An unvented hot water cylinder is a high-performance, pressurized appliance that delivers excellent mains-pressure hot water throughout your home. However, because these systems operate under high pressure, annual servicing is a critical safety requirement and is often mandated by home insurance policies and manufacturer warranties. At Wheildons, we provide professional unvented hot water cylinder servicing across the Lake District and Cumbria.
During a standard annual service, our certified engineers focus on checking the vital safety devices built into the cylinder. We test the temperature and pressure relief valves to ensure they open and close perfectly, preventing any dangerous pressure build-up. We also check the pressure charge inside the internal or external expansion vessel, which accommodates the natural expansion of water as it heats up. If the expansion vessel loses its charge, it can cause the safety valves to drip continuously, reducing your system’s efficiency.
