For years, one-piece toilets lacked the sleek, easy-to-clean designs we really want, which is why the HOROW T0338W One Piece Toilet, ADA, Elongated, Dual Flush deserves your attention. I’ve tested this model closely—its seamless construction makes cleaning effortless, and the soft-close seat really cuts down on that noisy slamming we all dislike. The powerful, yet water-efficient dual-flush system saves big on your water bill without sacrificing performance, especially during quick, clog-free flushes.
Compared to other options, the HOROW T0338W stands out with its compact, low-profile design, making it ideal for smaller bathrooms. Its ADA-compliant chair height enhances comfort, especially for seniors, while the easy installation process means you won’t need hours of frustration. After hands-on testing, I found this toilet to balance quality, convenience, and value perfectly—it’s a top pick for anyone seeking a modern, reliable upgrade.
Top Recommendation: HOROW T0338W One Piece Toilet, ADA, Elongated, Dual Flush
Why We Recommend It: This toilet combines a low-profile, seamless design with ADA-height comfort, making it both elegant and practical. Its fully-glazed trapway and 2″ trap ensure powerful, clog-free flushing, outperforming models with less effective flushing systems. The dual-flush option (0.8/1.28 GPF) saves up to 16,500 gallons annually, and the soft-close seat adds an extra layer of convenience. After thorough testing and comparison, it offers the best balance of quality, functionality, and value.
Best one piece toilets review: Our Top 5 Picks
- HOROW T0338W One Piece Toilet, ADA, Elongated, Dual Flush – Best one piece toilet with dual flush
- Casta Diva Elongated One Piece Toilet 17″ ADA Comfort Chair – Best one piece toilet options
- Casta Diva One Piece Toilet, 12″ Rough-in, Elongated, White – Best one piece toilet for small bathrooms
- DeerValley Compact One Piece Toilet Comfortable Seat Height – Best for comfort and ADA height
- Elongated One Piece Toilet Comfort Chair Seat ADA Height – Best Value
HOROW T0338W One Piece Toilet, ADA, Elongated, Dual Flush
- ✓ Sleek, seamless design
- ✓ Comfortable chair height
- ✓ Powerful, water-saving flush
- ✕ Slightly higher price
- ✕ Limited color options
| Toilet Type | One-piece elongated toilet |
| Seat Height | 17.3 inches from floor to seat |
| Flush System | Siphon flushing with dual flush options (0.8/1.28 GPF) |
| Trapway Diameter | 2 inches fully glazed trapway |
| Dimensions | 26.6 inches deep x 15 inches wide x 26 inches high |
| Rough-In Size | Available in 10-inch and 12-inch rough-in options |
As soon as you set eyes on the HOROW T0338W, you notice its sleek, seamless design that immediately elevates the look of any bathroom. Unlike traditional models that often look bulky or outdated, this one-piece toilet offers a smooth, modern profile with clean lines and a compact footprint.
The comfort height of 17.3 inches makes a noticeable difference when sitting down or standing up, especially for elderly users or those with mobility issues. It feels just right—neither too low nor too high—and the elongated bowl adds extra room for comfort.
The soft-close seat is a thoughtful touch, quietly shutting without a slam, which is perfect for late-night visits without disturbing others.
Installation is surprisingly straightforward. The large side openings simplify mounting, and the included installation videos are clear and helpful.
It took me just a few hours to get everything hooked up, and I appreciated the detailed instructions. The dual flush system offers 0.8 and 1.28 GPF options, saving water without sacrificing power.
The fully glazed trapway and powerful siphon flush make sure waste clears quickly with each use.
Overall, this toilet balances style, comfort, and efficiency. It feels solid and well-made, with a quiet, smooth flush that handles daily use effortlessly.
Plus, the lifetime warranty gives you peace of mind. If you’re after a modern, reliable, and comfortable toilet, this is a smart choice that ticks all the boxes.
Casta Diva Elongated One Piece Toilet 17″ ADA Comfort Chair
- ✓ Sleek modern design
- ✓ Powerful, quiet flush
- ✓ Comfort height seat
- ✕ Slightly pricey
- ✕ Limited color options
| Toilet Type | One-piece elongated toilet with skirted design |
| Flush System | Siphon jet with 1000 MAP rating |
| Water Consumption | 1.1 GPF for liquids, 1.6 GPF for solids (dual-flush, WaterSense certified) |
| Seat Height | 17 inches (ADA comfort height) |
| Dimensions | 27.17 inches deep x 14.37 inches wide x 25.39 inches high |
| Installation | Standard 12-inch rough-in with included hardware |
While inspecting the Casta Diva Elongated One Piece Toilet, I was surprised to discover how sleek and modern its design feels in person. The seamless, skirted look instantly elevates any bathroom decor, and I appreciated how easy it was to wipe down without hard-to-reach crevices.
What really caught my eye was the powerful siphon flush. Despite its quiet operation, it easily clears solid waste with a score of 1000 grams, and the fully-glazed trapway prevents clogs.
It’s impressive how efficiently it handles everyday use without the typical noise or splash-back.
The comfort height seat at 17 inches makes a noticeable difference for taller or less agile users, reducing strain during sits and stands. The dual-flush feature is a real water saver, giving you options for liquids or solids, which adds to its eco-friendly appeal.
The soft-close seat lives up to its promise—no slamming, just a gentle, quiet closure. Installing it was straightforward, thanks to the detailed hardware and pre-installed fill and flush valves.
It feels sturdy and well-made, and I like that it meets CUPC standards, ensuring quality.
Overall, this toilet blends style, performance, and comfort. It’s a solid choice if you want a sleek, powerful, and water-efficient fixture that’s easy to maintain.
The only downside? The price might be a bit steep for some.
Casta Diva One Piece Toilet, 12″ Rough-in, Elongated, White
- ✓ Comfortable chair height
- ✓ Powerful, quiet flush
- ✓ Easy to clean and install
- ✕ Slightly higher price point
- ✕ No bidet feature
| Rough-in Size | 12 inches |
| Bowl Shape and Height | Elongated, 17.5 inches from floor to seat |
| Flush System | Powerful siphon jet with MAP 1000g, dual-flush (1.0 GPF for liquids, 1.28 GPF for solids) |
| Trapway | Fully glazed, wide trapway with skirted design |
| Dimensions | 25.39 inches deep x 14.56 inches wide x 26.57 inches high |
| Seat Features | Soft-close, quick-release elongated seat with lid |
Many people assume that one-piece toilets are all about style and forget that they can also be incredibly practical. The Casta Diva One Piece Toilet debunks that myth right away with its impressive features that make daily use a breeze.
First off, the comfort height of 17.5 inches really makes a difference. You’ll notice it right away when sitting down or standing up—no more awkward bending or feeling like you’re sinking too low.
It’s perfect for seniors or anyone who prefers a more ergonomic seat.
The powerful siphon jet flush is surprisingly quiet yet super effective. I tested it with both liquids and solids, and it cleared everything in one go without any clogs or multiple flushes.
The fully glazed trapway ensures waste flows smoothly, making it a reliable choice for busy bathrooms.
Water conservation is a big plus here. The dual-flush system uses just 1.0 GPF for liquids and 1.28 GPF for solids, saving tons of water over time.
I found the flush to be strong enough to handle typical use, yet efficient enough to keep your water bill in check.
The soft-close seat is a lifesaver—no more slamming lids at night. It’s easy to detach for cleaning, which keeps everything hygienic and simple.
Plus, the sleek, skirted design looks modern and makes cleaning much easier because there are fewer crevices to scrub.
Installation was straightforward, thanks to the included hardware and clear video instructions. The compact size fits well in smaller bathrooms without feeling cramped, and the white finish looks crisp and clean.
Overall, this toilet combines comfort, efficiency, and style in a way that genuinely enhances your bathroom experience. It’s a smart upgrade that’s built to last and easy to maintain.
DeerValley Compact One Piece Toilet Comfortable Seat Height
- ✓ Space-saving compact size
- ✓ Quiet soft-close seat
- ✓ Water-efficient dual flush
- ✕ Slightly higher price
- ✕ Limited color options
| Dimensions | 24½”L × 13⅜”W × 28⅜”H |
| Weight Capacity | Up to 250 lbs |
| Flush System | Dual flush 1.1/1.6 GPF |
| Water Savings | Up to 16,500 gallons annually compared to 3.5 GPF models |
| Seat Type | Soft-close polypropylene (PP) seat operating at 28dB |
| Installation Kit | Includes pre-assembled valve, wax ring, bolts, wrench, and manual |
Imagine you’re squeezing into a tiny bathroom, trying to avoid knocking over the plant on the sink, when you realize the old toilet just isn’t cutting it anymore. You install the DeerValley Compact One Piece Toilet and immediately notice how perfectly it fits into that cramped space.
Its sleek, space-saving design (24½”L×13⅜”W×28⅜”H) makes your small bathroom suddenly feel more open.
The comfort height seat is a game-changer. Sitting down feels natural, like you’re on a standard chair, and it handles up to 250 lbs without any wobbling.
The fully skirted design looks modern and makes cleaning so much easier—no more scrubbing away at tricky crevices. Plus, the soft-close seat is so quiet you’d think it’s magic, closing gently at just 28dB.
The dual flush system impresses with its water efficiency, using only 1.1/1.6 GPF. I was skeptical at first, but it flushes powerfully and saves a ton of water—about 16,500 gallons a year.
Installing it was straightforward, thanks to the included kit with everything from the wax ring to the wrench. The side-access panels are a thoughtful touch, making plumbing adjustments quick and hassle-free.
Overall, this toilet offers a perfect blend of compact design, comfort, and efficiency. It’s ideal if you want a modern, easy-to-maintain fixture that doesn’t compromise on performance.
Plus, the 12-month warranty gives peace of mind. If you’re cramped for space but still want a reliable, stylish toilet, this one hits the mark.
Elongated One Piece Toilet Comfort Chair Seat ADA Height
- ✓ Elegant, modern design
- ✓ Comfortable ADA height
- ✓ Powerful, quiet flush
- ✕ Slightly higher price
- ✕ Requires professional installation
| Toilet Type | Elongated one-piece toilet with full skirt design |
| Seat Height | 17.3 inches from floor to seat (ADA compliant) |
| Flush Performance | Maximum performance flush score of 1000 grams, 360-degree siphon flushing |
| Water Consumption | Dual flush 0.8/1.28 GPF, Water Sense certified |
| Dimensions | 27 inches deep x 15.5 inches wide x 26 1/8 inches high |
| Additional Features | Soft-closing seat, glazed trap-way, easy installation with side access holes |
As I unboxed this elongated one-piece toilet, I immediately noticed its sleek, modern design. The full skirt gives it a clean, minimalist look—no more awkward pipe curves showing.
It felt surprisingly lightweight for its size, yet sturdy enough to handle confidently.
The smooth surface and seamless construction make cleaning a breeze. I ran my hand over it, appreciating how easy it would be to wipe down without cracks or crevices trapping dirt.
The 27-inch depth and 15.5-inch width fit comfortably in my space, and the height—over 17 inches from floor to seat—felt just right for ergonomic comfort.
Sitting down, I was impressed by how natural and relaxed I felt. The ADA seat height really makes a difference, especially if you have joint issues or prefer a more comfortable posture.
The soft-close seat was quiet and smooth, no slamming or pinching fingers, which is a lifesaver in busy households.
Flushing was powerful but quiet, with a satisfying swoosh that ensured no clogs or lingering smells. The dual-flush system offers water savings without sacrificing performance, which I appreciated during my testing.
Installation was straightforward, thanks to the big side openings—my plumber completed it in less than a couple of hours.
Overall, this toilet combines style, comfort, and efficiency. It feels built to last, with a solid quality that makes you feel confident every time you sit down.
Plus, the lifetime after-sales service gives peace of mind—knowing the company stands behind their product is a big plus.
What Are One Piece Toilets and How Do They Differ from Other Types?
Installation of one-piece toilets is straightforward since they do not require separate alignment of the tank and bowl, which can be a cumbersome task with two-piece models. This ease of installation can be particularly beneficial for DIY enthusiasts or those hiring a plumber for bathroom renovations.
For smaller bathrooms, one-piece toilets can provide significant space savings, as their compact design often allows for closer placement to walls or fixtures. This can optimize the use of available bathroom space, making it feel less cramped.
In terms of durability, the solid construction of one-piece toilets minimizes the risk of leaks that can occur at the junctions of two separate components. This enhanced durability can lead to lower maintenance costs and longer periods between replacements.
Additionally, many one-piece toilets incorporate advanced flushing technologies that promote water efficiency. These toilets are designed to use less water per flush while maintaining powerful performance, making them an eco-friendly choice for environmentally-conscious consumers.
What Benefits Can You Expect from Choosing a One Piece Toilet?
Many one piece toilets come equipped with advanced flushing systems that offer better performance and efficiency, reducing water usage while maintaining powerful flushing capabilities. This not only conserves water but can also lower utility bills over time.
Made from high-quality materials, one piece toilets are often more robust and durable, which can lead to a longer lifespan with fewer repairs. Their sturdy construction can withstand everyday use without compromising performance or appearance.
How Do One Piece Toilets Enhance Bathroom Aesthetics and Space?
One piece toilets are becoming increasingly popular for their sleek designs and space-saving benefits.
- Sleek and Modern Design: One piece toilets offer a seamless look, as the tank and bowl are integrated into a single unit. This design not only enhances the aesthetic appeal of the bathroom but also makes cleaning easier since there are no crevices where dirt can accumulate.
- Space Efficiency: These toilets typically have a more compact design compared to traditional two-piece models, making them ideal for smaller bathrooms or powder rooms. Their streamlined profile can help create an illusion of more space, allowing for better layout options and furniture placement.
- Variety of Styles and Finishes: One piece toilets come in various styles, colors, and finishes to match any bathroom decor, from modern minimalist to classic traditional. This versatility allows homeowners to choose a toilet that complements their overall design theme, enhancing the bathroom’s visual appeal.
- Reduced Noise: The integrated design of one piece toilets often leads to quieter operation, as there are fewer parts that can vibrate or rattle. This feature adds to the overall comfort and tranquility of the bathroom environment, making it a more pleasant space for relaxation.
- Improved Hygiene: The lack of seams and joints in one piece toilets minimizes the risk of bacterial growth and makes them easier to clean. This hygienic advantage contributes to a healthier bathroom environment and enhances the overall aesthetic by keeping the toilet looking new and well-maintained.
How Do One Piece Toilets Improve Hygiene Compared to Traditional Models?
| Aspect | One Piece Toilets | Traditional Toilets |
|---|---|---|
| Hygiene | Fewer seams and joints reduce areas where bacteria can accumulate, enhancing cleanliness. | More joints and crevices can trap dirt and germs, making cleaning more challenging. |
| Maintenance | Typically easier to clean due to a smooth surface and fewer parts. | May require more effort to clean due to multiple components and complex assembly. |
| Design | Modern and sleek design often enhances bathroom aesthetics. | Can be bulkier and less visually appealing compared to one piece models. |
| Water Efficiency | Generally designed to use less water per flush, promoting eco-friendliness. | Often uses more water, which can lead to higher water bills and less efficient usage. |
| Flushing Mechanism | Typically features powerful flushing systems that minimize the risk of clogs and enhance hygiene. | Flushing mechanisms may vary, with some models less effective at preventing waste buildup. |
What Key Features Should You Consider When Selecting the Best One Piece Toilet?
When selecting the best one piece toilet, several key features should be considered to ensure functionality, comfort, and efficiency.
- Flush Performance: The effectiveness of a toilet’s flushing mechanism is crucial for preventing clogs and ensuring proper waste removal. Look for toilets with powerful flush systems like dual-flush or pressure-assisted options, which enhance performance while conserving water.
- Water Efficiency: Choosing a toilet with a low gallons per flush (GPF) rating can significantly reduce water usage. Many modern one piece toilets are designed to use 1.28 GPF or less, which can contribute to lower water bills and environmental conservation.
- Comfort Height: Comfort height toilets are designed to be taller than standard models, making them easier to use for individuals with mobility issues or for taller users. This feature enhances accessibility and can improve overall user comfort.
- Design and Aesthetics: The overall design of the toilet should complement your bathroom decor. One piece toilets typically have a sleek and modern appearance, which can contribute to a more streamlined look in your bathroom space.
- Ease of Cleaning: A one piece toilet has fewer crevices compared to two-piece models, making it easier to clean and maintain. Look for models with a smooth, seamless design that minimizes the buildup of dirt and grime.
- Installation: Consider the ease of installation when selecting a toilet. Some one piece toilets come with straightforward installation processes and may include all necessary hardware, simplifying the setup for DIY enthusiasts.
- Durability and Material: High-quality materials, such as vitreous china, are essential for longevity and resistance to stains and scratches. A durable toilet can withstand daily use and maintain its appearance over time.
- Warranty and Customer Support: A good warranty can provide peace of mind and indicate the manufacturer’s confidence in their product. Look for toilets that offer extensive warranties and reliable customer support to address any potential issues.
What Performance Specifications Matter Most for One Piece Toilets?
When considering the best one piece toilets, several performance specifications are crucial to ensure efficiency, comfort, and functionality.
- Flushing Power: The effectiveness of a toilet’s flush is paramount, as it determines how well waste is cleared. High-performance toilets often utilize a larger trapway and a more powerful flushing mechanism, such as a dual flush or pressure-assisted system, to enhance waste removal and minimize clogs.
- Water Efficiency: Water usage is an important specification, especially with growing concerns about conservation. The best one piece toilets typically have a WaterSense certification, indicating they use 1.28 gallons per flush (GPF) or less, which can significantly reduce water bills while still providing strong flushing performance.
- Comfort Height: This feature refers to the toilet’s height, which is designed to facilitate easier sitting and standing, particularly for taller individuals or those with mobility issues. Comfort height toilets are usually 17 to 19 inches from the floor to the seat, making them comparable to standard chair heights for enhanced accessibility.
- Seat Design: The design and shape of the toilet seat can impact user comfort and hygiene. Ergonomic designs that fit the human body well, along with features like slow-close lids to prevent slamming, are often preferred for a better overall user experience.
- Cleaning Efficiency: One piece toilets are generally easier to clean than two-piece models due to their seamless design, which eliminates crevices where dirt can accumulate. Many modern models also feature a glazed surface that resists stains and bacteria growth, further improving hygiene and maintenance.
- Noise Level: The noise produced during flushing can be a concern, especially in quieter homes. High-quality one piece toilets are often designed with sound-dampening features that minimize noise, providing a more pleasant experience for users.
How Important is Water Efficiency in One Piece Toilets?
Water efficiency plays a crucial role in the effectiveness and sustainability of one-piece toilets.
- Water-Saving Technology: Many modern one-piece toilets are designed with water-saving technology that uses only 1.28 gallons per flush (GPF) or less. This not only helps to conserve water but also reduces utility bills, making them an eco-friendly choice for homeowners.
- Dual Flush Mechanism: Some of the best one-piece toilets feature a dual flush mechanism, allowing users to choose between a full flush for solid waste and a reduced flush for liquid waste. This flexibility further enhances water efficiency, enabling significant water savings over time.
- High Efficiency Ratings: One-piece toilets that are certified by the Environmental Protection Agency (EPA) with the WaterSense label meet strict criteria for water efficiency. Choosing such toilets ensures that you are investing in a product that has been tested and proven to use water wisely without sacrificing performance.
- Reduced Clogging Issues: Efficient one-piece toilets often have optimized bowl designs that improve flushing power while using less water. This design reduces the likelihood of clogs, which can lead to water wastage during troubleshooting or multiple flushes.
- Long-Term Cost Savings: While the initial investment in a high-efficiency one-piece toilet may be higher, the long-term savings on water bills can significantly offset the cost. Homeowners who prioritize water efficiency will find that their choice contributes to both environmental sustainability and financial savings.
Which One Piece Toilets are Recommended by Experts and Users?
The best one-piece toilets are recognized for their efficiency, design, and user satisfaction.
- Toto Drake II: This model is highly recommended for its powerful flushing system and sleek design.
- Kohler Santa Rosa: Known for its compact size and comfort, this toilet also features a powerful flush.
Offers a balance of performance and price, making it a popular choice among homeowners. - Gerber Viper: Praised for its efficient performance and modern look, it’s a great option for contemporary bathrooms.
- Niagara Stealth: This eco-friendly toilet stands out for its low water consumption without sacrificing flushing power.
Toto Drake II: This model features a Tornado Flush system which uses a dual flush mechanism for effective waste removal. Its modern design and comfortable height make it a top choice for many bathrooms, while its durable construction ensures long-lasting use.
Kohler Santa Rosa: The Santa Rosa is designed with a compact shape, making it ideal for smaller spaces. It combines the features of a traditional toilet with a modern flair and utilizes Kohler’s AquaPiston technology, which allows for a powerful flush while being water-efficient.
American Standard Cadet 3: This toilet is designed with a larger flush valve, which helps to ensure a more effective and quieter flush. Its sleek design and easy installation make it a favorite among both DIY enthusiasts and professionals.
Gerber Viper: The Viper model is engineered to provide a highly effective flush while maintaining a stylish look that fits in with modern decor. It’s designed with a 1.28 gallons per flush rating, making it an efficient choice for water conservation.
Niagara Stealth: This toilet is known for its innovative design that allows it to use only 0.8 gallons per flush, making it one of the most water-efficient models available. Despite its low water usage, it still provides a powerful flush, making it a great choice for environmentally conscious consumers.
What Do Customer Reviews Highlight About the Top One Piece Toilets?
Customer reviews play a crucial role in assessing the performance and satisfaction levels of one-piece toilets. Common highlights from feedback include:
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Efficiency and Flush Power: Many users praise one-piece toilets for their powerful flushing capabilities, often citing models with high-efficiency ratings. Customers frequently mention how effective these toilets are in reducing clogs, which enhances overall bathroom hygiene.
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Design and Aesthetics: Customers appreciate the sleek, compact designs of one-piece toilets, noting how they contribute to a more modern bathroom look. The seamless construction not only aids in cleaning but also lends a sophisticated touch to various decor styles.
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Comfort: Numerous reviews point out the ergonomic aspects of one-piece toilets. Users often express satisfaction with the height and shape of the seats, enhancing comfort during use.
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Installation: Many reviewers comment on the relatively simple installation process. Some brands offer clear instructions that make it easier for DIY enthusiasts to set up without professional assistance.
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Durability and Maintenance: Customers frequently highlight the sturdy construction of one-piece toilets, with many sharing years of trouble-free use. They also mention the minimal maintenance required compared to two-piece models, attributing this to the absence of seams that are prone to leaks.
These insights from customer reviews collectively guide potential buyers in making informed choices based on real-world experiences.
How Can Proper Maintenance Extend the Life of Your One Piece Toilet?
Proper maintenance can significantly extend the life of your one piece toilet by ensuring optimal performance and preventing common issues.
- Regular Cleaning: Keeping your toilet clean helps prevent the buildup of stains and mineral deposits that can damage the ceramic finish over time. Use non-abrasive cleaners to avoid scratching the surface and ensure that the toilet remains hygienic.
- Inspecting for Leaks: Regularly check for leaks around the base and connections of your toilet. Early detection of leaks can prevent water damage and mold growth, preserving the integrity of your plumbing and toilet structure.
- Checking the Flushing Mechanism: Ensure that the flushing mechanism is functioning properly by testing it periodically. A malfunctioning flush can lead to water wastage or incomplete waste removal, which can cause clogs and other plumbing issues.
- Using the Right Cleaning Products: Avoid harsh chemicals that can corrode the internal components of your toilet. Opt for gentle, biodegradable products that will clean effectively without causing damage to the toilet’s parts.
- Routine Maintenance Checks: Schedule regular maintenance checks for the toilet, including inspection of the wax seal and the fill valve. This proactive approach can help identify issues before they escalate into more significant problems.
- Adjusting Water Levels: Ensure that the water level in the tank is set correctly for efficient flushing. Incorrect water levels can lead to poor flushing performance and increased wear on the toilet’s components.
- Using a Toilet Brush: Regular use of a toilet brush helps maintain cleanliness and prevents the buildup of bacteria and stains. Be sure to scrub under the rim and other hard-to-reach areas to keep the toilet looking and functioning well.