How Does an Upflush Toilet Work?

This page will breakdown how the upflush toilet system works and give you a simple overview of the quick and painless, DIY install process. 

Although the video uses the classic SaniPLUS as the example, today we often recommend the SaniACCESS 3 for most residential applications, and the SaniBEST for commercial applications or rental properties. Or, take our product selector quiz to help you find the right product to fit your objective.
First let's see how the Saniflo upflush toilet system works with this video.

As you can see, an upflush toilet has been engineered to eliminate installing expensive plumbing. Yet, while their interiors are hardworking machinery, their exteriors are a fashionable complement to any decor.

The main difference of upflush toilets from standard fixtures is the discharge system, whose key components are a macerator/pump and a small-diameter pipe. The powerful macerator has a rotating blade that shreds and grinds solid material like human waste and toilet paper. When mixed with flushing water, solid material changes to a fine slurry which moves easily through a narrow pipe upward. A quiet electric-powered pump moves the fine slurry upward under pressure. The small-diameter discharge pipe (as small as 3/4" across), solves many structural problems as it can be run virtually anywhere. The fine slurry moves easily through this pipe to the normal sewage system, septic tank or holding tank.

This is what's happening on the inside of the Saniflo pump:

How the Saniflo macerating pump works

And these are the 4 connections you need to make on the outside:


  1. The macerating/pump is connected to the spigot of a horizontal outlet toilet. 
  2. The toilet tank is connected to the water supply. 
  3. The macerating/pump is connected to the small diameter discharge pipe work. 
  4. The macerating/pump is connected to the electrical supply. 

Then optionally connect the discharge pipes from the sink, shower and/or bath.

What do you need to install an upflush toilet?

You only need four basic connections:

  1. A top rated SaniFlo upflush toilet pump system
  2. A supply of water
  3. A small discharge pipe (3/4 to 1")
  4. A source of electricity with a GFI breaker.

and someone skilled in installing plumbing/venting.

You don't need to drop a ceiling!
You don't need custom equipment!
You don't need to break up the floor! 

A plumber can install an upflush toilet in hours or a complete bathroom in just a day at a fraction of the cost of a traditional full bathroom construction.

This is a high level view. For detailed instructions on how to install an upflush toilet, check out our Saniflo Installation page.


Will an upflush toilet work for my project?

If you want to know if an upflush system will work for your specific need, just ask us

We will let you know if a Saniflo system will work for you and which model we recommend. You can also check out our product selector tool to help you find the right product for you. Once your order is placed we can go into specific details on your particular installation.

Remember purchasing from us you will get a real person, every time you call, 7 days a week with your questions. You will never have to be concerned you will get wrong information or not getting a response. Our customer service and knowledge has made us known to the experts like the Bob Vila Show and The New York Times.

Want the full story behind the what, how, and why of Upflush Toilets?  Click here to learn more. Or,

Click Here to Check Out the Full Saniflo Line Up!