In summary: hot water might help for mild, grease/soap-based clogs, but it’s not a reliable primary method, and boiling water will damage your toilet.
Porcelain is sensitive to extreme temperature changes (thermal shock). If you pour boiling water into a cold toilet bowl, the porcelain can crack instantly, leading to a permanent leak and an expensive replacement. Aim for or water that has just begun to steam, but is not yet boiling. Step-by-Step: The Hot Water Method 1. Assess the Water Level can hot water unclog a toilet
Before we discuss the "How-To," we must address the biggest safety risk: In summary: hot water might help for mild,
Stand up and pour the water from waist height directly into the drain hole. The combination of heat and the "drop" creates the force needed to dislodge the blockage. 5. Wait and Repeat Aim for or water that has just begun