Question: how much does it cost to replace an oil furnace?
Answer: Oil furnaces are far less efficient and can cost anywhere from $2,200 to $2,500. More efficient models can cost up to $10,000. These also tend to be much more expensive to operate and are dirtier than gas furnaces. Electric heat can cost anywhere between $1,800 and $2,700 to install, but these aren't a popular option.