How Does a Macerator Toilet Work?

Do you have a space that would benefit from having a toilet, but you don’t have the money to install a whole new plumbing system? If you said yes, then you should consider a macerator toilet. But how does a macerator toilet work?

In this article, we’re going to answer the question, “How does a macerator toilet work?” So, keep reading to learn more about macerator toilets and how they differ from a conventional toilet.

A macerator toilet is an upflush toilet system. It sends the toilet’s waste to a unit located behind the toilet – either a container in the wall or a large container behind the toilet. High-powered blades then liquefy waste before it’s then pumped out of the unit through a pipe that’s been connected to the main drain.

How Does a Macerator Toilet Work

For more information on how does a macerator toilet work, keep reading.

How to Install a Macerator Toilet

Before you start installing a macerator toilet, you need to have access to a couple of things:

  • Venting source
  • Electricity source with a GFI breaker
  • Discharge pipe with a range between 3/4- to 1-inch
  • Easy access to a water supply

If you’re experienced in plumbing jobs, you can install a macerator toilet by yourself. If not, then you can easily hire a plumber to help you out.

Installing a macerating toilet is said to be easier than installing a standard American toilet. You just need to follow the steps below:

  • Connect the discharge pipe first. Make sure that the sizing of the discharge pipe is correct. If you need to add turns to the discharge pipe, you need to use 45-degree elbows instead of 90-degree elbows. You also need to make sure that it’s properly vented.
  • Connect the toilet tank to your water supply to remove the waste.
  • Plug the macerating pump into the power supply, make sure that you use a GFI outlet and a 15-amp electrical cord.
  • You then need to vent the macerating pump into your home’s venting system so air can move through the pump area. You don’t need to use your home’s venting system, but if you make a vent system, you need to make sure that it’s up to code.

The last thing you need to do is make sure that the pipes are all protected from the cold, so they don’t freeze, and they are supported and connected properly.

How Does a Macerator Toilet Work?

A standard American toilet uses a drain line below the level of waste, so it uses gravity to pull the waste and waste water down and out of the toilet.

A macerator toilet is an upflush system that sends waste to a container in the wall or behind the unit. Inside the container, high-powered macerator blade works to liquefy the waste before it’s then pumped from the unit using a pipe that’s connected to the main drain line of your home.

They tend to be more expensive than a standard American toilet but are less expensive than building and creating a brand-new plumbing system to have a toilet in your home.

Macerator toilets aren’t recommended to be used as the main toilet system for a large home or family. This is because the pump can become overworked and ultimately fail if used every day, all day long, by several people.

Where Can I Use a Macerator Toilet?

If you’re in a part of your house that’s far away from the main drain line of your plumbing system, a macerator toilet can be a lifesaver. They aren’t too expensive and can be installed without spending a lot of money on a plumbing overhaul to have a second toilet in your home.

Macerator toilets work best in homesteads and cabins off the grid, workshops located far away from the home, basement conversions, and other unique situations where having a toilet would be beneficial.

The power of the toilet pump will be determined by the range of the pipe that’s needed to reach the main drainpipe. For example, the macerator toilet needs to be located within 10-15 feet of vertical lift and 100-150 feet of horizontal run. So, you need to make sure that the toilet pump will be able to handle the range; otherwise, it won’t be as effective of a choice.


A macerator toilet is a great solution if you need a bathroom in a space of your home that doesn’t have one, and you don’t want to create a brand-new plumbing system. Of course, they’re more expensive than a standard American toilet, but they are incredibly beneficial and cost-effective. Additionally, installing a macerator toilet can be done by anyone who understands plumbing!

Frequently Asked Questions (FAQs)

Where Does the Waste from a Macerator Go?

Macerator toilets are designed to send waste through your main septic line, which means that it will go into a septic tank or a city sewer, depending on where you live.

How Long Do Macerating Toilets Last?

Typically, macerator toilets will last anywhere between 10-15 years and sometimes longer if they’re cared for. However, most macerator toilets have been tested to last for around 50,000 cycles.

What Can You Not Put Down a Macerator Toilet?

You should treat your macerator toilet as you would any other toilet and avoid letting anything other than toilet paper and waste go through the system. That means you should avoid putting these things into the macerator toilet:

  • An excessive amount of toilet paper
  • Food
  • Toys
  • Baby wipes
  • Flushable wipes
  • Tampons
  • Sanitary towels

To protect your macerator toilet and your plumbing, make sure that nothing goes down your toilet that shouldn’t be there. Doing this will ensure that your macerating unit lasts for years to come.

How Do You Clean a Macerator Toilet?

  • To clean a macerating toilet, put 1-2.5 liters of toilet cleaner and macerator descaler into the toilet bowl.
  • Turn on the macerator pump for a few seconds to allow the descaler to enter the macerator.
  • Then turn off the macerator and allow the descaler and toilet cleaner to work for around two hours. Avoid flushing the toilet during this time.
  • After the two hours are up, flush the toilet to rinse.

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