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.
Madison is a city in Lake County, South Dakota, United States. The population was 6,474 at the 2010 census. It is the county seat of Lake County and is home to Dakota State University. Madison is located at 44Â°0â²28â³N 97Â°6â²53â³W / 44.00778Â°N 97.11472Â°W / 44.00778; -97.11472 (44.007734, -97.114738). According to the United States Census Bureau, the city has a total area of 4.3 square miles (11.1 kmÂ²), all of it land.