Typical combined gas furnace and air conditioner replacement costs range from $5,000 to $15,000 depending on system size, efficiency, and installation complexity. This article spells out the price drivers, per-unit ranges, and ways to reduce the total cost for a U.S. home replacing both a gas furnace and central AC.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Combined Furnace + AC (typical single-family) | $5,000 | $9,500 | $15,000 | Assumptions: 2-3 ton AC, 80K-120K BTU furnace, standard ductwork, suburban market. |
| Furnace Only | $2,000 | $4,500 | $8,000 | Assumptions: mid-efficiency, 80K-120K BTU. |
| AC Condenser Only | $1,800 | $4,000 | $7,500 | Assumptions: 2-4 ton split system. |
| Labor (combined) | $750 | $2,500 | $5,000 | Assumptions: 8-20 hours, $75-$125 per hour. |
How Much Homeowners Typically Pay For Furnace And AC Replacement
Most U.S. homeowners replacing both systems pay between $5,000 and $12,000 for common configurations; high-efficiency matched systems can reach $15,000 or more. The average combined replacement price is about $9,500 for a 2-3 ton AC matched to an 80K–120K BTU gas furnace.
Assumptions: Midwest labor rates, standard materials, normal access.
Breaking Down The Quote: Materials, Labor, Equipment, Permits
Quotes usually split into parts: equipment (units), labor (installation), equipment rental or lift, permits, and disposal. Expect equipment to be 50%–70% of the total on average, with labor and permits making up most of the remainder.
| Materials | Labor | Equipment | Permits | Delivery/Disposal |
|---|---|---|---|---|
| $3,000-$9,000 | $750-$3,000 | $100-$800 | $50-$400 | $100-$600 |
| Furnace, AC condenser, evaporator coil | $75-$125/hr | Hoist, lift, refrigerant recovery | Mechanical permits, inspection fees | Old-system disposal, refrigerant recovery |
Which Variables Most Widely Change The Final Quote
Major variables include system size (tonnage), furnace BTU, and SEER/AFUE ratings. Increasing AC size from 2 tons to 4 tons typically raises equipment price by $1,200-$3,500 and labor by $200-$800.
Two niche-specific drivers: higher-efficiency SEER and AFUE. For example, upgrading from 13 SEER to 16 SEER adds about $800-$2,000; moving from 80% AFUE to 95% AFUE furnace adds $400-$1,500. Also, long refrigerant line sets over 25 linear feet often add $150-$600 and extra labor.
Practical Ways To Reduce The Total Replacement Price
Control scope: replace only what fails, avoid unnecessary upsells, and schedule off-season installs. Bundling furnace and AC in one contractor quote can cut labor overlap and reduce total cost by 10%–20% versus separate installs.
Other tactics: keep existing ductwork if it’s in good condition, choose standard efficiency instead of top-tier models, and get three competitive quotes. Preparing the site (clearing attic access, ensuring level pad) reduces labor hours and rush fees.
Regional Price Differences And What To Expect In Your Area
Prices vary by region: expect 5%–15% higher costs in coastal urban markets and 5%–10% lower in rural or lower-cost states. Northern states sometimes pay more for furnace labor; southern states trend higher for larger AC capacities.
| Region | Typical Combined Range | Delta vs. National |
|---|---|---|
| Northeast (urban) | $7,000-$14,000 | +10% to +25% |
| South | $5,000-$12,000 | -5% to +5% |
| Midwest | $4,800-$11,000 | -5% to +5% |
| West Coast | $6,500-$15,000 | +10% to +30% |
Installation Time, Crew Size, And Hourly Rates That Affect Price
Typical combined replacement takes 8–20 hours with a 2–4 person crew. Expect contractor hourly rates of $75-$125 per hour and total labor charges of $750-$3,000 for most homes.
Complex jobs—like coil replacement in tight rafters, new gas line runs, or major duct modification—add 4–12 hours and may require specialist labor charged at higher hourly rates.
Common Add-Ons, Permits, Disposal Fees, And Diagnostic Charges
Line set replacement, new thermostat, condensate pump, gas piping, and safety switches are common extras. Budget $150-$800 for line sets, $75-$300 for a smart thermostat, $200-$800 for gas line work, and $100-$600 for disposal and refrigerant recovery.
Permit costs vary by locality; typical mechanical permits range $50-$400. Diagnostic or service call fees for initial inspection may be $75-$150 and sometimes waived if contractor wins the job.