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Posted by Tom Stanton on February 07, 2002 at 09:09:28:
In Reply to: Watertube vs Firetube vs, Cast Iron Expected Service Life posted by Joye Chizek on February 06, 2002 at 11:46:04:
Watertube and firetube boilers are steel boilers and as such are more prone to corrosion than a cast iron boiler. Depending on your lbs/hr or Btu/hr capacity, space availability and budget, it really boils down to Chevys and Fords. I have seen many steel boilers that are between 50-80 years old and are running strong. Of course cast iron can only be used in a steam system up to and including 15psi, hot water cast iron boilers can operate higher, usually 20-80 psi For a domestic system I prefer cast iron. Whatever type boiler you have, if you keep it clean, chemically treated if needed, and keep the burner and safety appurtenances in good condition, you will get a long life out of the boiler.