Hot water flushes grease down plumbing drain
This is a common misconception. Grease sticks to pipes, drains and hot water. Even boiling water doesn’t remove grease or help it ‘flush’ down your drain. When hot water cools over the grease, the grease hardens and it actually creates a thick coating inside of your pipes. This can cause long-term issues, including backed-up or even burst pipes. Instead, wipe the grease out of pans or pour it into a disposable jar and place in the garbage.
To learn more common myths read this article. 5 Fresno Plumbing Myths