10 Best One Piece Toilets 2026 in the United States

The KOHLER K-5172-0 San Souci is a one-piece toilet designed for comfort and efficient performance. It features a compact elongated bowl that offers more seating comfort than a round bowl while occupying similar space, making it a smart choice for bathrooms where space is limited but comfort matters. This model has a Comfort Height of about 28 inches, which is slightly taller than standard toilets, facilitating easier sitting and standing for most adults.

It utilizes KOHLER's Aqua Piston flushing system, a strong gravity-powered flush that cleans the bowl thoroughly with just 1.28 gallons of water per flush. This low water usage contributes to water bill savings and environmental friendliness. The toilet also includes a concealed trapway and Clean Caps, making it easier to clean and providing a sleek appearance without exposed pipes. Made from durable vitreous china ceramic, it has a smooth white finish that resists stains and scratches. The included seat is a high-density polyethylene Quiet-Close type that prevents slamming and remains securely in place. The left-hand trip lever is standard and easy to operate.

Weighing 94 pounds, the toilet is somewhat heavy and may require two people for safe installation. While the flushing system is powerful, some users might prefer dual-flush models for more water-saving flexibility during light use. Additionally, the left-hand lever placement may not suit all bathroom layouts, so verifying compatibility before purchase is recommended. This KOHLER toilet is suitable for those seeking a comfortable, efficient, and easy-to-clean one-piece toilet with a modern design, especially in smaller bathrooms where space-saving is important.

The HOROW T0338W Compact One Piece Toilet is a solid choice for anyone looking for a modern, efficient toilet solution. Its one-piece design not only makes it aesthetically pleasing but also simplifies cleaning, as there are fewer crevices for dirt to hide. The elongated bowl shape enhances comfort, especially for adults, while the chair height of 17.3 inches makes it suitable for the elderly and individuals with mobility challenges, aligning with ADA standards.

In terms of performance, the dual flush system with options for 0.8 and 1.28 gallons per flush is a standout feature, promoting significant water savings while still delivering a powerful flush rated at 1000 grams. This means you can flush effectively without using excessive water, making it environmentally friendly. Additionally, the toilet's ceramic material and glazed finish contribute to its durability and easy maintenance.

Installation is designed to be user-friendly with clear instructions and fewer complications, making it manageable for a DIY enthusiast or a quick job for a plumber. The included soft-closing seat enhances user experience by minimizing noise and providing a touch of luxury. However, some potential drawbacks should be noted. Weighing in at 99.2 pounds, the toilet is relatively heavy, which may pose a challenge during installation if you're not prepared. The seat material, while durable, is plastic, which might not feel as premium as other materials such as wood. Despite its relatively lower sales rank, the HOROW T0338W remains an excellent option for those seeking a compact, stylish, and efficient toilet that meets modern needs, particularly for smaller spaces and accessibility requirements.

The TOTO MS646234CEMFGN#01 is a one-piece toilet featuring a round bowl shape, which is typically more compact and suitable for smaller bathrooms. It incorporates the Aquia IV dual flush system, offering efficient water use with 0.9 gallons for liquid waste and 1.28 gallons for solid waste, helping save water without sacrificing performance.

Constructed from durable ceramic with a smooth cotton finish, the toilet has a clean look that fits well in most bathroom styles. It stands about 28.63 inches high, which is around standard height, ensuring comfort for most users. The package includes a plastic seat and the toilet uses floor-mounted installation, common for residential use.

Weighing 118 pounds, this is a sturdy unit that might require two people for installation. This model is a reliable, water-efficient option with basic features, especially suited for spaces where a compact design is important. The round bowl may be less roomy, and the plastic seat offers basic comfort and durability.