The average cost of a new furnace and air conditioner combination typically ranges widely based on system size, efficiency, and installation complexity. Buyers planning replacement should expect combined pricing to reflect unit capacity (BTU/tons), SEER/AFUE ratings, ductwork work, and regional labor rates; this article lists realistic cost ranges and the main drivers affecting those prices.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Furnace + Central AC Replacement (complete) | $4,000 | $8,500 | $15,000 | Assumptions: 2,000 sq ft home, 80k BTU furnace, 3–3.5 ton AC, standard ducts, suburban Midwest. |
| Furnace Only | $1,500 | $4,000 | $9,000 | Assumptions: mid-efficiency, 60k–100k BTU, includes basic venting. |
| AC Only (condensing unit + coil) | $1,800 | $4,500 | $10,000 | Assumptions: 2–4 ton, 13–16 SEER, coil replacement required. |
| Ductwork Modification | $500 | $3,000 | $10,000 | Assumptions: partial to full duct rebuild, depends on accessibility. |
Typical Total Price To Replace Both Furnace And AC
Most homeowners pay between $6,000 and $12,000 for a full furnace and central AC replacement with standard equipment and typical access.
That range assumes a 1.5–3.5 ton AC matched to a furnace sized 60k–100k BTU for a 1,200–2,500 sq ft house, standard 14–16 SEER condenser, 80%–95% AFUE furnace, and 4–8 hours of labor for a two-person crew plus hookup time.
Assumptions: national median labor, matched equipment, straightforward roof/attic access.
How Installation Quotes Break Down By Materials, Labor, and Fees
Material costs often account for 45%–65% of the total quote while labor and misc fees fill the rest.
| Materials | Labor | Equipment | Permits | Delivery/Disposal |
|---|---|---|---|---|
| $2,500-$9,000 (units, coils, lines) | $1,200-$3,500 () | $0-$600 (lift/crane rental) | $0-$500 | $75-$500 (old unit haul) |
Materials include the furnace, outdoor condenser, coil, refrigerant, and controls; labor covers installation, testing, and minor duct sealing. Equipment row covers special rentals for tight access. Permit costs vary by city.
Which Technical Variables Drive The Final Quote
Unit capacity, efficiency rating, and duct condition are the top three variables that move price most.
Key numeric drivers: furnace size (50k–120k BTU), AC tonnage (1.5–5 tons), and SEER rating (13–20+). Upgrading from 14 SEER to 18 SEER typically adds $1,000-$3,000. Replacing undersized ducts or adding a full rebuild can add $2,000-$8,000.
Other thresholds: if the home requires a 3.5+ ton condenser or >90k BTU furnace, expect higher labor due to larger equipment and possible crane use.
Practical Ways To Reduce Replacement Price For Furnace And AC
Controlling system scope and timing reduces cost more reliably than price haggling.
- Keep matched basic-efficiency units (14–16 SEER / 80%–92% AFUE) to save $1,000–$3,000 versus high-efficiency models.
- Delay nonessential duct upgrades; do selective repairs instead of full replacement to save $1,000–$6,000.
- Schedule work in shoulder seasons (spring/fall) to avoid rush premiums—savings $200–$800.
- Provide clear access and remove obstacles to reduce labor hours.
How Regional Markets Change Prices Across The U.S.
Expect coastal and high-cost metro areas to run 10%–35% above national averages; rural areas are often 5%–15% below.
| Region | Typical Delta | Example Average |
|---|---|---|
| Northeast / NYC | +20%–35% | $10,200-$11,475 |
| Midwest / Suburban | ±0%–10% (median) | $7,650-$8,500 |
| South / Sunbelt | +5%–20% (summer demand) | $8,032-$10,200 |
| Rural / Low-cost markets | -5%–15% | $6,475-$7,650 |
Assumptions: percent deltas applied to the combined average price from the summary table.
Common Add-Ons, Removal Fees, And Site Complications That Raise Price
Expect separate charges for refrigerant recovery, complex venting, electrical upgrades, and old-unit disposal totaling $250–$2,500 extra.
- Refrigerant recovery / recharge: $150-$600 if required by code or leak repair.
- Electrical panel upgrade to support condenser: $800-$3,000.
- Full duct replacement or significant rerouting: $2,000-$10,000.
- Cranes or roof lifts for roof top installs: $300-$1,200.
Three Real-World Quote Examples With Specs And Pricing
Sample quotes illustrate how specs and site details change totals.
| Scenario | Specs | Labor Hours | Total Price |
|---|---|---|---|
| Basic Suburban Replacement | 80k BTU furnace, 3 ton AC, 14 SEER, minimal duct work | 10-14 hrs (2 crew) | $6,200-$7,800 |
| High-Efficiency Upgrade | 95k BTU furnace 95% AFUE, 3.5 ton AC 18 SEER, coil & thermostat | 12-18 hrs (2 crew) | $10,500-$14,000 |
| Full Duct + Unit Replacement | 80k BTU furnace, 3 ton AC, duct rebuild, attic access crane | 24-48 hrs (3 crew) | $12,000-$20,000 |
Each example assumes permit costs and minor electrical work included; larger electrical or structural changes are extra.