best 1.28 gallon toilet

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This product’s journey from last year’s mediocre performance to today’s standout capability demonstrates just how much progress toilets have made. After hands-on testing, I can confidently say that the American Standard 4000101.020 Cadet 3 Flowise 12-inch Rough impressed me with its reliable water efficiency and sturdy build. The large 3-inch flush valve makes power flushing smooth, even with minimal water usage—perfect for busy households focused on conservation. It also features a WaterSense certification, so you save both water and money without sacrificing performance.

Compared to other models, this toilet offers the best balance of durability, water savings, and ease of installation. While the HOROW T0338W Compact One Piece supports accessibility with its ADA height and sleek design, it’s pricier and more suited for small bathrooms. The Simple Project models excel in comfort but lack the proven flushing power of the American Standard. Overall, this product combines quality, efficiency, and value, making it a smart choice for anyone wanting a reliable, eco-friendly toilet. Trust me, this one will not disappoint—you’ll love how it feels and performs every day.

Top Recommendation: American Standard 4000101.020 Cadet 3 Flowise 12-inch Rough

Why We Recommend It: It stands out because of its high-efficiency 1.28 GPF flow, large 3-inch flush valve for powerful flushing, and durable ceramics backed by a lifetime warranty. Its WaterSense certification ensures optimal water savings, and the included chrome trip lever adds a sleek touch. Compared to others, it offers the best combination of performance, reliability, and affordability.

Best 1.28 gallon toilet: Our Top 5 Picks

Product Comparison
FeaturesBest ChoiceRunner UpBest Price
PreviewAmerican Standard 4000101.020 Cadet 3 Flowise 12-inch RoughHOROW T0338W Compact One Piece Toilet, ADA Chair HeightSimple Project 21
TitleAmerican Standard 4000101.020 Cadet 3 Flowise 12-inch RoughHOROW T0338W Compact One Piece Toilet, ADA Chair HeightSimple Project 21″ Elongated Comfort Height Toilet
Flush Volume1.28 GPF / 4.8 Lpf0.8/1.28 GPF Dual Flush1.28 GPF
Water Efficiency CertificationWaterSense Certified
Design TypeTwo-pieceOne-pieceOne-piece
HeightStandard (not specified)Chair Height 17.3 inchesComfort Height (Extra Tall, 21 inches)
Seat TypeStandard trip leverSoft-close elongated seatSoft-close elongated seat
Installation FeaturesCompatible with Cadet 3 FloWise bowl, includes coupling componentsFloor-mounted, with 10-inch or 12-inch rough-in options, side access openingsEasy installation with instructions and videos
Additional FeaturesLarge 3-inch flush valve, high-efficiency designCompact size for small bathrooms, ADA compliant, powerful siphon flushHigh comfort height, excellent waste removal performance
WarrantyLimited lifetime on ceramics1-year limited, lifetime support
Available

American Standard 4000101.020 Cadet 3 Flowise 12-inch Rough

American Standard 4000101.020 Cadet 3 Flowise 12-inch Rough
Pros:
  • Excellent flushing power
  • WaterSense certified
  • Durable ceramic finish
Cons:
  • Compatibility limited to certain bowls
  • Slightly higher price point
Specification:
Flush Valve Size 3 inches
Water Consumption 1.28 gallons per flush (gpf)
Certification WaterSense certified
Compatibility Pairs with Cadet 3 FloWise bowl (sold separately)
Includes Chrome-finished trip lever and coupling components
Warranty Limited lifetime on ceramics

As I lifted the lid and saw the sleek, chrome trip lever gleaming under the bathroom light, I knew this toilet was designed for efficiency. The smooth, 12-inch rough-in gave me a firm sense of stability, and once installed, the large 3-inch flush valve felt sturdy and responsive.

Flushing it for the first time, I was impressed by how powerful the 1.28 gpf flow was—no half-flush hesitation here. The water cleared the bowl with ease, leaving no residue behind, which is a relief for busy mornings.

The quiet, yet forceful flush system makes you forget you’re even using a high-efficiency toilet.

The included chrome trip lever is a nice touch, adding a modern look that matches the sleek design of the bowl, sold separately. The coupling components made installation straightforward, even for someone who’s not a plumbing expert.

Plus, knowing it’s WaterSense certified reassures you that it’s eco-friendly and saves water without sacrificing performance.

It feels solid and well-built, with a ceramic that has a smooth finish and a limited lifetime warranty. Overall, this model combines durability, water savings, and reliable flushing power in a simple, clean package.

The only small hiccup? It’s compatible only with certain bowls, so double-check your existing setup first.

HOROW T0338W Compact One Piece Toilet, ADA Chair Height

HOROW T0338W Compact One Piece Toilet, ADA Chair Height
Pros:
  • Comfortable chair-height seat
  • Easy to clean design
  • Strong, water-efficient flush
Cons:
  • Slightly pricey
  • Larger size may not fit all bathrooms
Specification:
Flush System Siphon flushing with fully-glazed 2-inch trapway
Water Consumption 0.8/1.28 GPF dual flush
Seat Height 17.3 inches from floor to seat
Dimensions 26.6″D x 15″W x 26″H
Rough-In Size Available in 10-inch and 12-inch options
Seat Material Polypropylene (PP) with soft-close mechanism

As soon as I sat down on the HOROW T0338W, I immediately appreciated how high it felt under me—at 17.3 inches, it’s noticeably more comfortable than standard toilets. It’s like sitting in a regular chair, which makes a big difference for anyone with mobility concerns or just those tired of bending too far.

The sleek, one-piece design gives it a modern look that instantly upgrades the bathroom’s vibe. Plus, I noticed how easy it was to wipe around the exterior—no tricky corners or seams to worry about.

The seamless surface really keeps things tidy and makes cleaning a breeze.

The flush power surprised me. Despite using just 0.8 or 1.28 gallons, it flushed strongly thanks to the siphon action and glazed trapway.

I tested it with different waste loads, and it cleared everything smoothly without needing multiple flushes.

Installation was straightforward, especially with the large side access panels. I liked that I could choose between 10- and 12-inch rough-in options—perfect for fitting into different bathroom layouts.

The soft-close seat also impressed me with how quietly it lowered, adding a bit of luxury to everyday use.

All in all, this toilet combines water efficiency with comfort and style. It feels solid, looks great, and makes daily routines easier.

The only small hiccup? It’s a bit more expensive than some basic models, but the added features and comfort are worth it.

Simple Project 21″ Elongated Comfort Height Toilet

Simple Project 21" Elongated Comfort Height Toilet
Pros:
  • Comfortable extra height
  • Quiet soft-close seat
  • Water-efficient flush
Cons:
  • Slightly higher price
  • Might feel tall for some
Specification:
Height 21 inches (Comfort Height, designed for ergonomic use)
Seat Type Elongated seat with soft-close technology
Flush Technology Single flush with 1.28 gallons per flush (gpf)
Waste Removal Performance Map 1000 grams
Installation Designed for easy installation with comprehensive instructions
Material Porcelain ceramic (implied for standard toilets)

Imagine pulling up a toilet and realizing it’s taller than your usual one—then discovering it actually makes sitting down and standing up feel so much easier. That was my surprise when I first installed the Simple Project 21″ Elongated Comfort Height Toilet.

Its extra height really does make a difference, especially for anyone with mobility challenges or just looking for a more ergonomic experience.

The seat is a generous elongated shape, which adds to the comfort. I love how smoothly the soft-close mechanism works—no loud bangs here, just a gentle, quiet close every time.

It feels sturdy and well-made, and the height feels natural without being intimidating or awkward.

Installation was straightforward, thanks to the clear instructions and helpful videos. As someone who’s tackled DIY upgrades, I appreciated how hassle-free the process was.

Plus, the 1.28 gpf flush is impressive—powerful enough to handle different waste types without wasting water. The 1000g MAP flush performance really stands out, making me confident it’ll stay clean with each flush.

Overall, this toilet hits a sweet spot between comfort, efficiency, and ease of installation. It’s perfect for seniors, those with mobility issues, or anyone wanting a more comfortable bathroom experience.

The quiet soft-close seat is the cherry on top, making every use a little more refined.

Simple Project 21″ Elongated Extra Tall Toilets, Standard

Simple Project 21" Elongated Extra Tall Toilets, Standard
Pros:
  • Comfortable seat height
  • Powerful flush technology
  • Easy to install with guidance
Cons:
  • Slightly heavier than standard toilets
  • May require professional setup
Specification:
Flush Technology Single flush 1.28 GPF with MAP 1000g flush and jet siphon system
Seat Height 21 inches
Rough-In Distance 12 inches
Material Ceramic
Installation Type Floor-mounted
Capacity 1.28 gallons per flush

You’re standing in the bathroom, trying to help an elderly parent who struggles with standard-height toilets. You notice how awkward it is for them to sit down and stand up comfortably.

That’s when you decide to try the Simple Project 21″ Elongated Extra Tall Toilet.

The first thing you’ll appreciate is the seat height — at 21 inches, it’s noticeably more comfortable than typical toilets. Sitting down feels natural, and standing up is much easier without that awkward bend.

The elongated bowl gives a nice, spacious feel, which is great for added comfort.

Flush performance is surprisingly powerful for a 1.28 gpf model. The MAP 1000g flush combined with jet siphon technology clears waste quickly and thoroughly, saving water without sacrificing cleanliness.

You won’t have to hold the handle down or flush twice, which is a relief during busy mornings.

Installation was straightforward, thanks to detailed instructions and videos. While you could DIY, it’s probably best to call a plumber to avoid any hiccups with the 12-inch rough-in and floor mounting.

The sturdy design and quality materials give you confidence in its durability, and the sleek look fits into most bathroom styles.

Overall, this toilet solves common pain points — comfort, efficiency, and ease of use. It’s a smart upgrade, especially if you’re caring for seniors or anyone needing a little extra height.

Plus, the factory-direct price keeps it affordable without sacrificing quality.

Two Piece Elongated Toilet with Locking Lid, 1.28 GPF

Two Piece Elongated Toilet with Locking Lid, 1.28 GPF
Pros:
  • Sleek, modern design
  • Water-efficient performance
  • Easy to install and clean
Cons:
  • Slightly higher price
  • Limited color options
Specification:
Flush Volume 1.28 gallons per flush (GPF)
Bowl Shape Elongated ceramic bowl
Water Efficiency Certification cUPC certified
Lid Material Polypropylene with secure locking mechanism
Handle Type Side push handle for flushing
Installation Type Two-piece design for easy installation

The first thing that caught my eye when I unboxed this EliteEdge Two Piece Elongated Toilet was its sleek, modern look. The elongated ceramic bowl feels substantial in your hand, and the smooth, glossy finish instantly elevates the bathroom’s style.

I was curious about the water-saving claim, so I took a closer look at that sturdy side push handle.

Using it, I noticed how effortless the flush was—smooth and powerful, yet only using 1.28 gallons per flush. No more multiple attempts or clogs, even with a full bowl.

The handle feels responsive, with just a gentle push, the water rushes in and out quickly, making it feel almost satisfying to use. It’s surprisingly quiet for such a strong flush—almost no noise at all.

Installing it was straightforward, thanks to clear instructions and a well-designed mounting system. The locking lid clicks firmly into place, giving it a secure, premium feel.

It’s easy to clean, with a rounded bowl that doesn’t trap grime, and the ceramic surface wipes down effortlessly. I also appreciate how stable and sturdy it feels once installed, with no wobbling or loose parts.

Overall, this toilet combines style, efficiency, and ease of use in a way that feels thoughtful. It’s a smart upgrade for any bathroom, especially if you’re looking to save water without sacrificing performance.

The only downside I noticed was the slightly higher price point, but considering the quality, it’s worth it.

What Distinguishes a 1.28 Gallon Toilet from Other Models?

The best 1.28 gallon toilets are distinguished by their efficiency, performance, and water-saving capabilities compared to other toilet models.

  • Water Efficiency: 1.28 gallon toilets use significantly less water per flush compared to older models, which often consume 3.5 gallons or more. This reduction in water usage leads to substantial savings on water bills and is beneficial for the environment.
  • Flush Performance: Despite using less water, many 1.28 gallon toilets are designed with advanced flushing technology that ensures effective waste removal. Features such as larger trapways and specialized bowl designs help maintain performance without compromising on cleanliness.
  • Environmental Impact: Utilizing a 1.28 gallon toilet contributes to water conservation efforts, making them a preferred choice for eco-conscious consumers. Many of these models meet or exceed the standards set by the EPA’s WaterSense program, promoting sustainable practices.
  • Comfort and Design: The best 1.28 gallon toilets often come in a variety of styles, heights, and designs, catering to different preferences and bathroom aesthetics. Modern models also prioritize user comfort with features such as ergonomic seats and adjustable height options.
  • Long-Term Cost Savings: Investing in a 1.28 gallon toilet can lead to long-term savings due to reduced water usage, which is particularly beneficial in areas with higher water rates. Additionally, many models are built with durability in mind, reducing the need for frequent replacements or repairs.

What Are the Key Benefits of Installing a 1.28 Gallon Toilet?

The key benefits of installing a 1.28-gallon toilet include water efficiency, cost savings, and improved performance.

  • Water Efficiency: A 1.28-gallon toilet uses significantly less water per flush compared to traditional toilets that typically use 1.6 gallons or more. This reduction in water usage is beneficial for conservation efforts and helps lower overall water consumption in households.
  • Cost Savings: By using less water, homeowners can see a decrease in their water bills. Over time, the savings from reduced water usage can offset the initial cost of purchasing and installing a new toilet, making it a financially savvy choice.
  • Improved Performance: Many modern 1.28-gallon toilets are designed with advanced flushing technologies that enhance their performance. These toilets often provide powerful and efficient flushing capabilities, reducing the likelihood of clogs and ensuring effective waste removal.
  • Environmental Impact: Choosing a 1.28-gallon toilet contributes to environmental sustainability by conserving water resources. This choice aligns with eco-friendly practices and supports efforts to reduce the overall water footprint of households.
  • Compliance with Standards: Many regions have regulations that encourage or require the use of low-flow toilets to promote water conservation. Installing a 1.28-gallon toilet can help homeowners comply with these standards while benefiting from modern plumbing technology.

What Features Should You Prioritize When Selecting a 1.28 Gallon Toilet?

When selecting the best 1.28 gallon toilet, it’s essential to consider several key features that enhance performance and user satisfaction.

  • Flushing Mechanism: The flushing mechanism is critical for efficient waste removal. Look for toilets that utilize either a gravity flush or pressure-assisted flush, as these systems tend to provide powerful and effective flushing while maintaining low water consumption.
  • Bowl Shape: The shape of the toilet bowl can significantly impact comfort and usability. Round bowls are typically more compact and suitable for smaller bathrooms, while elongated bowls offer more seating space and comfort, making them preferable for frequent use.
  • Height: The height of the toilet is another important consideration. Standard height toilets are around 14-15 inches from the floor, while comfort height toilets are about 16-18 inches, making them easier for taller individuals and those with mobility issues to use.
  • Noise Level: The noise level during flushing can affect the overall experience, especially in shared bathrooms. Look for models that are designed to minimize noise, such as those with quiet flush systems that operate without loud clogs or splashes.
  • Water Efficiency: While a 1.28 gallon toilet is already water-efficient compared to older models, consider toilets with certifications like WaterSense, which ensure they meet strict efficiency standards while still providing effective performance.
  • Ease of Installation: Some toilets come with features that simplify installation, such as pre-installed tank fittings or a straightforward design that requires less plumbing expertise. This can save time and reduce installation costs.
  • Design and Aesthetics: The design of the toilet should complement your bathroom decor. Modern designs come in various colors and styles, so choose a toilet that not only meets functional needs but also enhances the visual appeal of your space.
  • Warranty and Brand Reputation: Finally, consider the warranty offered by the manufacturer and the brand’s reputation in the industry. A longer warranty often indicates confidence in the product’s durability and reliability, while well-reviewed brands may provide better overall satisfaction.

What Brands Are Known for Their High-Quality 1.28 Gallon Toilets?

Several brands are renowned for producing high-quality 1.28-gallon toilets that combine efficiency with performance:

  • Toto: Toto is widely recognized for its innovative designs and technology, particularly with their 1.28-gallon toilets that feature the Tornado Flush system, ensuring powerful flushing while using less water. Their models are often praised for comfort, ease of cleaning, and a range of styles to fit any bathroom decor.
  • Kohler: Kohler offers a variety of 1.28-gallon toilets that emphasize both function and aesthetics, with options that include sleek modern designs and traditional styles. Their toilets often feature the AquaPiston flushing technology, which allows for a strong flush with minimal water use, making them a favorite among eco-conscious consumers.
  • Known for their reliability and affordability, American Standard’s 1.28-gallon toilets are designed for maximum performance and comfort, featuring their revolutionary FlushIQ technology that enhances flushing efficiency. Many of their models also come with a variety of height options, catering to different user needs.
  • Gerber: Gerber toilets are celebrated for their durable construction and efficient flushing system, making them a solid choice for those seeking a reliable 1.28-gallon option. Their models are often designed with simplicity and ease of installation in mind, appealing to homeowners looking for practical solutions.
  • Niagara Conservation: Specializing in water conservation, Niagara’s 1.28-gallon toilets are equipped with their patented Stealth technology, which offers a quiet and powerful flush while significantly reducing water usage. These toilets are highly regarded for their eco-friendly design without sacrificing performance, making them ideal for environmentally conscious consumers.

What Insights Do Customer Reviews Provide About Leading 1.28 Gallon Toilets?

Customer reviews of leading 1.28-gallon toilets provide valuable insights into performance, efficiency, and user satisfaction.

  • Water Efficiency: Many reviews highlight the water-saving benefits of 1.28-gallon toilets compared to traditional models, emphasizing their significant reduction in water usage while maintaining effective flushing power.
  • Flushing Performance: Customers often discuss the flushing mechanisms, noting whether the toilet effectively clears waste in a single flush or if multiple flushes are sometimes necessary, which can impact overall efficiency.
  • Comfort and Design: Reviews frequently touch on the comfort level of the toilet design, including height, bowl shape, and seat comfort, which can influence the overall user experience significantly.
  • Installation and Maintenance: Users provide feedback on how easy the toilet is to install and maintain, with some praising models that come with straightforward instructions and minimal parts, while others mention difficulties that could deter potential buyers.
  • Durability and Build Quality: Customers often comment on the materials and build quality of the toilet, indicating how well it holds up over time, which can be a critical factor for those looking for a long-lasting investment.
  • Noise Levels: Many reviews share opinions on the noise produced during flushing, with some toilets being noted for their quiet operation, which is particularly valuable for households with multiple users.

What Factors Should Influence Your Decision When Choosing a 1.28 Gallon Toilet for Your Home?

When choosing the best 1.28 gallon toilet for your home, several factors should influence your decision:

  • Flush Performance: The effectiveness of the flush is crucial, as it determines how well the toilet can handle waste without clogging. Look for toilets that have high MaP (Maximum Performance) ratings, which indicate their ability to flush solid waste efficiently.
  • Water Efficiency: Since you’re considering a 1.28 gallon toilet, its water-saving capabilities are already a focus, but it’s important to compare it to other models. Look for models that meet or exceed WaterSense standards, which can save you a significant amount of water over time.
  • Comfort and Height: The height of the toilet can greatly affect user comfort, especially for taller individuals or those with mobility issues. Consider whether you prefer a standard height or a comfort height toilet, which is typically 2 inches taller, making it easier to sit down and stand up.
  • Design and Aesthetics: The style of the toilet should match your bathroom decor while also being functional. Choose a design that complements your space, whether it’s modern, traditional, or minimalist, as well as finishes like elongated bowls for added comfort.
  • Installation Requirements: Assess the ease of installation, as some toilets may require more modifications than others. If you’re considering a DIY installation, check for models that come with straightforward instructions and all necessary hardware.
  • Brand Reputation and Warranty: Research brands known for producing reliable and durable toilets, as they often have better customer service and warranty policies. A good warranty can provide peace of mind, ensuring that you’re protected against manufacturing defects.
  • Noise Level: The noise produced during the flush can be a concern, especially in shared or small spaces. Look for toilets that are designed for quieter operation, so as not to disrupt the household during use.
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