10 Best One Piece Toilets 2026 in the United States

The TOTO WASHLET+ Nexus One-Piece Toilet is an elongated-shaped toilet, which many find more comfortable compared to round bowl designs. The integrated WASHLET+ bidet seat offers a variety of luxurious features including warm water washing, an auto open/close lid, a heated seat, and a warm air dryer. These features can greatly enhance the user experience with customizable settings for temperature and pressure.

Furthermore, the EWATER+ system mists the wand and toilet bowl, helping to keep the unit clean without harsh chemicals. The toilet uses a 1.28 gallons per flush (GPF) system, making it water-efficient and eco-friendly. At 27 inches in height, it is a comfortable height for most users, and its sleek design hides water supply and power cords for a cleaner look.

The toilet and bidet are made from a combination of ceramic and plastic materials, finished in a cotton white color, which can easily fit into most bathroom decors. One potential downside is its relatively high weight at 116 pounds, which might make installation more challenging. Additionally, the bidet seat is made of plastic, which may not feel as premium as other materials. The contemporary design and array of features make it a great choice for those looking to upgrade their bathroom experience with advanced convenience and cleanliness features.

The American Standard 2034314.020 Champion 4 One-Piece Toilet stands out for its powerful and clog-free flushing system, featuring a large 4-inch flush valve and a fully-glazed 2-3/8-inch trapway, ensuring reliable performance with each flush. This makes it an excellent choice for households that prioritize efficient waste removal. The toilet's one-piece design means fewer seams and crevices, making it easier to clean compared to traditional two-piece models. The EverClean surface further enhances cleanliness by inhibiting the buildup of stains and odors, which is a significant advantage for maintaining hygiene with minimal effort.

The elongated bowl shape and chair-height design add to the comfort, making it user-friendly, especially for individuals who might have difficulty sitting down or standing up from lower seats. The included slow-close seat is a thoughtful touch, preventing the annoyance of slamming lids and adding to the quiet operation of the toilet. Made from durable vitreous china, it promises longevity and a clean, white finish that fits well with most bathroom decors.

However, the toilet is quite heavy at 118 pounds, which could make installation more challenging without professional help. Additionally, its water consumption is 1.6 gallons per flush (gpf), which is higher than some of the more water-efficient models on the market that use 1.28 gpf or less. This could be a consideration for those particularly focused on reducing water usage. In summary, the Champion 4 is a solid choice for those looking for a powerful, easy-to-maintain toilet with added comfort features, although its weight and water usage might be potential drawbacks for some buyers.

The Casta Diva Elongated One-Piece Toilet is a compact, modern choice designed to blend style with functionality. Its one-piece, skirted design makes cleaning easier and helps prevent leaks, which is a real plus in bathroom maintenance. The elongated bowl shape offers more seating comfort compared to round bowls, and the 17-inch ADA comfort chair height suits most adults, making it easier to sit and stand up. It features a dual-flush system with options for 1.1 gallons per flush (liquids) and 1.6 gallons per flush (solids), meeting EPA WaterSense standards for water efficiency, so it helps save water without sacrificing flush power.

The flushing system uses a powerful siphon jet with a fully-glazed trapway, which usually means quiet and effective flushing with less risk of clogs. The toilet's dimensions are on the compact side, which is good for smaller bathrooms. Its seat is made from durable polypropylene with a soft-close function, preventing loud slamming and adding to user comfort. Installation is straightforward with a standard 12-inch rough-in and included hardware, even for those with little plumbing experience.

Weighing 125 pounds means it might be a bit heavy to handle during installation without help. Also, while the design is modern and smooth, some may prefer a different seat shape than the U-shaped one provided. The one-year limited warranty and lifetime technical support add peace of mind. This toilet is a solid pick for anyone looking for an efficient, comfortable, and stylish one-piece toilet, especially suited for small to medium-sized bathrooms.