Most U.S. homeowners replacing a furnace and central air pay between $5,500 and $12,000 total; the cost to replace furnace and central air depends on unit size, efficiency, duct condition, and installation complexity. Typical price drivers are equipment (furnace AFUE and AC SEER), labor, ductwork repairs, and permit requirements.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Full Furnace + Central Air Replacement | $4,500 | $8,500 | $15,500 | Includes equipment, basic duct reconnect, standard 2–3 ton split system |
| Furnace Only (gas, mid-efficiency) | $1,800 | $3,500 | $6,500 | Includes basic venting and hookup |
| AC Condenser & Coil Only (2–3 ton) | $2,000 | $4,500 | $8,000 | Excludes line set replacement in some cases |
Typical Total Price For Replacing Furnace And Central Air In A 1,800 sq ft Home
For a typical 1,500–2,000 sq ft U.S. single-family home with existing ductwork in fair condition, total replacement ranges are shown below. Most homeowners pay $6,000-$10,000 for standard mid-efficiency units and a straight swap install.
Assumptions: 80–95 AFUE furnace or 14–16 SEER AC, 2.5–3.5 ton system, accessible equipment location, no major sheet-metal duct rebuild.
| Scope | Total Low | Total Average | Total High |
|---|---|---|---|
| Direct Replacement (same size, same location) | $4,500 | $8,000 | $11,000 |
| Upgrade to High-Efficiency (95+ AFUE, 18+ SEER) | $7,000 | $11,500 | $15,500 |
| Replace + Major Ductwork Repair | $6,500 | $10,500 | $16,000 |
Breakdown Of The Main Quote Components
Typical contractor quotes separate equipment, labor, and disposal. Equipment usually accounts for 45–65% of the total project cost; labor and accessories make up most of the remainder.
| Materials | Labor | Equipment | Permits | Delivery/Disposal |
|---|---|---|---|---|
| $2,000-$7,500 | $1,200-$4,000 | $2,000-$8,000 | $50-$400 | $150-$800 |
How Unit Size, AFUE And SEER Ratings Change The Price
Choosing a larger capacity or higher-efficiency units raises equipment costs and may need duct resizing. Increasing furnace AFUE from 80 to 95 can add $800-$2,500; increasing AC from 13 to 18 SEER can add $1,200-$3,000.
Numeric thresholds: replacing with a 2.5 ton vs 3.5 ton system typically changes equipment cost by $600-$1,400; AFUE jumps at 90% and 95% are common price breakpoints.
Site Conditions That Often Add To Final Quotes
Hard-to-access units, long line sets, attic or roof installations, and combustion venting upgrades increase labor and equipment needs. Attic installs or rooftop condenser placement can add $700-$2,500 in labor and safety equipment fees.
Examples: long refrigerant run >30 ft often requires new line set ($300-$900); flue or chimney relining $400-$1,200.
Practical Ways To Lower The Replacement Price
Homeowners can reduce cost by timing replacements off-season, keeping the same equipment location, and choosing mid-efficiency models. Saving strategies commonly cut the total by 10–25% compared with immediate premium replacements.
- Keep existing duct layout and register locations to avoid sheet-metal work.
- Replace only failed components when possible (e.g., AC condenser) instead of full system.
- Obtain 3 written quotes and compare identical specs and warranty terms.
How Labor Time, Crew Size, And Typical Hours Affect The Quote
Installation duration varies by scope: straight swap 6–12 hours, full replace with duct repairs 12–30 hours. Expect technician hourly rates of $75-$125; total labor commonly runs $1,200-$3,800.
Assumptions: 2–3 person crew for complex installs, single tech for straightforward swaps.
Regional Price Differences And What To Budget By Market
Labor and permit fees move prices regionally: metropolitan and coastal markets run 10–25% higher than Midwest/rural areas. Budget $7,500-$10,500 in high-cost areas vs $5,000-$8,000 in lower-cost regions for the same mid-efficiency system.
| Region | Typical Range | Multiplier vs Midwest |
|---|---|---|
| Midwest/Rural | $4,500-$8,000 | 1.0× |
| Urban/Coastal | $6,500-$11,500 | 1.15–1.25× |
| Mountain/Small Metro | $5,500-$9,500 | 1.05–1.15× |
Common Add-Ons, Disposal Fees, And Code-Related Charges
Expect extra charges for recover/recycle of refrigerant, old-unit disposal, and required safety upgrades. Typical add-ons range $150-$1,200: refrigerant recovery $75-$250, disposal $75-$400, and safety/combustion air upgrades $200-$1,200.
- Permit fees $50-$400 depending on locality.
- System start-up and thermostat setup sometimes billed $75-$250.
Three Real-World Quote Examples With Specs And Totals
Example quotes help translate ranges into realistic budgets. The examples below reflect common combinations of equipment and site work.
| Scenario | Specs | Labor Hours | Total |
|---|---|---|---|
| Basic Swap | 80 AFUE furnace + 13 SEER, 2.5 ton, same location | 8–12 hrs | $4,800-$7,200 |
| Upgrade Efficiency | 95 AFUE furnace + 18 SEER, 3 ton, minor duct sealing | 12–18 hrs | $9,000-$12,000 |
| Full Replace + Duct Repair | 90 AFUE + 16 SEER, 3.5 ton, major ductwork | 20–30 hrs | $11,000-$16,000 |