height meets ADA guidelines and makes sitting down and standing up noticeably easier for anyone with knee, hip, or back issues. My father, who was dreading a bathroom upgrade, called it life-changing.

The MaP 1000g flush rating is the gold standard for waste removal performance. MaP testing measures how many grams of solid waste a toilet can clear in a single flush, and 1,000 grams is the maximum score. In daily use, this means the full flush handles even heavy loads without a second press or a plunge.

The dual flush system gives you 1.1 GPF for liquids and 1.6 GPF for solids, balancing water conservation with raw clearing power. HOROW includes a complete installation kit with the toilet bowl, tank, seat, caps, T-bolts, and wax ring, so there is nothing extra to buy. The soft-close PP seat prevents slamming and the quick-release design makes deep cleaning simple.

The two-piece design does require assembly, but that actually makes it easier to carry and position than a one-piece monster. The 95-pound total weight is split between the bowl and tank, so a reasonably fit person can handle each piece. The lifetime after-sales service gives added confidence in a newer brand.

Best Dual Flush Toilet for Seniors and Tall Adults

If anyone in your household struggles with standard toilet height, this is the model I would install first. The 17-inch rim height is what accessibility guidelines recommend for wheelchair transfer and reduced joint strain. The elongated bowl adds comfort over round-front designs without eating too much extra depth.

HOROW also offers 19-inch and 21-inch variants in this lineup for exceptionally tall users or specific accessibility needs.

Why MaP 1000g Matters for Performance

A MaP score of 1000g means this toilet clears the maximum tested amount of solid waste in a single flush. Many budget toilets score in the 400-600g range, which translates to more double-flushes and plunging. The higher score directly correlates with fewer clogs, less cleaning, and better long-term satisfaction. For a household with heavy usage, that performance gap becomes obvious within weeks.

How to Choose the Best Dual Flush Toilet

Choosing between the best dual flush toilets comes down to five core factors that determine whether a model will work in your specific bathroom. Understanding these before you buy prevents costly returns and installation headaches.

Gallons Per Flush (GPF) Ratings

GPF measures how much water each flush uses. Dual flush toilets offer two settings: a low flush for liquid waste (typically 0.8 to 1.1 GPF) and a full flush for solid waste (typically 1.28 to 1.6 GPF). The EPA WaterSense program certifies toilets that use 1.28 GPF or less, which is your benchmark for high efficiency toilet classification. Models like the HOROW T0338W with a 0.8 GPF light flush maximize savings, while 1.6 GPF full flush models prioritize raw clearing power.

MaP Score and Flush Performance

The Maximum Performance (MaP) test measures how many grams of solid waste a toilet clears in one flush. A score of 500g is acceptable, 800g is strong, and 1000g is the maximum. If your household has heavy usage or you want to minimize clogs, look for MaP scores of 800g or higher. The HOROW 17 Inch Comfort Height hits the 1000g ceiling, which is why it earned our Editor’s Choice badge.

One-Piece vs Two-Piece Design

One-piece toilets like the Swiss Madison St. Tropez and DeerValley DV-1F026 offer seamless, modern looks and easier cleaning since there is no seam between tank and bowl. They are heavier and harder to install solo. Two-piece models like the American Standard H2Option and Kohler Wellworth are easier to carry and position, and they typically cost less, but the seam can collect grime over time.

Rough-In Size Compatibility

The rough-in is the distance from the finished wall to the center of the closet flange (the floor drain). The standard US rough-in is 12 inches, which every model in this roundup accommodates. If you have an older home, you may encounter 10-inch or 14-inch rough-ins. Measure carefully before ordering, since the wrong rough-in means the toilet will not sit flush against the wall or will not fit at all.

Seat Height and ADA Compliance

Standard toilet height sits around 15 inches, while comfort height or chair height models range from 16.5 to 19 inches. ADA-compliant toilets measure 17 to 19 inches from floor to rim. For seniors, tall adults, or anyone with mobility limitations, a comfort height model like the HOROW 17 Inch or HOROW T0338W reduces strain on knees and hips. Round-front bowls save space, while elongated bowls add comfort.

WaterSense Certification and Rebates

Look for the WaterSense label, which means the toilet meets EPA criteria for water efficiency and performance. WaterSense-certified toilets often qualify for local water utility rebates that can offset a significant portion of the purchase price. Check with your water provider before buying, since some rebates require specific models or documentation.

Frequently Asked Questions

Final Thoughts on the Best Dual Flush Toilets

Finding the best dual flush toilets for your home means balancing water savings, flush power, and the physical constraints of your bathroom space. For seniors or tall users, the HOROW 17 Inch Comfort Height with its MaP 1000g rating and ADA compliance is tough to beat. Small bathrooms benefit from the compact HOROW T0338W, while the DeerValley DV-1F026 delivers skirted one-piece style on a budget.

If brand reputation and parts availability matter most, the American Standard H2Option and Kohler Wellworth have decades of trust behind them. For a modern remodel where aesthetics lead, the Swiss Madison St. Tropez brings a sleek silhouette and vortex flush that keeps the bowl cleaner between scrubs.

Whichever model you choose, confirming your rough-in size, water supply placement, and seat height needs before ordering will save you installation headaches. Dual flush technology has matured to the point where you no longer have to choose between saving water and getting a reliable flush, and any of these six models will serve your household well for years to come.