8 Best Kohler One Piece Toilets 2025 in the United States

The Kohler 77795-0SG Eir Toilet is a compact, streamlined one-piece toilet designed for modern bathrooms. Its elongated bowl shape offers added room and comfort, making it a good choice for those who value extra space. The Comfort Height feature is particularly beneficial for adults, as it provides chair-height seating that makes sitting down and standing up easier. This aspect can be especially appreciated by elderly individuals or those with mobility issues.

The dual flush system is efficient, allowing users to choose between 0.8 or 1.0 gallons per flush, which helps in conserving water without compromising on performance. The stainless steel wand with adjustable spray functions adds a personalized cleansing experience, enhancing hygiene and comfort. Made from vitreous china, the toilet is durable and has a smooth finish. The white color with Sunrise Gold Trim gives it a stylish and elegant appearance, fitting well in a modern bathroom setting.

However, weighing 116.8 pounds, it may pose a challenge during installation and might require professional help. Additionally, while the toilet has integrated cleansing features, the noise level might be a concern for some users, especially in quiet homes. This toilet is well-suited for those looking for a modern, comfortable, and hygienic option but may need assistance with installation due to its weight.

The KOHLER K-5172-NY San Souci toilet is a one-piece unit that offers several noteworthy features. The compact elongated bowl design provides additional comfort without taking up extra space, making it suitable for smaller bathrooms. The Comfort Height feature is particularly beneficial for adults, as it mimics chair-height seating, making it easier to sit down and stand up. The AquaPiston flushing technology ensures thorough and powerful flushing by allowing water to flow into the bowl from all sides, improving performance and reducing the risk of clogs.

The durable canister design also minimizes the likelihood of leaks, which is a significant advantage over traditional flapper designs. At 94 pounds, it is relatively heavy, which might pose challenges during installation. The toilet is made from high-quality china, which ensures durability, and it comes in a dune finish that can complement various bathroom decors.

It includes a Grip-Tight Reveal Q3 seat, adding to the value. The toilet is also Watersense certified, meaning it meets efficiency standards without sacrificing performance. This product is ideal for those looking for a compact yet comfortable toilet with efficient flushing capabilities. However, potential buyers should be prepared for a possibly challenging installation due to its weight.

The KOHLER K-3619-RA-0 Cimarron Comfort Height one-piece toilet is a solid choice if you want a sleek and easy-to-clean design. Its one-piece construction means no gaps between tank and bowl, which helps keep things hygienic. The elongated (oblong) bowl offers a bit more room and comfort compared to standard round bowls, which is nice for everyday use. The comfort height is another plus—it’s similar to the height of a chair, making it easier for most adults to sit down and get up without strain.

Flush performance stands out here thanks to KOHLER’s AquaPiston technology. Unlike traditional flappers, this system lets water flow from all sides inside the bowl, giving a stronger and more efficient flush while using just 1.28 gallons per flush—a good balance between cleaning power and water savings. Plus, the durable canister flush design reduces the chance of leaks.

Made from vitreous china with a classic white ceramic finish, the toilet looks clean and should hold up well over time. Noise level during flushing is reportedly quiet, especially with the included quiet-close toilet seat, which prevents loud slamming. Installation-wise, it comes with most parts like bolts, caps, seat, and a right-hand trip lever, but you'll need to supply your own water line. The weight is on the heavier side (112 pounds), so having help during installation is recommended. While no complicated tools seem necessary, some DIY experience or professional help might make setup smoother. If you want a reliable, water-efficient toilet with comfort and a modern flush system, this KOHLER model fits well and is especially suitable for homeowners looking for ease of cleaning, good flush power, and a comfortable height. If the heavier weight or installation without a supply line seems tricky, professional assistance might be advisable.