Finding the best toilet with a water tank above the bowl starts with matching the toilet to your plumbing and the people who will use it. The options below include a conventional tank-style design, a pressure-assisted model, and a rear-outlet toilet for wall plumbing. Compare the outlet type, rough-in, height, and flush requirements before choosing—those details matter as much as the look of the toilet.
Table of Contents
Quick Comparison
| Toilet | Notable feature | Best suited for | Availability |
|---|---|---|---|
| SANIFLO Saniaccess 3 Toilet Bundle | Elongated bowl and tank bundle listing | Shoppers considering a SaniFlush-line setup | Available |
| Los Flexi Pressure-Assisted Toilet | 1.0 GPF flush and 18.8-inch height | Those seeking a taller seat and forceful flush | Available |
| maceratingflo Rear-Outlet Toilet | Rear outlet, 18-inch height, 1.28 GPF | Bathrooms with compatible wall plumbing | Available |
| SUPERFLO 21-Inch Extra-Tall Toilet | 21-inch height and 1.28 GPF flush | People who want an especially high bowl | Currently listed as unavailable |
Our Picks: Best Toilet With Water Tank Above reviews
1. SANIFLO Saniaccess 3 Toilet and Tank Bundle
The SANIFLO listing is aimed at shoppers looking for an elongated toilet bowl and tank combination in the SaniFlush line. Its vitreous china construction is a familiar choice for a residential bathroom, and the listed four-year limited warranty is longer than the warranties stated for the other available options here.
There is an important detail to verify before ordering: the title describes a bowl-and-tank bundle, while the product description also mentions a “tank only configuration” that lets you select a matching bowl. Check the current listing carefully to confirm exactly which components are included. The description also specifies a right-hand trip lever, so consider whether that placement works with your bathroom layout.
This option may suit you if you want a SANIFLO-branded setup and are comfortable confirming the package contents before purchase. The supplied information does not give the toilet’s height, flush volume, or rough-in, so compare those details with your existing installation rather than assuming it will be a direct fit.
Pros:
- Vitreous china construction
- Listed as coordinating with products in the SaniFlush line
- Four-year limited warranty stated in the product description
- Elongated bowl and tank are included in the product title
Cons:
- The description is unclear about whether the bowl is included
- Height, flush volume, and rough-in are not stated in the supplied details
Verdict: Consider this bundle if its SaniFlush compatibility fits your plans, but confirm the included parts and installation specifications before buying.
2. Los Flexi Pressure-Assisted Toilet With 18.8-Inch Height
This two-piece toilet uses a close-coupled tank with a pressure-assisted flush system. The listing states a 1.0-gallon-per-flush rate, a 2-inch fully glazed trapway, and a pressure range of 20–124 PSI. Those specifications make water supply pressure especially important: check that your plumbing meets the stated range before choosing this model.
Its 18.8-inch height and elongated bowl may be a practical fit for people who prefer a taller seat. The product also includes a soft-close seat and installation hardware, and it is described as compatible with a 12-inch rough-in. The listing calls out ADA comfort height, but check the full product specifications and local requirements if formal accessibility compliance matters for your project.
Compared with the other choices here, this is the clearest option for shoppers prioritizing a low stated flush volume and a pressure-assisted system. The trade-off is that pressure-assisted flushing depends on meeting the listed water-pressure range, and the stated warranty is two years.
Pros:
- Listed 1.0 GPF flush rate
- 18.8-inch height and elongated bowl
- Soft-close seat and installation hardware are included
- 12-inch rough-in compatibility is stated
Cons:
- Requires water pressure within the stated 20–124 PSI range
- Two-year limited warranty is shorter than the SANIFLO warranty listed here
Verdict: Choose the Los Flexi if you want a taller, pressure-assisted toilet and have confirmed that your water pressure and rough-in match its requirements.
3. maceratingflo Rear-Outlet Toilet With 18-Inch Height
This two-piece toilet is designed for rear-discharge plumbing, not a standard floor outlet. The product description says it is intended for wall-mounted plumbing and includes a P-trap with a 7-inch rough-in. That makes it a possible option for a renovation or bathroom layout where a rear outlet is needed, but it is not a general-purpose replacement for every floor-mounted toilet.
The listed 18-inch height and elongated bowl focus on comfort, while the skirted ceramic exterior gives the toilet a smooth-sided look that may be easier to clean around. Its stated flush rate is 1.28 GPF. Confirm the rear outlet and rough-in measurements against your plumbing before ordering; an outlet mismatch can prevent installation even when the toilet otherwise fits the room.
Compared with the Los Flexi, this model uses a rear outlet and has a slightly lower stated height. It may suit a bathroom with compatible wall plumbing better than a shopper simply replacing a conventional floor-outlet toilet. The product description lists a two-year limited warranty.
Pros:
- Designed for rear-outlet plumbing and includes a P-trap
- 18-inch height with an elongated bowl
- Listed 1.28 GPF flush rate
- Skirted design creates fewer exposed curves around the base
Cons:
- Only suits a compatible rear-outlet plumbing setup
- Requires careful confirmation of the listed 7-inch rough-in
Verdict: Pick this model when your bathroom needs a rear-outlet toilet and its outlet dimensions match your plumbing; otherwise, look at a toilet made for your existing outlet type.
4. SUPERFLO 21-Inch Extra-Tall Toilet
The SUPERFLO stands out for its stated 21-inch height, making it the tallest option in this comparison. It has an elongated bowl, a soft-close seat, an S-trap, and a single-flush tank. The listing also states a 1.28 GPF flush rate and describes the flush as MAP-certified at 1000g.
This model may be worth considering if a particularly high seat is a priority for you or someone in your household. Height is personal, though: a 21-inch toilet can feel too tall for some users, so consider who will use it most often. The S-trap also makes it important to confirm that its outlet setup suits your plumbing.
The main practical limitation is availability: the supplied product information lists this toilet as unavailable. It is therefore not the most straightforward choice to buy right now. If it becomes available, check the current listing for fit details and confirm that the S-trap works with your installation. The supplied description does not state a warranty period.
Pros:
- 21-inch listed height for shoppers seeking an extra-tall bowl
- Elongated bowl and soft-close seat
- Listed 1.28 GPF flush rate
- Single-flush tank design
Cons:
- Listed as unavailable in the supplied product information
- 21-inch height and S-trap may not suit every user or installation
Verdict: Keep the SUPERFLO in mind if you need an extra-tall toilet, but check availability and verify its S-trap fit before planning a purchase.
How to Choose a Toilet With a Water Tank Above
Match the outlet to your plumbing
First, identify whether your existing toilet connects through the floor or through the wall. A rear-outlet model such as the maceratingflo is designed for wall plumbing, while the SUPERFLO listing specifies an S-trap. Do not assume that a toilet will fit just because the bowl and tank look similar to your current one. If you are unsure, have a plumber confirm the outlet type before ordering.
Measure the rough-in and available space
Rough-in is the distance used to position the toilet’s outlet relative to the wall or plumbing connection. The Los Flexi listing specifies a 12-inch rough-in, while the maceratingflo listing gives a 7-inch rough-in for its rear-outlet setup. Measure your bathroom and compare the product’s installation requirements with your existing plumbing. Also allow enough room for the elongated bowl and for comfortable access around the toilet.
Choose a height that suits the people using it
The listed heights range from 18 inches to 21 inches for three of these options. A taller bowl can make sitting down or standing up easier for some people, but it may not feel comfortable for everyone. Consider the regular users of the bathroom and the seat height they prefer. If accessibility standards are important, verify the product’s full compliance details rather than relying on a height description alone.
Compare flush systems and water use
The Los Flexi listing describes a pressure-assisted system with a 1.0 GPF rate and a required pressure range of 20–124 PSI. The maceratingflo and SUPERFLO descriptions state 1.28 GPF. Check your home’s water pressure where relevant, and review the product’s flushing and installation specifications. The SANIFLO details supplied here do not state a flush volume, so confirm that information in its listing before comparing water use.
Confirm exactly what comes in the box
Toilet listings can describe a bowl, tank, seat, trap, or installation hardware in different ways. The SANIFLO title describes a bowl and tank bundle, but its description also mentions a tank-only configuration. Confirm the package contents before buying, especially if you expect a complete toilet. For the other models, check the listing for any parts or fittings that may need to be purchased separately.
Review warranty and support details
The listed warranty periods vary: the SANIFLO description states four years, while the Los Flexi and maceratingflo descriptions each state two years. The supplied SUPERFLO description does not give a warranty period. Read the current product terms and confirm what is covered, particularly if installation requires changes to your plumbing.
Frequently Asked Questions
What does “toilet with water tank above” mean?
It usually refers to a toilet with a tank mounted above or directly behind the bowl. The options in this comparison are described as tank-style toilets or bundles, but their outlet types and flushing systems differ. Check the product details to make sure the model matches your intended setup.
Is a rear-outlet toilet interchangeable with a floor-outlet toilet?
No. The maceratingflo is designed for rear-outlet wall plumbing, while a floor-outlet toilet connects through the floor. Confirm your outlet location and measurements before choosing a replacement.
Which option has the tallest stated height?
The SUPERFLO listing states a 21-inch height. The Los Flexi is listed at 18.8 inches, and the maceratingflo at 18 inches. Check how the measurements are defined in the product listing, and consider who will use the toilet before choosing the tallest option.
Which toilet uses the least water per flush?
Of the products with flush volumes supplied here, the Los Flexi is listed at 1.0 GPF. The maceratingflo and SUPERFLO are each listed at 1.28 GPF. The supplied SANIFLO information does not state a flush volume.
Does the Los Flexi need a special water supply?
Its description specifies a pressure range of 20–124 PSI for the pressure-assisted flush system. Check your water pressure against that range before buying, and consult a qualified plumber if you are not sure how to measure it.
Is the SUPERFLO available to buy?
The supplied product information lists it as unavailable. Check the listing for current availability before making plans to purchase it.
What should I check before ordering a toilet?
Confirm the outlet type, rough-in, available space, seat height, flush requirements, and package contents. If you are replacing an existing toilet, compare those details with your current setup or ask a plumber to verify them.
Final Recommendation
For a taller toilet with clear flush and rough-in specifications, the Los Flexi is the most straightforward option in this group, provided your water pressure falls within its stated range. Choose the maceratingflo only if you need a rear-outlet toilet and its measurements match your plumbing. The SANIFLO may suit a SaniFlush-line project, but confirm whether the bowl is included. The SUPERFLO offers the greatest stated height, though it is listed as unavailable. In every case, check the installation details before ordering.
