10 Best Rear Drain Toilet 2026 in the United States

The TOTO Drake Two-Piece Elongated Toilet offers a mix of powerful performance and modern design. Its TORNADO FLUSH system ensures effective cleaning with a circular water motion, combined with the CEFIONTECT glaze to prevent waste buildup, meaning less frequent cleaning for you. The standard height may be more comfortable for those who prefer a traditional toilet height over taller options.

With a 1.6 gallons per flush rate, it conserves water without compromising on the flushing power, thanks to the wide 3-inch flush valve and siphon jet bowl. This makes it efficient, ensuring waste is cleared in one go. The elongated bowl shape adds comfort while the cotton white finish suits various bathroom décors.

It is relatively easy to install, fitting into 12-inch rough-in spaces. However, you will need to purchase the wax ring, flange bolts, and water supply lines separately, which adds to the installation cost. At 89 pounds, it is quite heavy, so handling during installation may require an extra pair of hands. Despite these minor drawbacks, the TOTO Drake stands out for its reliable performance, water efficiency, and sleek design that can enhance any bathroom.

The Kohler K-3578-0 Two-Piece Elongated Toilet Bowl is a solid option for those looking for a rear-drain toilet. The elongated bowl shape provides added room and comfort, which can be a significant advantage for users seeking extra space. The 'Comfort Height' feature, which mimics chair-height seating, makes it easier for most adults to sit down and stand up, enhancing accessibility and comfort.

The toilet uses a Sloan FLUSHMATE system, providing powerful and effective flushes that ensure cleanliness with a single use. The water consumption rate is 1 gallon per flush (GPF), which is efficient and helps in water conservation, making it an eco-friendly choice certified by WaterSense. However, the toilet uses a gravity flush system, which might not be as effective as pressure-assisted flushes in some scenarios.

The vitreous china material offers durability and an easy-to-clean surface, maintaining a pristine look over time. Installation is floor-mounted, which is standard and relatively straightforward for most users. The noise level isn't specifically mentioned, but gravity flush systems are typically quieter than pressure-assisted models. Aesthetically, the toilet has a clean, white finish with a polished chrome trip lever, fitting well into most bathroom designs. This toilet may be best suited for users looking for comfort and water efficiency who don't mind a slightly higher installation effort due to its two-piece design.

This rear drain toilet offers a space-saving design with its 7" rough-in and 3" outlet, making it a good fit for bathrooms where rear discharge plumbing is required. The elongated bowl shape and standard 16.5" height provide comfortable seating for most users. It features a powerful tornado flush system that uses 1.28 gallons per flush, which is efficient and helps keep the toilet clean without wasting water. The soft-close seat adds a nice touch by preventing loud slams, improving the bathroom experience.

Installation is versatile thanks to the included flexible and hard extension pipes, which can accommodate different plumbing setups and make the installation process smoother. The ceramic construction and white finish give it a clean, modern look that should blend well with most bathroom styles. On the downside, while the toilet promises quiet operation, some users may still notice typical flushing noise common with powerful flush systems. Also, weighing 101 pounds, it might be a bit heavy to handle during installation without assistance.

This toilet suits homeowners or renovators needing a rear outlet model that balances efficiency, comfort, and ease of installation, especially in tight spaces.