Part Guides

Introduction A boiler has many important parts that work together to provide hot water and central heating. One of the most important but least understood components is the expansion vessel. Most homeowners never see it because it is usually hidden inside the boiler or installed nearby. However, without an expansion vessel, your boiler would struggle […]

Introduction When you turn on a hot water tap or switch on your central heating, you expect everything to work instantly. But have you ever wondered how your combi boiler knows whether to send hot water to your radiators or to your taps? The answer is the diverter valve. A diverter valve is one of