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Understanding Toilet Flushing Systems: A Homeowner’s Guide

If your toilet isn’t flushing quite right, it helps to understand what’s going on inside the tank. Knowing which type of toilet flushing system you have can make troubleshooting easier, help you talk confidently with a plumber, and even guide you when it’s time to replace your toilet.

In this guide, we’ll walk through the three main types of toilet flushing systems you’re likely to see in homes and businesses around the St. Paul and Minneapolis area: tank-style toilets, flushometer-style toilets, and the Flushmate pressure-assisted system.

Tank-Style Toilets (Most Common in Homes)

Tank-style toilets are the classic toilets you see in most Minnesota homes.

  • Water sits in the tank behind the bowl.

  • When you push the handle (trip lever), a valve opens, and the stored water rushes into the bowl.

  • Gravity pulls the water and waste down through the drain.

Because tank-style toilets are simple and reliable, they’re usually easy to repair and maintain. Many newer models are also designed to use less water per flush, which helps lower your water bill over time.

Flushometer-Style Toilets (Often in Commercial Buildings)

Flushometer-style toilets are what you usually see in public restrooms, restaurants, and other commercial spaces.

Instead of holding water in a tank, these systems use the building’s water pressure (and sometimes compressed air) to send a strong, fast burst of water into the bowl. That’s what creates the loud “whoosh” you hear when they flush.

Flushometer toilets are built for heavy use and quick recovery between flushes, which makes them ideal for high-traffic bathrooms in businesses and commercial buildings.

Flushmate: A Hybrid, Pressure-Assisted System

Flushmate is a pressure-assisted flushing system that combines features of both tank-style and flushometer-style toilets.

A Flushmate toilet still has a tank on the back, but if you lift the lid, you won’t see a tank full of water. Instead, you’ll see a large black plastic inner tank. That sealed inner tank fills with water and traps air, building up pressure inside. When you flush, that pressurized air and water work together to create a powerful, efficient flush while using less water than many older toilets.

Flushmate systems are used in both residential and commercial bathrooms because they:

  • Help reduce clogs and double flushing

  • Use less water per flush than many traditional toilets

  • Provide a stronger, cleaner flush

If you open your toilet tank and see that big black unit instead of standing water, you likely have a Flushmate-equipped toilet.

Maintenance: Why Your Flush Type Matters

All toilets, no matter which flushing system they use, will eventually need maintenance. Internal parts wear out, seals fail, and valves can stick or leak over time. Each flushing system—tank-style, flushometer-style, and Flushmate—has its own unique parts and repair methods.

The plumbers at St Paul Pipeworks work with all of these systems every day. We can quickly identify which type of flushing mechanism your toilet uses and carry the right parts on our trucks, so most repairs can be completed in a single visit.

If you’re noticing any of these issues, it’s a good idea to call a professional plumber:

  • Weak or incomplete flushes

  • Constant running or refilling

  • Leaks around the base or tank

  • Frequent clogs or the need to flush twice

Taking care of toilet problems early can help you avoid water waste, higher utility bills, and damage to your home.

Need a Toilet Repair in St. Paul or Minneapolis?

If you’re unsure which toilet flushing system you have—or your toilet just isn’t working the way it should—St Paul Pipeworks is here to help. We’re a full-service plumbing company serving homeowners throughout the St. Paul and Minneapolis metro area with expert toilet repair, replacement, and bathroom plumbing services.

Give St Paul Pipeworks a call today to schedule a visit from one of our licensed plumbers and get your toilet flushing the way it should again.

Yours truly,
Matthew Dettwiler
Social Media Manager, St Paul Pipeworks

FAQs: Toilet Flushing Systems

What are the main types of toilet flushing systems?

The two most common flushing systems are tank-style toilets, found in most homes, and flushometer-style toilets, usually found in commercial restrooms. Flushmate is a hybrid, pressure-assisted option used in both.

How does a tank-style toilet work?

A tank-style toilet stores water in the tank. When you press the handle, water flows into the bowl and gravity carries the waste down the drain.

What makes a flushometer-style toilet different?

Flushometer toilets use water pressure (and sometimes compressed air) instead of a tank of stored water, delivering a strong, fast flush often heard as a “whoosh.”

What is a Flushmate system?

Flushmate is a pressure-assisted system inside the toilet tank. It uses a sealed, pressurized inner tank to deliver a powerful flush while using less water than many traditional toilets.

Why should I know which flushing system I have?

Different flushing systems use different parts, so knowing your type helps your plumber diagnose issues faster and make the right repair, saving you time, water, and money.

Toilet Flushing Actions: Ask a plumber…