If you want a toilet with a smoother exterior that is easier to wipe down, these three models offer two distinct approaches. I give the Aonlee elongated one-piece the edge for its skirted trapway, dual-flush choices, and included soft-close seat. The Kohler Memoirs in white pairs a concealed trapway with AquaPiston flushing and ContinuousClean ST, while the biscuit-finish Memoirs brings the same cleaning system to a warmer color scheme. The main choice is between Aonlee’s one-piece, dual-flush design and Kohler’s two-piece models with an automatic cleaning-solution dispenser; among the Kohlers, color and verified fit matter more than the shared feature set.
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Key Takeaways
- Aonlee is the only one-piece pick and the only model here with a dual-flush choice of 1.1 or 1.6 GPF.
- Both Kohler Memoirs models use a concealed trapway, 1.28 GPF AquaPiston flush, and ContinuousClean ST; their listed differences center on color and dimensions.
- Choose the white Kohler for a white bathroom palette, and the biscuit Kohler if its warmer finish matches your fixtures.
- Aonlee’s skirted exterior and included soft-close seat make it a practical pick for buyers who want fewer visible contours and stated included hardware.
- Verify the Kohler models’ measurements and listed weight with the seller before purchase, since the supplied specifications differ and the weight entries appear unusually low.
| Aonlee Elongated Comfort Height One-Piece Toilet with Dual Flush |  | Best Overall | Type: One-piece toilet | Trapway: Skirted | Bowl shape: Elongated | VIEW ON AMAZON | See Our Full Breakdown |
| KOHLER Memoirs Stately ContinuousClean ST Two-Piece Elongated Toilet |  | Best for a White Bathroom With Automatic Cleaning | Type: Two-piece toilet | Model: 36669-0 | Trapway: Concealed; 2-1/8-inch fully glazed trapway | VIEW ON AMAZON | See Our Full Breakdown |
| Kohler Memoirs Stately ContinuousClean ST Two-Piece Elongated Toilet |  | Best for a Biscuit Finish | Type: Two-piece toilet | Model: 36669-96 | Trapway: Concealed; 2-1/8-inch fully glazed trapway | VIEW ON AMAZON | See Our Full Breakdown |
| toilet with concealed trapway | Type | Trapway | Bowl shape | Flush |
|---|---|---|---|---|
| Aonlee Elongated Comfort Heigh | One-piece toilet | Skirted | Elongated | Dual flush, 1.1 and 1.6 GPF |
| KOHLER Memoirs Stately Continu | Two-piece toilet | Concealed; 2-1/8-inch fully glazed trapway | Elongated | AquaPiston, 1.28 GPF |
| Kohler Memoirs Stately Continu | Two-piece toilet | Concealed; 2-1/8-inch fully glazed trapway | Elongated | AquaPiston, 1.28 GPF |
More Details on Our Top Picks
Aonlee Elongated Comfort Height One-Piece Toilet with Dual Flush
The Aonlee is the most versatile match for buyers who want a smooth-sided toilet and a choice of flush volumes. Its skirted trapway reduces the exposed contours around the base, while the one-piece ceramic body gives the exterior a continuous look. That makes it the strongest all-around fit in this group for someone prioritizing a simpler-to-wipe profile without giving up a meaningful flush choice.
The 1.1 and 1.6 GPF dual-flush settings give buyers two water-use options, unlike the fixed 1.28 GPF flush on either Kohler Memoirs. The elongated bowl and 16.5-inch seat height also make it a straightforward comfort-oriented choice. Compared with the Kohlers’ ContinuousClean ST system, Aonlee’s advantage is included hardware: the product details specify a soft-close seat, while the Kohler listings call out a dispenser that uses cleaning solution with each flush.
The tradeoff is that Aonlee does not list an automatic cleaning-solution feature, and its skirted trapway is described differently from Kohler’s concealed trapway. Buyers seeking the specific Kohler cleaning system should choose one of those models instead. At 117 pounds, it is also a substantial fixture to handle during installation, and buyers should confirm bathroom rough-in and connections before ordering.
Pros:- Dual-flush options of 1.1 and 1.6 GPF
- Elongated bowl and 16.5-inch comfort-height seat
- Skirted trapway gives the exterior fewer exposed contours to wipe
- Soft-close seat is included in the product details
Cons:- No automatic cleaning-solution system is listed
- Weighs 117 pounds, which can make handling during installation harder
- Confirm rough-in and installation compatibility before ordering
Best for: Buyers who want a one-piece, elongated toilet with a skirted exterior, dual-flush options, and a soft-close seat listed as included.
Not ideal for: Shoppers who specifically want a dispenser that adds cleaning solution with each flush or prefer Kohler’s named concealed-trapway design.
- Type:One-piece toilet
- Trapway:Skirted
- Bowl shape:Elongated
- Seat height:16.5 inches
- Flush:Dual flush, 1.1 and 1.6 GPF
- Material:Ceramic
- Dimensions:27.36 × 14.96 × 30.31 inches (D × W × H)
- Installation:Floor mounted
Our verdict“I’d start with the Aonlee if a skirted one-piece design, dual flush, and included soft-close seat matter more than an automatic cleaning-solution dispenser.”
KOHLER Memoirs Stately ContinuousClean ST Two-Piece Elongated Toilet
This white Memoirs is the clearest pick for a buyer who wants a concealed trapway plus an automatic cleaning-solution dispenser. ContinuousClean ST dispenses solution with each flush, giving it a maintenance feature the Aonlee does not list. Its 1.28 GPF AquaPiston system also differs from Aonlee’s two selectable flush volumes: here the flush rate is fixed, so the buying decision centers more on the cleaning system and bathroom fit.
The model’s elongated bowl and chair-height seating follow the comfort-focused direction shared by all three options. Low-profile bolt caps and the concealed trapway are intended to make the outer surfaces easier to clean. Against the biscuit Memoirs, this white version has the same listed flush and cleaning systems; its main advantage is simply a finish that suits bathrooms built around white fixtures.
There are practical caveats. The product details say cleaning tablets are not included, so the dispenser feature calls for a separate consumable. Its stated dimensions are 29.94 × 18.88 × 31.13 inches, which differ from the dimensions supplied for the biscuit listing. The listed weight of 4.8 pounds also looks unusually low for a ceramic two-piece toilet, so I would confirm both measurements and shipping weight with the seller before buying.
Pros:- Concealed trapway and low-profile bolt caps simplify exterior wipe-downs
- ContinuousClean ST dispenses solution with each flush
- AquaPiston flush uses a listed 1.28 GPF
- White finish coordinates with white bathroom fixtures
Cons:- Cleaning tablets are not included in the supplied details
- Listed 4.8-pound weight should be verified
- Fixed flush rate offers no dual-flush choice
Best for: Buyers matching a white bathroom who want a concealed trapway, elongated bowl, and ContinuousClean ST solution dispensing.
Not ideal for: Anyone who wants dual-flush control, a one-piece fixture, or a purchase that does not require separate cleaning tablets.
- Type:Two-piece toilet
- Model:36669-0
- Trapway:Concealed; 2-1/8-inch fully glazed trapway
- Bowl shape:Elongated
- Flush:AquaPiston, 1.28 GPF
- Cleaning system:ContinuousClean ST
- Color:White
- Dimensions:29.94 × 18.88 × 31.13 inches (D × W × H)
Our verdict“I’d choose this Memoirs when white is the right finish and ContinuousClean ST matters more than dual-flush flexibility.”
Kohler Memoirs Stately ContinuousClean ST Two-Piece Elongated Toilet
The biscuit-finish Memoirs earns its place as the color-specific alternative in this lineup. It shares the white model’s two-piece construction, concealed trapway, 1.28 GPF AquaPiston flush, and ContinuousClean ST dispenser. If the bathroom has warm-toned fixtures or an existing biscuit palette, this finish can be the deciding factor; there is no supplied feature difference that makes it a stronger technical pick than its white counterpart.
Like the white Memoirs, it offers an elongated bowl and Comfort Height seating, along with low-profile bolt caps that help reduce dirt-catching contours around the base. That gives it a cleaning-oriented exterior similar in intent to Aonlee’s skirted design. The difference is what happens beyond the surface: Kohler adds cleaning solution with each flush, whereas Aonlee gives buyers two flush volumes and lists a soft-close seat.
Buyers should check the fit information carefully. This listing gives dimensions of 39 × 25 × 24 inches, unlike the white Memoirs listing’s 29.94 × 18.88 × 31.13 inches. It also reports a weight of 4.8 pounds, which seems unusually low for a ceramic toilet. The cleaning tablets are not listed as included, so budget space and routine replacement for the required solution into the ownership decision.
Pros:- Biscuit finish offers an alternative to the white Kohler and Aonlee
- Concealed trapway and low-profile bolt caps reduce exterior crevices
- ContinuousClean ST dispenses cleaning solution with each flush
- AquaPiston flush rate is listed at 1.28 GPF
Cons:- Cleaning tablets are not included in the supplied details
- Listed dimensions differ from the white Memoirs model and should be verified
- Listed weight of 4.8 pounds warrants confirmation
Best for: Buyers with biscuit or warm-toned bathroom fixtures who want Kohler’s concealed trapway and ContinuousClean ST system.
Not ideal for: Shoppers with a white bathroom, those who need dual flush, or anyone unwilling to source cleaning solution tablets separately.
- Type:Two-piece toilet
- Model:36669-96
- Trapway:Concealed; 2-1/8-inch fully glazed trapway
- Bowl shape:Elongated
- Flush:AquaPiston, 1.28 GPF
- Cleaning system:ContinuousClean ST
- Color:Biscuit
- Dimensions:39 × 25 × 24 inches (D × W × H)
Our verdict“I’d choose the biscuit Memoirs when its finish fits the room, since its value over the white version is primarily the color match.”
How We Picked
I ranked these toilets around the phrase “toilet with concealed trapway”, so the exterior design and the cleaning task it affects are central to my comparison. Aonlee describes its trapway as skirted, while Kohler calls its Memoirs trapway concealed. Those terms point to a smoother-sided profile than a traditional exposed trapway, but I keep the distinction visible rather than assuming the designs are identical.
I then compared the details that shape day-to-day ownership: flush rate and system, bowl shape and height, one-piece versus two-piece construction, and cleaning features. The Aonlee offers two flush volumes and includes a soft-close seat. The Kohlers use the same 1.28 GPF AquaPiston flush and ContinuousClean ST dispenser, making their finish and fit the main choice between them. I considered buyer tradeoffs as well as advantages, including the Kohlers’ need for cleaning solution tablets and specification details that merit confirmation.
The ranking favors useful differences for more buyers, not a claim that one toilet suits every bathroom. Aonlee takes the overall spot for combining a skirted design with dual flush and a listed included seat. The white Kohler follows as the best automatic-cleaning option for a white bathroom; the biscuit model is a finish-specific alternative rather than a distinct technical upgrade. I relied on the supplied product details and did not treat ratings or review counts as evidence of performance.
| toilet with concealed trapway | Type | Trapway | Flush | Color |
|---|---|---|---|---|
| Aonlee Elongated Comfort Heigh | One-piece toilet | Skirted | Dual flush, 1.1 and 1.6 GPF | — |
| KOHLER Memoirs Stately Continu | Two-piece toilet | Concealed; 2-1/8-inch fully glazed trapway | AquaPiston, 1.28 GPF | White |
| Kohler Memoirs Stately Continu | Two-piece toilet | Concealed; 2-1/8-inch fully glazed trapway | AquaPiston, 1.28 GPF | Biscuit |
Factors to Consider When Choosing Toilet With Concealed Trapway
I’d make this choice by starting with the bathroom’s fit and finish, then comparing the trapway profile, flush setup, and cleaning routine. The three options share elongated bowls, but they split between Aonlee’s one-piece dual-flush approach and Kohler’s two-piece models with ContinuousClean ST.
Check the trapway description and exterior
A concealed or skirted trapway changes the toilet’s outside shape: fewer visible curves around the base can make wiping simpler. Kohler explicitly lists a concealed trapway and low-profile bolt caps. Aonlee lists a skirted trapway. Both descriptions point toward smoother sides than an exposed trapway, but they are not interchangeable product specifications. If the exact profile matters to your renovation, check product images and installation documentation before you choose.
Choose the flush setup that fits your priorities
Aonlee lists two flush volumes, 1.1 and 1.6 GPF, giving the buyer a selectable option for different flush needs. Both Kohlers list a fixed 1.28 GPF AquaPiston system. Those figures describe water used per flush; they do not, by themselves, establish how a toilet will perform with every waste load or plumbing setup. I’d compare the listed mechanism and installation requirements, then confirm the model suits local plumbing and applicable water-use rules.
Decide whether automatic cleaning is worth the added upkeep
ContinuousClean ST is the feature that separates the Kohlers most clearly from Aonlee: it dispenses cleaning solution with each flush. The product details do not say the tablets are included, so plan on sourcing them separately and replacing them as needed. Aonlee instead lists a soft-close seat and dual-flush options, with no automatic cleaning-solution dispenser specified. Consider whether you prefer a recurring cleaning consumable or a simpler feature set.
Measure the room and confirm the listing
Measure from the finished wall to the drain center, check side clearance, and allow space for the seat and door swing. The supplied Kohler dimension entries differ substantially, and both listings give a 4.8-pound weight that may need verification. Ask the seller or consult the manufacturer’s documentation for the exact model number before relying on those figures. The Aonlee listing gives a weight of 117 pounds, so plan for suitable help when moving it.
Match the bowl and height to daily use
All three options list an elongated bowl, which may suit buyers who want more front-to-back seating room, but it takes more floor space than a round bowl. Aonlee provides a specific 16.5-inch seat height; the Kohlers are described as Comfort Height or chair height. Check the stated height and local accessibility needs rather than relying on a label alone, especially if several household members will use the toilet.
Frequently Asked Questions
What does a concealed or skirted trapway change?
It changes the visible shape around the toilet base. A concealed or skirted profile covers more of the trapway’s curves than an exposed design, leaving a smoother exterior that can be easier to wipe. Kohler calls its design concealed, while Aonlee calls its design skirted, so I’d check the specific model’s documentation if the exact profile is important to your installation.
Which toilet in this comparison uses the least water per flush?
Aonlee lists a 1.1 GPF option, lower than the fixed 1.28 GPF rate listed for either Kohler Memoirs. Aonlee also offers a 1.6 GPF option. Those figures are flush-volume specifications and do not alone tell you how each model will perform in your home, so confirm the applicable setting and local requirements before choosing.
Do the Kohler Memoirs toilets include cleaning tablets?
The supplied product details do not list cleaning tablets as included for either Memoirs model. ContinuousClean ST dispenses cleaning solution with each flush, so check the package contents and the manufacturer’s guidance for compatible solution before purchase. Account for replacing the consumable as part of the cleaning system’s ongoing upkeep.
Are the two Kohler Memoirs models technically different?
The supplied descriptions give both Kohlers the same core features: two-piece construction, concealed trapway, elongated bowl, 1.28 GPF AquaPiston flush, and ContinuousClean ST. The clearest stated distinction is finish: one is white and the other biscuit. Their listed dimensions differ, however, so verify the exact model’s measurements with Kohler or the seller before ordering.
What should I verify before ordering one of these toilets?
Confirm the rough-in, drain and water connections, overall dimensions, seat height, included seat and hardware, and whether the toilet fits around nearby walls or fixtures. For the Kohlers, verify the dimensions and unusually low listed weight, and confirm whether cleaning solution is supplied. For Aonlee, plan for its listed 117-pound weight and check that the dual-flush setup suits your needs.
Conclusion
For the broadest mix of smooth-sided construction, dual flush, and included soft-close seating, I’d choose the Aonlee. Pick the white Kohler Memoirs if you want ContinuousClean ST in a white bathroom, or the biscuit version if its warmer finish better matches your fixtures. The Kohlers share their main technical features, so make that choice around color and verified fit. If you need a specific concealed-trapway profile, confirm the manufacturer’s model details before purchase.
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