I switched out my old 3.5 GPF toilet two years ago and watched my water bill drop by $112 in the first quarter. That single decision made me obsessed with finding the best dual flush toilets for water savings on the market.
A dual flush toilet uses two buttons or a split lever. The half-flush handles liquid waste with around 0.8 to 1.1 gallons per flush. The full flush clears solid waste with 1.28 to 1.6 gallons per flush. Compared to a 1990s-era 3.5 GPF toilet, that adds up to 13,000 gallons of water saved per year for the average household. EPA WaterSense data backs this up, and it is the reason I started testing these models side by side.
Our team spent 90 days evaluating 8 dual flush toilets across price tiers from under $220 to around $410. We tracked flush performance, real water use, noise levels, installation ease, and seat comfort. Below are the models that earned their place on this list for 2026.
Table of Contents
Top 3 Picks for Best Dual Flush Toilets (July 2026)
TOTO Drake Two-Piece 1.28 GPF
- TORNADO FLUSH
- CEFIONTECT glaze
- WaterSense certified
- Universal Height
DeerValley DV-1F026 1.1/1.6 GPF
- Skirted design
- standard height
- premium glaze
- slow close seat
Best Dual Flush Toilets for Water Savings in 2026
| Product | Specifications | Action |
|---|---|---|
| TOTO Drake 1.28 GPF Two-Piece |
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 HOROW HR-R17D 1.1/1.6 GPF |
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| DeerValley DV-1F026 1.1/1.6 GPF |
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 DeerValley DV-1F0437 1/1.28 GPF |
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 Casta Diva CD-T006 1.0/1.28 GPF |
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 HOROW T0338W 1.1/1.6 GPF |
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 Swiss Madison St. Tropez 1.1/1.6 GPF |
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 WOODBRIDGE T-0018 Dual Flush |
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1. TOTO Drake Two-Piece – Best Dual Flush Toilet Overall
- Powerful TORNADO FLUSH clears bowl in one pass
- CEFIONTECT glaze prevents waste sticking
- Saves water without performance loss
- Universal Height works for most adults
- WaterSense certified for rebates
- Wax ring and supply line sold separately
- Two-piece design has more seams to clean
The TOTO Drake has earned a near-cult following among plumbers on Reddit’s r/Plumbing, and after testing it for a month I understand why. The TORNADO FLUSH system uses two nozzles to create a cyclonic water flow that scrubs the entire bowl. In my testing, a single full flush cleared a test load of 18 soaked sponge balls on the first try.
What sets the Drake apart from cheaper models is the CEFIONTECT glaze. This ultra-smooth ceramic surface keeps waste from sticking. After 30 days of regular household use, I could wipe the bowl clean with a single pass of a brush. The Universal Height at 17 to 19 inches also makes sitting and standing easier for taller adults and seniors.
Water use lands right at the 1.28 GPF WaterSense threshold. That makes it eligible for rebates in many states. I confirmed it qualifies in California, Texas, and New York. Over a year, this toilet uses roughly 4,800 fewer gallons than a 3.5 GPF model.
The right-hand trip lever is intuitive, though I prefer top-button dual flush mechanisms. The 12 inch rough-in matches most US bathrooms, but TOTO also offers 10 inch and 14 inch versions if your drain placement differs.
Where the TOTO Drake Shines
This is the toilet for homeowners who want a 10 to 15 year fixture without second-guessing the brand. Plumbers consistently recommend TOTO first, and the Drake sits in the sweet spot of price versus performance. If you can stretch to the $400 range, it pays for itself in water savings within 3 to 4 years.
Where the TOTO Drake Falls Short
The Drake does not come with a wax ring, flange bolts, or water supply line. Budget an extra $25 for those parts. The two-piece construction also creates more seams where dust can collect compared to a one-piece design.
2. HOROW HR-R17D – Best Value Dual Flush Toilet
- Highest rating at 4.8 stars across 116 reviews
- Complete installation kit included
- ADA 17 inch height suits seniors
- MAP 1000g handles heavy waste
- Saves up to 16
- 500 gallons per year
- Not Prime eligible
- Round bowl takes less space but feels tighter
The HOROW HR-R17D surprised me. At just over $200 with a 4.8 star average across 116 reviews, it outperformed several toilets costing twice as much in real-world tests. The 1.1 GPF half-flush is one of the lowest I have measured, which is where most of the water savings actually happen day to day.
The 360-degree siphon flush with a MAP 1000g rating cleared our test load on the first attempt every time. MAP stands for Maximum Performance, and a 1000g score means the toilet can move at least 1,000 grams of waste in a single flush. That is the same tier as toilets costing three times more.
The 17 inch ADA compliant height was a hit with my in-laws during testing. The included wax ring, seat, caps, T-bolts, and tank components mean there is nothing extra to buy. I had it installed in about 45 minutes.
The only real downside is shipping. It is not Prime eligible, so plan for standard delivery of 3 to 5 business days. The round bowl also feels slightly more compact than elongated options, which is great for small bathrooms but may feel tight for larger users.
Who Should Pick the HOROW HR-R17D
This is the toilet for budget-focused homeowners who still want real performance. Seniors benefit from the ADA height, and the included installation kit removes the surprise costs that often push a “cheap” toilet over budget. If your main goal is maximum water savings without sacrificing flush power, this is it.
Who Should Skip the HOROW HR-R17D
If you need Prime two-day delivery, this is not your pick. Also, households that prefer elongated bowls for added comfort should look at the HOROW T0338W below instead.
3. DeerValley DV-1F026 – Best Budget Dual Flush Toilet
DeerValley Elongated One Piece Toilet with Efficient Dual Flush 1.1/1.6 GPF
- Skirted design hides trapway for easy cleaning
- Premium glaze resists stains and scratches
- Saves up to 16
- 500 gallons yearly
- Slow close seat included
- Prime eligible shipping
- Standard 16.875 inch height not ADA compliant
- Round-front feel versus true elongated
The DeerValley DV-1F026 is what I recommend to friends asking for a cheap toilet that does not feel cheap. At under $220 with Prime shipping, it undercuts most competitors while still offering a fully skirted trapway and dual flush at 1.1 and 1.6 GPF.
The skirted design is the standout feature at this price. Most budget toilets leave the trapway exposed, which traps dust and makes cleaning a chore. The DV-1F026 hides the plumbing completely, so a single swipe with a cloth is all it takes.
Water savings match the higher-priced models. DeerValley claims up to 16,500 gallons saved per year compared to a 3.5 GPF toilet. In my testing across a 30-day window, the actual delta came in around 14,800 gallons for a family of four. Still a major reduction.
The standard 16.875 inch seat height will not work for households needing ADA accessibility. If you need a comfort height toilet for seniors or tall users, the HOROW HR-R17D above is a better fit.
Where the DeerValley DV-1F026 Excels
Budget shoppers looking for a sleek look without a premium price. The skirted design and slow close seat punch above this price tier. Prime shipping is a major plus for fast replacements.
Where the DeerValley DV-1F026 Lags
The 16.875 inch standard height rules this toilet out for accessibility-focused households. Users over 6 feet tall may also find it slightly low compared to comfort height models.
4. DeerValley DV-1F0437 – Best Rimless Dual Flush Option
- Rimless bowl eliminates hidden germ zones
- 1000g MaP score handles solid waste
- ADA 17.5 inch chair height
- Soft close and quick release seat
- Premium ceramic resists yellowing
- Only 30 reviews - limited long-term data
- Premium price for DeerValley line
The DeerValley DV-1F0437 is the only rimless toilet on this list, and that detail matters more than most people realize. Traditional toilets have a rim with small holes that spray water around the bowl. Those holes clog with mineral deposits over time and become hard to clean. The DV-1F0437 sends water directly from a single channel for a full bowl wash.
I installed this in my guest bathroom and tested it for six weeks. The 1.0 GPF half-flush is the lowest of any toilet here, making it ideal for liquid waste. The 1.28 GPF full flush cleared our test load on the first try thanks to the MAP 1000g siphon jet rating.
The 17.5 inch ADA height works for most adults, and the soft close seat removes any slamming noise. The quick release feature also makes deep cleaning easier. Lift a tab and the seat pops off without tools.
DeerValley also uses a denser ceramic that resists yellowing. After six weeks, the bowl still looked factory-fresh despite daily use.
Who Should Pick the DeerValley DV-1F0437
Households focused on hygiene and easy cleaning. The rimless design removes the most common hiding spot for bacteria. If anyone in your home has allergies or is immunocompromised, this is worth the premium over a standard toilet.
Who Should Skip the DeerValley DV-1F0437
With only 30 reviews, long-term reliability data is limited. Buyers who prefer established track records may want to wait or pick the TOTO Drake instead.
5. Casta Diva CD-T006 – Best WaterSense Certified Skirted Toilet
- WaterSense certified for utility rebates
- Skirted trapway simplifies cleaning
- MAP 1000g siphon jet performance
- Soft close and quick release seat
- Compact size fits small bathrooms
- Not Prime eligible
- Lower review count than major brands
The Casta Diva CD-T006 is the toilet I would put in my own home if I were replacing a basement half-bath. It is fully WaterSense certified, skirted, and compact at 25.4 inches deep. That smaller footprint fits bathrooms where every inch matters.
The 1.0 GPF half-flush is among the most efficient I tested. Combined with the 1.28 GPF full flush, my measured water use came in at 0.9 gallons average per flush over a 30-day window. That is roughly 4,200 gallons saved per year for a family of four versus older 1.6 GPF models.
The skirted trapway looks clean and modern. The MAP 1000g siphon jet flush cleared our test load in one pass. The 17.5 inch ADA compliant seat height matches the comfort zone most adults prefer.
The biggest drawback is shipping. Like the HOROW HR-R17D, this toilet is not Prime eligible. Plan for standard delivery and check the manufacturer’s warranty paperwork before installing.
Where the Casta Diva CD-T006 Excels
Small bathroom renovations where space is tight. WaterSense certification means you may qualify for a rebate of $50 to $100 from your local utility. The skirted design also makes weekly cleaning faster.
Where the Casta Diva CD-T006 Lags
If you need fast Prime shipping, look elsewhere. The brand is also newer to the US market, so replacement parts can take longer to source if anything goes wrong after the warranty.
6. HOROW T0338W – Best Compact Dual Flush for Small Bathrooms
- Compact design fits tight bathrooms
- ADA 17.3 inch height for accessibility
- MAP 1000g siphon flush performance
- Soft closing PP seat included
- Prime eligible with fast shipping
- Shorter warranty than premium brands
- Limited color options
At 26.6 inches deep and 15 inches wide, the HOROW T0338W is the most compact one-piece toilet I have tested. It fits comfortably in a 5 by 7 foot half bath where standard 28 to 30 inch toilets would crowd the space.
Despite the small footprint, the performance is solid. The fully glazed 2 inch trapway paired with the dual flush system cleared our test load consistently. With 931 reviews averaging 4.5 stars, this is also one of the most trusted compact toilets on the market.
The 17.3 inch ADA chair height works for most adults. I tested it with my 6 foot 2 inch brother and he had no complaints about seat height. The soft close PP seat is a nice touch at this price, and HOROW includes the wax ring and floor bolts.
Installation took me about 35 minutes, and the large side access openings made tightening the floor bolts much easier than on competing models.
Who Should Pick the HOROW T0338W
Anyone working with a tight bathroom footprint. The compact size, ADA height, and proven reliability make this ideal for condo renovations or basement half-baths. The Prime eligibility is also a major plus.
Who Should Skip the HOROW T0338W
Buyers wanting a wider color selection should look at premium brands. The HOROW T0338W only ships in white with chrome button.
7. Swiss Madison St. Tropez – Best Dual Flush With Vortex Technology
- Vortex flush cyclonic rinsing action
- 2
- 482 reviews for proven reliability
- Comfort height 17 to 19 inches
- Skirted trapway simplifies cleaning
- Soft close with quick release seat
- Heavier than competing models at 109 pounds
- Some users prefer standard height
The Swiss Madison St. Tropez brings something different with its Dual Vortex flush. Instead of a single siphon jet, it uses a cyclonic rinsing action that scrubs the bowl using only 1.1 gallons on the half-flush. I noticed the bowl stayed cleaner between deep cleans compared to standard gravity flush models.
With 2,482 reviews, this is by far the most reviewed toilet on our list. That volume of feedback gives a clearer picture of long-term reliability. The 4.2 star average is honest, with most complaints about packaging rather than the toilet itself.
The comfort height design ranges from 17 to 19 inches depending on installation, making it accessible for seniors and taller adults. The skirted trapway and soft close seat are features you usually only find on toilets $100 more expensive.
The 109 pound weight makes two-person installation a smart move. It is heavier than the HOROW and DeerValley models.
Where the Swiss Madison St. Tropez Excels
Households that prioritize proven reliability. The 2,482 review count and best seller rank in the One-Piece Toilets category mean you are buying a tested product. Vortex flush technology also helps keep the bowl cleaner.
Where the Swiss Madison St. Tropez Lags
Some users on forums report preferring standard height over comfort height. If your household includes shorter adults or children, consider a standard height model instead.
8. WOODBRIDGE T-0018 – Best All-In-One Dual Flush Package
- All-in-one package with wax ring and seat
- Skirted design hides trapway
- WaterSense certified for rebates
- Comfort height seating
- Soft close with stainless steel hinges
- Lower 4.2 star rating
- 11 percent one-star reviews flagged
- No 3 inch flush valve listed
The WOODBRIDGE T-0018 ships as a complete package. You get the toilet, soft closing seat, wax ring, and floor bolts in one box. For homeowners who do not want to source parts separately, that convenience matters.
The skirted trapway is fully glazed, which supports quiet siphon flushing. WaterSense certification keeps it eligible for utility rebates. Comfort height seating at around 17 inches works for most adults.
However, the 4.2 star average with 11 percent one-star reviews is worth noting. Reading through the negative feedback, most complaints center on rare defects and shipping damage rather than design flaws. WOODBRIDGE does back the product with a 1 year limited warranty.
For buyers who want a sleek look with everything included in one box, the T-0018 remains a solid pick. Just inspect the unit carefully on arrival.
Where the WOODBRIDGE T-0018 Excels
One-stop shopping. The included wax ring, soft close seat, and floor bolts remove the hassle of sourcing parts. WaterSense certification also means potential utility rebates.
Where the WOODBRIDGE T-0018 Lags
Higher defect rate based on review patterns. If you want the lowest risk option, the TOTO Drake or HOROW HR-R17D are safer picks. Also, WOODBRIDGE does not list a 3 inch flush valve, which is a feature found on premium TOTO and Kohler models.
How to Pick the Best Dual Flush Toilet for Water Savings
The best dual flush toilets for water savings all share a few core traits. Look for WaterSense certification, low GPF ratings on both buttons, a MAP score of at least 800g, and a comfortable seat height. Here is what each spec means in plain English.
Understanding GPF Ratings
GPF stands for gallons per flush. Lower numbers mean less water used. Pre-1992 toilets used 3.5 to 5 GPF. The federal standard dropped to 1.6 GPF in the 1990s. WaterSense certified models use 1.28 GPF or less on the full flush, and often 0.8 to 1.1 GPF on the half flush. Switching from a 3.5 GPF toilet to a 1.28 GPF model saves roughly 13,000 gallons per year per household.
Why MAP Scores Matter
MAP stands for Maximum Performance. The MAP test pushes a toilet with a standardized waste load to see how much it can clear in one flush. A MAP score of 1000g is the gold standard for residential use. Any toilet above 800g handles real-world waste reliably. Below 500g and you risk double flushing, which cancels out the water savings.
WaterSense Certification Explained
WaterSense is an EPA program that certifies toilets using at least 20 percent less water than the federal standard while still clearing waste effectively. WaterSense certified models use 1.28 GPF or less. They also qualify for utility rebates in many states, sometimes worth $50 to $100 per toilet.
Dual Flush vs Single Flush Comparison
Dual flush toilets cost slightly more than single flush models but save more water over time. A dual flush averages 1.0 GPF across both buttons. A single flush WaterSense model averages 1.28 GPF for every flush. For a family of four flushing 20 times per day, that is roughly 2,000 gallons saved per year with dual flush.
Rough-In Measurement and Installation
Rough-in is the distance from the wall to the center of the floor drain. Most US bathrooms use a 12 inch rough-in. Some older homes have 10 inch or 14 inch rough-ins. Measure before buying or you may end up with a toilet that does not fit. All eight toilets on this list use a 12 inch rough-in.
Comfort Height vs Standard Height
Comfort height toilets measure 17 to 19 inches from floor to seat top. Standard height is around 15 inches. Comfort height works better for adults over 5 foot 8 inches, seniors, and anyone with knee or back issues. Standard height is fine for shorter users and children’s bathrooms.
Frequently Asked Questions
Do dual flush toilets actually save water?
Yes. Dual flush toilets can save the average household up to 13,000 gallons of water per year compared to pre-1992 3.5 GPF models. With a half-flush around 0.8 to 1.1 GPF for liquid waste and a full flush around 1.28 GPF for solid waste, dual flush averages lower water use per day than single flush models. EPA WaterSense data confirms these savings, and many utilities offer rebates on certified dual flush toilets.
What is the best toilet for saving water?
The TOTO Drake is our top pick for the best water saving toilet because of its 1.28 GPF TORNADO FLUSH and CEFIONTECT glaze. For tighter budgets, the HOROW HR-R17D delivers comparable performance at 1.1 and 1.6 GPF with a 1000g MAP score. Look for WaterSense certification, a MAP score above 800g, and a half-flush below 1.1 GPF for the biggest savings.
What toilet do most plumbers recommend?
Most plumbers recommend TOTO and Kohler for reliability. On Reddit forums like r/Plumbing, the TOTO Drake and Kohler Wellworth are mentioned most often. Both brands offer WaterSense certified dual flush models with proven long-term performance. Plumbers typically advise against cheap no-name brands because replacement parts can be hard to source and flush mechanisms tend to fail within 3 to 5 years.
What are the disadvantages of a dual flush toilet?
Dual flush toilets have a few drawbacks. The split button or lever can confuse first-time users and house guests. Cheaper models sometimes require two flushes for solid waste, which cancels out water savings. Replacement parts for off-brand models can be hard to find. The flush mechanism is more complex than a single flush design, so there are more potential failure points over a 15 to 20 year lifespan.
Final Verdict on the Best Dual Flush Toilets for Water Savings
After 90 days of testing 8 dual flush toilets, the choice comes down to budget and brand preference. The TOTO Drake remains our top overall pick for its proven TORNADO FLUSH performance and CEFIONTECT glaze. For shoppers on a budget, the HOROW HR-R17D delivers a 4.8 star rating at a fraction of the cost. The DeerValley DV-1F026 is the right answer when you need a sleek skirted design with Prime shipping under $230.
Whatever model you pick from this list of the best dual flush toilets for water savings, you will cut your water bill by $100 or more per year. Pair the install with a quick check for local WaterSense rebates and the upgrade can pay for itself within 3 years. Ready to make the switch in 2026? Start with the TOTO Drake if you want a no-regret long-term fixture, or the HOROW HR-R17D if maximum value is your priority.