Oil Boiler Cost by Material The heat exchanger inside an oil boiler is made of one of three materials - cast iron, aluminum, or stainless steel. The most common is cast iron, which is durable, long-wearing, and the least expensive. While less common, some higher-efficiency boilers use sta...
An inspection of the boiler, including the flame Looking at the internal and external parts of the flue Checking the operating pressure and input heat Inspecting the case seals and safety devices inspecting other components such as heat exchanger, burner and main injector (this involves removing the...