What should be checked during routine maintenance on a combination hot water cylinder?

During routine maintenance on a combination hot water cylinder, it is essential to check the operation of the float valve. The float valve plays a critical role in regulating the water level within the cylinder. If the float valve is malfunctioning, it can either cause the tank to overflow, leading to potential water damage, or it can fail to fill the tank adequately, compromising hot water availability.

Ensuring that the float valve operates correctly contributes to the efficient and safe functioning of the hot water system. A properly functioning float valve helps maintain the necessary water level, preventing issues like water pressure fluctuations and insufficient hot water supply.

While checking the accuracy of the temperature gauge, the condition of tank insulation, and the settings of the pressure relief valve are all important for the overall maintenance of a hot water system, the float valve's operation is particularly crucial as it directly impacts the water supply and the functioning of the hot water cylinder.