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12 Best Dual Flush Toilets of September 2025 | Lab-Tested & Rated

By: Susie
Updated On: September 5, 2025

We spent three months testing dual flush toilets in real homes to find models that actually deliver on their water-saving promises. After analyzing flush performance, water efficiency data, and installation experiences from over 5,000 verified customers, I can tell you that finding the right dual flush toilet goes beyond just looking at GPF ratings.

The reality? Not all dual flush toilets are created equal. While manufacturers tout water savings of 20-60%, our testing found that actual performance varies dramatically. Some models clog frequently with their "eco" flush, forcing multiple flushes that eliminate any water savings. Others deliver powerful performance while using just 0.8 gallons - that's less water than most people use washing their hands.

We focused on toilets that balance three critical factors: genuine water efficiency (verified through EPA WaterSense certification), reliable flush performance (MAP scores of 800g or higher), and real-world usability. Each toilet in our lineup has been tested with standard waste loads, not just clear water, because that's what matters in your bathroom.

Complete Comparison Table - All 12 Dual Flush Toilets Tested

How to Choose the Best Dual Flush Toilet?

After installing and testing dozens of dual flush toilets in various homes, I've learned that the key to choosing the right model isn't just about water savings - it's about finding a toilet that performs reliably day after day. Let me walk you through what actually matters when making this investment.

First, understand what dual flush technology really means for your water bill. A standard toilet uses 1.6 gallons per flush (GPF), while dual flush models offer two options: a light flush (typically 0.8-1.1 GPF) for liquids and a full flush (1.28-1.6 GPF) for solids. Based on EPA data, the average person flushes five times daily - four liquid, one solid. With a quality dual flush toilet, that translates to about 3,000 gallons saved annually per person. For a family of four, we're talking 12,000 gallons and roughly $96 off your water bill each year.

The MAP (Maximum Performance) score tells you how much waste a toilet can clear in a single flush, measured in grams. Don't settle for anything under 800g - that's the minimum for reliable performance. Models scoring 1000g or higher, like several in our lineup, handle even challenging loads without multiple flushes. This matters because a toilet that requires double-flushing defeats the entire purpose of water conservation.

Installation complexity varies significantly between models. One-piece toilets look sleeker and clean easier, but they're heavier (often 100+ pounds) and trickier to maneuver into place. Two-piece models are easier to handle during installation but have more crevices where dirt accumulates. Side-access bolt holes, found on models like the Deer Valley units, make installation significantly easier, especially in tight spaces where your wrench barely fits.

Consider your bathroom's rough-in measurement before ordering. Most toilets require a 12-inch rough-in (distance from wall to center of drain), but older homes might have 10-inch or 14-inch configurations. The Fine Fixtures model in our lineup specifically addresses 10-inch rough-ins, perfect for those tricky bathroom renovations where standard toilets won't fit.

Height matters more than most people realize. Standard toilets sit 14-15 inches high, while comfort height (ADA compliant) models measure 17-19 inches. After testing both extensively, I recommend comfort height for anyone over 5'6" or anyone with knee or back issues. The extra two inches make a surprising difference in daily comfort, especially as we age. Several models in our test, including the HOROW units, offer true 17-inch ADA height.

Performance Analysis & Water Efficiency Technology

Let's talk about what's happening inside these toilets when you press that button. Modern dual flush systems use two distinct technologies: gravity-fed and pressure-assisted. Every model we tested uses gravity-fed systems, which are quieter and require less maintenance than pressure-assisted alternatives.

The secret to effective dual flush performance lies in the trapway design and bowl geometry. Fully glazed trapways, standard on quality models, create less friction for waste movement. The best performers, like the Swiss Madison with its tornado flush, use specialized water patterns that create a powerful vortex action. This swirling motion cleans the bowl more effectively than traditional straight-down flushing.

EPA WaterSense certification isn't just a fancy sticker - it guarantees the toilet uses 20% less water than the federal standard while maintaining performance. Every certified model undergoes rigorous testing, including 350g waste removal tests repeated multiple times. Most toilets in our lineup exceed these requirements significantly, with MAP scores reaching 1000g.

When evaluating real-world performance, we looked beyond manufacturer claims. Customer reviews revealed interesting patterns: toilets with MAP scores below 800g showed consistent complaints about multiple flushes needed. Those scoring 900g and above rarely had performance complaints. This 100g difference might seem minor, but it's the difference between confidence and frustration in daily use.

Cost Analysis & Long-Term ROI

Let me break down the real numbers behind dual flush toilet savings. Based on current water rates averaging $0.008 per gallon nationally, here's what you can expect:

A family of four using a standard 1.6 GPF toilet consumes about 11,680 gallons annually just from flushing. Switch to a dual flush model averaging 1.0 GPF, and that drops to 7,300 gallons - saving 4,380 gallons yearly. At average water rates, that's $35 in direct savings, but many utilities charge tiered rates where high usage costs more. In California, where upper-tier rates hit $0.015 per gallon, annual savings reach $65-80.

The real value emerges over time. These toilets typically last 15-20 years with proper maintenance. Over 15 years, water savings alone can reach $525-1,200 depending on your location. Factor in potential rebates (many utilities offer $50-150 for WaterSense toilets), and the math becomes even more compelling. Some municipalities even offer free installation for qualifying low-income households.

Maintenance costs stay surprisingly low with quality dual flush toilets. The main wear component, the flush valve seal, costs about $15-25 and needs replacement every 5-7 years. Compare that to older toilets that might need frequent flapper replacements, handle repairs, and fill valve adjustments. The fully skirted designs on models like the Deer Valley units also reduce cleaning time - no more scrubbing around those hard-to-reach bolt caps.

When planning your bathroom renovation, remember that a quality toilet becomes a centerpiece of your luxury bathroom ideas. The sleek, modern designs of today's dual flush toilets complement contemporary fixtures while delivering practical benefits that pay dividends for years.

Dual Flush Toilet Reviews - 2025 Models Tested

1. HOROW Compact One Piece T0338W - Best Overall Space Saver

EDITOR'S CHOICE
HOROW T0338W Compact One Piece Toilet with Comfort Chair...
Pros:
  • Space-saving compact design perfect for small bathrooms
  • Exceptional MAP 1000g flush performance
  • Industry-leading 0.8 GPF eco flush option
  • ADA compliant comfort height at 17.3 inches
  • Easy to clean one-piece seamless design
Cons:
  • Seat closes slowly (30+ seconds)
  • Flush buttons positioned awkwardly
  • Installation access holes could be larger
  • Some reports of occasional clogging
  • Water inlet adapter can confuse during setup
HOROW T0338W Compact One Piece Toilet with…
4.4

Dual Flush: 0.8/1.28 GPF ultra-efficient

MAP Score: 1000g maximum performance

Height: 17.3

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Key Specifications:

  • Rating: 4.4★ (1,015 reviews)
  • Price: $269.00
  • Dimensions: 26.6"D x 15"W x 26"H
  • Weight: 99.2 pounds
  • Best Seller Rank: Top rated in compact toilets
  • Amazon's Choice: Yes

The HOROW T0338W immediately impressed me with its ability to deliver full-size performance in a compact package. At just 26.6 inches deep, it fits comfortably in powder rooms where standard elongated toilets would feel cramped. Despite the smaller footprint, the elongated bowl provides comfortable seating that doesn't feel compromised.

What sets this model apart is its exceptional 0.8 GPF light flush - the most water-efficient option we tested. During our three-week testing period, it handled daily use without a single clog, even with the eco flush. The MAP 1000g score isn't just marketing; this toilet moves serious waste with authority. The fully glazed trapway and optimized bowl geometry create a powerful siphon that clears everything in one go.

The one-piece construction eliminates those nasty gaps where dust and grime accumulate around traditional two-piece toilets. The smooth sides and skirted trapway make weekly cleaning take half the time compared to my old standard toilet. The soft-close PP seat, while slow to close (users report 30+ seconds), prevents that middle-of-the-night slam we all hate.

What Customers Love:

  • Fits perfectly in small bathrooms without sacrificing comfort
  • Powerful flush despite ultra-low water usage
  • True ADA height makes sitting and standing easier

Common Concerns:

  • Flush button placement requires reaching behind you
  • Installation can be tricky in tight spaces

Bottom Line: If you need maximum performance in minimum space, the HOROW T0338W delivers. The combination of 0.8 GPF efficiency, MAP 1000g power, and compact design makes it ideal for small bathrooms, guest baths, or anyone serious about water conservation.

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2. Deer Valley DV-1F026 - Best Budget Skirted Design

BEST VALUE
Deer Valley One Piece Toilet, DV-1F026 Elongated Toilet with...
Pros:
  • Excellent value with frequent discounts
  • Easy-clean skirted design eliminates crevices
  • Side access holes simplify installation
  • Powerful dual flush system
  • Premium glazed surface resists stains
  • Lifetime after-sales service included
Cons:
  • Mixed reports on flush consistency
  • Durability concerns with seat hinges
  • Installation still challenging despite side access
  • Some users report drainage issues
  • Heavy weight requires two-person setup
Deer Valley One Piece Toilet, DV-1F026…
4.4

Dual Flush: 0.8/1.28 GPF water-efficient

Design: Fully skirted trapway

Height: Standard 16 7/8 inches

Certifications: CEC, CUPC, WaterSense

Installation: Side access holes

Warranty: 12-month plus lifetime support

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Key Specifications:

  • Rating: 4.4★ (831 reviews)
  • Price: $239.00 (was $279.00)
  • Dimensions: 28.15"D x 14.17"W x 26.97"H
  • Weight: 99 pounds
  • Material: Premium glazed ceramic
  • Shape: Oval elongated bowl

The Deer Valley DV-1F026 proves you don't need to spend $400+ for a quality skirted toilet. Currently priced at $239 (down from $279), it delivers features typically found in premium models. The fully skirted design isn't just about aesthetics - it eliminates those impossible-to-clean crevices around the base where dust bunnies multiply.

During installation, I immediately appreciated the side access holes. Instead of contorting my arm behind the toilet to reach mounting bolts, I could access everything from the sides. This seemingly small detail saved me 30 minutes of frustration. The toilet still weighs 99 pounds, so definitely get help moving it into position.

Dual flush toilet - Customer Photo 1
Customer submitted photo

The 0.8/1.28 GPF dual flush system performs admirably for the price point. While it doesn't quite match the raw power of higher-MAP-score models, it handles normal household use without issues. The premium glazed surface genuinely resists staining - after three months of use, the bowl still looks new with minimal cleaning effort.

Dual flush toilet - Customer Photo 2
Customer submitted photo

What Customers Love:

  • Modern appearance that looks more expensive than it is
  • Side access installation is a game-changer
  • Reliable flush performance for everyday use

Common Concerns:

  • Some units have inconsistent flush power
  • Seat hinges may loosen over time

Bottom Line: For budget-conscious buyers wanting modern aesthetics and decent performance, the Deer Valley DV-1F026 hits the sweet spot. It's not perfect, but at this price with these features, it's hard to beat.

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3. Swiss Madison St. Tropez SM-1T254 - Best Tornado Flush Technology

BEST TORNADO FLUSH
Swiss Madison SM-1T254 St. Tropez One Piece Toilet Dual...
Pros:
  • Unique tornado flush creates powerful vortex
  • Easy to clean skirted design
  • Quick-release seat for convenient maintenance
  • Comfort height reduces strain
  • Amazon Prime eligible with fast delivery
  • Multiple color options available
Cons:
  • Quality control issues with cracks reported
  • Installation difficulties in tight spaces
  • Some reports of frequent clogging
  • Seat and lid can feel flimsy
  • Mixed customer service experiences
  • Potential bidet compatibility issues
Swiss Madison SM-1T254 St. Tropez One Piece…
4.1

Flush Type: Dual Tornado 0.8/1.28 GPF

Bowl Height: 16 inch comfort height

Design: Skirted trapway

Quick-Release: Yes for easy cleaning

Material: High-quality ceramic

Prime Eligible: Yes with fast shipping

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Key Specifications:

  • Rating: 4.1★ (2,102 reviews)
  • Price: $263.00 (was $289.99)
  • Dimensions: 27"D x 15.12"W x 31.18"H
  • Weight: 26.6 pounds (shipping weight)
  • Flush Technology: Dual Tornado Vortex
  • Amazon Prime: Yes

The Swiss Madison St. Tropez stands out with its tornado flush technology - and I mean that literally. Press the flush button and water swirls around the bowl in a powerful vortex pattern, rather than simply falling straight down. This creates better bowl coverage and more effective waste removal with less water.

The quick-release seat deserves special mention. Press two buttons on the hinges, and the entire seat lifts off for deep cleaning. After dealing with traditional toilet seats where you're trying to clean around hinges with a toothbrush, this feature feels revolutionary. The seat reattaches just as easily - perfect for thorough weekly cleaning.

Dual flush toilet - Customer Photo 1
Customer submitted photo

With over 2,100 reviews, this model has proven itself in thousands of bathrooms. The comfort height design at 16 inches makes it accessible for most users, though not quite reaching full ADA compliance at 17 inches. The skirted trapway continues the modern aesthetic while eliminating cleaning headaches.

Dual flush toilet - Customer Photo 2
Customer submitted photo

However, quality control appears inconsistent. Several reviews mention receiving units with hairline cracks or developing them within months. Swiss Madison's customer service receives mixed reviews, with some customers struggling to get warranty support. At this price point, these issues are concerning.

What Customers Love:

  • Tornado flush provides excellent bowl cleaning
  • Quick-release seat is genuinely useful
  • Modern design enhances bathroom aesthetics

Common Concerns:

  • Quality control problems with some units
  • Clogging issues reported despite tornado flush
  • Customer service can be hit or miss

Bottom Line: The Swiss Madison St. Tropez offers innovative flush technology and convenient features, but quality control concerns prevent it from being our top pick. If you get a good unit, you'll love it. Consider purchasing from a retailer with easy returns.

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4. Fine Fixtures Round Toilet - Best for 10" Rough-In

BEST FOR SMALL SPACES
Fine Fixtures Modern One-Piece Toilet, High-Efficiency Dual...
Pros:
  • Perfect for 10-inch rough-in situations
  • Excellent budget option with deep discount
  • Overflow prevention like sinks have
  • Quick-release seat for easy cleaning
  • 5-year manufacturer warranty
  • Compact design ideal for tiny bathrooms
Cons:
  • Very small size described as kid-sized
  • Round bowl less comfortable than elongated
  • Limited compatibility with 10-inch rough-in
  • Reports of seat cracking over time
  • Lower height than standard toilets
  • Limited customer service responsiveness
Fine Fixtures Modern One-Piece Toilet,…
4.2

Rough-In: 10 inches (rare size)

Shape: Round space-saver bowl

Overflow Protection: Built-in feature

Quick-Release: Yes for cleaning

Warranty: 5 year manufacturer

Price: $202.26 (was $259.99)

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Key Specifications:

  • Rating: 4.2★ (256 reviews)
  • Price: $202.26 (was $259.99)
  • Dimensions: 25"D x 13.33"W x 28.25"H
  • Weight: 90 pounds
  • Rough-In: 10 inches (specialized)
  • Amazon Prime: Yes

If you're dealing with a 10-inch rough-in, your toilet options shrink dramatically. The Fine Fixtures model addresses this specific need while keeping the price reasonable. At $202, it's the most affordable option in our test, yet includes features like overflow prevention typically found in higher-end models.

Let's address the elephant in the room: this toilet is small. Really small. The round bowl and compact dimensions make it feel more like what you'd find in an RV than a residential bathroom. For petite users or children, this works fine. For larger adults, the round bowl can feel cramped during extended sessions.

Dual flush toilet - Customer Photo 1
Customer submitted photo

The overflow prevention feature caught my attention - it works like the overflow hole in your sink, preventing disasters if someone accidentally leaves it running. The quick-release seat, while basic in quality, does make cleaning easier. Just don't expect the robust feel of premium models.

Dual flush toilet - Customer Photo 2
Customer submitted photo

For apartments or older homes with 10-inch rough-ins, this toilet solves a real problem. The alternative often means expensive plumbing modifications costing $500-1000. Viewed in that context, the Fine Fixtures becomes an excellent value despite its limitations.

What Customers Love:

  • Solves the 10-inch rough-in problem affordably
  • Overflow prevention provides peace of mind
  • Great for powder rooms and small spaces

Common Concerns:

  • Size really is quite small for adults
  • Round bowl lacks comfort of elongated
  • Build quality reflects the budget price

Bottom Line: For 10-inch rough-in situations or extremely tight spaces, the Fine Fixtures toilet provides a functional solution at an unbeatable price. Just understand you're trading comfort and size for compatibility and affordability.

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5. HOROW HR-ST076WD - Best Modern Design

SLEEK DESIGN
HOROW HR-ST076WD Dual Flush Elongated Toilet with Soft Close...
Pros:
  • Modern sleek design easy to clean
  • Chair-height seating for comfort
  • Powerful siphon flush with 800g MAP
  • Quick-release seat for maintenance
  • Multiple water line compatibility
  • Lifetime after-sales service included
Cons:
  • Reports of frequent clogging with tissue
  • Heavy weight requiring professional install
  • Mixed flush power consistency
  • Complex installation with warranty requirements
  • Limited long-term durability data
HOROW HR-ST076WD Dual Flush Elongated…
4.4

Dual Flush: 1.1/1.6 GPF system

MAP Score: 800g performance

Height: Chair height comfort

Trapway: Fully skirted design

Certifications: cUPC, UPC, WaterSense, CEC

Service: Lifetime after-sales support

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Key Specifications:

  • Rating: 4.4★ (107 reviews)
  • Price: $244.00 (was $259.00)
  • Dimensions: 28.75"D x 14"W x 28"H
  • Weight: 101 pounds
  • MAP Score: 800g
  • Amazon Prime: Yes

The HOROW HR-ST076WD brings contemporary styling to the mid-price segment. The fully skirted trapway creates clean lines that complement modern bathroom designs, especially when paired with coastal bathroom design elements. At $244, it positions itself as a style-conscious choice without premium pricing.

The 800g MAP score meets the minimum we recommend for reliable performance. In practice, this means it handles standard loads well but might struggle with challenging situations. The 1.1/1.6 GPF flush rates are slightly higher than ultra-efficient models, but still deliver meaningful water savings compared to older toilets.

Dual flush toilet - Customer Photo 1
Customer submitted photo

Installation proved more complex than expected, partly due to the 101-pound weight and warranty requirements specifying professional installation. HOROW's lifetime after-sales service sounds impressive, but this model is relatively new, so long-term reliability remains unproven.

Dual flush toilet - Customer Photo 2
Customer submitted photo

What Customers Love:

  • Stunning modern appearance
  • Easy to keep clean with skirted design
  • Comfortable chair-height seating

Common Concerns:

  • Some users report clogging issues
  • Heavy weight complicates DIY installation

Bottom Line: Choose the HOROW HR-ST076WD when style matters as much as function. It delivers solid performance with exceptional aesthetics at a reasonable price.

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6. Deer Valley DV-1F52102 - Best Comfort Height Option

COMFORT HEIGHT
Deer Valley Elongated One Piece Toilet for Bathrooms,...
Pros:
  • Excellent 17-inch comfort height
  • Strong 900g MAP flush performance
  • Sleek one-piece easy cleaning
  • Compact size perfect for small bathrooms
  • Quiet flushing operation
  • Quality build with solid construction
Cons:
  • Seat width narrow for larger users
  • Installation requires two people
  • Non-standard seat bolt spacing
  • Replacement parts availability concerns
  • Mixed installation experiences reported
Deer Valley Elongated One Piece Toilet for…
4.3

Height: True 17 inch ADA compliant

Dual Flush: 1.1/1.6 GPF efficient

MAP Score: 900g strong performance

Bowl: Elongated comfort design

Technology: Siphonic flushing

Seat: Quick release mechanism

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Key Specifications:

  • Rating: 4.3★ (231 reviews)
  • Price: $269.00 (was $299.00)
  • Dimensions: 26.97"D x 15.35"W x 30.31"H
  • Weight: 97 pounds
  • Seat Height: 17 inches ADA
  • Amazon Prime: Yes

The Deer Valley DV-1F52102 delivers true ADA-compliant 17-inch height, making it our top pick for anyone prioritizing comfort and accessibility. This extra height makes a remarkable difference for seniors, tall individuals, or anyone with mobility concerns. Getting up from this toilet requires noticeably less effort than standard height models.

Performance impresses with a 900g MAP score - well above the minimum we recommend. The siphonic flushing technology creates strong suction that clears waste effectively while maintaining relatively quiet operation. During testing, it handled everything we threw at it without requiring double flushes.

Dual flush toilet - Customer Photo 1
Customer submitted photo

Despite compact exterior dimensions, the elongated bowl provides comfortable seating. This combination works perfectly in smaller bathrooms where every inch counts but comfort can't be compromised. The one-piece construction eliminates gaps where grime accumulates, making weekly cleaning significantly easier.

What Customers Love:

  • True 17-inch height improves daily comfort
  • Powerful flush rarely needs repeating
  • Fits well in compact bathrooms

Common Concerns:

  • Seat width may feel narrow to some
  • Installation complexity due to weight

Bottom Line: For anyone needing genuine comfort height with reliable performance, the Deer Valley DV-1F52102 excels. The combination of accessibility, power, and compact design justifies the moderate price premium.

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7. Casta Diva Elongated - Best New Arrival

NEW ARRIVAL
Casta Diva Elongated One Piece Toilet with 17" ADA Comfort...
Pros:
  • 17-inch ADA height for easy sitting and standing
  • Compact design saves space while staying sturdy
  • Straightforward installation with 12-inch rough-in
  • Efficient dual flush saves water effectively
  • Powerful flush clears bowl reliably
  • Sleek one-piece design simplifies cleaning
  • Soft closing seat prevents slamming
Cons:
  • Some units may have water leaking issues
  • Higher price compared to basic models
Casta Diva Elongated One Piece Toilet with…
4.5

Height: 17 inch ADA compliant

Dual Flush: 1.1/1.6 GPF efficient

MAP Score: 1000g maximum power

Bowl: Elongated comfort

Certifications: WaterSense approved

Popularity: 200+ bought last month

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Key Specifications:

  • Rating: 4.5★ (31 reviews)
  • Price: $289.99
  • Dimensions: 27.17"D x 14.37"W x 25.39"H
  • Weight: 125 pounds
  • MAP Score: 1000g
  • Bought Past Month: 200+

The Casta Diva represents a newer entrant that's quickly gaining traction - over 200 units sold last month alone. With a 4.5-star rating and 1000g MAP score, it's proving itself despite limited long-term data. The combination of true 17-inch ADA height and maximum flush performance targets users who won't compromise on either comfort or power.

At 125 pounds, this is one of the heavier toilets we tested, suggesting robust construction. The one-piece design looks premium and modern, fitting well in updated bathrooms. The soft-close seat mechanism works smoothly, preventing those jarring slams that wake the household.

Dual flush toilet - Customer Photo 1
Customer submitted photo

Early adopters report excellent flush performance - the 1000g MAP score translates to real-world reliability. The 1.1/1.6 GPF dual flush strikes a good balance between water conservation and clearing power. Installation feedback remains positive, with most DIYers completing setup in under two hours.

Dual flush toilet - Customer Photo 2
Customer submitted photo

What Customers Love:

  • Powerful flush performance with 1000g MAP
  • True ADA height improves accessibility
  • Solid construction feels premium

Common Concerns:

  • Limited long-term reliability data
  • Some reports of minor leaking issues

Bottom Line: The Casta Diva offers compelling specs at a competitive price. While long-term reliability remains unproven, early results look promising for those willing to try a newer brand.

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8. HOROW Two-Piece 17" - Best Value ADA Height

BEST VALUE
HOROW 17 Inch Tall Toilet, Two-Piece Elongated Toilet with...
Pros:
  • Exceptional 4.8-star rating with consistent praise
  • 17-inch ADA height perfect for seniors
  • Amazon's Choice indicates strong performance
  • Unbeatable value at $209.88
  • Easy installation with all hardware
  • Powerful dual flush uses 75% less water
  • Solid sturdy construction exceeds expectations
  • Quiet operation with soft-close seat
  • High-end appearance with smooth finish
Cons:
  • Two-piece design requires more cleaning
  • Higher profile may not fit all spaces
HOROW 17 Inch Tall Toilet, Two-Piece…
4.8

Height: 17 inch ADA compliant

Type: Two-piece design

Dual Flush: 1.1/1.6 GPF

MAP Score: 1000g performance

Rating: 4.8 stars highest rated

Price: $209.88 lowest price

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Key Specifications:

  • Rating: 4.8★ (47 reviews) - Highest Rated
  • Price: $209.88 - Lowest Price
  • Dimensions: 28.8"D x 14.2"W x 33"H
  • Weight: 95 pounds
  • MAP Score: 1000g
  • Amazon's Choice: Yes

Here's something remarkable: the HOROW Two-Piece combines the highest rating (4.8 stars) with the lowest price ($209.88) in our test. This isn't a fluke - customers consistently praise its performance, build quality, and value. The two-piece design allows for easier transport and installation compared to heavier one-piece models.

The 17-inch ADA height and 1000g MAP score match specifications of toilets costing twice as much. During testing, the flush performance impressed us - powerful, consistent, and surprisingly quiet. The elongated bowl provides comfortable seating without extending too far into bathroom space.

Yes, two-piece toilets require more cleaning around the tank-to-bowl connection, but at this price with these features, it's a worthwhile trade-off. The included soft-close seat feels substantial, not flimsy like some budget options. Installation proved straightforward with clear instructions and quality hardware.

What Customers Love:

  • Unbeatable combination of quality and price
  • True 17-inch height helps seniors
  • Powerful flush with minimal water use

Common Concerns:

  • Two-piece design less sleek than one-piece
  • Taller profile than some models

Bottom Line: At $209.88 with a 4.8-star rating, the HOROW Two-Piece delivers exceptional value. If you can live with two-piece styling, this offers premium features at a budget price.

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9. Swiss Madison with Black Hardware - Best Unique Style

UNIQUE STYLE
Swiss Madison St. Tropez SM-1T254HB One-Piece Elongated...
Pros:
  • Unique black hardware provides distinctive styling
  • 33% discount makes it excellent value
  • Vortex flush technology for superior cleaning
  • Amazon's Choice and Prime eligible
  • Soft-close seat with quick-release feature
  • One-piece design for easy cleaning
  • Good flushing power and modern appearance
Cons:
  • Installation challenging for larger hands
  • Chrome flush button may corrode over time
  • Seat may feel less secure side to side
  • Flush requires longer button hold than expected
Swiss Madison St. Tropez SM-1T254HB…
4.5

Special: Black hardware accents

Flush: Vortex dual 1.1/1.6 GPF

Height: Comfort chair ADA

Discount: 33% off at $254.99

Technology: Vortex flush system

Prime: Yes with fast shipping

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Key Specifications:

  • Rating: 4.5★ (49 reviews)
  • Price: $254.99 (was $379.43 - 33% off)
  • Dimensions: 27"D x 15.15"W x 31.5"H
  • Weight: 31.2 pounds (shipping)
  • Special Feature: Black hardware
  • Amazon Prime: Yes

The Swiss Madison with black hardware makes a bold design statement. In a sea of white toilets with chrome fixtures, the contrasting black hardware creates a modern, upscale look that complements contemporary bathroom designs. Currently 33% off at $254.99, it's an affordable way to add designer touches.

The vortex flush technology, similar to the tornado flush in other Swiss Madison models, creates a swirling water pattern for effective bowl cleaning. The combination of 1.1/1.6 GPF options provides flexibility while maintaining WaterSense compliance. Performance matches the standard St. Tropez model we tested earlier.

Dual flush toilet - Customer Photo 1
Customer submitted photo

Installation can be tricky, particularly for those with larger hands trying to access the mounting bolts. Some users report the chrome flush button showing corrosion over time - ironic given the black hardware elsewhere. The quick-release seat mechanism works well for cleaning, though some find the seat feels less stable than fixed designs.

Dual flush toilet - Customer Photo 2
Customer submitted photo

What Customers Love:

  • Distinctive black hardware styling
  • Significant discount from list price
  • Effective vortex flush technology

Common Concerns:

  • Button corrosion issues reported
  • Installation access challenging

Bottom Line: Choose this Swiss Madison for its unique aesthetics and current discount. The black hardware adds designer appeal while the vortex flush delivers solid performance.

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10. Deer Valley Premium F52636-01 - Best Premium Build

PREMIUM QUALITY
Deer Valley Elongated One Piece Toilet with Soft Close Seat,...
Pros:
  • Premium build with high-fired ceramic glaze
  • 17-inch ADA height ideal for accessibility
  • Powerful dual flush with water efficiency
  • Soft-close seat with rust-proof hinges
  • Sleek modern design upgrades bathroom
  • Easy to clean fully skirted design
  • Quick-release seat for thorough cleaning
  • Pre-attached installation hardware included
Cons:
  • Higher price point at $385.38
  • Heavy weight requires two-person install
  • Installation challenging with large hands
  • Flush buttons require longer hold time
  • Mixed reviews on flush strength expectations
Deer Valley Elongated One Piece Toilet with…
4.5

Build: High-fired ceramic glaze

Height: 17 inch ADA compliant

Dual Flush: 1.1/1.6 GPF efficient

Design: Fully skirted modern

Hinges: Rust-proof stainless steel

Price: Premium at $385.38

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Key Specifications:

  • Rating: 4.5★ (61 reviews)
  • Price: $385.38
  • Dimensions: 28.62"D x 26.46"W x 15.47"H
  • Weight: 111 pounds
  • Material: Premium high-fired ceramic
  • Bought Past Month: 200+

The Deer Valley Premium justifies its $385 price with superior materials and construction. The high-fired ceramic glaze creates an exceptionally smooth, stain-resistant surface that stays cleaner longer. After extended testing, this toilet still looks showroom-new with minimal maintenance.

At 111 pounds, this is serious porcelain. The weight indicates thick walls and robust construction that should last decades. The 17-inch ADA height combines with the elongated bowl for maximum comfort. The fully skirted design eliminates every crevice where dirt typically hides, making this perfect for small luxury bathroom ideas where every detail matters.

Dual flush toilet - Customer Photo 1
Customer submitted photo

The rust-proof stainless steel hinges represent the attention to detail throughout. While plastic hinges eventually crack or corrode, these should outlast the toilet itself. The quick-release mechanism allows complete seat removal for deep cleaning - particularly useful with the skirted design.

Dual flush toilet - Customer Photo 2
Customer submitted photo

What Customers Love:

  • Premium materials feel luxurious
  • Exceptional build quality throughout
  • Easy maintenance with skirted design

Common Concerns:

  • Premium price may exceed budgets
  • Very heavy for DIY installation

Bottom Line: For those prioritizing quality over price, the Deer Valley Premium delivers. The superior materials and construction justify the investment for a long-term bathroom upgrade.

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11. WOODBRIDGE B0940-F-C - Most Reviewed Choice

MOST REVIEWED
WOODBRIDGEE One Piece Toilet with Soft Closing Seat, Chair...
Pros:
  • Extensive 1325+ review base provides confidence
  • Amazon's Choice with Prime shipping
  • Powerful 1000 gram MaP flush score
  • Fully skirted design stays very clean
  • Chair height meets ADA standards
  • Complete package includes all hardware
  • WaterSense certified for efficiency
  • Modern sleek appearance
Cons:
  • Installation reported as very challenging
  • Toilet seat bolts loosen and hard to access
  • Some reports of bowl staining issues
  • Flush button positioning awkward
  • Mixed reviews on bowl coverage
  • Can be prone to clogging per some users
WOODBRIDGEE One Piece Toilet with Soft…
4.3

Reviews: 1,325 customer reviews

MAP Score: 1000g maximum

Dual Flush: 1.28 GPF efficient

Height: Chair height ADA

Design: Fully skirted clean

Prime: Yes with fast delivery

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Key Specifications:

  • Rating: 4.3★ (1,325 reviews)
  • Price: $333.61
  • Dimensions: 28.5"D x 14.5"W x 27.5"H
  • Weight: 119 pounds
  • MAP Score: 1000g
  • Amazon's Choice: Yes

With over 1,325 reviews, the WOODBRIDGE B0940-F-C has more real-world testing than any toilet in our lineup. This extensive feedback provides valuable insights - both positive and negative. The 4.3-star average across this many reviews suggests consistent, if not perfect, performance.

The 1000g MAP score and WaterSense certification deliver on the technical promises. The fully skirted design looks modern and genuinely simplifies cleaning - no more scrubbing around bolt caps or trapway curves. The chrome flush button adds a premium touch, though its top-mount position can be awkward when the lid is up.

Dual flush toilet - Customer Photo 1
Customer submitted photo

Installation challenges appear frequently in reviews. The combination of 119-pound weight and tight access for mounting bolts frustrates many DIYers. Several reviews mention seat bolts loosening over time, requiring periodic tightening - annoying given the difficult access. Some users report the flush doesn't adequately clean the entire bowl surface.

Dual flush toilet - Customer Photo 2
Customer submitted photo

What Customers Love:

  • Proven performance with extensive reviews
  • Sleek design enhances bathroom appearance
  • Powerful flush when working properly

Common Concerns:

  • Installation difficulty widely reported
  • Seat bolt maintenance issues
  • Inconsistent bowl cleaning coverage

Bottom Line: The WOODBRIDGE offers proven performance backed by extensive customer feedback. While not perfect, its track record provides confidence for buyers who value real-world validation over specs alone.

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12. American Standard H2Option - Best Brand Heritage

TRUSTED BRAND
American Standard 606AA002.020 H2Option Two-Piece Toilet...
Pros:
  • Trusted American Standard brand reputation
  • Excellent water efficiency at 0.92-1.28 GPF
  • WaterSense certified for compliance
  • PowerWash rim technology cleans effectively
  • Complete kit includes seat and wax ring
  • Amazon's Choice product recognition
  • Dual flush provides usage flexibility
  • Chair height design for accessibility
Cons:
  • Some units arrive with defective components
  • Installation instructions could be clearer
  • Two-piece design requires more maintenance
  • Push button difficult for arthritis sufferers
  • Limited stock availability
  • Mixed reviews on overall durability
American Standard 606AA002.020 H2Option…
4.2

Brand: American Standard legacy

Dual Flush: 0.92/1.28 GPF ultra-efficient

Type: Two-piece traditional

Technology: PowerWash rim

Complete Kit: Includes seat and wax ring

Certifications: WaterSense approved

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Key Specifications:

  • Rating: 4.2★ (500 reviews)
  • Price: $365.43
  • Dimensions: 29.75"D x 15"W x 31.5"H
  • Weight: 51.4 pounds
  • Dual Flush: 0.92/1.28 GPF
  • Stock: Only 14 left

American Standard brings over 140 years of plumbing expertise to the H2Option. The brand recognition matters - finding replacement parts in 10 years will be easier than with newer brands. The 0.92 GPF light flush represents the most water-efficient option we tested, using less than a gallon for liquid waste.

The PowerWash rim technology creates a powerful swirl that cleans the bowl effectively despite using minimal water. The complete kit including seat and wax ring simplifies purchasing - no last-minute hardware store runs. The two-piece design, while less modern-looking, makes transport and installation more manageable at just 51.4 pounds per section.

Quality control appears inconsistent based on reviews. Some customers receive perfect units, while others report defective flush mechanisms or cracked components. The push-button flush, while water-efficient, can be difficult for users with arthritis or limited hand strength. Limited stock availability might indicate this model is being phased out.

For those preferring established brands over newer companies, American Standard provides peace of mind. The combination of brand heritage, ultra-efficiency, and moderate pricing appeals to traditional buyers. Just inspect carefully upon delivery and keep your receipt handy.

What Customers Love:

  • American Standard reliability and reputation
  • Ultra-efficient 0.92 GPF option
  • Complete kit simplifies installation

Common Concerns:

  • Quality control inconsistencies
  • Push button can be difficult to operate
  • Limited availability concerns

Bottom Line: The American Standard H2Option suits brand-loyal buyers wanting proven reliability with excellent water efficiency. Despite some QC concerns, the brand's reputation and support network provide value.

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Frequently Asked Questions

How much water does a dual flush toilet really save?

Based on EPA data and our calculations, a quality dual flush toilet saves 3,000-4,000 gallons per person annually compared to standard 1.6 GPF models. For a family of four, that's 12,000-16,000 gallons yearly. With the average flush pattern (80% liquid, 20% solid), you'll use about 1.0 GPF average versus 1.6 GPF, resulting in 35-40% water reduction.

Are dual flush toilets more prone to clogging?

Not if you choose models with adequate MAP scores. Toilets scoring 800g or higher rarely clog with normal use. Problems typically occur with models under 600g MAP or when users consistently choose the light flush for solid waste. Our testing shows models with 900g+ MAP scores perform as reliably as traditional toilets.

What's the difference between 10-inch and 12-inch rough-in?

The rough-in measures from your wall to the center of the floor drain. Standard modern construction uses 12-inch rough-ins, while older homes (pre-1960s) often have 10-inch or 14-inch configurations. Measure before ordering - using the wrong rough-in means the toilet won't fit properly. The Fine Fixtures model specifically addresses 10-inch needs.

Do dual flush toilets require special maintenance?

Dual flush toilets require similar maintenance to standard models. The main difference is the flush valve seal, which typically needs replacement every 5-7 years ($15-25 part). Some models with complex mechanisms may need occasional adjustment. Fully skirted designs actually reduce cleaning time by eliminating crevices where dirt accumulates.

Is comfort height the same as ADA height?

True ADA compliance requires 17-19 inches from floor to seat top. Many manufacturers use "comfort height" loosely for anything over 16 inches. We specifically note which models meet genuine 17-inch ADA standards - important for seniors, tall individuals, or those with mobility concerns. The 2-inch difference significantly impacts daily comfort.

Why do some dual flush toilets have different GPF ratings?

Manufacturers balance water efficiency with performance differently. Ultra-efficient models (0.8/1.28 GPF) maximize water savings but may require premium engineering for reliable flushing. Standard dual flush (1.1/1.6 GPF) provides more clearing power with slightly higher water use. Choose based on your priorities - maximum savings or guaranteed performance.

Can I install a dual flush toilet myself?

Most handy homeowners can install a dual flush toilet in 2-3 hours. One-piece models are heavier (90-120 pounds) and harder to maneuver alone. Two-piece designs are easier to handle but require additional assembly. Key challenges include tight mounting bolt access and proper wax ring sealing. Consider professional installation for one-piece models over 100 pounds.

What causes dual flush buttons to stick or fail?

Button mechanisms can fail from mineral buildup, especially in hard water areas. Regular cleaning with vinegar prevents most issues. Some models have better button designs than others - cable-actuated systems tend to be more reliable than direct-push mechanisms. If buttons stick, check for calcium deposits or misalignment before assuming component failure.

Are dual flush toilets worth the investment?

For most households, yes. Average payback period is 3-5 years through water savings alone. Factor in potential utility rebates ($50-150), reduced environmental impact, and modern aesthetics, and the value becomes clear. Even our budget pick at $202 will save enough water to pay for itself while providing daily use for 15-20 years.

Which brands offer the best warranty coverage?

HOROW and Deer Valley offer lifetime after-sales service on several models. American Standard provides extensive parts availability through their dealer network. Swiss Madison warranties vary by model. Always register your toilet immediately after purchase and keep documentation. Most cover ceramic parts for 10+ years but limit mechanical components to 1-2 years.

Final Thoughts

After three months of testing and analyzing over 5,000 customer experiences, I can confidently recommend any toilet scoring 800g+ MAP with proper dual flush ratios. The HOROW Compact (B09WYQCPMP) earns our Editor's Choice for combining exceptional efficiency (0.8/1.28 GPF), powerful performance (1000g MAP), and space-saving design. At $269, it delivers premium features without premium pricing.

For budget buyers, the HOROW Two-Piece at $209.88 offers unbeatable value with its 4.8-star rating and full feature set. Those prioritizing style should consider the Swiss Madison with black hardware ($254.99) or the sleek Deer Valley models. Premium buyers will appreciate the Deer Valley F52636-01's superior materials and construction at $385.

Remember that toilet selection impacts your bathroom experience for the next 15-20 years. Consider your specific needs: bathroom size, user height, water costs, and aesthetic preferences. Every model we tested saves significant water compared to older toilets - even our least efficient option reduces water use by 20%.

Installation represents the biggest challenge for most buyers. Don't hesitate to hire a plumber if you're uncomfortable with the weight or complexity. Professional installation typically costs $150-250 but ensures proper sealing and alignment. When updating your bathroom, consider how your new dual flush toilet fits with your overall design vision, including granite bathroom countertops and other fixtures.

The dual flush revolution isn't just about saving water - it's about getting better performance while being environmentally responsible. Modern engineering delivers powerful flushing with minimal water use. Choose based on your specific needs, and you'll enjoy reliable performance while reducing your environmental footprint for years to come.

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