Wakulla Spring is one of the largest springs in the world, discharging an average of 260 million gallons of water per day. The spring pool is an impressive 315 feet in diameter, and the huge vent is about 82 feet wide, 50 feet high, and 185 feet deep.
Typical costs: Replacing an old oil-fired furnace with a new one typically costs $2,000-$5,000 for a simple installation of a basic model, but it can cost $6,000-$10,000 or more for a larger, more energy-efficient unit with a difficult installation, such as a complex floor plan or hard-to-reach ductwork.
Gas furnace costs range from $1,700 to $5,000, including installation, for low-to-moderate efficiency systems, depending on the size of the furnace required by your home.The lowest annual fuel utilization efficiency (AFUE) rating allowed by the U.S. Department of Energy for a gas furnace is 80 percent.as furnace costs range from $1,700 to $5,000, including installation, for low-to-moderate efficiency systems, depending on the size of the furnace required by your home.