High water pressure can cause damage to your boiler as well as pipes running water in your home. This can be caused by high water pressure in the boiler.
Most boilers handle the water pressure when you run the hot water in your home. If you find your water pressure is high, this is visible on the pressure indicator fitted on boilers. You can repressurise your water or bleed the radiators to bring the pressure down.
Your boiler indicates the level of pressure, which can be adjusted to the correct pressure.