Last Updated : November 19, 2020

Kohler K-3889-0 Toilet Review

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The Kohler K-3889-0 Highline is a 10-inch rough-in water-saving toilet that brings a lot of features that people are searching for. The Kohler brand is always pushing better features like flushing power, bowl cleanliness, and toilet design. This Highline model is no different.

Product Overview

The Kohler Highline has efficient performance, water-conserving abilities, and a clean, simple design that provides style and function to your bathroom. One of its strongest attributes is its innovative 1.28-gallon flush setting. This water-conserving flush isn’t only better than the old three-gallon flushes; it also beats the more recent water-saving toilets as well. You can save an average of 16,500 gallons per year compared to a 3.5-gallon toilet, and that is going to save you a lot of money each year.

Kohler K-3889-0

  • 10in rough-in
  • Comfort Height Elongated Toilet bowl
  • 3-bolt Installation
  • Why we like it: The flush remains high-quality and powerful enough to get all your waste down the trap on one flush. Kohler’s design provides a canister flush valve system that eliminates clogs without wasting water. 

The water savings are attractive enough on their own accord, but what’s even better is the lowered flush capacity doesn’t sacrifice flushing power. The flush remains high-quality and powerful enough to get all your waste down the trap on one flush. Kohler’s design provides a canister flush valve system that eliminates clogs without wasting water. It’s also a Class Five toilet that provides incredible bulk waste flushing performance. Getting down all the waste in one flush also helps with bowl cleanliness.

Another feature many people seek when buying a toilet is an elongated toilet bowl. Elongated toilet bowls tend to look more elegant and are more comfortable to use. As long as you have the space in your bathroom to fit a toilet that is longer from front to back, it does add benefits to your bathroom usage. On top of the toilet bowl being elongated, it is also raised to be at a Comfort Height level. That means from floor to seat is between 17 to 19 inches, instead of the standard height of 15 inches. This adds comfort to anyone using this toilet, but it also means it can be an excellent choice for people who have more trouble sitting and standing up from the toilet.

Aside from all of these features, this toilet is a 10 inch rough in toilet. The supply lines are not included. For older style bathrooms or any bathroom needing a 10-inch rough-in instead of a 12 or 14 inch rough-in, this bathroom will fit your smaller setup while still providing the comfort and access you seek in a toilet. This is also a 3-bolt straightforward installation that comes with three pre-installed tank bolts. The toilet seat is not included with the Kohler K-3889-0. However, that means you can purchase your favorite toilet seat without spending the extra money upfront for a toilet seat that you may change anyway.

With all of these features combined into one toilet, this Kohler Highline toilet is our top pick when it comes to 10-inch rough in toilets with value. The benefits that this toilet bring are difficult to beat.

Water savings paired with powerful flushing performance

When you look at toilets that feature incredible water savings, it can commonly mean the flushing performance is diminished. However, that’s not the case with the Kohler Highline.

The 1.28GPF (gallons per flush) means you are saving water and money with every flush, and this toilet was WaterSense certified because of its tremendous water savings.

Not only do you save water with every flush, but the flushing power also remains the same high quality that Kohler provides on many of their toilet models. This is a Class Five toilet that provides extreme bulk waste flushing performance. Sometimes water-saving toilets compromise cleanliness because not all the waste is removed on one flush. Again, that’s not the case with the Kohler Highline. This toilet provides its Class Five canister flush valve pack that eliminates clogs and gets all your waste down on one flush. This saves you a lot of extra cleaning time.

Kohler shows that you don’t have to sacrifice one feature for another. You can have the best of both worlds with a powerful flush that also saves water.


● Sleek design - The toilet has a beautiful look to it.
● Comfort Height bowl - Sit on your toilet with ease with this raised height.
Elongated toilet bowl - Elongated bowls make for more comfortable sitting.
● Class Five bulk waste flushing performance - Get all your waste down with one flush.
WaterSense certified - At 1.28 GPF, this powerful toilet is also water efficient.


Seat not included - The toilet seat isn’t included, and you’ll have to buy your own.


Out of all the 10-inch rough-in toilets on the market, this Kohler Highline model is one of the best, if not the very best. It packs in every feature you are looking for in a 10-inch rough-in. With all of the features and benefits this toilet provides, the Kohler K-3889-0 could be the best choice.

Charles Cole

Hello. My name is Charles. I have been in the home improvement industry for a number of years. One of the most important renovations that home owners can make is a bathroom upgrade. Not only does it add significant value to your home, but it also costs a fair amount to do. Bathroom renovations are not frequently undertaken so choosing your sanitaryware can be source of enjoyment or regret for years to come. This is definitely the case for toilets. Read more about me and the site here.

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