Drain Clogged: Drano For Dishwasher

Panic sets in. You don’t have a plunger handy, and the hardware store is closed. Your eyes scan under the kitchen sink and land on the familiar orange bottle:

Drano relies on a chemical reaction—usually sodium hydroxide (lye) or sodium hypochlorite (bleach)—that generates intense heat to melt grease and hair. For it to work, the product needs to sit in the clog undisturbed. In a sink, you pour it into standing water. In a dishwasher, that standing water is right at the bottom, surrounding the heating element and the delicate rubber seals. When you pour in Drano, that heat has nowhere to go. It warps the rubber drain hose, melts the plastic pump impeller, and degrades the lower spray arm. You might clear the clog, but you’ve also just melted the internal organs of your machine. drano for dishwasher drain clogged

Here is why that orange bottle is the worst possible tool for a dishwasher clog. Panic sets in

Sometimes, people use Drano, run a rinse cycle, and the water drains. They think they’ve won. What actually happened is the heat from the reaction temporarily softened a grease plug, allowing it to move further down the pipe. Now, instead of a clog at the filter, you have a clog three feet downstream in a narrow ¾-inch hose. That new clog is mixed with melted rubber and lye crystals that have re-solidified into a concrete-like mass. At that point, you aren't unclogging it—you are buying a new dishwasher. For it to work, the product needs to