The cost to replace an oil furnace is usually about $2,500 to $10,000 total, including equipment and installation, with many standard-efficiency jobs landing around $2,500 to $6,000 and high-efficiency systems going higher.

What affects the price

  • Furnace unit: roughly $3,500 to $9,175+ depending on efficiency and features.
  • Installation labor: about $1,000 to $3,000.
  • Removal/disposal of the old unit: about $250 to $645.
  • Extra work: duct updates, permits, thermostat changes, or tank replacement can raise the total.

Typical ranges

Type Typical cost
Standard efficiency oil furnace $2,500 to $6,000
High- efficiency oil furnace Up to about $10,000
Common installed price range $3,000 to $6,500

Practical takeaway

A good rule of thumb is to budget around $5,000 to $7,000 for a typical replacement, then add more if your home needs duct work, permits, or a new oil tank.

Bottom line

If you want a fast estimate for planning, use $3,000 to $10,000 as the realistic replacement range.