Gerber Ultra Flush UL-20-318 toilet Review

Gerber Ultra Flush UL-20-318 toilet

A toilet is something we use every day, but we rarely think about it until it starts causing problems. Slow flushing, constant clogs, and weak performance can quickly turn into a daily frustration.

That’s where pressure-assist toilets come in.

The Gerber Ultra Flush UL-20-318 is built to solve those problems. It uses a powerful pressure-assisted flushing system designed to move waste quickly and reduce clogging. Many plumbers recommend this type of toilet for homes where regular toilets struggle to keep up.

But is it really worth the money? And does it perform as well as people say?

In this detailed review, we’ll look at how the Gerber Ultra Flush works, what features it offers, and whether it’s the right toilet for your home.

This is Best For:

  • Families who deal with frequent clogs
  • Homes that want strong flushing power
  • Bathrooms that need a durable toilet

This is Not Ideal For:

  • People who prefer very quiet bathrooms
  • Small apartments where noise travels easily

Gerber Ultra Flush UL-20-318 toilet

Specifications:

  • 17″ Tall, ErgoHeight ADA Elongated Bowl for added comfort and ease of seating
  • Chrome, Metal Tank Lever
  • Large, 2″ fully glazed trap way for clog-free waste removal
  • Dual fed siphon jets increases the speed and power of the flush, for a quick and clean bowl every time
  • Generous water surface to thoroughly rinse the bowl with each flush
  • 1.1 gpf (4 Lpf), saves over 30% more water per year (vs 1.6 gpf/6 Lpf toilet)
  • Two-piece toilet
  • 12″ Rough-in
  • WaterSense® certified, Ultra High-Efficiency Toilet (UHET) to save over 30% more water (vs 1.6 gpf/6 Lpf toilet) and money!
  • 10-year warranty on Pressure Vessel, Limited Lifetime Warranty on Vitreous China
  • Double nut, multi-point tank-to-bowl mounting system for easy installation without breakage
  • Non-Sweating Insulated Tank
  • Toilet seat not included

Resists soil and odor

   Yes

Resists drain line clogs   

   No

Comfort height

   Yes

Type

   Pressure

Gallons per flush

     1.0

What Makes the Gerber Ultra Flush Different?

Many toilets look similar on the outside. What really matters is how they work inside the tank.

The Gerber Ultra Flush stands out because it uses pressure-assist technology instead of gravity alone.

Let’s break down its key features.

Pressure-Assist Flushing System

The most important part of this toilet is the flushing system.

Inside the tank is a sealed pressure vessel. When the tank fills with water, air pressure builds inside the vessel.

When you flush, the compressed air pushes water into the bowl with strong force.

This creates a fast and powerful flush that clears waste quickly.

Compared to traditional toilets, pressure-assist systems are known for:

  • stronger flushing power
  • fewer clogs
  • faster bowl cleaning

This type of system is commonly used in commercial bathrooms like restaurants and offices because it works reliably even with heavy use.

Comfort Height Bowl

The Gerber Ultra Flush comes with an ErgoHeight bowl.

This means the seat height is around 17 inches from the floor, which is similar to the height of a chair.

Many people find this height more comfortable because it’s easier to sit down and stand up.

Comfort height toilets are also helpful for:

  • taller adults
  • seniors
  • people with joint or mobility issues

The height meets ADA comfort standards, which makes it a practical choice for many households.

Large Glazed Trapway

Another important feature is the 2-inch fully glazed trapway.

The trapway is the curved path that waste travels through when you flush.

A larger, smoother trapway allows waste to move through more easily.

Because the trapway is glazed, the surface is smoother and waste is less likely to stick.

This simple design detail helps reduce clogging.

Dual Siphon Jets for Better Cleaning

The toilet also includes dual fed siphon jets.

These jets direct water into the bowl during the flush. They help push waste toward the trapway and improve bowl cleaning.

The result is a stronger and more effective flush compared to many standard toilets.

Insulated Tank Helps Prevent Condensation

In humid climates, toilet tanks can sometimes collect condensation. This can lead to water droplets forming on the outside of the tank.

The Gerber Ultra Flush includes an insulated tank lining that helps prevent this issue.

It’s a small feature, but it can help keep the bathroom cleaner and prevent moisture problems.

Flushing Performance

Flush power is the most important part of any toilet.

The Gerber Ultra Flush is designed specifically to deliver strong performance while using less water.

Strong Waste Removal

The pressure-assist system pushes water quickly through the bowl, which helps remove waste in a single flush.

This reduces the need for multiple flushes.

Lower Risk of Clogs

Clogs are one of the most common toilet problems.

Because of the strong flush and smooth trapway, this toilet handles waste more effectively than many traditional gravity toilets.

Many homeowners choose pressure-assist toilets specifically for this reason.

Faster Bowl Clearing

Another benefit is the speed of the flush.

Water moves through the bowl quickly, which clears the bowl faster and reduces the chance of leftover waste.

Pros and Cons

Every toilet has strengths and weaknesses.

Here’s a simple breakdown.

Pros

  • Very powerful flush
  • Uses only 1 gallon of water
  • Comfortable ADA height
  • Good clog resistance
  • Durable construction

Cons

  • Flush is louder than standard toilets
  • Toilet seat is usually sold separately
  • Pressure tanks may require maintenance after many years

Real User Feedback

Looking at real user experiences can help give a clearer picture.

Many homeowners say the Gerber Ultra Flush performs very well and rarely clogs.

Plumbers often recommend pressure-assist toilets like this for homes that have struggled with weak flushing toilets.

However, some users mention that the flush sound is stronger than traditional toilets. That’s normal for pressure-assist systems.

Overall, most feedback focuses on strong performance and reliability.

Installation Overview

The Gerber Ultra Flush is designed for a standard 12-inch rough-in, which is the most common setup in modern bathrooms.

The toilet has a two-piece design, meaning the bowl and tank are installed separately.

Basic installation steps include:

  1. Remove the old toilet
  2. Place a new wax ring
  3. Install the toilet bowl
  4. Attach the tank
  5. Connect the water supply

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Many homeowners install it themselves, but hiring a plumber can make the process easier if you’re unsure.

Gerber Ultra Flush vs Traditional Toilets

How does it compare with a regular gravity toilet?

Feature Pressure Assist Gravity Toilet
Flush Power Very strong Moderate
Noise Level Louder Quiet
Clog Resistance High Moderate
Water Efficiency High Moderate

Pressure-assist toilets are usually chosen for performance, while gravity toilets are chosen for quiet operation.

Who Should Buy the Gerber Ultra Flush UL-20-318?

This toilet is a great choice for people who want reliable flushing power.

It works well for:

  • large families
  • busy bathrooms
  • homes with frequent clog problems

If your current toilet struggles with waste removal, a pressure-assist model like this can make a big difference.

Frequently Asked Questions

Is the Gerber Ultra Flush loud?

Yes, it is louder than traditional gravity toilets. The pressure-assist system creates a stronger flush sound.

Does this toilet clog easily?

No. The strong flush and smooth trapway are designed to reduce clogging.

Does the toilet come with a seat?

In many cases, the seat is sold separately. Always check the product listing before buying.

Is it water efficient?

Yes. The toilet uses about 1 gallon of water per flush, which is lower than many older toilets.

Final Thoughts

The Gerber Ultra Flush UL-20-318 is built for one main purpose: powerful flushing performance.

With its pressure-assist system, comfort height bowl, and clog-resistant design, it offers reliable performance for busy households.

It may not be the quietest toilet available, but the strong flushing power makes it a dependable choice for people who want fewer clogs and better performance.

If your current toilet struggles to keep up, upgrading to a pressure-assist model like the Gerber Ultra Flush can make everyday life easier.