Best Flushing Toilets
Kohler San Souci

Feature Review and Common Issue With the Kohler San Souci Toilet

Kohler San SouciKohler offers a broader range of one-piece toilets. Among them stands the Kohler San Souci one-piece toilet. This commode is quite different from the other Kohler toilet models as it is not only uniquely designed but as well as features low-profile construction.

The peculiar look of this commercial toilet unit makes it even more attractive to the eye. It doesn’t matter if you want to install it in the office, at home, or even for commercial use. It still stands out. Besides, the toilet is also comfortable to use and has enough sitting space for different users.

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Our Review: Is the Kohler San Souci Toilet Really Worth It?

It also comes with the AquaPiston flushing system, even though the canister in this system is a bit smaller than in other Kohler toilets with the same flush technology. Unlike Kohler Persuade chair-height toilets, this commode comes with a toilet seat; hence you don’t have to buy one separately. If you’ve been admiring this toilet from a distance, here is a full Kohler San Souci review to help you make up your mind.

Advantages: Why buy a Kohler San Souci toilet?

  • Elegant low-profile design
  • A quiet-close seat prevents slamming.
  • KOHLER K 4007 0 San Souci toilet has Sturdy construction
  • Concealed trapway for ease of cleaning
  • Powerful and reliable AquaPiston flushing technology
  • Comfort height accommodates people of different ages
  • One-piece design is simple to maintain
  • High-efficiency toilet
  • The elongated bowl provides more comfort
  • One-year warranty

What are the disadvantages?

  • The toilet is not very powerful when compared to Kohler toilets like Santa Rosa with the same flushing technology.
  • The flush lever is not very durable, as many people have aired concerns about it.
  • The toilet is quite heavy and difficult to install
  • The Flushing system is loudy
  • Tall people have to blend a little more while using this toilet

Kohler San Souci K-5172-0 Comfort Height Toilet Specifications:

Color: White
Bowl Height: Standard height
Material: Vitreous China
Shape: Round
Water Consumption: 1.28 gallons of water per flush
Piece: 1-Piece
Bowl Height with Seat: 17-in
Installation Method: Floor mounted
Flush Technology: Gravity-fed
Seat Secure: Yes
Flush Type: Single
Flush Lever Location: Left side
Certification: EPA Approved
Rough-in: 12 inches
Dimensions (LxWxH): 27.5 x 16.37  x 25.25 inches
Weight: Approximately 92 lbs
Trapway Design: Concealed
Water Surface Area: 11.5 inches x 9.5 inches
Seat Included: Yes
Warranty: One-Year Limited Warranty
Price: Kohler San Souci Toilet ReviewsCheck Today’s Price

Summary of content

Is China Construction durable?

  • Last 10+ years
  • Color variations & attractive design

A toilet is not something that you intend to use for a week, a month, or a year, but it is something that you intend to use for at least ten years. That’s the reason why you need a sturdy and reliable toilet, such as the Kohler San Souci. Made of China material, this unit will serve you for at least ten years if well-maintained. The good news is that many users highly recommend Kohler toilets for their durability and performance.

Related article: Features Comparison of Popular Kohler and American Standard Toilets

Aside from the durable construction, the toilet comes with different colors to choose from. To be precise, the unit has ten colors that users have to pick from. So, you can select a color that will match well with your bathroom theme.

Skirted One-piece Design

  • Require small space
  • Easy to maintain

Not all Kohler San Souci toilet models feature a skirted design. But for, the Kohler San Souci K-5172-0 comes with a concealed trapway that makes cleaning easy and quick. You won’t have to waste time by scrubbing the trapway corners that most traditional toilets come with.

The Kohler San Souci is a one-piece toilet. In short, you will have an easy time cleaning the unit than a two-piece Kohler Memoirs toilet. This is because it doesn’t come with a gap between the bowl and the tank. This gap is a breeding ground for mold and bacteria. Also, things like leakage won’t bother you as the tank and bowl are integrated into one unit.
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Elongated bowl

  • More siting space
  • Comfort height

As you already know, one-piece toilets usually offer more sitting space than two-piece toilets. Apart from being a one-piece commode, this toilet also has an elongated bowl. Therefore, you will have additional sitting space when compared to a round bowl design. Besides, its unique bowl design offers an extra sitting area when compared to other elongated bowl toilets.

If you have people of all ages in the house, the best thing that you can do is to ensure that you install a comfortable toilet that every individual can use. The Kohler San Souci is of a comfort or chair height. As a result, the people in the house will have a simple time sitting down or standing up from the toilet. So it will deliver more comfort than the KOHLER K-3609-G9 Cimarron elongated 1.28 GPF toilet.

Is AquaPiston flush technology any good?

  • No clogging issue
  • Powerful flush

The primary function of the toilet is to rinse the bowl efficiently after every use. The Kohler San Souci is not a letdown in this area as it boasts of a powerful AquaPiston flushing mechanism. This mechanism works by water entering the canister from all angles to deliver a powerful flush without clogs. So, you don’t need to flush the toilet twice.

Water-efficient toilet

  • 1.28 GPF
  • Can be installed in any states

Besides featuring the powerful AquaPiston flush technology, the commode also uses only 1.28 gallons per flush. As a result, it is a high-efficiency toilet. So it consumes less water than a Kohler Wellworth round bowl toilet. Additionally, the toilet qualifies for rebates in some states and can be installed anywhere in the states. This includes States like Colorado and California with stringent rules.

Quiet-close seat included

  • Quiet in operation
  • Seat included

Installing this particular unit is not a problem at all. The procedure is the same as that of a standard toilet. On top of that, it has a toilet seat, so you don’t have to go looking for one. However, you will need the help of another person as the commode is quite substantial.

What’s more, the included toilet seat is quiet in operation. This is the K-4008 revealing a quiet-close seat with a tight grip. So, you can forget about banging the toilet at night and distracting the baby and other people in your home.

Related article: Check the technical specification of advanced Kohler Veil toilet

One-year warranty

Despite Kohler being a reliable brand, some people feel that the guarantee could’ve been better. The manufacturer gives a one-year warranty, but this shouldn’t be a big deal as the toilet is sturdy and reliable. You have already got the in-depth technical specification of this product through our San Souci toilet review. Now let’s check the advantages and disadvantages of this toilet.

Fix common problems with the Kohler San Souci Toilet:

The toilet flushes slowly: To solve this issue, you have to adjust the water level in the tank. Then shut off the water supply line and clear the obstruction from the trapway, jet, or waste line.

The Kohler San Souci toilet stopped flushing: The chain attached to the trip lever may not be working properly. So adjust and reconnect the chain to get rid of excessive slack.

San Souci toilet makes loud noise: To make your toilet operation quiet, check the water pressure and clear dirt from the valve head.

Toilet tank not filling properly: If the San Souci toilet tank takes too much time to fill, then you need to check the supply line, valve head, and inlet. If any blockage is found, clear it immediately.

Kohler San Souci vs Kohler Santa Rosa

Comparison Kohler San Souci Kohler Santa Rosa
Toilet Bowl Height: 15.25 inch 16.5 inch
Depth: 25.625 inch 27.75 inch
Height: 24.25 inch 28.187 inch
Water Consumption: 1.28 GPF 1.28 GPF
Bowl Shape: Round Elongated
Not Ideal For: Tall people Kids
price: Medium Low

An Alternative of Kohler San Souci Toilet:

Kohler San Raphael ToiletKohler San Raphael

  • Dimensions: 24 x 20.50 x 29 inches
  • Weight: 118 Pounds
  • Color: White
  • Type: One Piece
  • Trap Passageway: 2-1/16 inches
  • Water Consumption: 1.28 GPF
  • Water Surface Size: 11-1/2 x 7 inches
  • Rough-in: 12 inches
  • Toilet Type: Floor-mount
  • Bowl Shape: Elongated
  • Flush Type: Siphon jet
  • Lever Position: Left
  • Waste Outlet: Floor
  • Template: 1231981-7, required, included


The Kohler San Souci is a uniquely designed and beautiful commode that will change the look of your bathroom. This compact toilet will easily fit in a small bathroom and large washrooms because of its compact design. Additionally, you will love the comfort that it offers, and it can accommodate people of different ages. It also features the powerful AquaPiston flush technology, which is not only powerful but as well as reliable in performance.

Since the unit comes with a concealed trapway, cleaning is made easy. What’s more, you have lots of colors to choose from; thus, you can pick a toilet that complements your bathroom theme. Even though the Kohler San Souci is slightly costly, it is worth every penny spent on it. I hope you have got a clear idea after reading our Kohler San Souci reviews.


What to consider when choosing a toilet?

If you want to install the best toilet for your bathroom, you need to consider several things. These include the space for installation, the height of the toilet, type of bowl, customer reviews, gallons per flush the toilet uses, type of flush system, and type of commode. These factors will help you to determine whether the toilet is right for you or not.

Why should I choose a one-piece toilet over a two-piece toilet?

The toilets have their advantages and disadvantages, but the benefits of one-piece toilets outweigh those of two-piece toilets. A one-piece makes cleaning and maintenance easy, while a two-piece toilet is quite tricky to clean and maintain. Also, a one-piece toilet features a more compact design than a two-piece unit as the tank and bowl are incorporated into one unit. Additionally, one-piece toilets are more comfortable than two-piece toilets because of their size.

Why is it crucial to choose a toilet with a left-hand chrome trip lever?

The Americans with Disabilities Act requires toilets to be installed in public restrooms to have the trip lever located on the left-hand side. This is convenient for all users as they can easily access the toilet with their right hand without getting up on the commode. So, whether it is an adult or a disabled person, flushing the toilet won’t be an issue for them.

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Hi, I am Jose S. Franz. Currently, I am working as a professional plumber, and our team offers various plumbing services at an affordable price. After my college education, I completed a vocational certification course in plumbing systems and worked with several construction companies. Since then, I have fixed lots of different toilet models, from older to the latest versions. So I have more than 22 years of experience installing plumbing systems and toilets in both residential and commercial buildings.

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