How to Install an Upflush Toilet

Installing an upflush toilet is a practical solution for creating a bathroom in spaces where traditional plumbing might not be feasible. These toilets use a macerator pump to grind waste and pump it to the existing plumbing system, offering

How to Install an Upflush Toilet

convenience and versatility. Whether you’re adding a bathroom in a basement, garage, or another remote location, this guide will walk you through the process step-by-step process of how to install an upflush toilet.

Benefits of Installing an Upflush Toilet

Installing an upflush toilet comes with several advantages that make it an ideal choice for certain spaces. One of its biggest benefits is the ability to install a bathroom without extensive or expensive plumbing renovations, making it a cost-effective solution. This is particularly useful for basements, garages, or areas below the main sewer line where traditional plumbing systems would require complex construction.

Additionally, upflush toilets are easy to install and maintain, often requiring fewer tools and resources compared to standard toilets. They are also highly versatile, offering flexibility in bathroom placement, which can significantly increase the functionality and value of your home. Furthermore, these systems are eco-friendly, using less water per flush compared to traditional toilets, helping you conserve resources and lower utility bills.

Tools and Materials Needed

Before starting the installation of an upflush toilet, gather the following tools and materials to ensure a smooth process:

Tools:

  • Measuring tape 
  • Screwdriver (Phillips and flathead) 
  • Adjustable wrench 
  • Pipe cutter 
  • Drill with masonry bits 
  • Level 
  • Utility knife 

Materials

  • Upflush toilet system (including the macerator unit) 
  • PVC piping and connectors 
  • Pipe clamps and brackets 
  • Silicone sealant 
  • Teflon tape 
  • Water supply line 
  • Disinfectant and cleaning supplies (optional for cleanup)

Having all the necessary tools and materials on hand will save time and make the installation process more efficient.

10 Methods How to Install an Upflush Toilet

1. Standard Installation with a Macerating Pump

The most common method of installing an upflush toilet involves connecting the toilet unit to a macerating pump, which processes waste before sending it to the main sewer line. First, position the toilet in the desired location, ensuring that it is level. Connect the toilet outlet to the macerator using the provided piping, securing it with clamps. Then, connect the

Installing an
Upflush Toilet

macerator to the existing drain line using PVC pipes. Finally, plug the macerator into a power source and test the system by flushing to check for leaks and proper waste disposal. This method is ideal for most standard home installations.

2. Installing an Upflush Toilet in a Basement

When installing an upflush toilet in a basement, the key challenge is dealing with gravity and the distance to the main sewer line. Start by determining the location of the existing waste pipe and ensuring the macerator has enough power to pump waste that distance. Secure the toilet and connect the discharge pipe to the highest point before sloping it downward into the main drain. Make sure to install a vent pipe to prevent pressure buildup. Finally, test the system thoroughly to ensure proper operation, as basement installations require additional precautions against backflow.

3. Connecting to an Existing Bathroom Plumbing System

If you’re installing an upflush toilet in proximity to an existing bathroom, you can simplify the process by tapping into the existing plumbing. Locate the nearest drain pipe and use a Y-fitting to connect the macerator discharge pipe. If needed, install a check valve to prevent backflow. The advantage of this method is that it reduces the amount of new piping required, making installation faster and more cost-effective. Ensure that all connections are watertight and test the system to confirm smooth operation.

4. Wall-Mounted Upflush Toilet Installation

For a modern and space-saving design, a wall-mounted upflush toilet can be installed using an in-wall macerator system. This method involves securing a mounting frame within the wall, connecting the toilet to the concealed

Modern and
Space-saving Design

macerator, and running the discharge pipe through the wall to the main sewer line. Because this type of installation requires opening a wall, it’s best suited for new constructions or major renovations. The final step involves sealing the wall and installing the flush panel, creating a sleek and concealed toilet setup.

5. DIY Upflush Toilet Installation Without a Plumber

If you’re comfortable handling plumbing work, you can install an upflush toilet without hiring a professional. Begin by carefully reading the manufacturer’s instructions and gathering all necessary tools, including a wrench, PVC pipes, and pipe glue.

Position the toilet, attach the discharge and vent pipes, and ensure all connections are secure. The macerator needs to be plugged into an electrical outlet, so make sure there is an available power source nearby. Test the system by flushing multiple times and checking for leaks. While DIY installation saves money, ensure you comply with local plumbing codes.

6. Installing an Upflush Toilet in a Tiny Home or RV

For small spaces like tiny homes or RVs, installing an upflush toilet requires compact plumbing solutions. Choose a smaller macerating pump designed for limited spaces. Instead of running a long discharge pipe, use flexible tubing that can easily connect to the nearest waste outlet. Since mobility is a factor in RVs, secure all pipes with clamps to prevent movement. If space is extremely limited, consider a combined toilet and macerator unit for an all-in-one compact installation.

7. Battery-Operated Upflush Toilet Installation for Off-Grid Use

In off-grid locations or homes without reliable electricity, installing a battery-powered upflush toilet can be a viable solution. Choose a model with a rechargeable battery-operated macerator. Follow the standard installation process, ensuring the discharge pipe is properly secured to the drain system.

To optimize battery usage, consider installing a pressure-assisted flush system that reduces water and energy consumption. This method is particularly useful for cabins and remote areas where traditional plumbing is unavailable.

8. Installing an Upflush Toilet with Multiple Fixtures

Some homeowners opt for a macerator system that connects not just a toilet but also a sink, shower, or washing machine. To do this, use a macerating pump with multiple inlet ports. Connect each fixture to the corresponding inlet, ensuring that

Homeowners Opt
For a Macerator

water flows properly into the macerator. When installing multiple fixtures, follow manufacturer recommendations regarding pipe slope and venting to prevent drainage issues. This method is useful for creating a complete bathroom setup in basements or other areas with limited plumbing access.

9. Installing a Ventilation System for an Upflush Toilet

Proper ventilation is crucial when installing an upflush toilet, as the macerator generates air pressure that needs to be released. Most models require a vent pipe connected to the home’s existing vent system or a separate air admittance valve (AAV). Without proper venting, the system may develop unpleasant odors or experience reduced efficiency. To install the vent, attach PVC piping from the macerator to an external wall or existing vent stack. This method ensures optimal airflow and prevents unpleasant plumbing issues.

10. Professional Installation for Large-Scale or Commercial Use

For businesses, hotels, or multi-unit residences, installing an upflush toilet system often requires professional expertise. Large-scale installations involve connecting multiple upflush units to a central waste line, which demands precise planning to avoid clogging or overflow issues.

Professionals use industrial-strength macerators capable of handling heavy usage. They also install additional drainage solutions like sump pumps or backflow preventers to maintain system integrity. While this method is the most expensive, it ensures compliance with building codes and long-term reliability.

Things to Consider When Installing an Upflush Toilet

Local Plumbing Codes 

  Before starting the installation process, check your local plumbing codes and regulations. Some areas may have specific requirements for macerating systems, including venting, electrical connections, or discharge piping guidelines. Compliance ensures safety and prevents potential fines or complications during inspections.

Electrical Access 

  Most upflush toilets rely on macerator pumps that require electricity to operate. Make sure there is a nearby, grounded power outlet to plug in the unit. For off-grid or battery-powered models, ensure the battery is reliable and fully charged before use.

Water Pressure and Supply 

  An adequate water source with consistent pressure is essential to ensure proper flushing and operation. Inspect the

Adequate 
Water Source

water supply connection to make sure it meets the requirements of your chosen upflush toilet model.

Noise Levels 

  Macerator pumps can produce noticeable noise when in operation. If noise is a concern, consider selecting a model with quieter technology or installing soundproofing materials around the macerator unit to minimize disruption.

Type of Macerator Pump 

  The type of macerator pump you choose should align with your specific needs. For instance, a compact model is better suited for tight spaces, while a high-capacity pump is necessary for installations involving multiple fixtures or commercial use.

Conclusion

Installing an upflush toilet offers a practical way to add a bathroom in locations where traditional plumbing isn’t an option. Whether you’re setting it up in a basement, tiny home, or off-grid cabin, choosing the right installation method is key. From simple DIY setups to professional commercial installations, each approach ensures functionality, efficiency, and compliance with plumbing standards. Before starting the installation, always check local codes, ensure proper venting, and test the system to prevent future issues. Thanks for reading, and we hope this has given you some inspiration on how to install an upflush toilet!

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Terry Alexander

Hi, I am Terry. I started my professional life as a handyman and did a lot of external and internal repair of home and plumbing support. From my childhood, my passion for home repair and fixtures created an opportuinity to pursue a career in HVAC and plumbing industry. As I gained years of knowledge and my love for plumbing grew overtime, I thought to document my journey so that I could help others who ran into daily problems in their home repair. Hopefully it will help you fix those pesky home repair and plumbing problems that always seem to happen at the worst time possible!

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