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Quick answer — furnace & AC replacement cost
Replacing both a furnace and central AC on a 2,000 sq ft home typically runs $8,815–$41,159 in this model (from basic 80 AFUE + 14 SEER in the South to 98 AFUE + 20 SEER with major ducts in the West). The default scenario — 95% AFUE + 16 SEER, Midwest — totals about $16,280 ($3,780 labor, $1,350 ducts, $350 permits). Furnace only (1,800 sq ft, South): ~$7,970. AC only (2,200 sq ft, 18 SEER, Northeast): ~$13,740. Get written quotes; this is an educational estimator.
Free HVAC replacement cost calculator for equipment, labor, ductwork, permits, illustrative rebates, and energy savings. Adjust AFUE, SEER, home size, and region using typical contractor pricing bands.
Last updated October 9, 2026. Redirected from /hvac-cost-calculator. Also see AC installation cost and ductwork replacement cost.
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Installation Time:
2 days
Annual Savings:
$955/yr
Potential Rebates:
Up to $1,300
Check local utility and federal tax credits
Cost Considerations:
Combined furnace + central AC, Midwest region, moderate installation, minor duct repairs. Tonnage ≈ sq ft ÷ 500.
| Sq ft | ≈ Tons | AFUE | SEER | Est. total | Notes |
|---|---|---|---|---|---|
| 1,200 | 2.4 | 90% | 14 | $10,700 | Smaller home, standard efficiency |
| 1,500 | 3 | 90% | 16 | $13,139 | Starter high-efficiency AC |
| 2,000 | 4 | 95% | 16 | $16,280 | Typical mid-efficiency combo (default demo) |
| 2,500 | 5 | 95% | 18 | $19,858 | Larger home, higher SEER |
| 3,000 | 6 | 98% | 20 | $26,353 | Premium efficiency package |
Efficiency options
80% to 98% AFUE
Estimates for standard to ultra-high efficiency furnaces
SEER ratings
14 to 20+ SEER
Cost analysis for standard to premium efficiency systems
Full installation
Equipment + Labor
Includes permits, ductwork, and complexity adjustments
System sizing
Based on Home Size
Proper tonnage calculation for optimal efficiency
Annual savings
Lower Utility Bills
Calculates savings from higher efficiency systems
Incentives
Federal + Utility
Potential savings up to $3,000+ with high-efficiency systems
For a 2,000 sq ft home with 95% AFUE furnace + 16 SEER AC:
Furnace Cost
$5,616
AC Cost
$5,184
Total Cost
$16,280
Rebates
$1,300
Our furnace and AC replacement cost calculator uses industry-standard HVAC pricing from leading manufacturers and HVAC contractors to estimate equipment, installation, and total project costs. The calculation accounts for home size, system efficiency ratings, regional labor rates, installation complexity, and ductwork condition to provide accurate budget estimates.
Tonnage = Home Size ÷ 500 sq ftEquipment Cost = Base + (Tonnage × Factor) × EfficiencyLabor Cost = Equipment Cost × 35%Total = Equipment + Labor + Ductwork + PermitsAdjusted = Total × Regional MultiplierThese formulas calculate HVAC capacity based on home size (1 ton per 400-600 sq ft), then estimate equipment costs based on efficiency ratings. Labor typically represents 30-40% of equipment cost. Regional multipliers adjust for local market conditions, with costs varying 10-25% across regions.
Default demo (2000 sq ft, 95% AFUE + 16 SEER): equipment $10,800, labor $3,780 (35% of equipment), ducts $1,350, permits $350 → $16,280 total, ~2 day(s) install, ~$955/yr illustrative savings vs assumed old 65% AFUE / 10 SEER equipment.
Furnace efficiency is measured by AFUE (Annual Fuel Utilization Efficiency), indicating what percentage of fuel is converted to heat. AC efficiency is measured by SEER (Seasonal Energy Efficiency Ratio), representing cooling output per unit of energy. Higher ratings mean better efficiency but higher upfront costs, balanced by lower energy bills and potential rebates.
Need help with other HVAC projects? Check out our mini split sizing calculator and ductwork replacement calculator.
Get Custom Calculator for Your PlatformResult: $16,280 total with $1,300 potential rebates
Estimated $955/year energy savings • 2 day installation
1,800 sq ft • 95% AFUE • South • good ducts
$7,970 estimated
2,200 sq ft • 18 SEER • Northeast • minor ducts
$13,740 estimated
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