Is a 1.6 or 1.28 Toilet Better? Efficiency, Performance, and Recommendations
About AiDi Sanitaryware AiDi Sanitaryware is a factory-direct supplier of efficient toilets, focusing on water-saving designs that balance performance and sustainability. We help you choose models aligned with modern standards for optimal bathroom functionality. Deciding between a 1.6 GPF (gallons per flush) and 1.28 GPF toilet involves weighing water savings against flush power. In 2026, with rising water costs and regulations, 1.28 GPF models are generally better for efficiency without sacrificing performance, per EPA guidelines. This AiDi Sanitaryware guide compares them based on expert insights from non-profit sources. Understanding GPF: 1.6 vs. 1.28 GPF measures water used per flush. 1.6 GPF was the 1990s standard, but 1.28 GPF (high-efficiency) cuts usage by 20%, saving 13,000 gallons yearly per household, according to EPA WaterSense. Performance Comparison Use this table for key differences: Aspect 1.6 GPF 1.28 GPF Flush Power Stronger for solids Comparable with modern tech (MaP...