Most U.S. homeowners pay between $6,000 and $14,000 to install a matched central air conditioner and gas furnace; final cost depends on system size, efficiency, ductwork, and labor. This AC and furnace installation cost article breaks down typical totals, per-unit rates, major line items, regional variation, and practical ways to lower the price.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Complete AC + Furnace System | $4,500 | $9,500 | $18,000 | Assumptions: 2-3 ton AC, 60k–80k BTU furnace, standard ductwork, suburban labor |
| AC Unit (condensing unit) | $2,000 | $3,800 | $7,500 | $1,200-$3,500 per ton |
| Furnace (gas, mid-efficiency) | $1,200 | $3,500 | $7,000 | $600-$1,800 per 10k BTU |
| Ductwork Repair/Replacement | $1,000 | $3,500 | $10,000 | Depends on square footage and access |
Typical Total AC and Furnace Installation Prices
A typical matched central AC and gas furnace replacement for a 1,500–2,500 sq ft home costs $6,000-$12,000 total. Lower-cost jobs replace like-for-like equipment with minimal ductwork; higher costs include high-efficiency units, new thermostats, and duct replacement. Assumptions: contractor installed, standard single-story home, moderate climate.
Per-unit ranges: AC condensing units commonly run $1,200-$3,500 per ton; furnaces run $600-$1,800 per 10k BTU for equipment cost only. Installation labor and miscellaneous materials typically add $1,500-$5,000 to totals.
Breakdown of Materials, Labor, and Equipment Costs
Breaking the quote into components helps compare bids and spot upcharges.
| Cost Component | Low | Average | High | Typical Role |
|---|---|---|---|---|
| Materials | $1,800 | $5,000 | $12,000 | Units, coils, thermostats, filters |
| Labor | $1,000 | $2,500 | $6,000 | Installation, gas hookup, electrical |
| Equipment | $300 | $900 | $2,500 | Hoists, vacuum pumps, charging gauges |
| Permits | $50 | $250 | $900 | Local building and gas permits |
| Delivery/Disposal | $100 | $400 | $1,200 | Old unit removal, disposal fees |
| Contingency & Overhead | $250 | $800 | $2,000 | Contractor markup, warranty handling |
How System Size, SEER, and AFUE Change the Quote
System capacity and efficiency are the strongest price levers: larger tonnage and higher SEER/AFUE ratings increase equipment cost significantly.
Examples with thresholds: moving from a 2.5-ton to 3.5-ton AC typically adds $700-$2,000 in unit cost. Upgrading SEER from 14 to 20 often adds $1,200-$3,500. Upgrading furnace AFUE from 80% to 98% commonly adds $800-$2,000.
Other numeric drivers: long refrigerant line sets over 25 ft typically add $150-$600; complex venting for high-efficiency furnaces can add $300-$900.
Practical Ways To Reduce Your HVAC Installation Price
Control scope and timing to lower cost: repair duct leaks instead of full replacement, accept mid-efficiency equipment, and schedule during shoulder seasons.
Specific tactics: get three written quotes, bundle AC and furnace in one contract for contractor efficiency, and provide clear access to mechanical areas to reduce labor hours. Replacing only one component vs. both may save $2,000-$6,000 now but can increase operating costs long term.
Regional Differences That Affect Installer Quotes
Labor rates and markup vary: expect 10%-30% higher prices in coastal metro areas versus inland or rural markets.
Typical deltas: urban coastal areas (NY, SF, LA) +20%-30% vs. national average; Sun Belt metros (Houston, Phoenix) ±0%-10%; rural areas -10%-20%. Permit and inspection fees may add another $100-$800 depending on locality.
Common Add-Ons, Prep Work, and Extra Fees
Budget separately for common extras like line set replacement, new thermostat wiring, and condensate pumps.
| Add-On | Low | Average | High |
|---|---|---|---|
| Line set replacement (per run) | $200 | $600 | $1,500 |
| Smart thermostat install | $75 | $200 | $450 |
| Condensate pump | $150 | $350 | $800 |
| Electrical panel or circuit upgrade | $400 | $1,200 | $3,000 |
| Emergency or rush install | $300 | $800 | $2,000 |
Sample Real-World Quotes With Specs and Totals
Three example bids illustrate how specs and site conditions produce different totals.
| Scenario | Specs | Labor Hours | Per-Unit Rates | Total |
|---|---|---|---|---|
| Basic Replace | 2.5-ton AC (14 SEER) + 80k BTU furnace, like-for-like ducts | 10-14 hours | AC $2,200, Furnace $1,600 | $4,500-$6,200 |
| Mid Upgrade | 3-ton AC (16 SEER) + 95% AFUE furnace, minor duct repair | 16-24 hours | AC $3,800, Furnace $3,200 | $7,500-$10,500 |
| Full Replace | 3.5-ton AC (20 SEER) + 98% AFUE furnace, new ducts | 24-40 hours | AC $6,500, Furnace $6,800 | $12,500-$18,000 |