Where Is My Header Tank

They’re located at the highest point of the heating system, usually in the loft, alongside the larger cold water storage tank. As well as the tank that stores the water, header tanks are made up of: An overflow pipe that runs outside. Connection to the mains water supply via a ball valve.

What is a water header tank?

The Header Tank is the smaller of the two water tanks usually found in the loft, the larger one being the cold water storage tank. The header tank is used to fill the heating system and accommodate the expansion of water during the heating cycle.

What are the two water tanks in my loft?

Why are there two water tanks in your loft? … Water from the mains is fed into the larger of the tanks which is the cold water storage tank. This water is then carried down to the boiler and a hot water cylinder to be heated for use in central heating and taps.