Franklin Delano Roosevelt was the 32nd President of the United States. A leader during the Great Depression and World War II, he was famous for being the only American presideâ¦nt elected to an unprecedented four terms - from 1933 to 1945. D.k.
The Average Boiler Life Expectancy. Boiler life expectancy depends very much upon the type of boiler that you purchased. The average expectancy of a traditional gas boiler would be between 10 and 15 years, if you keep it well maintained and have it serviced annually. Other boilers, such as electrical devices, will last between 8 and 10 years.
Oil Furnace Service Life. Many oil furnace manufacturers offer a 10-year warranty, but this doesnât always indicate the actual lifespan of the furnace. The average life expectancy for a properly maintained oil furnace is usually 15 to 20 years. Some furnaces may last as long as 25 years. The key to efficient operation of your oil furnace is annual maintenance by a certified HVAC technician.