10 Best Rear Discharge Upflush Toilets of 2026 for Basements, Tight Spaces, and Easy Upgrades

Choosing the right toilet for a basement, remodel, or tight bathroom layout can be tricky. The best rear discharge upflush toilets combine space-saving plumbing with reliable flushing power and simpler installation options.

This roundup focuses on practical choices for different needs, from compact macerating systems to taller comfort-height models for everyday use.

Best 10 Rear Discharge Upflush Toilets Picks for 2026

Best for Quiet Basement Installations – 500W Macerating Toilet with 4 Inlets

If you want a flexible, modern pick among rear discharge upflush toilets, this macerating system is designed to add a full bathroom without opening up the floor. The 500W pump, rear discharge setup, and four water inlets make it a strong fit for basement, garage, or loft installs where layout options are limited.

Best For: Homeowners who want a quiet, compact upflush toilet system with multiple fixture connections for a basement or remodel project.

Pros:

• Whisper-quiet operation at 25-35 dB for a less intrusive bathroom setup
• 4 inlet ports let you connect a toilet, shower, sink, and laundry line
• Strong pumping range supports longer vertical and horizontal runs
• Includes an extension pipe for a cleaner, more concealed installation

Cons:

• Requires a power source and proper installation planning
• May be more system than needed for a simple single-fixture bathroom

Overall, this is a practical choice if you need rear discharge upflush toilets with extra flexibility and a quieter feel. It balances performance, water efficiency, and multi-fixture support better than many basic macerating units.

Best for Tight Installations – Compact 16.5” Rear Outlet Toilet

If you’re comparing rear discharge upflush toilets for a bathroom with limited floor space or an awkward drain layout, this compact two-piece model is designed to simplify the install. The 7-inch rough-in and included extension pipes can make it easier to adapt to different setups while keeping the toilet footprint modest.

Best For: Small bathrooms, retrofit projects, and buyers who want a rear outlet toilet with flexible installation parts.

Pros:

• Space-saving compact design works well in tight bathrooms.
• Includes two types of extension pipes for more flexible installation.
• Soft-close seat reduces noise and adds everyday convenience.
• Glazed surface helps resist grime and makes cleaning easier.

Cons:

• Rear-outlet setup may require more planning than a standard toilet.
• 7-inch rough-in may not fit every bathroom configuration.

This is a practical pick if your priority is fitting rear discharge upflush toilets into a challenging space without giving up comfort or easy maintenance. It’s less about premium extras and more about adaptable installation and efficient everyday use.

Best for Multi-Fixture Basements – Simple Projec 600W Macerating Toilet System

If you need one of the more flexible rear discharge upflush toilets for a basement or remodel, this 600W system stands out for its four water inlets and strong pumping range. It is built to handle not just toilet waste, but also shower, laundry, and sink drainage, which makes it a practical option when traditional gravity plumbing is difficult.

Best For: Basements, remodels, and bathrooms that need to tie in multiple fixtures without major plumbing changes.

Pros:

• Four water inlets support multiple fixtures in one system
• 600W macerator pump offers strong lift and long horizontal run capacity
• Easy to install with no major wall modification required
• Quiet operation with stainless steel blades and included AC vent

Cons:

• Not the simplest choice if you only need a basic toilet-only setup
• May be more system than small bathrooms truly need
• Performance depends on correct installation and venting

Overall, this is a strong fit for shoppers who want rear discharge upflush toilets that can do more than just move toilet waste. Its multi-inlet design and powerful pump make it especially appealing for basement bathrooms where flexibility matters most.

Best for Seniors – SUPERFLO 19-Inch Rear Outlet Toilet

SUPERFLO’s tall rear-outlet design makes it a practical pick for buyers comparing rear discharge upflush toilets, especially when comfort height and flexible drain routing matter. The 19-inch bowl is easier to sit down on and stand up from, while the dual-flush setup helps keep daily water use in check.

Best For: Seniors, taller users, and bathrooms that need a rear drain or wall drain-compatible toilet with a comfort-height seat.

Pros:

• 19-inch tall bowl improves accessibility and sitting comfort
• Rear discharge / P-trap setup supports rear drain and wall drain installs
• Dual flush offers 1.28 GPF full flush and 0.8 GPF half flush
• Soft-close seat adds quieter everyday use

Cons:

• May require a macerator pump for broader installation flexibility
• Higher seat height may not suit every household
• Single-product setup is less versatile than modular toilet systems

This is a strong comfort-height option if you want rear discharge upflush toilets with easier access and straightforward water-saving performance. It’s especially appealing for bathrooms where height, rear outlet compatibility, and low-maintenance cleaning are top priorities.

Best for Basement Add-Ons – VEVOR 500W Macerating Toilet System

For homeowners who need a flexible way to add plumbing where gravity drain lines are unavailable, this VEVOR option stands out among rear discharge upflush toilets. The 500W macerator pump, dual-flush toilet, and extra inlet ports make it a practical choice for basement baths, laundry rooms, and other space-constrained installs.

Best For: Basements, garages, and multi-fixture bathroom projects that need a compact upflush system with extra wastewater inlets.

Pros:

• 500W pump offers strong lift and long horizontal discharge range for remote installations
• Three extra inlets let you connect a sink, shower, tub, or washer
• Dual-flush ceramic toilet helps save water while staying easy to clean
• Quiet operation and built-in carbon vent help reduce bathroom noise and odors

Cons:

• Requires proper setup and planning for best performance
• Bulkier than a standard toilet-only solution because it includes the pump system

This is a strong pick if you want a more complete plumbing solution rather than just a toilet. Among rear discharge upflush toilets, it is especially appealing for basement builds where you need both lifting power and multiple connection points.

Best for Tall Users – SUPERFLO Rear Outlet Tall Toilet

If you need a higher-seated option for a back-drain setup, this SUPERFLO model is worth a close look among rear discharge upflush toilets. Its 18.7-inch bowl height makes sitting down and standing up easier, while the dual-flush design helps keep water use in check.

Best For: Taller users, seniors, and anyone who wants a raised toilet for a rear outlet bathroom layout.

Pros:

• 18.7-inch tall bowl supports easier transfers and added bathroom safety
• Dual flush offers 1.6 GPF full flush and 0.8 GPF half flush
• Soft-close seat reduces noise and improves everyday comfort
• Smooth base design is easier to wipe down and maintain

Cons:

• Rear drain layout requires checking pipe compatibility before buying
• Round bowl may feel less spacious than elongated models

This is a practical fit if your bathroom needs a taller rear-drain toilet with simple water-saving performance. For shoppers comparing rear discharge upflush toilets, the main draw is the extra height and straightforward maintenance rather than a highly specialized feature set.

Best for High-Lift Basement Runs – Simple Project 750W Pro Macerating Toilet

If you need one of the more capable rear discharge upflush toilets for a basement, attic, or other hard-to-plumb space, this Simple Project system is built around a strong 750W macerator pump and flexible inlet options. It is designed to move waste long distances while keeping the installation compact and practical for remodels where conventional plumbing is not realistic.

Best For: Basement or attic bathrooms that need strong pumping distance, multiple fixture connections, and a space-saving upflush layout.

Pros:

• 750W pump handles long horizontal and vertical discharge runs.
• Four inlet ports support a toilet plus other bathroom fixtures.
• Dual-flush design helps reduce water use.
• Flexible placement makes it easier to fit tight installations.

Cons:

• Higher-output systems can be louder or more complex than basic units.
• Requires careful planning for venting and drain routing.

For buyers comparing rear discharge upflush toilets, this model stands out for its pumping strength and multi-fixture flexibility rather than sheer simplicity. It is a solid fit when the job calls for distance, power, and a more complete basement bathroom setup.

Best for Wall-Outlet Retrofits – Rear Discharge Toilet with 18'' Comfort Height

If you’re comparing rear discharge upflush toilets for a bathroom remodel, this model stands out for its wall-connected outlet, included P-trap, and 7-inch rough-in. The 18-inch comfort height and elongated bowl make it more usable day to day, while the 1.28 GPF rimless flush helps keep water use lower without giving up cleaning power.

Best For: Renovations and retrofit bathrooms that need a rear outlet toilet with a modern skirted look and easier access.

Pros:

• Rear discharge setup works well for wall-mounted plumbing and retrofit layouts
• 18-inch comfort height and elongated bowl improve sitting comfort
• 1.28 GPF rimless flush supports efficient, reliable waste removal
• Skirted ceramic design is easier to clean and looks more modern

Cons:

• Not the simplest pick for standard floor-drain installations
• May require careful measurement for rough-in and extension pipe fit
• Two-piece construction can take a bit more assembly than one-piece models

For buyers focused on remodel flexibility, this is a strong fit among rear discharge upflush toilets because it combines practical installation features with comfort-height usability and a cleaner, low-profile appearance.

Best Heavy-Duty Pick – Simple Project 19-Inch Rear Discharge Toilet

If you need one of the more accessible rear discharge upflush toilets, this Simple Project model stands out for its 19-inch bowl height, dual-flush water savings, and rear-outlet flexibility. It’s aimed at buyers who want a more comfortable seat height without giving up a clean, modern flush performance.

Best For: Seniors, taller users, and anyone with limited mobility who wants a higher toilet with rear drain compatibility.

Pros:

• 19-inch tall bowl makes sitting down and standing up easier
• Dual flush design helps reduce water use with 1.28 GPF full flush and 0.8 GPF half flush
• Rear discharge setup adds flexibility for specialized installations
• Slow-close seat helps keep operation quiet and comfortable

Cons:

• May be more toilet than needed if you only want a standard-height model
• Rear-discharge plumbing can still require careful installation planning
• Not the right pick if you need a compact or ultra-minimal design

Overall, this is a practical choice among rear discharge upflush toilets when comfort height matters most. It combines accessibility, quiet operation, and water savings in a setup that suits a range of rear-drain applications.

Best for Taller Users – Simple Project 19-Inch ADA Rear Outlet Toilet

If you’re comparing rear discharge upflush toilets, this model stands out for its 19-inch ADA-height bowl, rear outlet design, and included extension pipe for easier compatibility with back-discharge plumbing setups. The dual-flush 1/1.28 GPF design also gives it a more water-conscious profile than standard high-flow toilets.

Best For: Seniors, taller users, or anyone who wants a comfort-height rear outlet toilet with a soft-close seat.

Pros:

• 19-inch ADA height makes sitting and standing easier
• Dual-flush system helps reduce water use
• Soft-close seat adds comfort and quieter use
• Extension pipe included for more flexible installation

Cons:

• Rear outlet configuration may not fit every bathroom layout
• Not as compact as some space-saving toilet options

For buyers focused on comfort height and rear plumbing compatibility, this is a practical pick among rear discharge upflush toilets. It’s especially appealing if you want a taller seat, simple water-saving flushing, and a setup that feels more accessible day to day.

How We Picked the Best Rear Discharge Upflush Toilets

We focused on Rear Discharge Upflush Toilets that offer a useful mix of flushing performance, installation flexibility, and real-world comfort. Priority went to models with strong pump ratings, dual-flush or efficient water use, taller seating options, and features that make basement or retro-fit installs more manageable.

Quick Comparison

In this category, the main split is between macerating upflush systems and traditional rear outlet toilets. Macerating models are best when waste must travel upward or across longer distances, while rear outlet toilets are better when you already have wall-side rough-in plumbing. Tall, comfort-height designs are a strong fit for seniors and anyone who wants easier sitting and standing.

Key Buying Factors for Rear Discharge Upflush Toilets

Pump Power and Lift Capability

For macerating systems, pump wattage is only part of the story, but it still matters. Look for a system that can handle the vertical lift and horizontal run required in your space. If the toilet is going into a basement or remote bathroom, confirm the discharge distance and inlet options before buying.

Rough-In and Outlet Compatibility

For standard rear outlet toilets, make sure the wall outlet location matches the toilet’s rough-in and discharge setup. A mismatch can turn a simple install into a major plumbing project. Check whether the toilet uses a P-trap, rear discharge connection, or a specific extension pipe kit.

Height, Bowl Shape, and Comfort

Comfort-height and ADA-style models are easier for many adults to use, especially in shared bathrooms. Elongated bowls often feel more spacious, while round bowls may save room in compact layouts. Choose based on the user and the available floor space.

Flush Efficiency and Noise

Efficient flush ratings matter for water savings, but noise matters too, especially for macerator pumps in living areas or basement baths. If the bathroom is near bedrooms or a family room, look for quieter operation claims and solid user feedback about sound levels.

Who Should Buy Which Rear Discharge Upflush Toilets?

If you need to add a bathroom where gravity drainage is difficult, a macerating model is usually the best fit. If you already have wall discharge plumbing and want a straightforward replacement, a rear outlet toilet is the smarter choice. For households with seniors, mobility concerns, or a preference for easier use, tall comfort-height Rear Discharge Upflush Toilets are often the most practical option.

As a final check, match the toilet to your plumbing layout first, then compare height, flush style, and noise. That approach will narrow the field quickly and help you choose a model that performs well long term.