Is it hard to replace inside of toilet?

Rather than replace your entire toilet, you can replace the guts inside the toilet tank. You can purchase the toilet tank parts separately, or you can find them packaged together in repair kits. Turn the shut-off valve beneath the toilet tank clockwise until tight. Hold the fill valve with one hand to stabilize it.

How much does it cost to replace the inside of a toilet?

It will cost between $45 to $197 to fix a toilet yourself or between $130 and $310 to have a professional fix it. Plumbing contractors charge an average of $72 to $82 per hour, which doesn’t include parts or materials.