Choosing the best one piece elongated toilet means balancing comfort, water use, bathroom fit, and ease of cleaning. The five options below all have a 12-inch rough-in and an elongated bowl, but they differ in seat height, flush volume, and included features. Compare the details with your bathroom measurements before you choose.
Table of Contents
Quick Comparison
| Toilet | Flush | Height and standout features | Rough-in |
|---|---|---|---|
| DeerValley Elongated One Piece Toilet | Dual flush, 1.1/1.6 GPF; 800g MaP | 16 7/8-inch standard seat height; skirted design | 12 inches |
| Casta Diva Elongated One Piece Toilet | Dual flush, 1.1/1.6 GPF; 1000 MaP | 17-inch chair-height seat; soft-close, quick-release seat | 12 inches |
| Swiss Madison St. Tropez One-Piece Toilet | Vortex dual flush, 1.1/1.6 GPF | Comfort height; scratch-resistant ceramic | 12 inches |
| HOROW HR-ST076WD One Piece Toilet | Dual flush, 1.1/1.6 GPF; 800g MaP | Chair-height seating; soft-close seat included | 12 inches |
| CANEST T01 Elongated One Piece Toilet | Dual flush, 0.9/1.28 GPF | ADA-height seat; soft-close, quick-release seat | 12 inches |
Our Picks: Best One Piece Elongated Toilet reviews
1. DeerValley Elongated One-Piece Toilet: A Water-Saving, Easy-Clean Design
This DeerValley model combines an elongated bowl with a one-piece, skirted exterior. Its listed dimensions are 28.75 inches long, 14 inches wide, and 28 inches high. The seat height is 16 7/8 inches, which is closer to standard height than the taller chair-height options in this group.
The dual-flush system uses 1.1 gallons for a lighter flush and 1.6 gallons for a fuller flush. The product information also lists an 800g MaP score. Its glazed surface and smooth skirted sides are intended to make exterior cleaning easier, while the quick-release seat can be removed for cleaning or replacement.
This could suit a household looking for a streamlined toilet with two flush choices and a more traditional seat height. One trade-off is that its standard-height seat may be less convenient for people who prefer a taller sitting position. The supplied availability information also marks this model unavailable, so check the listing before making it your first choice.
Pros:
- Dual-flush options use 1.1 or 1.6 GPF.
- Skirted design has fewer exterior grooves to clean.
- Quick-release seat supports easier cleaning and replacement.
- Listed 800g MaP score.
Cons:
- Standard seat height is lower than the chair-height models here.
- The supplied availability information marks it unavailable.
Verdict: Choose the DeerValley if its standard-height seat and cleaning-focused design fit your needs, but confirm availability before planning around it.
2. Casta Diva Compact One-Piece Toilet: Taller Seating and a Strong Flush Rating
The Casta Diva pairs a compact, skirted one-piece body with a 17-inch chair-height seat. It measures 27.17 inches deep, 14.37 inches wide, and 25.39 inches high, making it the shortest listed model by overall height. Its 1000 MaP rating and fully glazed trapway are notable specifications for shoppers who put flushing performance high on their list.
The dual-flush system offers 1.1 and 1.6 GPF options. The package description lists a soft-close, quick-release seat, pre-installed fill and flush valves, a wax seal, and installation hardware. The listing also states that the toilet meets EPA WaterSense criteria and has cUPC certification.
This is a feature-rich option for someone who wants a taller seat and a compact overall profile. However, its seat height may not suit everyone, and the supplied availability information marks the model unavailable. Verify that it can be ordered and confirm the package contents before scheduling installation.
Pros:
- 17-inch chair-height seat.
- Listed 1000 MaP flush rating and fully glazed trapway.
- Soft-close, quick-release seat is included.
- Package description lists a wax seal and installation hardware.
Cons:
- The taller seat may not be the right height for every user.
- The supplied availability information marks it unavailable.
Verdict: The Casta Diva stands out on listed flush performance and included installation items, provided its availability and 17-inch seat height work for you.
3. Swiss Madison St. Tropez: Vortex Dual Flush in a Comfort-Height Design
The St. Tropez is a one-piece elongated toilet with a comfort-height design and a standard 12-inch rough-in. Its Vortex dual-flush system uses a cyclonic rinsing action, with a lower 1.1 GPF option and a 1.6 GPF option. The listing describes the ceramic as non-porous and scratch-resistant.
Compared with the DeerValley and HOROW models, this toilet’s listed specifications focus on its flush design and ceramic rather than a MaP score or included installation kit. The product information does not provide dimensions or a numeric seat height, so measure your space and check the full listing details if those numbers are important to your decision.
The supplied availability information marks this model available. Its combination of comfort-height seating and a dual-flush system makes it a straightforward option to consider, though the lack of listed dimensions means you should verify bathroom clearance before ordering.
Pros:
- Vortex dual-flush system offers 1.1 and 1.6 GPF options.
- Comfort-height design with an elongated bowl.
- Standard 12-inch rough-in.
- Listed ceramic is non-porous and scratch-resistant.
Cons:
- Product details provided do not include dimensions or a numeric seat height.
- No MaP score or installation-kit details are provided in the supplied description.
Verdict: Consider the St. Tropez if you want comfort height and a vortex-style dual flush, but confirm its measurements and package details before purchase.
4. HOROW HR-ST076WD: A Compact, Easy-Clean Toilet with a Soft-Close Seat
The HOROW HR-ST076WD is designed for smaller bathrooms, apartments, and powder rooms. It measures 28.75 inches deep, 14 inches wide, and 28 inches high. The elongated bowl and chair-height seating add comfort, while its skirted exterior hides much of the trapway for a simpler outside surface to clean.
Its dual-flush system offers 1.1 GPF for liquid waste and 1.6 GPF for solid waste, with an average of 1.28 GPF stated in the product description. The listed MaP score is 800g. A soft-close seat with stainless-steel hinges is included, along with a wax ring, floor bolts, pre-installed flush valve, and instructions.
Among these choices, HOROW offers a useful balance of compact dimensions, cleaning features, and clearly listed package contents. It still needs a standard 12-inch rough-in, and the seller recommends professional installation. Its one-year limited warranty and lifetime after-sales service are stated in the product details.
Pros:
- Compact footprint with an elongated bowl and chair-height seating.
- Dual-flush system uses 1.1 or 1.6 GPF.
- Soft-close seat, wax ring, and floor bolts are listed as included.
- Skirted design and removable seat support easier cleaning.
Cons:
- Requires a 12-inch rough-in, so existing plumbing must match.
- Professional installation is recommended by the seller.
Verdict: The HOROW is a strong all-around choice if you want a compact elongated toilet with a soft-close seat and useful installation items included.
5. CANEST T01: Lower-Volume Dual Flush with an ADA-Height Seat
The CANEST T01 has an elongated bowl, a one-piece body, and an ADA-height seat according to its product description. Its standout specification is the dual-flush system: 0.9 GPF for a lighter flush and 1.28 GPF for a fuller flush. Those flush volumes are lower than the 1.1/1.6 GPF systems on the other models in this roundup.
A soft-close, quick-release seat is included, and the fully skirted exterior is designed to make routine cleaning easier. The toilet uses a standard 12-inch rough-in. The description does not list dimensions, a MaP score, or specific installation items, so check those details if you need a precise fit or want to plan a do-it-yourself installation.
This model may suit shoppers who prioritize lower listed flush volumes and taller seating. Keep in mind that the product information does not give a numeric seat height, so compare the actual measurement with your needs rather than relying on the ADA-height label alone.
Pros:
- Dual flush offers 0.9 and 1.28 GPF options.
- ADA-height seat and elongated bowl.
- Soft-close, quick-release seat is included.
- Skirted exterior has a smooth, streamlined look.
Cons:
- Product details provided do not include dimensions or a MaP score.
- Installation-kit contents are not specified in the supplied description.
Verdict: Pick the CANEST T01 if lower listed flush volumes and an ADA-height seat are priorities, and verify the seat measurement and installation details before ordering.
How to Choose a One-Piece Elongated Toilet
Measure the rough-in and available space
A 12-inch rough-in is listed for all five toilets, but you should still measure your existing setup before ordering. Check the distance from the finished wall to the floor bolts, then compare the toilet’s depth, width, and height with your bathroom. The DeerValley, Casta Diva, and HOROW descriptions provide dimensions; the Swiss Madison and CANEST descriptions do not, so look for the full measurements on their product listings.
Choose a seat height that suits your household
Seat height affects how easy it feels to sit down and stand up. The DeerValley lists a 16 7/8-inch standard seat height, while the Casta Diva lists a 17-inch seat. The other descriptions use terms such as comfort height, chair height, or ADA height without giving a numeric measurement. If height is a deciding factor, confirm the measurement before buying.
Compare flush volumes and performance details
Four models list 1.1/1.6 GPF dual-flush systems, while the CANEST offers 0.9/1.28 GPF. Lower flush volumes can help limit water use, but also consider the performance information provided: DeerValley and HOROW list 800g MaP scores, and Casta Diva lists 1000 MaP. The St. Tropez describes a vortex flush but does not include a MaP score in the supplied details.
Consider cleaning and seat features
A skirted toilet has a smoother exterior that can be easier to wipe than a design with exposed curves and grooves. The models here describe skirted designs, and some add a removable or quick-release seat for cleaning. Soft-close seats are listed for Casta Diva, HOROW, and CANEST. Check what comes in the box rather than assuming every model includes the same seat or accessories.
Check installation requirements and included parts
All five models list a standard 12-inch rough-in, but their package details differ. HOROW lists a wax ring and floor bolts, while Casta Diva lists a wax seal and installation hardware. For the other models, the supplied descriptions do not specify the full installation kit. Confirm what is included, and consider professional installation if you are replacing plumbing or are unsure about the fit.
Review availability and warranty information
Availability can change, so check the listing before you make plans around a particular model. In the supplied product information, DeerValley and Casta Diva are marked unavailable, while the other three are marked available. HOROW lists a one-year limited warranty and lifetime after-sales service; Casta Diva lists a one-year limited customer service period and lifetime technical consulting. Check each listing for current terms before purchase.
Frequently Asked Questions
What does a 12-inch rough-in mean?
It refers to the toilet’s required distance from the finished wall to the floor drain connection area. Measure your existing setup before ordering, since a toilet with the wrong rough-in may not fit your plumbing arrangement.
What is the benefit of an elongated toilet bowl?
An elongated bowl extends farther forward than a round-front bowl and may feel roomier to sit on. Its longer shape can also take up more floor space, so check the toilet’s depth against your bathroom layout.
Is a one-piece toilet easier to clean?
A one-piece design joins the tank and bowl into a single unit, without the separate tank-to-bowl seam found on a two-piece toilet. Skirted sides can also reduce exterior grooves. The exact cleaning experience depends on the shape and features of the model.
Which toilet in this list uses the least water per flush?
The CANEST T01 lists the lowest flush volumes: 0.9 GPF for one flush option and 1.28 GPF for the other. The other four models list 1.1/1.6 GPF dual-flush systems.
Which option lists the highest MaP score?
The Casta Diva lists a 1000 MaP score. DeerValley and HOROW each list an 800g MaP score. The supplied descriptions do not give MaP scores for the Swiss Madison or CANEST models.
Do all five toilets include a soft-close seat?
No. The product descriptions specifically list a soft-close seat for Casta Diva, HOROW, and CANEST. The supplied information for DeerValley describes a removable, easy-release seat, while the Swiss Madison description does not specify seat features.
Which model is the best overall choice?
Based on the listed features, the HOROW HR-ST076WD is a balanced option for shoppers who want compact dimensions, chair-height seating, a skirted design, and a soft-close seat. If lower flush volumes matter most, consider the CANEST T01 instead, after confirming its measurements and installation details.
Final Recommendation
For a useful mix of compact sizing, comfort, cleaning features, and clearly listed included parts, the HOROW HR-ST076WD is the most balanced pick in this group based on the supplied specifications. The CANEST T01 is worth considering if its lower flush volumes are your priority. Before buying any model, confirm the rough-in, bathroom clearance, seat height, availability, and package contents.
