11 Best 1.6 GPF Toilets for 2027
If your bathroom needs a dependable 1.6 GPF toilet, the best 1.6 gpf toilets for 2027 should make the choice clearer. Strong options balance bowl shape, height, flush power, cleaning ease, and rough-in fit.
This roundup covers full toilets, compact one-piece models, tank options, and rebuild kits for maintenance or upgrades. It includes choices like the American Standard Cadet PRO and the DeerValley compact one-piece model, plus parts for different needs.
The next sections review 11 toilets and explain which users each model suits, along with a buying guide for side-by-side comparison.
| Image | Name | Editor's Rating | Price |
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American Standard 215AA004.020 Cadet PRO Right Height...
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TOTO Drake Two-Piece Elongated 1.6 GPF Universal Height...
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Sloan Regal A-41-A Water Closet Diaphragm Assembly Kit...
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Sloan Regal 111 Manual Water Closet Flushometer, 1.6 GPF...
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DeerValley Compact One Piece Toilet Standard Seat Height for...
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American Standard Cadet PRO Elongated 2-Piece Toilet
- TRADE EXCLUSIVE TANK
- 12-INCH ROUGH-IN
- CHAIR-HEIGHT COMFORT — Measures 17” tall, including seat, for ease of use...
- ADA COMPLIANT — Meets Americans with Disabilities Act requirements for use and...
- POWERWASH RIM — Scrubs the bowl clean with every flush
The American Standard Cadet PRO Elongated 2-Piece Toilet gives you a durable toilet with chair-height comfort for easier daily use. Its elongated bowl and two-piece design make it a practical option for many home bathrooms.
A chair-height seat position of about 17 inches can make sitting down and standing up feel easier. That matters for anyone who wants a more comfortable toilet without changing the bathroom layout.
The PowerWash rim helps clean the bowl with each flush, which can reduce extra scrubbing. The metal trip lever and shank fill valve add sturdy parts that support long-term use.
It also uses vitreous china, giving it a solid, familiar toilet build. Color-matched details help it look more finished once installed.
The 12-inch rough-in helps it line up with many bathroom setups, and the elongated bowl adds a familiar seating shape. You will need to buy a seat separately, and the trade-exclusive tank may make replacement sourcing less straightforward.
Best for: Homeowners who want a durable elongated toilet with chair-height comfort and easier bowl cleaning.
What We Like:
- Chair-height seating can make sitting and standing easier.
- PowerWash rim helps clean the bowl with every flush.
- Metal trip lever adds sturdy everyday use.
- Vitreous china offers a solid, reliable toilet build.
- Elongated bowl provides a familiar, comfortable seating shape.
Specification
| Specification | User Benefit |
|---|---|
| Chair-height seat position: about 17 inches | Makes sitting and standing feel easier. |
| Elongated bowl | Adds a familiar, comfortable seating shape. |
| 2-piece design | Can be easier to handle during installation. |
| 12-inch rough-in | Fits many standard bathroom layouts. |
| PowerWash rim | Helps clean the bowl with each flush. |
| Material: vitreous china | Provides a solid, durable toilet build. |
TOTO Drake Two-Piece Elongated Toilet with CEFIONTECT
- POWERFUL PERFORMANCE WITH LESS FREQUENT CLEANING - TORNADO FLUSH swirls water in...
- MORE COMFORT ACROSS A WIDER RANGE OF INDIVIDUALS - TOTO's Universal Height is...
- REDUCE WATER USEAGE WITHOUT SACRIFICE - The 1.6 gallon per flush Drake enables...
- STYLISH AND MODERN DESIGN - Update your oasis with this stylish design that...
- COMPLETE YOUR TOILET - Finish your purchase with the addition of a TOTO...
The TOTO Drake two-piece toilet handles everyday flushing with less scrubbing and a more comfortable sitting height. Its elongated bowl and universal height make it easier to use in a wide range of bathrooms, while the two-piece build keeps the design familiar for home installation.
The TORNADO FLUSH system uses dual nozzles and a rimless, hole-free bowl to rinse surfaces more thoroughly. That matters when you want cleaner results with less wiping after each use.
CEFIONTECT adds a slick surface that helps waste slide off more easily. Together with the flush design, it supports a bowl that stays cleaner between scrubs.
It uses 1.6 GPF and a 3-inch flush valve, which helps balance water use with strong flushing. The Cotton White finish keeps the look simple and easy to coordinate.
This model installs on a 12-inch rough-in, so it works for bathrooms set up for that spacing. You’ll also need to buy the seat, wax ring, flange bolts, and supply line separately.
Skip it if you want an all-in-one toilet package or your bathroom uses a different rough-in.
Best for: Homeowners who want an elongated toilet with easy-clean features and efficient flushing for a 12-inch rough-in bathroom.
What We Like:
- TORNADO FLUSH rinses the bowl thoroughly with dual nozzles.
- CEFIONTECT helps waste slide off the surface more easily.
- Universal height supports more comfortable everyday use.
- 1.6 GPF balances water savings with flushing performance.
- 12-inch rough-in fits bathrooms built for that setup.
Specification
| Specification | User Benefit |
|---|---|
| Type: Two-piece toilet | Familiar design for standard home installation. |
| Bowl: Elongated | Offers a more comfortable seating shape. |
| Height: Universal height | Makes sitting and standing easier for many users. |
| Flush System: TORNADO FLUSH | Helps rinse the bowl more completely. |
| Water Use: 1.6 GPF | Uses less water per flush. |
| Rough-in: 12-inch | Fits bathrooms built for this spacing. |
| Finish: Cotton White | Blends easily with common bathroom styles. |
Sloan Regal A-41-A Water Closet Diaphragm Assembly Kit 1.6 GPF, Black
- WATER CLOSET DIAPHRAGM ASSEMBLY: Our Regal water closet diaphragm assembly kit...
- COMPATIBILITY CHECK: This water closet diaphragm assembly is specifically...
- INTELLIGENT DESIGN: Our Diaphragm Assemblies are specially crafted to limit...
- SLOAN GENUINE PARTS: Extend the life of your Sloan products. Our products...
- WATER CONNECTS US: Every day around the world, Sloan products connect the...
Sloan’s A-41-A diaphragm assembly helps keep compatible Regal flushometers flushing accurately at 1.6 GPF. If you notice weak flushes, waste, or inconsistent performance, replacing a worn diaphragm can restore steadier operation before the problem grows.
This genuine Sloan kit includes a natural rubber diaphragm and brass bypass. Both parts are built to Sloan’s specifications, which supports dependable replacement use in the right system.
It fits Sloan Regal Flushometers, including Clamshell #33010046. Part numbers 3301041 and 33010046 match the same specs, so it suits a narrow set of compatible units.
For someone maintaining a Sloan Regal flushometer, this black replacement kit can help support water savings, lower maintenance, and longer system life. It is a practical replacement when the existing diaphragm is the part causing the issue.
Keep in mind that it only works with Sloan Regal Flushometers. If your flushometer uses a different specification, this kit should be skipped.
Best for: Homeowners or maintenance staff replacing a worn diaphragm in a compatible Sloan Regal flushometer at 1.6 GPF.
What We Like:
- Natural rubber diaphragm supports reliable replacement performance
- Brass bypass adds a durable component to the kit
- Helps restore accurate flushing and reduce water waste
- Fits Sloan Regal Flushometers, including Clamshell #33010046
Specification
| Specification | User Benefit |
|---|---|
| Model: A-41-A | Identifies the replacement assembly for matching systems. |
| Flush rate: 1.6 GPF | Matches systems built for this flushing volume. |
| Material: natural rubber diaphragm | Provides the core replacement part in the kit. |
| Material: brass bypass | Adds a durable bypass component. |
| Compatible with: Sloan Regal Flushometers | Helps buyers confirm it suits the right flushometer family. |
| Includes: Clamshell #33010046; 3301041 and 33010046 | Supports matching by listed compatible part numbers. |
Sloan Regal 111 Manual Water Closet Flushometer, 1.6 GPF, Polished Chrome
- SLOAN FLUSHOMETERS: Sloan Flushometers are the go-to choice for architects...
- WATER CONSERVATION: Low Consumption 1.6 GPF accuracy controlled by Para-Flo...
- VACUUM BREAKER FLUSH CONNECTION: The flushometer is equipped with a vacuum...
- SUITABLE FOR COMMERCIAL APPLICATIONS: The flushometer is designed for commercial...
- SWEAT SOLDER ADAPTER: The flushometer comes with a sweat solder adapter and...
Built for busy restrooms, Sloan Regal 111 is a manual water closet flushometer that supports reliable flushing with water savings in mind. It comes in polished chrome and uses Para-Flo Technology to control flush volume for 1.6 GPF performance.
The non-hold-open metal handle keeps operation straightforward while helping conserve water. Its ADA-compliant design also supports easier use in shared spaces.
For durability, the flushometer uses high copper, low zinc brass casting that resists dezincification. That matters in settings where the fixture may see frequent use and regular maintenance.
Installation and service also get practical support from the cast wall flange, vacuum breaker, sweat solder adapter, cover tube, and control stop plug. A Bak-Chek angle stop adds precise flow control and helps maintain hygienic operation.
For the reader comparing the Regal 111 against other manual flushometers, the main appeal is its mix of water control, sturdy construction, and maintenance-friendly parts. It is a solid fit for commercial restrooms that need dependable performance, but it may be more than many residential bathrooms require.
Best for: Facilities managers needing a durable manual flushometer for high-traffic commercial restrooms.
What We Like:
- Para-Flo Technology controls flush volume for 1.6 GPF performance.
- Non-hold-open metal handle supports simple, water-conscious operation.
- High copper, low zinc brass casting helps resist dezincification.
- Bak-Chek angle stop supports precise flow control.
- Included parts help simplify installation and maintenance.
Specification
| Specification | User Benefit |
|---|---|
| 1.6 GPF | Uses less water per flush. |
| Polished chrome | Gives the fixture a clean, finished look. |
| Para-Flo Technology | Controls flush volume for efficient performance. |
| Non-hold-open metal handle | Makes operation straightforward and water-conscious. |
| ADA-compliant | Supports easier use in shared restrooms. |
| High copper, low zinc brass casting | Helps resist dezincification during heavy use. |
DeerValley Compact One Piece Dual Flush Toilet
- Space-Saving Compact Toilet: Compact toilet (24½"L×13⅜"W×28⅜"H) with...
- Water-Efficient Dual Flush Toilet System: One-piece toilet with 1.1/1.6 GPF dual...
- Easy-Clean Skirted Toilet: Fully skirted toilet design eliminates hard-to-reach...
- Quiet Soft-Close Seat: Includes a soft-close PP seat that operates at just 28dB...
- Tool-Included Quick Installation: Comes with complete installation kit...
The DeerValley Compact One Piece Dual Flush Toilet helps small-bathroom homeowners save space and water without giving up everyday comfort. Its compact one-piece design keeps the footprint tight, while the skirted shape also makes the toilet easier to wipe down.
The standard round bowl keeps the profile compact for rooms where every inch matters. If your bathroom is already crowded, that smaller shape can leave more open room around the fixture.
Flushing flexibility comes from the dual flush system, which uses 1.1 or 1.6 GPF depending on need. That can cut water use significantly over time, while still giving you two flush options for different waste loads.
Comfort features include a soft-close 28dB seat, which helps reduce noise and slamming. The included installation kit also makes setup more straightforward for a typical home project.
The toilet supports up to 250 lbs and uses easy-to-clean surfaces, so daily upkeep stays simpler. A 12-month warranty adds some reassurance after installation.
For the DeerValley Compact One Piece Dual Flush Toilet reader situation, this is a practical pick if you want a compact toilet with water-saving flush options and quieter use. Skip it if you want a roomier elongated bowl or need a higher weight rating.
Best for: Small-bathroom homeowners who want a compact toilet with water-saving flushing and quieter operation.
What We Like:
- Dual flush system helps reduce water use with two flush options.
- Compact one-piece design saves space in tighter bathrooms.
- Soft-close 28dB seat reduces noise and lid slamming.
- Easy-to-clean surfaces make routine maintenance simpler.
- Included installation kit supports a more straightforward setup.
Specification
| Specification | User Benefit |
|---|---|
| Footprint: 24½ x 13⅜ x 28⅜ inches | Fits smaller bathrooms without taking up much floor space. |
| Bowl shape: Standard round bowl | Keeps the toilet compact for tight layouts. |
| Flush volume: 1.1/1.6 GPF | Lets you use less water when a full flush is not needed. |
| Weight support: Up to 250 lbs | Provides a clear load limit for purchase decisions. |
| Seat: Soft-close 28dB seat | Cuts down on noise and prevents sudden slamming. |
| Warranty: 12-month | Adds coverage for the first year after purchase. |
HOROW T0338W One Piece Toilet with ADA Chair Height 17.3″, Dual Flush
- Compact One Piece Design: Measuring 26.6"D x 15"W x 26"H, this compact elongated...
- ADA Chair Height Comfort: Features a 17.3" seat height from floor to seat for a...
- Powerful Yet Water-Saving Flush: Built with siphon flushing and a fully-glazed...
- Installation-Friendly with Rough-In Choices: Large side access openings simplify...
- Soft-Close Seat & Reliable Support: Includes a soft-closing PP seat for quieter...
If you want an ADA-height toilet that fits a compact bathroom, the HOROW T0338W gives you a practical one-piece setup for everyday use. Its 17.3-inch chair height makes sitting and standing easier, which can matter a lot for comfort at home.
The elongated bowl adds extra room without making the toilet feel bulky. That helps when you want a little more comfort in a smaller footprint.
Cleaning is straightforward because the one-piece ceramic body has fewer seams to trap grime. The white finish keeps the look simple and easy to match with most bathrooms.
You also get dual flush operation with 1.1 or 1.6 GPF, so you can use less water for lighter flushes. The siphon system supports dependable waste removal for daily use.
It works with 10-inch or 12-inch rough-ins, which gives you some installation flexibility. The included key parts help keep setup simpler for a home project.
If you need a very light toilet for solo installation, this may not be the easiest pick.
Best for: Homeowners who want a compact, ADA-height one-piece toilet with easier sitting, simple cleaning, and dual-flush water savings.
What We Like:
- 17.3-inch chair height supports easier sitting and standing.
- Elongated bowl adds comfort in a compact layout.
- Dual flush offers 1.1 or 1.6 GPF options.
- One-piece ceramic body is easier to wipe down.
- Fits 10-inch or 12-inch rough-ins for more installation flexibility.
Specification
| Specification | User Benefit |
|---|---|
| Chair height: 17.3 in | Makes sitting down and standing up easier. |
| Bowl shape: Elongated | Adds comfort without feeling cramped. |
| Flush options: 1.1 or 1.6 GPF | Lets you use less water for lighter flushes. |
| Rough-in: 10-inch or 12-inch | Helps the toilet fit more bathroom setups. |
| Material: White ceramic | Wipes clean easily and keeps a simple look. |
| Weight: 99.2 pounds | May be harder to move and install alone. |
St. Tropez One-Piece Elongated Toilet, Glossy White
- Dual Flush: The buttons for dual flush allow you to choose between a low 1.1 gpf...
- Rough-In: 14" Rough-In
- Standard Elongated Bowl: The elongated bowl provides extra room and comfort.
- Comfort Height: Between 17-19 inches, the comfort height toilet makes standing...
- Durable Non-Porous Scratch Resistant Ceramic: Developed from ceramic, that is...
The St. Tropez One-Piece Elongated Toilet gives your bathroom a cleaner look and easier daily use. Its one-piece construction and skirted trapway create a smooth profile that hides plumbing and reduces hard-to-clean edges.
You get dual flush options with 1.1 gpf for lighter use and 1.6 gpf for a fuller flush. That flexibility helps you match water use to the task without changing how the toilet looks or feels.
The elongated bowl and comfort-height seat make sitting and standing feel more natural. For readers updating a bathroom around the St. Tropez One-Piece Elongated Toilet, those details matter when comfort and style both count.
Cleaning is simpler thanks to the fully glazed trapway and the soft-close, quick-release seat. The glazed interior helps reduce clog buildup, while the seat removes easily for faster cleanup and closes quietly.
Installation is also more approachable with the 14-inch rough-in and access holes. Still, people with standard 12-inch plumbing setups should skip it unless their rough-in matches.
Best for: Homeowners updating a bathroom who want dual-flush water savings, easier cleaning, and a modern skirted look.
What We Like:
- Dual flush options support lighter or fuller water use.
- Elongated bowl improves seating comfort.
- Comfort-height seat helps sitting and standing.
- Soft-close, quick-release seat simplifies cleaning.
- Skirted trapway creates a cleaner-looking profile.
Specification
| Specification | User Benefit |
|---|---|
| Flush options: 1.1 gpf and 1.6 gpf | Lets you choose lighter or fuller flushes. |
| Bowl shape: Elongated | Offers more comfortable seating. |
| Seat height: Comfort-height | Makes sitting and standing easier. |
| Trapway: Fully glazed | Helps reduce clog buildup. |
| Seat: Soft-close, quick-release | Closes quietly and removes easily for cleaning. |
| Rough-in: 14-inch | Fits installations made for this rough-in size. |
PROFLO Jerritt 1.6 GPF Single Flush Toilet Tank Only
- Tank only configuration - giving you the opportunity to select your matching...
- Made of vitreous china
- Toilet seat not included with this product
- Overall Depth: 6-1/4" (furthest points back to front)
- Flow Rate: 1.6 gallons-per-flush
PROFLO’s Jerritt tank gives you a durable replacement when you need a water-saving toilet tank for a compatible bowl. The vitreous china construction helps the tank resist wear and makes cleanup easier.
Its white finish fits many bathroom styles without drawing attention. The tank-only design gives you flexibility for a remodel or replacement project, as long as you already have the matching bowl.
A 1.6 GPF flush helps reduce water use while keeping everyday flushing performance practical. That makes it a useful option for homeowners who want lower consumption without changing the basic setup.
The 6-1/4-inch depth keeps the tank compact. Model PF5110M is the identifying number to check when you are matching parts.
Seat hardware is not included, and the tank will not work on its own. Skip it if you need a complete toilet, not a replacement tank.
Best for: Homeowners replacing a compatible toilet tank and wanting a water-saving option for a bowl-matched bathroom upgrade.
What We Like:
- Vitreous china resists wear and cleans up easily.
- 1.6 GPF helps reduce water use.
- Tank-only format supports replacement projects.
- White finish works with many bathroom styles.
- Compact depth keeps the profile smaller.
Specification
| Specification | User Benefit |
|---|---|
| Material: vitreous china | Offers a durable surface that is easy to clean. |
| Flush rate: 1.6 GPF | Uses less water during everyday flushing. |
| Design: tank only | Lets you pair it with a compatible bowl. |
| Depth: 6-1/4 inches | Helps keep the tank compact in the space. |
| Finish: white | Blends with many bathroom styles. |
| Model: PF5110M | Helps you match the correct replacement part. |
Zurn P6000-ECR-WS1-RK 1.6 gpf Closet Aquaflush Diaphragm Kit Rebuild Kit
- 1.6 gpf meets U.S. federal standard for water conservation
- Kit includes diaphragm repair kit, handle repair kit, vacuum breaker repair kit...
- Quiet GO BLUE dual-seal diaphragm with a clog-resistant bypass extends lifespan...
- GO BLUE parts stand up to chloramine and other chemicals, lasting 10x longer...
- For use with AquaFlush flush valves; Interchangeable with other manufacturers...
Zurn’s P6000-ECR-WS1-RK helps keep a 1.6 gpf flush system working efficiently. It gives you a rebuild option for AquaFlush flush valves and many other manufacturers’ valves, so you can handle common wear points without replacing the whole valve.
This matters when you want steady flushing and less downtime. The kit supports the federal 1.6 gpf water-saving standard, which helps maintain lower water use while keeping the system in service.
Inside, you get a diaphragm repair kit, handle repair kit, vacuum breaker repair kit, and a tailpiece O-ring. That mix lets you refresh several parts at once, which can save time during maintenance.
The Quiet GO BLUE dual-seal diaphragm is built to resist clogs, chloramine, and harsh chemicals. For the reader considering the P6000-ECR-WS1-RK, that means a repair kit that focuses on durability where flush valves often wear.
It is a practical choice if you want one kit for multiple repair needs instead of piecemeal fixes. If you only need a single small part, this may be more than you need.
Best for: Plumbers and maintenance staff who need a durable rebuild kit for 1.6 gpf flush valve repairs.
What We Like:
- Diaphragm repair kit covers a key wear point
- Handle repair kit supports smoother maintenance
- Vacuum breaker repair kit adds more complete service coverage
- Quiet GO BLUE diaphragm resists clogs and harsh chemicals
- Supports 1.6 gpf water-saving flush systems
Specification
| Specification | User Benefit |
|---|---|
| Product: P6000-ECR-WS1-RK | Identifies the rebuild kit for easy ordering and replacement. |
| Flush system: 1.6 gpf | Helps maintain a water-saving flush setup. |
| Compatibility: AquaFlush flush valves | Fits a known valve type used for repairs. |
| Compatibility: many other manufacturers’ valves | Offers broader use across different flush valve systems. |
| Included parts: diaphragm repair kit, handle repair kit, vacuum breaker repair kit, tailpiece O-ring | Lets you service several common wear points at once. |
| Feature: Quiet GO BLUE dual-seal diaphragm | Helps resist clogs, chloramine, and harsh chemicals. |
Gerber Maxwell Crest Round Two-Piece Toilet, Soft-Close Seat, White
- MODERN TWO-PIECE TOILET: Versatile Gerber toilet complements any decor, making...
- POWER FLUSH TOILET: 1.28 gpf high-efficiency toilet delivers a strong...
- SOFT CLOSE TOILET SEAT INCLUDED: Round slow close toilet seat gently lowers to...
- RELIABLE & EFFICIENT FLUSH SYSTEM: Fluidmaster 400A fill and 3" flush valves...
- NO CLOG TOILET: Smooth glazed trapway keeps waste flowing with each flush for a...
Gerber Maxwell Crest is a round, two-piece toilet for everyday home use when you want quiet flushing and simple upkeep. Its white vitreous china finish keeps the look clean and familiar in primary or guest baths.
The 1.28 GPF flush helps move waste efficiently while using less water than older high-use models. A glazed trapway supports smoother passage through the bowl, which can help reduce clogging during routine use.
It also includes a Fluidmaster 400A fill valve and three flush valves, which work together to keep refills quiet and flush performance steady. That matters when the bathroom sits near bedrooms or a busy hall.
The soft-close seat avoids slamming, and the ReadySet kit makes installation more straightforward. You also get ADA-friendly comfort and solid durability for day-to-day use.
As a round, two-piece toilet, it takes up a familiar footprint and fits a straightforward bath layout. The simple white finish keeps the look neutral, but it may not suit someone who wants a more decorative style.
Best for: Homeowners who want a quiet, low-maintenance round toilet with a soft-close seat for primary or guest bathrooms.
What We Like:
- 1.28 GPF flush supports efficient water use.
- Glazed trapway helps the bowl clear more smoothly.
- Soft-close seat reduces slamming noise.
- ReadySet kit simplifies installation.
- ADA-friendly comfort suits everyday bathroom use.
Specification
| Specification | User Benefit |
|---|---|
| Type: Round, two-piece toilet | Fits a familiar layout and installation style. |
| Material: Vitreous china | Offers a durable surface for everyday bathroom use. |
| Finish: White | Keeps the toilet looking clean and neutral. |
| Flush: 1.28 GPF | Uses less water while handling routine flushing. |
| Trapway: Glazed trapway | Helps waste move through the bowl more smoothly. |
| Fill valve: Fluidmaster 400A | Supports quiet refills after flushing. |
Cimarron 1.6 gpf toilet tank
- 1.6 gpf (6.0 lpf)
- Left-hand Polished Chrome trip lever
- Combines with the K-31588 or K-31589 bowl to create a complete K-31620 or...
- AquaPiston canister optimizes the flow out of the tank, harnessing gravity and...
- Easy-to-flush canister design requires less force to actuate than a 3-in (76 mm...
Kohler’s Cimarron 1.6 gpf toilet tank gives you a reliable way to build a high-efficiency toilet setup. It comes as model 31614-0 in white, and it pairs with K-31588 or K-31589 bowls to form a complete K-31620 or K-31640 Cimarron toilet.
The AquaPiston canister helps create a strong flush using 1.6 gallons per flush. It uses less force than a standard flapper, which matters if you want efficient flushing without extra complexity.
A left-hand polished chrome trip lever gives the tank a smooth, finished look and an easy feel in use. The canister also has reduced exposed seal material, which helps resist wear, shrinkage, and swelling over time.
For a homeowner or remodeler updating a Cimarron bathroom, this tank fits a specific build path. You can combine it with the listed bowls to complete the toilet without guessing at compatibility.
It is a tank only, so you still need the matching bowl and other parts for a full setup. If your project does not use the compatible Cimarron bowls, this is not the right tank.
Best for: Homeowners or remodelers who want a compatible, high-efficiency Kohler tank for a Cimarron toilet build.
What We Like:
- AquaPiston canister supports a strong 1.6 gpf flush.
- Reduced exposed seal material may help resist wear.
- Left-hand polished chrome trip lever adds a clean finish.
- Compatible with K-31588 and K-31589 bowls.
- Tank-only format suits planned toilet builds.
Specification
| Specification | User Benefit |
|---|---|
| Model: 31614-0 | Helps identify the exact tank for matching parts. |
| Finish: White | Matches a clean, standard bathroom look. |
| Flush volume: 1.6 gpf | Uses less water per flush. |
| Flush mechanism: AquaPiston canister | Supports strong flushing with less force than a flapper. |
| Trip lever: Left-hand polished chrome | Provides a smooth, finished control point. |
| Compatible bowls: K-31588 or K-31589 | Lets you build a complete K-31620 or K-31640 toilet. |
Factors to Consider When Choosing 1.6 Gpf Toilet

When you choose a 1.6 GPF toilet, focus first on flush performance, bowl shape, and the right installation rough-in so it fits your space and handles waste efficiently. These features affect how well the toilet works in daily use.
Also check the height and comfort level, since the right seat height can make daily use easier. Pick a design that is easy to clean so maintenance takes less time.
Flush Performance
Flush performance should be a top priority for a 1.6 GPF toilet. It needs to clear waste fully each time while still using less water.
Look for a strong flush system, like siphon jets or dual nozzles. They push water with more force and help with waste removal.
Rimless or bowl rim designs can move water more efficiently, so the flush stays strong and steady. Check that your water pressure reaches at least 8 psi, since low pressure can hurt performance.
Advanced options, such as centrifugal swirling or optimized canister designs, can improve reliability and cut down on clogs, double flushing, and frustration over time.
Bowl Shape
An elongated bowl gives you more seating space and usually feels more comfortable, especially for longer use. It also often supports better accessibility, which matters if you need an ADA-friendly option.
A round bowl saves space and fits tighter bathrooms more easily. For cleaning, look for enough room around the toilet so you can reach those areas without strain. Elongated bowls often have a larger water surface area, which can help with flushing and waste removal.
Installation Rough-In
Measure the rough-in before you buy a 1.6 GPF toilet so it fits your bathroom plumbing. Most toilets use a 12-inch rough-in, but some need 10 or 14 inches.
Measure from the wall behind the toilet to the center of the drainpipe. If that number does not match the manufacturer’s specified rough-in, you could end up with gaps, leaks, or extra plumbing work. Confirm the dimension in the product specs and compare it with your bathroom’s plumbing infrastructure. That helps keep installation stable and smooth.
Height And Comfort
A taller toilet can make daily use easier, especially if you have mobility concerns. Comfort height models sit closer to a chair, often around 17 to 19 inches, so you can sit down and stand up with less strain on your knees and hips.
Seat height changes how natural the toilet feels. An elongated bowl gives you more room and usually feels better if you’re taller or have a larger frame. Look for a height that eases pressure on your lower back and legs, and avoid a seat that feels too low for comfortable use.
Cleaning Ease
A smooth, glazed trapway keeps waste from clinging, so you scrub less often. That helps most in heavy daily use, where small cleaning tasks add up fast.
Rimless flushing systems also help by removing hard-to-reach edges where grime collects. Fewer seams, crevices, and decorative details mean flat, simple surfaces that wipe down faster.
Rounded or gently sloped bowls make it easier to clean the inner curve. A soft-close seat with quick-release hinges lets you lift the seat off easily, so you can clean around the base and bowl without hassle.
Frequently Asked Questions
How Much Water Does a 1.6 GPF Toilet Save Annually?
A 1.6 GPF toilet does save water compared with older 3.5 GPF models. How much you save each year depends on how often you flush. If you flush five times a day, you’d use about 2,920 gallons a year, versus 6,388 gallons with a 3.5 GPF toilet, saving about 3,468 gallons yearly. Flush less often, and you’ll save less; flush more, and you’ll save more.
Are 1.6 GPF Toilets Compatible With Older Plumbing Systems?
Yes, you can usually use a 1.6 GPF toilet with older plumbing systems if the drains and venting are in good shape. You’ll want enough pipe slope, clear lines, and decent water pressure to reduce clogs or weak flushing.
If your home has very old, narrow, or damaged pipes, an inspection first is a good idea. A plumber can tell you whether your system will handle it reliably.
Do 1.6 GPF Toilets Clog More Often Than Lower-Flow Models?
No, not necessarily. Clogs usually show up when the design is weak or too much paper is used. A larger trapway, strong flush performance, and a glazed bowl can help reduce problems.
Lower-flow models can save water, but some clog more if the flush is weak. Installation quality, drain condition, and daily habits matter just as much as gallons per flush.
Which 1.6 GPF Toilets Are Best for Small Bathrooms?
You’ll want compact 1.6 GPF toilets with a round bowl, short projection, and a wall-hugging tank. Models like TOTO Drake, Kohler Santa Rosa, and American Standard Cadet 3 Compact fit that need well. They save space, flush well, and work in tighter layouts. Measure your rough-in, too, because a 10-inch or 12-inch setup changes what will fit in your bathroom.
How Often Should 1.6 GPF Toilet Parts Be Replaced?
You should replace 1.6 GPF toilet parts when they wear out, not on a fixed schedule. Flappers often last 3 to 5 years, fill valves 5 to 7 years, and supply lines about 10 years. If you hear running water, see leaks, or need to flush twice, replace the part sooner. Regular cleaning and gentle use can help parts last longer and reduce surprise repairs.
Conclusion
A 1.6 gpf toilet roundup should help you narrow down a model that fits your bathroom and daily routine. The right purchase comes down to fit, flushing power, and how much maintenance you can live with.
If your space is tight, focus on the model that matches the room best. If you want a steady workhorse, go with one that balances comfort and efficiency for everyday use.
Settle on the toilet that fits your home, and the choice gets easier.