Most homeowners replacing a gas furnace and central air ask about gas AC unit prices upfront. Typical total costs range from $3,500 to $15,000 depending on equipment size, SEER and AFUE ratings, ductwork condition, and regional labor rates.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Full furnace + central AC replacement | $3,500 | $8,500 | $15,000 | Assumptions: 2–3 ton AC, 80%–95% AFUE furnace, midrange SEER, typical single-family home. |
| AC unit only (per ton) | $800 per ton | $1,300 per ton | $2,500 per ton | Installed, includes condenser and coil |
| Gas furnace only | $1,200 | $3,500 | $6,500 | Includes labor, venting updates |
Typical Total Price For A Gas Furnace + Central AC Package
Full replacement of a gas furnace plus a matched central AC commonly costs $3,500-$15,000 total; most homeowners pay about $8,500 for a midrange 2–3 ton system. Expect lower prices for simple like-for-like swaps and higher prices for high-efficiency equipment, complex ductwork, or multi-story homes.
Assumptions: Midwest labor rates, standard materials, normal access.
Breakdown Of Materials, Labor, Equipment And Fees
This section splits a typical quote into core cost lines so readers can compare estimates line-by-line. Seeing each component helps spot overpriced labor or bundled markups.
| Materials | Labor | Equipment | Permits | Delivery/Disposal |
|---|---|---|---|---|
| $700-$3,500 (coils, refrigerant, ducts) | $800-$3,000 (installation crew) | $1,500-$8,000 (condensers, furnaces) | $50-$400 | $75-$500 |
How Capacity, SEER, And AFUE Change The Final Quote
System size, SEER rating for the AC, and AFUE for the furnace are the largest spec-driven price drivers. Each additional half-ton of AC capacity typically adds $400-$900 to the installed price; moving from 14 SEER to 16 SEER adds about $600-$1,200; upgrading furnace AFUE from 80% to 95% adds $500-$1,500.
Other numeric thresholds: line set runs over 50 feet add $150-$600; duct replacement for >1,000 sq ft adds $2,000-$6,000.
Cost-Saving Choices When Replacing A Gas AC System
Buyers can reduce the gas AC unit price by controlling scope and scheduling. Choosing a 14–15 SEER unit instead of top-tier SEER, keeping existing ductwork intact, and scheduling during off-peak seasons can cut the total by 10%–25%.
- Accept a matched but non-premium brand to save $700-$2,000.
- Complete homeowner prep (clear access, remove furniture) to reduce labor time and fees.
- Bundle furnace and AC with one contractor to lower markup and warranty stacking costs.
Regional Price Differences Between Metro, Suburban, And Rural Markets
Geography changes final pricing significantly; expect metro labor premiums and rural travel fees. Typical deltas: urban prices +10%–25% over national average, rural prices -5%–10% but may include minimum travel charges.
| Market | Typical Adjustment | Example |
|---|---|---|
| Urban/Metro | +10% to +25% | $9,350 average for a $8,500 baseline |
| Suburban | +0% to +10% | $8,500-$9,350 |
| Rural | -5% to +5% (with travel fees) | $7,650 average before travel surcharge |
Common Add-Ons And Extra Fees That Raise Final Price
Unexpected extras are frequent on final invoices: extended refrigerant lines, electrical subpanels, permit upgrades, setback thermostats, and condensate pumping. Budget $300-$2,500 for typical add-ons; major electrical or structural changes can exceed $3,000.
- Refrigerant overcharge or conversion (R-22 to R-410A) $600-$2,000.
- Electrical panel upgrade $800-$3,000.
- Condensate pump or drain repairs $150-$600.
Three Real-World Quote Examples With Specs And Totals
Sample quotes help translate ranges into realistic jobs. Each example lists equipment, labor hours, per-unit costs, and the final installed price.
| Scenario | Specs | Labor | Per-Unit Rates | Total |
|---|---|---|---|---|
| Budget Swap | 2 ton, 14 SEER AC + 80% AFUE furnace | 8-12 hours | AC $1,600; furnace $1,200 | $3,500-$4,200 |
| Midrange | 3 ton, 16 SEER AC + 95% AFUE furnace | 12-20 hours | AC $4,000; furnace $3,000 | $7,500-$9,500 |
| High-End | 3.5 ton, 20 SEER AC + 98% AFUE furnace, ducts redone | 20-40 hours | AC $6,500; furnace $4,500 | $12,000-$15,000 |