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Internet # 307908573

Model # K-78253-0

Store SKU # 1003951329

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Highline Arc 12 in. Rough In 2-Piece 1.28 GFP Single Flush Round Chair Height Toilet in White with Soft Close Seat

$189.00
Was $229.00
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  • Made of vitreous, ADA comfort height, 1.28 GPF canister flush
  • Class Five canister provides powerful and effective flush
  • Soft close toilet seat, wax ring, and hardware included
  • View More Details
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Product Details

About This Product

Trusted for years by professionals, Highline toilets are KOHLER bestselling toilet family. A brilliant blend of style and water efficiency, this Highline Arc toilet is distinguished by an elegant flared tank. Coupled with KOHLER powerful canister flush valve, there's no sacrificing performance for design. An innovative 1.28 Gal. flush setting provides significant water savings of up to 16,500 Gal. per year, compared to an old 3.5 Gal. toilet. This Complete Solution package includes everything necessary for installation and is available exclusively at The Home Depot.

Highlights

  • 2-piece toilet
  • Round-front bowl offers an ideal solution for smaller baths and powder rooms
  • Comfort height feature offers chair-height seating that makes sitting down and standing up easier for most adults
  • 1.28 Gallons Per Flush (GPF)
  • Standard left-hand polished chrome trip lever included
  • Complete solution toilets provide everything you need in 1 box, including bowl, tank, slow-close toilet seat, cover, wax ring and floor hardware
  • Single-flush gravity uses the force of gravity and a precision-engineered tank, bowl and trap way to create a strong siphon during flushing
  • Class 5 flushing technology offers virtually plug-free performance and rinsing power for a clean bowl
  • Standard 12 in. rough-in
  • 3-bolt installation
  • Supply line not included
  • WaterSense
  • Click here to shop for more Kohler products
  • Return Policy

Product Information

Internet # 307908573

Model # K-78253-0

Store SKU # 1003951329

Specifications

Dimensions: H 30.375 in, W 18.0625 in, D 27.75 in

Dimensions

Product Depth (in.)

27.75 in

Product Height (in.)

30.375 in

Product Width (in.)

18.0625 in

Details

Bowl Height

Chair Height

Bowl/Seat Shape

Round

Color Family

White

Color/Finish

White

Commercial / Residential

Residential

Features

No Additional Features

Flushing Technology

Gravity Fed

Flushing Type

Single Flush

Gallons Per Flush

Single Flush: 1.28

Handle Location

Left

Included

Complete Kit

Material

Vitreous China

Returnable

90-Day

Rough In Size

12 inch Rough In

Toilet Type

Two-Piece

Trapway Diameter (in.)

2.125 in.

Trip Lever Location

Left Front

Warranty / Certifications

Certifications and Listings

ADA Compliant, ASME Certified, CSA Certified, EPA Approved

Manufacturer Warranty

Lifetime Limited Warranty

Questions & Answers

We bought 3 of these toilets and they work great. Is there an adjustment to minimize the amount of water flushed? When flushed and the water empties, there is air that gets sucked into the drain pipe that causes our nearby tub to bubble when it’s empty.
ByApr 19, 2026
0 Answer | 
Answer This Question

Is this toilet tank insulated to reduce sweating?
ByApr 19, 2026
0 Answer | 
Answer This Question

How do you change the toilet handle? I want to put a black handle on the white toilet. Thank you
ByApr 18, 2026
1 Answer | 
Answer This Question

Take lid off tank, unscrew handle, remove, screw on new handle, replace tank lid, flush.

By|Apr 19, 2026


    How tall is the extra tall seat
    ByApr 18, 2026
    1 Answer | 
    Answer This Question

    Hello, this is Sarah with Kohler Customer Service. I am glad to address your question. The K-78279 Highline Arc toilet features a Comfort Height bowl that measures 16.5" from the floor to the rim of the bowl. We suggest looking at the Kohler Tall toilets which feature a 19" bowl height. Thank you for choosing Kohler.

    By|Apr 19, 2026


      Does the toilet (Kohler K-78253-0, Store SKU # 1003951329) have skirted trapway?
      ByApr 17, 2026
      1 Answer | 
      Answer This Question

      JoJo, this is Sarah with Kohler Customer Service. I am glad to address your question. This toilet has an exposed trapway. Thank you for choosing Kohler.

      By|Apr 19, 2026


        How high is “chair height?”
        ByApr 17, 2026
        1 Answer | 
        Answer This Question

        Hi Terri, my name is Meli with Kohler Co. I am happy to assist with your question. The Highline Arc K-78279 has a toilet bowl height of 16-1/2". Thank you for choosing Kohler.

        By|Apr 17, 2026


          how high is the seat?
          ByApr 16, 2026
          1 Answer | 
          Answer This Question

          Hello, my name is Jessica with Kohler Customer Service. I am happy to assist with your inquiry. The height of the bowl packaged with K-78279-0 measures 16-1/2" from the floor to the top of the bowl without the seat installed. The seat adds 1-15/16" of height to the bowl. The following link is to the specification sheet showing this on page 3 as well: https://tinyurl.com/37bke9kr. Thank you for choosing Kohler.

          By|Apr 16, 2026


            Are bone and biscuit the same color
            ByApr 14, 2026
            1 Answer | 
            Answer This Question

            Hello Steve, this is Paige with Kohler Customer Service. I am happy to help. Kohler does not have a "bone" finish, so we are not able to compare the two. We would suggest going to a local Kohler dealer to view the product in person. Thank you for choosing Kohler.

            By|Apr 15, 2026


              Viewing 1-8 of 2241

              Customer Reviews

              4.5 out of 5

              • 4.5 out of 13,919 reviews
              • 77% recommend this product
              Filter by:
              Showing 1-10 of 13,919 reviews
              Made for a man
              Installed yesterday and hate it! Looks nice initially with the smaller, designer tank. However, the seat cover is smaller than the bowl. A man must have designed this because no woman wants the back of her legs touching the exposed bowl rim. Its gross and uncomfortable.
              by
              Response from Jessica P.Apr 21, 2026
              Nhc26, my name is Jessica with Kohler Co. I am sorry to hear you of your disappointment with the toilet seat packaged with the Highline Arc toilet. As the manufacturer, we are very interested in supplying our customers with a quality product that delivers beyond expectations. I am sorry this was not your experience. If another seat would be more suitable for you, the following link is to all of our current options: https://tinyurl.com/2wtb8jde. If we may further assist in any way, please contact our Customer Service team at KohlerCustServ@kohler.com. We are here to help. - Jessica P. Kohler Customer Service.
                iI’m a plumber, and I always recommend this brand of toilet because they operate properly. They are low maintenance, last a long time, and flush effectively.
                by
                3 found this review helpful
                This customer chose to rate the product and not provide text.
                by
                Very easy installation and it came all the items needed to complete the entire setup. I came away happy with this purchase and would get it again as it replaced my previous 20 year old toilet.
                by
                We chose these toilets because of their sleek look and the height of the toilet. It is made sturdy so even larger people don’t have a problem sitting or feeling comfortable on the toilet. The shipping was perfect and nothing at all was damaged. Definitely meets expectations. /Users/tamiables/Desktop/IMG_8791.heic
                by
                1 found this review helpful
                Had Plumber install the toilet and Dino’s Plumbing of Las Vegas did a fantastic job. Toilet is very efficient and adds value to the bathroom.
                by
                • Verified Purchase
                Bad
                We have had this toilet for about a month and have had issues with the toilet seat it continues to loosen and it’s very hard to install properly. I would not recommend due to this.
                by
                Response from Kohler Product ExpertMar 10, 2026
                Hello, my name is Jessica with Kohler Customer Service. I am sorry to hear your toilet seat is loose on the bowl. This is nothing you should expect during normal use. Please verify that the hinge covers are snapped down over the arms ("U" shaped bracket that fits around black hinge mount) located at the back of the toilet seat and that the mounting hardware has been tightened. If the issue continues, please contact our Customer Service team at KohlerCustServ@kohler.com. We look forward to hearing from you soon. - Jessica P. Kohler Customer Service.
                  2 found this review helpful
                  Cheap quality
                  Nasty cheap quality. Look at the picture, now I have to buy seats
                  by
                  Response from Kohler Product ExpertMar 3, 2026
                  Global, my name is Jessica with Kohler Customer Service. I am sorry to hear you are not satisfied with the Highline Arc toilet. We put a lot of thought into our products, so it is unfortunate whenever we do not meet a customer's expectations. We would like to connect with you to hear more about your experience and aid in a resolution. Please contact our Customer Service team at KohlerCustServ@kohler.com. We look forward to hearing from you soon. - Jessica P. Kohler Customer Service.
                    2 found this review helpful
                    This toilet is for my investment property. We purchased multiple before. The price is not too high while the quality is acceptable. No complaint at the moment. Happy
                    by
                    1 found this review helpful
                    This toilet exceeded my expectations. It flushes powerfully and quietly, leaving the bowl completely clean every time. The comfort-height design and elongated seat make it very comfortable, and installation was straightforward. It looks sleek, modern, and has significantly improved our bathroom’s functionality. Highly recommend for performance and style. Really was a great upgrade to my bathroom!
                    by
                    4 found this review helpful
                    Showing 1-10 of 13,919 reviews