Replacing a furnace and central air conditioner at the same time typically costs $6,000-$18,000 depending on equipment size, efficiency, installation complexity, and region. The combined replacement price is driven by unit capacity (tons/BTU), AFUE/SEER ratings, ductwork condition, and labor rates.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Complete Furnace + AC Swap | $6,000 | $10,500 | $18,000 | Assumptions: typical 1,800–2,400 sq ft home, 2–3 ton AC, 80%–95% AFUE furnace, standard ductwork. |
Total Cost To Replace Furnace And AC Together For A Typical Home
Most homeowners pay $6,000-$18,000 for simultaneous replacement; $9,000-$12,000 is common for a 2–2.5 ton AC with a 90% AFUE furnace.
Lower end ($6,000-$8,000): basic 2-ton AC (13–14 SEER) + 80% AFUE furnace, contractor labor in lower-cost regions, minimal ductwork. Average ($9,000-$12,000): 2–2.5 ton AC (14–16 SEER) + 90% AFUE furnace, moderate duct repairs, typical suburban installation. High end ($13,000-$18,000+): 3+ ton AC (18+ SEER or variable-speed), 95%+ AFUE furnace or modulating gas furnace, significant duct replacement, complex roof/attic access.
Line-Item Quote Breakdown: Materials, Labor, Equipment, Permits
| Component | Low | Average | High | Notes |
|---|---|---|---|---|
| Equipment (AC Condenser + Coil + Furnace) | $3,500 | $6,000 | $12,000 | Per combined set; higher for high-SEER/AFUE models and brand premium. |
| Materials (thermostat, flue, refrigerant, filters) | $150 | $450 | $1,200 | Includes smart thermostat and premium filters at high end. |
| Labor | $1,200 | $2,500 | $4,500 | Typical 10-20 hours, $75-$125 per hour. |
| Ductwork Repair/Modification | $300 | $1,200 | $6,000 | Minor sealing vs full trunk/branch replacement. |
| Permits & Inspections | $50 | $250 | $800 | Local code and gas line permits vary by city/county. |
| Disposal/Removal | $75 | $250 | $600 | Old unit haul-away and refrigerant recovery. |
Equipment and labor usually represent the largest line items, making up roughly 70%-85% of the total combined price.
How Tonnage, SEER And AFUE Strongly Affect The Final Quote
AC tonnage and furnace BTU/AFUE are primary cost drivers: upgrading from 2.0 to 3.5 tons can add $1,500-$4,000 in equipment and labor; moving from 80% to 95% AFUE furnace often adds $800-$2,000. Choose capacity and efficiency based on home size: 1,200–1,600 sq ft = ~1.5–2.0 tons; 1,800–2,400 sq ft = ~2.0–2.5 tons; 2,500+ sq ft often needs 3+ tons.
Additional numeric thresholds: SEER 14–16 is midrange; SEER 18+ variable-speed increases equipment cost by $1,000-$3,500. AFUE under 85% vs 95%+ condensing furnaces differ by $800-$2,000 and may require different venting.
Practical Ways To Reduce The Combined Replacement Price
Timing, scope, and material choices control cost: scheduling in shoulder seasons (spring/fall) can reduce labor premiums by 5%-15%; accepting mid-efficiency units (14–16 SEER, 90% AFUE) lowers equipment costs without sacrificing large energy gains. Get at least three written quotes that separate equipment, labor, ductwork, and permits to compare exact line items.
Other practical steps: prepare the site (clear attic/utility room access), keep existing compatible coils if allowed, and bundle HVAC, gas line, and electrical work with one contractor to avoid overlapping overtime charges.
How Region And Market Type Shift Prices Across The U.S.
Regional price deltas: metropolitan coastal areas often charge 10%-30% more than Midwest/rural markets; humid Southeast demand can raise AC pricing by 5%-15% during summer peak. Expect roughly -15% in low-cost rural Midwest vs +20% in high-cost coastal metro areas for the same equipment.
| Region Type | Typical Price Delta | Reason |
|---|---|---|
| Rural Midwest | -10% to -20% | Lower labor and overhead costs |
| Sun Belt / Southeast | +0% to +15% | Higher AC demand and peak-season premiums |
| Coastal Metro (NE, West Coast) | +10% to +30% | Higher wages, permitting, and permit inspections |
Typical Job Time, Crew Size, And Labor Rate Expectations
Standard simultaneous replacement takes 8–18 hours with a 2–3 person crew; labor rates usually fall in $75-$125 per hour per technician, producing 10-30 total labor hours for a standard 2–3 ton swap.
Complex installs (full duct replacement, roof-mounted condenser, oil-to-gas conversion) can push the job to 2–3 days and double labor hours. Use the labor_hours × hourly_rate span to estimate labor portion from your quoted hours.
Three Real-World Quote Examples With Specs And Totals
| Example | Specs | Labor Hrs | Per-Unit/Unit Rates | Total |
|---|---|---|---|---|
| Basic Suburban | 2.0 ton AC (14 SEER) + 80% AFUE furnace, minor duct sealing | 12 | Equipment $4,000; Labor $1,200 | $5,500-$6,500 |
| Average Remodel | 2.5 ton AC (16 SEER) + 90% AFUE furnace, some duct mods | 18 | Equipment $6,500; Labor $2,700 | $9,000-$11,000 |
| High-Efficiency Upgrade | 3.0+ ton (18 SEER, variable) + 95% AFUE modulating furnace, new duct trunk | 30 | Equipment $12,000; Labor $3,750 | $15,000-$19,000+ |
These examples reflect normal access and no major structural or code surprises; specific site conditions can change totals substantially.