Surgery - Colorectal. In brief: Yes, most docs can. Most hemorrhoids should first be treated by conservative measures, such as bulking the stools, education to avoid bad habits like straining, sitting for long periods of time, etc.
Either system will have a burner. 23 years may very well be beyond the typical life expectancy of a oil burner, but a furnace or boiler should last considerably longer than 23 years. The boiler of my house here in MA is 58 years old and still works fine. I am starting to consider replacements, however.
The Dutchess County Choice in Boilers. Boilers can be oil or gas fired. Folkes uses cast iron boilers, which have been sold in the US for over 100 years. Cast iron boilers have a life expectancy of 20 to 30 years or more. Cast iron boilers are very durable and provide comfortable and affordable heating for your family.