A moaning toilet is likely caused by a faulty fill valve, commonly known as a ballcock or float valve. Use this guide to replace it with a new one.

The tank is the area of the toilet that holds onto the water. When you flush, water rushes quickly from the tank into the bowl, pushing everything down into your home’s plumbing system.

1. The flapper. The flapper, which creates a seal in the bottom of your toilet tank and then lets water flow into the bowl when you flush, is one common cause of running toilets.