Central Air Replacement Cost Estimator (2026)
Planning to replace just your central air conditioner? This guide provides accurate cost estimates for AC-only replacement, separate from furnace or full HVAC system costs.
Quick Answer
Central air conditioner replacement typically costs $5,000 to $12,000 for the outdoor condenser and indoor evaporator coil. This is AC-only pricing—if you need a matching furnace or air handler, expect $9,000-$18,000 total.
| Scenario | Typical Cost Range |
|---|---|
| AC-only replacement (existing coil compatible) | $5,000 - $8,000 |
| AC + new evaporator coil | $6,000 - $10,000 |
| High-efficiency AC (SEER2 16+) | $8,000 - $12,000 |
| AC + air handler (no furnace) | $7,500 - $14,000 |
Key Cost Factors for Central Air
Equipment efficiency (SEER2 rating):
- Standard efficiency (SEER2 14): Base pricing
- High efficiency (SEER2 16-18): +15% to +25%
- Premium efficiency (SEER2 20+): +30% to +50%
Tonnage (cooling capacity):
- 2-ton (small home/condo): $4,500 - $7,000
- 3-ton (1,500-2,000 sq ft): $5,500 - $9,000
- 4-ton (2,000-2,500 sq ft): $6,500 - $11,000
- 5-ton (2,500+ sq ft): $7,500 - $13,000
Additional considerations:
- Refrigerant type (R-410A vs. new R-454B): Minor cost difference in 2026
- Coil compatibility: New coils add $800-$1,500
- Line set replacement: $300-$600 if needed
Cost Drivers That Matter Most
| Driver | Typical Impact |
|---|---|
| SEER2 efficiency tier | +15% to +50% |
| Tonnage increase | +$500 to +$2,000 per ton |
| New evaporator coil | +$800 to +$1,500 |
| Electrical upgrades | +$300 to +$1,500 |
| Line set replacement | +$300 to +$600 |
Decision Framework
For AC-only replacement, use this rule: if your furnace is under 15 years old and your AC is 12+ years with major repairs needed, replacing just the AC makes sense. If both systems are aging, consider full system replacement for better efficiency matching.
FAQ
Is this an exact quote?
No. It is a planning estimate. Final pricing depends on contractor scope, equipment availability, and home-specific constraints.
Can tax credits materially change payback?
Yes. Credits and rebates can shorten payback by 1-4 years in many scenarios.
Should I replace ducts at the same time?
If leakage or sizing issues are significant, bundled replacement can improve comfort and performance.