Where the money goes
Part $5,000–$10,000Labor $0–$10,000Typical labor time: 8–16 hrs
You might need this if…
DIY difficulty: professional-only•Both units failing
•Major renovation
•Upgrading entire system
The part
A full system replacement includes a new furnace and air conditioner or heat pump, matched for efficiency and capacity.
This is general information, not professional advice. Gas, electrical, and combustion repairs can be dangerous — when in doubt, call a licensed technician.