AC Unit Cost Calculator - Size & SEER Rating
Central Air Conditioner Replacement Cost Calculator by Tonnage
Calculate your exact AC replacement cost based on unit size (tonnage) and efficiency (SEER rating). The tool layers in regional HVAC labor rates, ductwork allowances, and projects potential energy savings from upgrading to higher SEER ratings.
Updated SEER2-compliant equipment pricing and 2025 utility rebate assumptions.
Key Takeaways
- Central AC replacement costs $3,500-$7,500 for most homes
- Proper sizing is critical - 1 ton per 400-600 sq ft is a rough guide
- Higher SEER ratings save money long-term but cost more upfront
- Installation quality affects efficiency more than SEER rating
- Spring/fall installation often 10-20% cheaper than summer emergency
AC Unit Cost Calculator - Size & SEER Rating
Calculate your exact AC replacement cost based on unit size (tonnage) and efficiency (SEER rating). The tool layers in regional HVAC labor rates, ductwork allowances, and projects potential energy savings from upgrading to higher SEER ratings.
Project Details
Estimated Cost Range
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Enter your project details above to get an instant cost estimate
Cost Analysis
Calculate project costs to view breakdown analysis
Market Price Trends
💡 Consider purchasing soon - prices expected to continue rising
Best Purchase Timing
📅 Higher prices during summer peak demand
Available Incentives
🎯 Energy-efficient equipment tax credits, regional rebate programs
Expert Recommendations
Budget an additional 10-15% for unexpected costs
Get multiple quotes to ensure fair pricing
Verify contractor licenses and insurance
Consider applying for local energy efficiency rebates
Next Steps Guide
Data-Driven Estimates
Our calculations are based on real market data from thousands of completed projects across the US.
View MethodologyImportant Estimate Disclaimer
This estimate is based on national averages and may vary significantly based on your location, specific requirements, and market conditions. Always get multiple quotes from licensed contractors for your specific project.
What Affects AC Unit Cost Costs - Size & SEER Rating?
Unit Size
40-50% impact - 2 ton vs. 5 ton
SEER Rating
20-30% - 14 SEER vs. 20+ SEER
Installation
30-40% - Simple vs. complex ductwork
Brand
15-25% - Standard vs. premium brands
Location
10-20% - Regional climate and labor
Ductwork
0-50% additional - Repairs vs. replacement
Average AC Unit Cost - Size & SEER Rating Pricing Guide
| Size | 14 SEER | 16 SEER | 20 SEER |
|---|---|---|---|
| 2 Ton (800-1,000 sq ft) | $3,500 | $4,550 | $5,600 |
| 3 Ton (1,200-1,800 sq ft) | $4,500 | $5,850 | $7,200 |
| 4 Ton (1,800-2,400 sq ft) | $5,500 | $7,150 | $8,800 |
| 5 Ton (2,400-3,000 sq ft) | $6,500 | $8,450 | $10,400 |
*Prices are estimates and vary by location, contractor, and specific project requirements
Frequently Asked Questions About AC Unit Cost Costs - Size & SEER Rating
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Read Full GuideHow to Use This AC Unit Cost Calculator - Size & SEER Rating
- 1 Select your location for accurate regional pricing
- 2 Enter your project specifications (size, materials, etc.)
- 3 Review instant cost estimate with price range
- 4 Download or share your estimate for contractor quotes
💡 Pro Tip: Save your calculation URL to compare different scenarios or share with contractors for more accurate quotes.
Methodology & Data Sources
Expert review: Alex Ortega, Licensed HVAC Technician (verified October 13, 2025)
- • Air Conditioning Contractors of America (ACCA) national pricing trends 2025
- • Department of Energy SEER2 efficiency guidance 2025
- • Bureau of Labor Statistics 2025 HVAC technician wage data
Want to learn more about how estimates are built? Read our data methodology guide for the full modeling framework.
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