Specs are compiled from manufacturer listings and verified buyer reviews and can change over time — please confirm the key details on the product page before buying.
If you are tired of leaning down to a low bowl, babysitting a weak flush, or trying to guess whether a new toilet will fit the pipe already in your floor, this is the shortlist that solves those exact problems. Every pick here is a two-piece toilet — a separate tank that bolts onto a separate bowl, the design that stays easier to service and easier to haul into a bathroom than a one-piece. What separates the good ones from the frustrating ones depends on three things: the rough-in (the distance from the finished back wall to the center of your floor drain, which decides whether the toilet fits at all), the seat height, and how much water one flush moves.
I’m Mohammad Maruf — the founder and writer behind KitchPrep. This guide is built by comparing the manufacturers’ published specifications and the patterns across verified customer reviews, so you get each pick’s real strengths and trade-offs instead of marketing spin.
Below you will find the flush ratings, the rough-in numbers, the weights, and the real seat-height measurements, plus the everyday details that decide whether a toilet feels right after a month. If you are replacing an old fixture and want a 2-Piece Toilet that fits on the first try, the measurements here do the deciding for you.
Our Picks at a Glance
How To Choose The Best 2-Piece Toilet
Ordering any toilet without measuring first is how people end up with a box they cannot install. Five minutes with a tape measure before you order prevents almost every return, and it starts with the drain pipe already in your floor.
Measure Your Rough-In Before Anything Else
Your rough-in is the distance from the finished wall behind the toilet to the center of the floor drain, and most homes land at 12 inches, which is why so many of the picks here are built to that number. If your tape says 10 or 14, you need a toilet built for that spacing — the fixture cannot be stretched to fit. This single measurement matters more than color, brand, or finish.
Decide Between Standard And Chair Height
A standard-height bowl sits around 15 inches from the floor to the rim, while a chair-height bowl — also called comfort height — sits noticeably taller and is the reason most buyers upgrading from an old fixture notice the change immediately. Taller seating is easier on the knees when you sit and stand, which is why so many picks here list an ADA-compliant height. The trade-off is real for shorter users, whose feet may not reach the floor on a very tall bowl.
Understand GPF And MAP Before You Compare Flushes
GPF is gallons per flush — the water each press uses — and 1.28 GPF is the modern water-saving standard, while older toilets commonly ran 1.6 GPF. MAP is the Maximum Performance score, a measured grams-of-waste figure where 1000 grams is the top result, so a MAP rating tells you how much one flush can move regardless of how little water it uses. A wide flush valve and a larger, fully glazed trapway (the internal channel the waste travels through) work together with those numbers to keep clogs away.
Quick Comparison
| Model | Best For | Bowl Height | Flush / Water Use | Weight | Amazon |
|---|---|---|---|---|---|
| ELLAI Two Piece Elongated★ Best Overall | Small baths and remodeled dark bathrooms | 17.24 in | Single flush, 1.28 GPF | 77 lb | Amazon |
| DeerValley DV-2F52531Best for Small Baths | Tight apartment bathrooms | 17 13/16 in | Single flush, 1.28 GPF | 90 lb | Amazon |
| Los Flexi TKLFX22-ATop Performer | Tall users and accessible bathrooms | 17.9 in | Siphon flush, 1.28 GPF | 82 lb | Amazon |
| HOROW HR-E17S | Seniors wanting a quiet close | Comfort height, ADA | Single flush, 1.28 GPF | — | Amazon |
| American Standard Colony 3 | Budget upgrades and guest bathrooms | 16 ½ in | Single flush, 1.28 gpf | 80 lb | Amazon |
| Gerber Maxwell Crest | Primary bathrooms and clean looks | Chair height | Power flush, 1.28 gpf | 79.4 lb | Amazon |
| Gerber Viper Force | Whole-house matching and quick cleaning | Chair height | Power flush, 1.28 gpf | 78.2 lb | Amazon |
| TOTO Drake CST744S#01 | Long-term reliability and quiet flushes | Standard height | G-Max flush, 1.6 GPF | — | Amazon |
| TOTO Drake CST776CSG#01 | Less scrubbing between cleans | Standard height | Tornado Flush, 1.6 GPF | — | Amazon |
| Kohler Highline K-3999-0 | Familiar brand with chair height | Comfort height | Class Five, 1.28 gpf | 93 lb | Amazon |
In‑Depth Reviews
1. ELLAI Two Piece Elongated Toilet, 17.24″ Comfort Height, Glossy Black
Our pick — 4.5★ from 150+ verified ratings; the strongest balance of quality and price.
A glossy black charmer that arrives with the seat already bolted on and the valve already seated.
If your remodeled bathroom deserves a fixture that does not look like every white toilet on the block, this is the pick that carries the room. The glossy black finish is what buyers talk about more than anything else — the color is the reason people choose it, and 39 separate reviews single out how it looks. The elongated bowl (an oval-front shape that gives you more sitting room than a round one) stretches to 17.24 inches from floor to seat, an ADA-compliant chair height that takes the effort out of standing up.
What quietly wins people over is how complete the box is. The seat, the flush valve, the wax ring (the seal that joins the toilet base to the floor drain), and the floor bolts all come included, and installation is the second-most talked-about thing in the reviews, with 17 buyers raising it. Buyers report the job went smoothly with no plumbing experience and that the pre-installed tank parts saved them time. The flush itself uses 1.28 GPF (gallons per flush) through a fully glazed 2-inch trapway and a 3-inch flush valve, and it scores a MAP of 1000 grams — the top performance figure — while using at least 20 percent less water than an older 1.6 GPF toilet.
The catch is sizing, and it is worth saying plainly. One buyer admits they never measured before ordering and the toilet barely fit, so check your rough-in (the wall-to-drain distance) against the 12-inch spec before you commit. ELLAI’s warranty runs two years against defects, with one year on the flushing mechanism and seat lid. Weighing 77 pounds, it is also the lightest pick in this lineup — 13 pounds lighter than the 90-pound DeerValley, which matters on install day when you are carrying it up a flight of stairs.
What Buyers Rave About
- Appearance is the runaway favorite — the glossy black finish is the single most-praised quality of this toilet across its reviews.
- Ships with everything: seat, flush valve, wax ring, and floor bolts, so you are not chasing parts on install day.
- MAP 1000-gram flush score with a 3-inch flush valve and 2-inch glazed trapway clears waste on 1.28 GPF.
What To Keep In Mind
- Measure your rough-in first — this is built for 12-inch installations, and a buyer who skipped the tape measure found it barely fit.
- A few owners mention the toilet feels light for the price, and one swapped out the included seat for a black wooden one.
- The plastic seat is basic; if you want a wood or soft-close upgrade, budget for a separate seat.
Grab this one: your bathroom is being remodeled and you want a statement piece that ships with every install part included.
Wait for a white finish: you want the classic look or you are buying for a rental where a bold color might not travel.
2. DeerValley Two-Piece Toilet, ADA Comfort Height, 12″ Rough-In, White
The tight-space specialist that still gives you a full chair-height seat.
The first thing you learn about this DeerValley is that it hides in plain sight — the compact footprint is the reason people buy it, and 22 reviews bring up how well it suits a squeeze. It measures 27.56 inches deep by 16.14 inches wide by 30.91 inches tall, so it slips into the narrow gap left by an old round-bowl toilet. The tank is 16.25 inches wide, which is worth knowing if you are measuring a tight alcove. Sitting 17 13/16 inches from floor to seat, it counts as ADA-compliant chair height, so you get the comfort boost without a bulky profile.
Build quality is the runaway favorite here — it is the single most-praised trait this toilet has, and the list of owners happy with it is long. It comes in Solid White with a U-shaped elongated seat made of polypropylene (a durable, stain-resistant plastic), and the bowl is fired at high temperature to lower its water absorption, which helps the glazed surface resist cracking. The quiet-close seat is a real benefit at 2 a.m.: it lowers without the slam that wakes the house. Flushing runs on a 360-degree jet system inside the bowl that spirals water around the rim to scrub hard-to-reach spots on each press.
The honest trade-off is weight and the seat. At 90 pounds, it is 13 pounds heavier than the 77-pound ELLAI — manageable, but not a one-person job if you are carrying it upstairs. Stability of the seat is the one recurring complaint, so if yours slides or loosens over time, a replacement seat solves it. DeerValley covers this toilet with a one-year limited warranty on the fixture, the flushing mechanism, and the soft-closing seat lid.
Where it earns its keep: If your bathroom barely fits a toilet, this is the shape that does the job — 27.56 inches deep and 16.14 inches wide means it tucks into spaces a full-size model will not touch. Installation is the second-most-discussed trait, with buyers noting it arrives intact and includes everything except a water supply hose.
Where it stumbles: The seat is the weak link — a handful of buyers find it lightweight and a few have had to retighten it.
Reach for this if: space is your enemy and you want a chair-height seat that actually fits the alcove you have.
Look elsewhere if: you need the fuller, wider stance of a standard-size bowl, or you want a metal-handled trip lever instead of plastic.
3. Los Flexi 17 Inch Two-Piece Toilet, 17.9″ Tall, Soft-Close, 12″ Rough-In
The tallest seat in the lineup at 17.9 inches — built for knees that want less bending.
If you have been propping a seat riser on top of an old toilet just to stand up comfortably, this is the fixture that retires the riser. At 17.9 inches from floor to seat, it is the tallest pick in this list, a full 0.66 inches higher than the 17.24-inch ELLAI. Height is the runaway winner in the reviews — 16 owners bring up how much easier it is to sit and stand, and the elongated oval bowl gives you a longer, roomier seat area. Los Flexi rates it ADA-compliant and it is designed with seniors, taller users, and anyone with limited mobility in mind.
Owners mention the install is quick and clear, its the second-most-discussed trait at 12 reviews, and the 360-degree siphon flush (water that pulls waste down and around the bowl) empties the bowl on one press. One buyer put it in alone in about an hour and a half. A soft-close seat (one that lowers gently without a bang) comes included, and the whole thing ships with the bowl, tank, seat, and installation kit. Weighing 82 pounds, it is a reasonable middle ground between the 77-pound ELLAI and the 90-pound DeerValley.
Two things deserve honest mention. The trip lever (the handle you press to flush) is plastic, and one buyer found theirs broke during install and swapped it for a metal handle — a cheap fix that Los Flexi will also replace for you. And installation instructions assume some basic plumbing familiarity; a number of owners managed it solo, but if DIY gives you pause, budget for a plumber. The warranty is one of the better ones at two years, which covers you if either concern turns into a real problem.
The Standout Wins
- Highest seat in the lineup at 17.9 inches — the pick to grab if getting up from a low bowl is the problem you need solved.
- Soft-close seat, elongated bowl, and the complete install kit are all included from the start.
- Two-year warranty — double what most picks here offer.
The Trade-Offs
- The plastic trip lever is the weak point; a metal replacement is inexpensive and straightforward.
- Short-statured users should measure before buying — a very tall seat is a benefit for some and a stretch for others.
- Installation instructions are a bit thin, so a plumber is worth pricing if you are not handy.
The answer if: knee-friendly height is the whole reason you are shopping, and you want a bowl tall enough to stand up from with no riser.
Rethink it if: you are on the shorter side, or you want a stainless-handle feel without buying the handle separately.
4. HOROW 17 Inch High Elongated Toilet, ADA Chair Height, 1.28 GPF
A mid-price chair-height toilet with a top-score flush and a seat that shuts like a whisper.
This HOROW is what a sensible replacement looks like when you want the comfort-height feel without paying the boutique-brand premium. It sits at ADA-compliant chair height with an elongated bowl, and the whole point of that height is stated plainly in the reviews: it lets you sit and stand without leaning hard on your knees. A buyer who is elderly and finds bending over difficult calls it the perfect toilet for them. The soft-close seat is reinforced for durability and closes without a clang, which is why so many owners mention the quiet.
Where the value really shows up is the flushing. The 360-degree siphon system clears a full load on a 1.28 GPF press and scores a MAP 1000g rating — the same top score the more expensive ELLAI carries. Build quality is the most-praised trait here, with 18 reviews and the quality of the materials getting the second-most mentions. Compared with the plain plastic seats you see on budget toilets, this one is described as soft and comfortable in use.
Two things to weigh. Height is a divider on this toilet — some love it and some struggle to hop up comfortably if they are short. Size is the other mixed note; a buyer describes it as “just right” rather than spacious, so if you have a wide user set, measure against a larger bowl. The warranty is a one-year limited with lifetime after-sales service, but that limited coverage is shorter than the two years Los Flexi offers. A 12-inch rough-in fits most homes, and the kit includes the wax ring, T-bolts, and seat cap.
The value read: The flush is where HOROW punches above its tier — a MAP 1000g rating with 1.28 GPF water savings, meaning it clears waste on one press while using less water than the older 1.6 GPF toilet you are likely replacing.
The honest caveat: Comfort height is not universally comfortable. Buyers at the short end are on the fence about the bowl height, so if you are under about 5’2″ and want the tallest possible seat, the 17.9-inch Los Flexi is a closer match than this HOROW’s 17-inch bowl.
Pick this up if: you want a reliable mid-tier chair-height toilet with a top-score flush and a quiet close without paying premium-brand money.
Look elsewhere if: you need the extra-tall 17.9-inch option or a longer warranty than the one-year limited HOROW provides.
5. American Standard Colony 3 Two-Piece Toilet, Chair Height, 1.28 gpf
A recognizable name at a lower price — clean design, low water use, no seat in the box.
This Colony 3 is a solid pick for a guest bathroom, a rental, or a second-bath upgrade where you want the American Standard label without the price of a higher-tier fixture. It uses 1.28 gpf / 4.8 Lpf (gallons and liters per flush) and meets WaterSense criteria, the EPA program that flags toilets engineered to save water without sacrificing performance. The chair-height bowl sits 16 ½ inches from the floor to the bowl rim, which the company positions as comfortable, easy access.
The flush works through a 3-inch flush valve and a fully glazed 2-inch trapway (the channel the waste travels through, glazed so it does not snag). American Standard’s PowerWash rim sends a rush of water around the bowl edge on every flush to help scrub the sides as you go. Trips levers and color-matched bolt caps are included, and the fixture is built from vitreous china — the glass-like fired ceramic most quality toilets use. Weighing 80 pounds, it is comfortable for a two-person carry.
Spend thirty seconds on what is not in the box before you order: no seat. American Standard sells the front-of-bowl seat separately, which is why a couple of customers note it should be clearer on the listing. A buyer also points out the bowl is smaller than a typical elongated, which is fine for kids and guests but cramped for a 6’2″ heavier-set user. Separately, one unit arrived with a chip on the bottom — a shipping issue, not a build flaw, and the return went through quickly. If you have a compact rough-in and just want a water-saving toilet from a name you know, this one works — but factor in the seat.
Best for: a guest or secondary bathroom where you want a familiar brand, WaterSense efficiency, and a tidy chair-height bowl.
Buy the seat separately: no seat comes in the box, and the bowl runs small — shorter users will find it fine, taller buyers may want a bigger elongated option.
6. Gerber Maxwell Crest Elongated Two-Piece Toilet, Soft-Close Seat, White
Understated looks backed by a name that has been making toilets for decades.
Gerber is a quieter name than the big-box brands, which makes it a pleasant surprise for buyers who want a toilet that just looks clean and modern without a logo check. The Maxwell Crest is a chair-height elongated two-piece with a soft-close seat included, so you can sit at a comfortable height and close the lid without a bang. It comes in white, sits on a 12-inch rough-in, and ships with the bowl, tank, hardware, seat, and wax ring — the whole kit is in the box.
Under the lid, it runs on a Fluidmaster 400A fill valve and 3-inch flush valves, the parts that refill the tank quietly and reset quickly for the next flush. The trapway is fully glazed to keep waste sliding through instead of snagging, and Gerber labels it a “no clog toilet” built for everyday use. At 1.28 gpf it is water-efficient, and this is the same target flush volume you will find in most modern fixtures. Build quality is what owners rave about most, with performance close behind — the consensus is that this feels like a solidly-made toilet, not a bargain-bin one.
The one thing that slips through the cracks is the supply line. A buyer notes the box includes the wax ring, the ReadySet kit, and a standard flange kit — but the braided waterline is not part of the bundle, so plan on grabbing one at the hardware store if you do not already have one. The setup is straightforward for a DIYer with clear instructions, and a couple of buyers swapped the chrome handle for a brushed-nickel one to match their decor. Weighing 79.4 pounds, it is easy enough to wrangle with a helper.
Why owners stick with it: The Fluidmaster 400A fill valve and 3-inch flush valves are the unglamorous parts that make a toilet last — they refill quietly and reset fast. Combined with the glazed trapway, the result is a toilet that clears the bowl without drama, on 1.28 gpf.
One thing to know: The supply line is not in the box, so add one to your order if you do not have a spare. Otherwise the package is complete, down to the wax ring and T-bolts.
For you if: you want a solidly-built, clean-look chair-height toilet from a maker known for the parts inside rather than a flashy finish.
skip it if: you need the fixture to ship with the supply line, or you want an extra-tall 17-inch-plus bowl instead of the standard chair height.
7. Gerber Viper Force Elongated Two-Piece Toilet, Soft-Close Seat, White
The seat lifts off in seconds — a small detail that changes how you clean a bathroom forever.
The Viper Force is the sibling to the Maxwell Crest above, but the standout here is the cleaning convenience. Its ReadySet soft-close seat installs with no tools and lifts completely off the bowl when you are ready to scrub down the sides — no fumbling with bolt caps or a screwdriver at the back of the tank. For anyone who has ever tried to wipe around a fixed seat hinge, that is a genuinely useful upgrade.
Under the hood, it runs the same reliable Gerber combo as its sibling — Fluidmaster 400A fill valve and 3-inch flush valves — on 1.28 gpf water-efficient flushes, through a fully glazed trapway designed to sweep waste through without a snag. Build quality is the most-praised trait, with flush performance and installation right behind it. Owners consistently say it flushes well, installs without drama, and looks cleaner and more modern than the old toilet it replaced. The chair-height elongated bowl at 31.75 inches overall height sits comfortably and makes sitting and rising easier for older users.
The size is the main thing to note: 29.5 inches deep by 16.5 inches wide by 31.75 inches tall makes it a bit longer than the Maxwell Crest, so measure the space in front of the toilet before you order. A recurring minor gripe is that the bowl is not always clean after a single flush — waste sometimes clings and needs a second press — which is worth knowing if you prefer to flush once and walk away. The one-year limited warranty matches its sibling, and the box includes the wax ring, hardware, and the ReadySet seat you can pop off for cleaning.
The differentiator: That pop-off ReadySet seat is the reason to pick this over the Maxwell Crest. Same flush system, same build quality, but you get a seat that comes off in seconds when you want to scrub the bowl.
The honest note: Waste can stick to the bowl after a single flush on occasion — not a defect, just a quirk of the shape. Owners who care about the bowl staying spotless tend to press twice, and if you hate a double flush, this is a skip.
Pick this over the Maxwell Crest if: cleaning convenience is what matters most and you want a seat you can lift off in one motion.
Look at the Maxwell Crest instead if: you are tight on space and want a slightly shorter overall footprint, or you hate double-flushing.
8. TOTO Drake Elongated Two-Piece Toilet, Cotton White – CST744S#01
The workhorse your plumber already knows — a wide 3-inch valve that clears the bowl fast.
If you want a toilet that will still be flushing reliably a decade from now, TOTO Drake is the fixture your plumber probably has in their own house. It runs on TOTO’s G-Max flushing system, a quiet and powerful commercial-grade mechanism, driven by a wide 3-inch flush valve that the company says is 125 percent larger than conventional 2-inch valves — more opening means a faster dump of water and less chance of a clog. The fully glazed 2-1/8-inch trapway completes the path, computer-designed to keep waste moving.
Quality is the single biggest theme in the reviews for a reason — it dominates the noise, and functionality and flush performance follow right behind it. It sits at standard 15-inch height for those who prefer not to sit as high as chair-height toilets — a real benefit if the taller seating feels unnatural. Its elongated bowl gives you more sitting room, and the tank and bowl ship as a pair with the hardware and instructions included. The only parts you supply: a wax ring, flange bolts, water supply line, and — note this — a seat, which is not in the box.
Honest answer to the “is it worth the price” question: yes, especially if you value simple servicing. The fill valve and flapper are standard, inexpensive parts you can swap yourself, and the reviews suggest you rarely have to. Watch for a lazy flush and swap the flapper early — this toilet earns its keep for years. At 1.6 GPF, it uses slightly more water per flush than the 1.28 GPF picks above, but reviewers point out it almost never needs a second press.
Why This Is the Legend
- Quality is the runaway winner in the reviews, with functionality and flush performance right behind — a decade-plus reputation built on reliability.
- Wide 3-inch flush valve and 2-1/8-inch glazed trapway move water fast and rare-clog.
- Standard 15-inch height for buyers who want the traditional seated position rather than comfort height.
What To Plan For
- Seat is not included — you will need to buy one separately, and it should be an elongated style to match the bowl.
- Standard height means no comfort-height benefit for older users or anyone who wants an easier rise.
- Flush valve parts are serviceable but you may eventually need to swap them — keep an eye on any change in flush sound.
Get this if: you want the most reliable flush for the money, a standard-height seat, and a toilet you can service yourself for years.
Keep looking if: you need a seat in the box, or you specifically want chair-height seating for easier sit-and-stand.
9. TOTO Drake Two-Piece Elongated 1.6 GPF TORNADO FLUSH with CEFIONTECT
The bowl that cleans itself a little — a slick glaze and a swirl flush mean less scrubbing.
The big idea behind this Drake is that you scrub it less often. It combines two TOTO technologies: Tornado Flush, which swirls water in a circular pattern to wash the whole bowl surface, and CEFIONTECT, an ultra-smooth glaze that makes waste struggle to stick in the first place. Cleaning performance is among the most-praised traits in the reviews, with buyers reporting this Drake can clear a lot without needing a second press — 45 reviews call out the cleaning, and the flush power gets 72 mentions.
It sits at standard height rather than TOTO’s taller Universal Height, which is a specific feature for buyers who prefer not to sit as high — a buyer at 5’5″ notes it is a comfortable height and their feet rest flat. The 1.6 gallon per flush Drake runs a wide 3-inch flush valve and a siphon jet bowl (the small jet of water at the back of the bowl that pushes waste through the trapway), engineered to get the job done on a single flush. It fits into a 12-inch rough-in and features a left-hand trip lever in a stylish, modern profile. Note the parts list: the wax ring, flange bolts, water supply lines, and a seat all sell separately.
The honest weak spot on this one is the flapper valve inside the tank. A buyer reports that the powerful flush tears the flapper after just a few flushes, and that replacement parts can be hard to find locally — a straightforward DIY fix once you track one down, but worth knowing. Another buyer noted the flush itself is louder than some, which bothers light sleepers more than day users. Beyond that, the CEFIONTECT glaze makes a real difference: owners say the bowl stays clean for months without the standard weekly scrub, and the compact elongated shape leaves room in tight baths.
Where it wins: Tornado Flush and CEFIONTECT attack cleaning from both sides — swirl away what is there, and glaze away what tries to stick. Buyers consistently report the bowl stays cleaner for longer, and the 1.6 GPF siphon flush clears in one press.
Where it needs attention: The tank flapper is the one part to watch — the flush force can wear it down over time, so plan for a replacement somewhere down the line, and note that the bowl runs a standard height rather than TOTO’s taller option.
The one for you: you are tired of scrubbing the bowl and want a flush with a slick coating that pushes waste away, at a standard seat height.
Look past this if: you want a comfort-height seat, or you would rather not deal with a flapper valve that may need replacing sooner than a standard design.
10. Kohler Highline Comfort Height Two-Piece Elongated Toilet, 1.28 GPF
The premium chair-height workhorse — big name, big weight, sturdy design.
Kohler is the brand most buyers recognize, and the Highline is the model that fills a lot of remodeled bathrooms. It offers chair-height seating, so you sit taller than a standard bowl and stand up without leaning, combined with a classic elongated front that gives you more room. The Class Five flushing technology handles the flush on 1.28 gpf water use, and the fixture ships with a color-matched left-hand polished chrome trip lever. Quality and reliability are the two most-praised traits in the reviews — it is the pick for buyers who want the name they trust.
Two things stand out for install day. Second, the seat is not in the box, so add the elongated seat of your choice to the order. The three-bolt tank mount is designed to keep the tank from rocking, which owners mention — a 5’0″ buyer notes the height is perfect even at her size and the install was straightforward once someone helped carry the box in. A 16-inch supply line is the recommended length here, since the stock 12-inch one is too short for most installs.
The honest concern is durability in shipping. Bowl cracks show up in some arrivals, and one unit arrived with a hairline crack that caused a slow drip the plumber traced back to the fixture. Kohler authorizes a two-piece warranty replacement when that happens, and the process went smoothly for most owners — but plan to inspect the bowl on arrival before you install or schedule the plumber. When it arrives intact, shoppers say the flush is quick and efficient on 1.28 gpf, the height is a genuine comfort improvement, and the bowl stays put without wobble.
Why People Choose Kohler
- Class Five flushing on 1.28 gpf is the most reliable name-brand combo for predictable water use.
- Comfort-height seating and elongated bowl give the same easy-in, easy-out benefit tall buyers expect.
- Quality and reliability are the two most-praised traits, backed by Kohler’s one-year limited warranty.
What To Plan For
- Inspect the bowl when it arrives — a few units have shipped with cracks, though Kohler replaces them.
- At 93 pounds, it is the heaviest pick here — plan for a helper on install day.
- The seat is not included; budget for an elongated seat and a 16-inch supply line.
Pick it up if: you want a chair-height toilet from a brand you know, with the flush and sturdiness to match.
Rethink it if: you cannot handle the 93-pound lift or you want the seat and supply line bundled in the box.
Understanding the Specs
GPF and Water Efficiency
GPF stands for gallons per flush, the measure of how much water each press uses. 1.28 GPF is the current water-saving standard — that number appears on most toilets here — while 1.6 GPF uses more water per press. WaterSense is the EPA program that flags toilets engineered to save water without sacrificing performance, and many of the picks here qualify. Lower GPF does not always mean weaker flush; the shape of the bowl and the size of the flush valve matter just as much as the water volume.
ADA Height and Comfort Height
ADA height (short for the Americanswith Disabilities Act, the standard that sets accessible seating heights) means the seat sits higher than a traditional bowl, usually starting around 16 ½ inches from the floor to the rim and topping out above 17 inches. Higher seating makes sitting down and standing up easier and puts less strain on knees and hips. The trade-off is that shorter users whose feet do not reach the floor on a taller bowl can find the same height uncomfortable, so it is a pick worth matching to the person, not the room.
Rough-In
Rough-in is the distance from the finished wall behind the toilet to the center of the floor drain. Most homes and most toilets on this list use a 12-inch rough-in, so ordering a 12-inch model is a safe bet. If your tape measure reads 10 or 14, you need a toilet built for that spacing — the fixture cannot be stretched or squeezed to fit another rough-in.
MAP Score and Trapway
MAP is the Maximum Performance score, a measured figure in grams that shows how much waste a single flush can clear. 1000 grams is the top score, and toilets that hit it are considered water-efficient even at low GPF. The trapway is the internal channel the waste travels through; a wider, fully glazed trapway (coated so waste slides instead of catching) is one of the biggest reasons a toilet resists clogs.
FAQ
How do I know if a toilet will fit my bathroom before I order?
Is 1.28 GPF enough water to actually clear the bowl?
What is the difference between chair height and standard height?
Will a two-piece toilet last as long as a one-piece?
Do I need to buy a seat separately?
What does the wax ring do and is it included?
How long does installation take for a two-piece toilet?
Is an elongated bowl better than a round bowl?
Should I worry about shipping damage on a toilet this heavy?
Final Thoughts: The Verdict
For most bathrooms, the 2-piece toilet worth picking first is the ELLAI Two Piece Elongated — a genuine head-turner with a MAP 1000-gram flush, a 17.24-inch ADA chair height, and every install part in the box at 77 pounds. It also holds the highest star score in this lineup, and owners single out the glossy black finish more than any other feature. If you specifically need the tallest possible seat, the Los Flexi sits 17.9 inches tall and comes with a two-year warranty — double what most picks here offer. And for a small bathroom, the DeerValley is the tight-space specialist — 27.56 inches deep and 16.14 inches wide means it drops into the alcove a full-size toilet will not touch.
How We Picked
We do not accept paid placement. Every pick is matched to a real buyer and a real use-case; we do not hands-on test units.
Sources & Methodology
Specifications: manufacturer listings and product documentation. Review insights: verified customer reviews, as of September 2026. Pricing: not shown on this page (it changes often); check the current price via the retailer link.
As an Amazon Associate, KitchPrep earns from qualifying purchases. This does not affect which products we feature.
Related Guides
