Replacing a furnace is a major home-improvement expense driven by unit complexity, efficiency goals, and installation specifics. The cost typically includes the new furnace, installation labor, ductwork adjustments, and permits. This guide outlines the price ranges and the key drivers behind the cost of furnace replacement.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Economy gas furnace | $2,500 | $3,500 | $4,500 | 80% AFUE, basic venting |
| Mid-range gas furnace | $3,500 | $4,800 | $6,000 | 85-90% AFUE, standard install |
| High-efficiency / condensing | $4,800 | $6,500 | $9,000 | 95%+ AFUE, two-stage or modulating |
| Variable-speed system | $6,000 | $7,500 | $11,000 | Enhanced comfort, higher upfront |
| Labor and installation | $1,500 | $3,000 | $5,000 | Wage rates vary by region |
| Permits and inspections | $100 | $300 | $1,000 | Local requirements differ |
| Ductwork adjustments | $200 | $1,000 | $3,000 | Needed for matching new furnace |
Total Cost Profile For Standard U.S. Homes
Typical total installed price ranges from $4,000 to $9,000, with most homes paying around $5,500-$7,500 for a mid-range, 90%+ AFUE gas furnace including standard installation. Assumptions: a 1,500–2,200 square foot home, single-zone ductwork, Midwest-to-South labor market, standard venting, and normal access.
Contractors may quote a bundled price or itemize components. The calculation often shows labor as 20–40 hours at $75–$125 per hour depending on access and complexity. Actual totals hinge on furnace efficiency, duct size, and accessibility.
The following table breaks down the typical price drivers. Materials cover the furnace unit and any required fresh-air or vent components; Labor accounts for removal, installation, and testing; Permits cover local code approvals; Delivery/Disposal includes haul-away of old equipment and new unit transport.
| Cost Component | Low | Average | High | Notes |
|---|---|---|---|---|
| Furnace unit | $2,500 | $4,500 | $9,000 | Depends on efficiency and features |
| Labor | $1,500 | $3,000 | $5,000 | Includes removal and startup checks |
| Permits | $100 | $300 | $1,000 | Varies by city/state |
| Duct adjustments | $200 | $1,000 | $3,000 | System-specific |
| Delivery/Removal | $100 | $600 | $1,000 | Old unit haul-away |
| Warranty / service plan | $0 | $200 | $600 | Optional |
Efficiency rating and airflow controls (e.g., 80% AFUE vs 95%+ AFUE) significantly shift price and long-term energy costs. Assumptions: standard installation, no extensive duct redesign.
Other strong drivers include system type (single-stage, two-stage, or modulating), ductwork complexity (collapsing runs, long runs, or multiple zones), and regional labor rates. For a two-stage, 80–90% AFUE unit in a climate with cold winters, expect a mid-to-high range within the quoted bands.
Prices tend to be higher in dense urban markets and the West Coast, where labor and permit fees are elevated. Regional deltas can reach 15–25% between markets with similar home sizes. Assumptions: standard unit, normal access, non-renovation site.
In the Midwest or Southeast, total installed costs often lie toward the lower end of the spectrum due to shorter lead times and lower labor rates. Owners should expect variations by 10–20% within nearby metro areas.
Typical crew sizes are 2–3 technicians, with installation taking 1–2 days depending on complexity. Rushed schedules or multi-zone retrofits can push costs upward by 10–30%. Assumptions: standard access, weekday work, normal weather.
For a two-person crew completing a straight swap, expected labor hours are 18–28 at $75–$125 hourly rate, yielding $1,350–$3,500 in labor. Planning ahead can stabilize scheduling costs.
Furnace price reflects the unit and any required accessories like a new inducer, heat exchanger, or condensate drain modifications. Per-unit pricing varies by efficiency and feature set, with condensers and variable-speed modules adding to the tab.
A typical mid-range, 90% AFUE gas furnace might show $3,000–$5,000 for the unit itself, plus $1,500–$3,000 for installation labor, and $200–$600 for misc. add-ons. Per-unit cost is the best predictor of total price when scope is fixed.
Trim costs by comparing quotes, ensuring proper sizing, and aligning on a single model family to simplify parts and labor. Limit scope creep by avoiding unnecessary upgrades. Scheduling during off-peak seasons can reduce labor rates by up to 10–15% in some markets. Assumptions: standard installation, no retrofit or zoning upgrades.
Consider if repair options exist for an older but functional unit or if reusing ductwork is feasible. Bundling installation and diagnostic fees can prevent surprises on the final bill.