What should be included: 1  Installing a standard boiler (80%-85% annual fuel utilization efficiency) typically costs about $2,500-$5,000 for a gas-fired model and $3,000-$6,500 for an oil-fired unit (generally used in areas without municipal gas lines).hat should be included: 1  Installing a standard boiler (80%-85% annual fuel utilization efficiency) typically costs about $2,500-$5,000 for a gas-fired model and $3,000-$6,500 for an oil-fired unit (generally used in areas without municipal gas lines).
Brookings County, South Dakota. Brookings County is a county located in the U.S. state of South Dakota. As of the 2010 census, the population was 31,965, making it the fifth-most populous county in South Dakota. Its county seat is Brookings. The county was created in 1862 and organized in 1871.
Brookings County, South Dakota (SD) County population in 2014: 33,314 (70% urban, 30% rural); it was 28,220 in 2000. County owner-occupied with a mortgage or a loan houses and condos in 2010: 4,511. County owner-occupied free and clear houses and condos in 2010: 2,409. County owner-occupied houses and condos in 2000: 6,207.