What is an advantage of cast iron boilers?

Cast iron boilers are notable for their resistance to corrosion, which is a significant advantage. This characteristic is particularly beneficial because it extends the lifespan of the boiler and reduces maintenance costs associated with corrosion-related issues. The cast iron material provides a durable barrier against various corrosive agents, making these boilers suitable for a variety of water conditions that could otherwise lead to deterioration in other types of boilers.

While some other factors may contribute to the overall performance and stability of cast iron boilers, such as their heavy design which can reduce vibration, their ability to maintain integrity against corrosion is what truly sets them apart in terms of longevity and reliability in operation.