Choosing the best close coupled back to wall toilet starts with checking your plumbing—not just the shape of the bowl. The toilets below include one rear-outlet model for wall-mounted plumbing and four floor-mounted options with compact or skirted designs. Because those layouts are not interchangeable, confirm your outlet location, rough-in, and available space before you buy.
Table of Contents
Quick Comparison
| Toilet | Plumbing and fit | Standout features | Best for |
|---|---|---|---|
| MaceratingFlo Rear Outlet Two-Piece Toilet | Rear outlet; 7-inch rough-in | 18-inch height, elongated bowl, 1.28 GPF | Bathrooms with wall-mounted plumbing |
| CASTA DIVA Elongated One-Piece Toilet | Floor mounted; 12-inch rough-in | Dual flush, soft-close seat, 17-inch seat height | Those wanting a streamlined floor-outlet toilet |
| HOROW T0338W One-Piece Toilet | Choose 10- or 12-inch rough-in version | Dual flush, 17.3-inch seat height, compact design | Compact bathrooms and flexible rough-in needs |
| DeerValley Compact One-Piece Toilet | Floor mounted; 12-inch rough-in | 24.6-inch projection, dual flush, soft-close seat | Smaller bathrooms |
| DeerValley Elongated One-Piece Toilet | Floor mounted; 12-inch rough-in | Elongated bowl, dual flush, skirted design | Those who prefer an elongated bowl |
Our Picks: Best Close Coupled Back To Wall Toilet reviews
1. MaceratingFlo Rear Outlet Toilet: Best for Wall-Mounted Plumbing
This is the most direct match for a bathroom that needs a rear-outlet toilet. Its waste connection is designed for wall-mounted plumbing, making it a different installation type from the floor-outlet models in this roundup. The package includes the bowl, tank, seat, mounting kits, and rigid and flexible extension pipes.
The two-piece design has an 18-inch height and an elongated bowl, which may be more comfortable for taller adults or people who find a low seat difficult to use. Its skirted exterior gives it a cleaner outline and fewer exposed contours to wipe around. The listed flush uses 1.28 gallons per flush.
Check the plumbing carefully before ordering. The listed 7-inch rough-in and rear outlet are specific requirements; this is not a standard 12-inch floor-outlet replacement. The provided details also do not establish whether the bowl sits flush against every wall, so confirm the dimensions and installation plan with your plumber.
Pros:
- Rear outlet suits bathrooms with wall-mounted waste plumbing.
- 18-inch height and elongated bowl prioritize seated comfort.
- Skirted exterior is designed for easier exterior cleaning.
- Listed 1.28 GPF flush and a two-year limited warranty.
Cons:
- Requires a compatible rear-outlet setup and 7-inch rough-in.
- Not a like-for-like replacement for a typical 12-inch floor-outlet toilet.
Verdict: Choose this model if your bathroom needs a rear outlet and its plumbing matches the listed rough-in; otherwise, look at the floor-mounted options below.
2. CASTA DIVA One-Piece Toilet: Best for a Seamless Look
The CASTA DIVA is a floor-mounted one-piece toilet, not a rear-outlet model. Its tank and bowl form one integrated unit, creating a smooth exterior with fewer joints to clean. The elongated bowl and listed 17-inch seat height make it a practical option for people who want a chair-height feel.
Its dual-flush system offers a 1.1 GPF option for liquids and a 1.6 GPF option for solids. The package is described as including a slow-close seat, wax seal, and installation hardware. At about 27.17 inches deep, it is worth measuring your bathroom carefully, especially if the door or nearby fixtures limit clearance.
This model is best considered when you have a standard 12-inch floor rough-in and want a one-piece design. The product information lists two side installation holes and floor mounting, so it should not be treated as a match for wall-drain plumbing.
Pros:
- Integrated one-piece construction creates a streamlined exterior.
- Dual flush provides separate water-use options.
- Listed 17-inch seat height and elongated bowl.
- Package includes a soft-close seat and installation components.
Cons:
- Requires a 12-inch floor rough-in.
- Its roughly 27-inch depth may not suit very tight spaces.
Verdict: Pick the CASTA DIVA if you have floor plumbing and want an integrated look with a dual-flush system and chair-height seat.
3. HOROW T0338W: Best for Compact Spaces and Rough-In Choices
The HOROW T0338W is a compact, floor-mounted one-piece toilet with a skirted exterior and elongated bowl. Its listed dimensions are 26.6 inches deep, 15 inches wide, and 26 inches high, making it a potential fit for bathrooms where a full-size toilet feels bulky. The seat height is listed as 17.3 inches.
The dual-flush setup offers 1.1 and 1.6 GPF options. The product details also describe a siphon flush and fully glazed 2-inch trapway. A soft-close seat is included, and the package information lists a wax ring and floor bolts.
One useful detail is the availability of 10- and 12-inch rough-in versions. Make sure you select the version that matches your existing floor plumbing; the two sizes are not interchangeable without changes to the installation. This is still a floor-outlet toilet, so it will not replace a rear-outlet model without plumbing work.
Pros:
- Compact dimensions may work well in smaller bathrooms.
- Available in 10- and 12-inch rough-in versions.
- Dual flush and a skirted exterior support water-conscious use and simpler cleaning.
- 17.3-inch seat height and soft-close seat are listed features.
Cons:
- Floor-mounted design does not suit rear-outlet plumbing.
- You must select the correct rough-in size before purchase.
Verdict: The HOROW is a strong option for a compact floor-plumbing installation, particularly when you need a choice of rough-in size.
4. DeerValley Compact One-Piece Toilet: Best for a Short Projection
This DeerValley model is designed to save space in a smaller bathroom. Its listed projection from the wall is 24.6 inches, noticeably shorter than the depths listed for several other toilets here. It has a round bowl, which can help keep the overall footprint compact, though shoppers who prefer an elongated seat may find the shape less appealing.
The dual-flush system is listed at 0.8 GPF for a half flush and 1.28 GPF for a full flush. It also includes a removable soft-close seat and a skirted trapway. The package description lists a wax ring, floor bolts, water fitting, and instructions.
This is a floor-mounted toilet with a 12-inch rough-in, so its compact size does not make it suitable for rear-outlet plumbing. The product details describe the seat as nearly 17 inches high; check the exact seat height and bowl shape against your comfort needs before ordering.
Pros:
- 24.6-inch projection is suited to space-conscious layouts.
- Dual-flush options include a 0.8 GPF half flush.
- Removable soft-close seat supports cleaning and maintenance.
- Skirted design reduces exposed exterior contours.
Cons:
- Round bowl may not suit those who prefer an elongated seat.
- Requires a 12-inch floor rough-in.
Verdict: Consider this DeerValley if bathroom depth is your main concern and you have a compatible 12-inch floor outlet.
5. DeerValley Elongated One-Piece Toilet: Best for an Elongated Bowl
This DeerValley toilet pairs a one-piece body with an elongated bowl and a skirted exterior. Its listed dimensions are 28.75 inches long, 14 inches wide, and 28 inches high, so measure the available floor space before choosing it. The listed seat height is 16 7/8 inches, closer to standard height than the chair-height options in this roundup.
The dual-flush system is listed at 1.1 and 1.6 GPF. The product description also notes a glazed surface and removable seat, which can make exterior cleaning and seat maintenance more straightforward. Its 12-inch rough-in is a key fit requirement.
Compared with the shorter DeerValley model, this one has an elongated bowl but takes up more length. Like the other standard floor-mounted toilets in this list, it is not a rear-outlet replacement. The supplied information lists installation parts, including a wax ring and seat accessories.
Pros:
- Elongated bowl offers a larger seating area than a round bowl.
- Dual-flush system provides two flush options.
- Skirted one-piece exterior is designed for easier wiping.
- Removable seat supports cleaning and replacement.
Cons:
- 28.75-inch length may be too large for tight bathrooms.
- Uses a 12-inch floor rough-in, not a rear outlet.
Verdict: Choose this model if you want an elongated, skirted floor-mounted toilet and have room for its longer footprint.
How to Choose a Close Coupled Back to Wall Toilet
Match the outlet to your plumbing
This is the first and most important check. A rear-outlet toilet sends waste through the wall, while the four one-piece alternatives here are described as floor-mounted models. A toilet designed for one outlet type is not a simple swap for the other. If you are unsure, have a plumber identify the drain location before ordering.
Measure the rough-in
The rough-in is the distance from the finished wall to the toilet’s floor drain connection. The MaceratingFlo is listed with a 7-inch rough-in for its rear-outlet installation. The CASTA DIVA, DeerValley compact model, and DeerValley elongated model list 12-inch floor rough-ins. The HOROW is offered in 10- and 12-inch versions. Verify the measurement for your bathroom and choose the matching configuration.
Check projection and room clearance
Measure from the wall to the front of the toilet, then check the space around the door, vanity, and other fixtures. The DeerValley compact toilet has a listed 24.6-inch projection, while the other listed models are deeper. Remember that a compact round bowl and a longer elongated bowl can feel different in use, even when both fit the room.
Pick a seat height and bowl shape that suit you
The MaceratingFlo is listed at 18 inches tall, the HOROW at a 17.3-inch seat height, and the CASTA DIVA at a 17-inch seat height. The DeerValley elongated model lists a 16 7/8-inch seat height, while the compact DeerValley is described as nearly 17 inches. Heights can be stated differently across product listings, so confirm whether a measurement refers to the bowl or the seat. An elongated bowl offers more seating area, while a round bowl can help save space.
Compare flush options and water use
The MaceratingFlo is listed at 1.28 GPF. The CASTA DIVA and HOROW offer dual-flush options of 1.1 and 1.6 GPF; the compact DeerValley lists 0.8 and 1.28 GPF; and the elongated DeerValley lists 1.1 and 1.6 GPF. Consider which flush options matter to you, but do not assume that different toilets perform identically just because their listed water use is similar.
Decide how much cleaning convenience matters
Skirted sides hide the trapway contours that are exposed on many traditional toilet designs, which can make wiping around the base easier. One-piece models also have fewer visible joints between tank and bowl. A skirted design can still require careful installation access, so check how the toilet is mounted and how the included hardware is used.
Review what comes in the box
Included parts vary. Some listings mention a seat, wax ring, floor bolts, or installation hardware, while the MaceratingFlo package describes rigid and flexible extension pipes for its rear-outlet setup. Confirm the current package contents and whether you need any additional parts or professional installation before placing your order.
Frequently Asked Questions
What does “back to wall” mean for a toilet?
It generally describes a toilet positioned with its rear close to the wall, often with a smooth or concealed-looking exterior. The phrase alone does not tell you whether the waste outlet is in the floor or the wall. Confirm the outlet type and installation dimensions for the specific model.
Is a rear-outlet toilet the same as a floor-outlet toilet?
No. A rear-outlet toilet connects to plumbing through the wall, while a floor-outlet toilet connects through the floor. The MaceratingFlo in this roundup is designed for rear-outlet plumbing. The other four listed models are floor-mounted choices.
Can I replace my current toilet without changing the plumbing?
That depends on your current outlet type, rough-in, and the new toilet’s requirements. Match the outlet and rough-in before buying. If the measurements or drain location differ, ask a plumber whether the new toilet can be installed without changes.
Which toilet is best for a small bathroom?
The compact DeerValley has the shortest listed projection at 24.6 inches and a round bowl. The HOROW is also described as compact, with listed dimensions of 26.6 inches deep by 15 inches wide. Measure your space and compare those dimensions with the room before deciding.
Are dual-flush toilets always more water-efficient?
Dual-flush models offer more than one flush volume, which gives you a lower-volume option for some uses. The listed options vary by model, and actual water use depends on which setting you choose. Compare the GPF details for the specific toilet you are considering.
Which option has the highest listed seat height?
The MaceratingFlo is described as an 18-inch-tall toilet. The HOROW lists a 17.3-inch seat height, and the CASTA DIVA lists a 17-inch seat height. Check each listing’s measurement method and confirm the seat height if accessibility is a priority.
Final Recommendation
For a true rear-outlet installation, the MaceratingFlo is the clearest match in this group, provided its 7-inch rough-in and wall plumbing fit your bathroom. If your drain is in the floor, the HOROW offers compact dimensions and a choice of rough-in versions, while the DeerValley compact model is worth considering when minimizing projection matters most. Confirm your plumbing and measurements first; that will narrow the choice more reliably than appearance alone.
