Furnace Replacement Cost Calculator
Build a planning estimate for replacing a furnace. Enter home size and efficiency tier, then adjust for install complexity and regional labor before you book load calculations.
Estimated furnace replacement cost
Enter your project details and calculate to see a planning estimate.
This is a planning estimate, not a contractor quote. Actual costs vary by location, home condition, material availability, permits, and project complexity.
Planning rates for cost year 2026 (national baselines × state regional factors). Not a contractor quote.
Main cost factors
Home size
Larger homes need more capacity and often more labor to install and commission the furnace.
Efficiency tier
Higher AFUE and condensing designs raise equipment and venting costs versus standard units.
Access and region
Tight closets, attic installs, and high-cost labor markets increase totals above national averages.
Cost table
| Item | Low | Typical | High |
|---|---|---|---|
| Standard AFUE furnace | $3,500 | $6,500 | $9,500 |
| High-efficiency furnace | $5,000 | $8,500 | $12,000 |
| Premium condensing | $6,500 | $10,500 | $14,500 |
National average explanation
Many U.S. furnace replacements land between about $3,800 and $12,000. The calculator scales that planning band by home size, efficiency tier, complexity, and region.
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Frequently asked questions
Does the estimate include duct redesign?
- No. The model assumes a like-for-like furnace swap with typical venting checks. Major duct redesign, zoning, or panel upgrades may add cost.
How does efficiency tier change price?
- Standard AFUE units are the baseline. High-efficiency and premium condensing furnaces cost more to buy and often more to install because of venting requirements.
Should I still get Manual J sizing?
- Yes. Use the calculator for budgeting, then ask contractors for sizing and matched model numbers before you compare written bids.
Methodology & estimate disclaimer
Production model: base equipment × AFUE tier × home-size factor × complexity × region.
Actual costs vary by location, home condition, material availability, permits, and project complexity. Read our methodology, the national cost bands table, editorial policy, and disclaimer. Planning provenance uses the internal model and, where listed, public datasets for context—not invented third-party bid averages.
Planning sources
- Home Cost Atlas national planning model v1 (version: v1) — Modeled national planning ranges used for cost guides and seed CostRecords. Values are planning estimates synthesized for budgeting context, not observed contractor invoices or bid samples.
- Home Cost Atlas planning baselines v1 (version: v1) — Internal baseline spreads (low / typical / high) by project category. Intended for calculator scaffolds and aggregation fallbacks; not a dataset of paid jobs.
- EIA Residential Energy Consumption Survey (RECS) / residential energy data (version: RECS / residential energy public tables) — Equipment stock and energy-use context for HVAC and envelope planning scopes. Does not provide contractor install invoices.
- DOE Energy Saver — home heating systems — System types and efficiency context for HVAC / heat-pump planning.
Public datasets supply labor and market context for the planning model. They are not aggregated contractor invoices or bid samples.
Cost year: 2026 rate book · Data version: hca-national-model-v1+cluster-context-2026 · Last reviewed: July 24, 2026