Toto CST646CEMFGNAT4001 Aquia IV 15 inch 0.9 / 1.28 GPF Dual Flush One-Piece Elongated Toilet with Push Button Flush, in Cotton White (Seat Sold Separately)

The Toto T40 Aquia IV 15 inch One-Piece Elongated Dual Flush Toilet combines modern design with exceptional functionality. Its skirted design conceals the trapway, enhancing its elegant appearance while making cleaning easier by eliminating gaps where dirt can accumulate. The one-piece construction also reduces the risk of leaks associated with two-piece toilets. Featuring Toto’s Dynamax Tornado Flush, it provides 360-degree cleaning power for thorough bowl coverage. The CEFIONTECT technology minimizes waste adhesion, further reducing cleaning frequency and the need for harsh chemicals. Additionally, the innovative inner bowl design decreases water flow resistance for a quieter flush. The chrome center-mounted push button allows users to choose between a 0.9 GPF rinse or a 1.28 GPF flush, promoting water conservation.

Features:

• DYNAMAX TORNADO FLUSH utilizes 360 degree cleaning power to reach every part of the bowl
• Highly efficient dual flush system promotes water conservation
• CEFIONTECT ceramic glaze minimizes waste from adhering to ceramic surfaces
• Bowl design reduces water flow resistance and turbulence, resulting in a quieter flush
• Completely skirted design for a sleek and understated look
• Elongated one-piece toilet, easier to maintain versus a two-piece toilet
• TOTO WASHLET+ upgrade compatibility: designed to work with a T40 WASHLET+ bidet seat for seamless integration
• Lid-top chrome dual flush push button - Select 1.28 or 0.9 GPF
• Universal Height allows for more comfort across a broader range of individuals
• WaterSense, CALGreen, and CEC compliant
• Does not include toilet seat or WASHLET
• 12'' Rough-in
• May be adapted for 10'' or 14'' rough-in with optional TOTO parts: TSU48.10 or TSU48.14 (sold separately)
• Included parts: tank to bowl gasket, tank to bowl hardware, and toilet bolt caps
• Purchase Separately: Wax ring, toilet mounting bolts, water supply lines, T40 WASHLET+ bidet seat or compatible toilet seat SS124 or SS234, and optional Auto Flush kit

Why should you buy Toto CST646CEMFGNAT4001 ?

• Ultra-Efficient Dual Flush System
  The 0.9 / 1.28 GPF dual flush option helps conserve water by allowing different flush levels for liquid and solid waste.
  
  
• Compact 15-Inch Rough-In Design
  The 15-inch rough-in makes it a great choice for bathrooms with limited installation space.
  
  
• Modern One-Piece Construction
  The seamless one-piece design provides a sleek look and reduces areas where dirt can accumulate.
  
  
• Elongated Bowl for Added Comfort
  The elongated bowl shape ensures a more comfortable seating experience compared to round bowls.
  
  
• Advanced Aquia IV Performance
  The Aquia IV system delivers reliable flushing power with improved efficiency and bowl cleanliness.
  
  
• Easy Cleaning and Maintenance
  The smooth ceramic surface and simplified structure make cleaning quick and hassle-free.

Frequently Asked Questions by Customers

• What is a dual flush toilet?
  A dual flush toilet offers two flush options: a lower volume for liquid waste and a higher volume for solid waste.
  
  
• What does 15-inch rough-in mean?
  It refers to the distance between the wall and the center of the toilet’s drain outlet, which in this case is 15 inches.
  
  
• Is this a one-piece toilet?
  Yes, it features a seamless one-piece design for a modern look and easier cleaning.
  
  
• Does this toilet save water?
  Yes, it is designed with a dual flush system that significantly reduces water usage.
  
  
• Is the bowl elongated?
  Yes, the toilet comes with an elongated bowl for enhanced comfort.
  
  
• Is Aquia IV flushing system reliable?
  Yes, the Aquia IV system is engineered for strong, efficient, and consistent flushing performance.

Pros and Cons of Toto CST646CEMFGNAT4001 Aquia IV 15 inch 0.9 / 1.28 GPF Dual Flush One Piece Elongated Toilet

Pros

• Dual Flush Water Efficiency
  Offers 0.9/1.28 GPF dual flush options, allowing users to save more water depending on waste type.
• Compact 15-Inch Design
  Space-saving profile makes it suitable for smaller bathrooms without compromising comfort.
• One-Piece Construction
  Seamless design provides a modern look and makes cleaning easier by reducing dirt traps.
• Elongated Bowl Comfort
  Elongated shape offers improved seating comfort compared to round bowls.

Cons

• Lower Seat Height (15 Inch)
  May feel too low for some users, especially seniors or those preferring chair-height toilets.
• Heavier One-Piece Unit
  Can be difficult to install due to weight and structure.
• Limited Bathroom Fit in Some Cases
  Elongated design may still be tight for extremely compact bathrooms.

Conclusion

The Toto CST646CEMFGNAT4001 Aquia IV is a compact and highly efficient dual-flush toilet designed for modern water-saving needs. Its sleek one-piece design, strong flushing performance, and comfort-focused bowl make it a reliable choice for smaller bathrooms. While the lower height and higher cost may not suit everyone, it offers excellent efficiency, hygiene, and long-term value.