Water hammer is always an issue. Do you hear a loud bang in noise coming from the flush of your toilets? Hence, This kind of annoyance noise or unusual vibrations you are hearing is considered as a water hammer. The simple method of curing toilet hammers is to install an air chamber. It is created when you shut off the water suddenly and the fast-moving water rush through the pipe is brought to a quick halt, creating a sort of vibrate and a hammering noise.