Where the money goes
Part $1,500–$3,500Labor $0–$4,000Typical labor time: 4–8 hrs
You might need this if…
DIY difficulty: professional-only•Cracked heat exchanger
•Repeated expensive repairs
•Unit over 15–20 years old
The part
Replacing an standard-efficiency gas furnace includes the unit, basic venting, permit, and haul-away.
This is general information, not professional advice. Gas, electrical, and combustion repairs can be dangerous — when in doubt, call a licensed technician.