Kohler and Toto both offer customers the option of a one-piece, two-piece or wall-hung toilet. Different bowl shapes and flushing systems are also available, with Toto also categorizing its toilets based on the flush rate. Among two comparable models, the Toto toilet is around $200 more expensive than the Kohler toilet.
Toto's Aquia II Dual Flush Two-Piece Toilet is available for $328 at Home Depot. In contrast, Kohler's Wellworth two-piece round-front toilet costs only $175 from the same retailer. Both items may cost more through other retailers. Toto offers five different color options, while Kohler offers four. Both products received a certification from the EPA's WaterSense program, which highlights water-efficient items.
The Aquia II from Toto offers both 1.6 and 0.9 gallons per flush and features an elongated bowl. It uses a dual-max flushing system with a push button for flushing. The dual-max system ensures significant water savings. The toilet comes with a one-year manufacturer warranty.
Kohler's Wellworth two-piece toilet has a round-front bowl, which is very useful in smaller bathrooms. With 1.28 gallons per flush, this toilet uses 20 percent less water than 1.6 gallons per flush toilets. When compared to a 3.5-gallon toilet, this item saves as much as 16,500 gallons of water every year.