The cost to replace a gas furnace and air conditioner varies widely by efficiency, brand, and installation specifics. Typical price considerations include unit price, labor, ductwork, and permits. This guide presents cost ranges in USD and highlights what drives the final price.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Gas furnace (new) | $2,000 | $3,500 | $4,500 | Standard efficiency to mid-range efficiency models |
| Central AC (new) | $2,500 | $4,000 | $7,500 | 13–16 SEER typical; higher SEER increases cost |
| Labor & installation | $1,500 | $3,000 | $4,500 | Coverage for removal, mounting, hookups |
| Permits & inspections | $100 | $300 | $1,000 | Local requirements vary |
| Ductwork modifications | $500 | $2,000 | $5,000 | Depends on home layout and sealing |
| Delivery/Disposal | $50 | $200 | $500 | Old system haul-away may add cost |
| Total project (typical) | $6,150 | $12,000 | $23,000 | Assumes standard single-story home, moderate ductwork |
| Assumptions: region, specs, labor hours. | ||||
Overview Of Costs
Cost ranges reflect complete replacement of both a gas furnace and central air conditioner. The lower end covers a basic, mid-efficiency furnace paired with a standard 14–16 SEER AC, plus minimal ductwork. The average tier uses mid-to-upper efficiency components and modest duct modifications. The high end captures high-efficiency equipment (e.g., 95+ AFUE furnace and 17–20 SEER AC), plus significant ductwork, enhanced filtration, or complex installation.
Cost Breakdown
| Category | Low | Average | High | Notes |
|---|---|---|---|---|
| Materials | $2,000 | $3,000 | $5,500 | Furnace + condenser, coils, controls |
| Labor | $1,500 | $3,000 | $4,500 | Removal, installation, venting, electrical |
| Equipment | $2,000 | $3,500 | $6,000 | Furnace model, AC unit, refrigerant lines |
| Permits | $100 | $300 | $1,000 | Municipal, utility requirements |
| Delivery/Disposal | $50 | $200 | $500 | Old equipment removal |
| Total | $5,650 | $12,000 | $23,500 | Ranges shown with standard home |
Price Components
Key drivers include furnace AFUE rating, AC SEER rating, and any required ductwork or fan upgrades. data-formula=”labor_hours × hourly_rate”> In practical terms, a higher-efficiency system often adds 20–40% to the equipment cost but can reduce monthly energy bills.
Factors That Affect Price
Several variables move the final price up or down. System efficiency, brand, and warranty terms are primary. Extra costs arise from duct repairs, zoning upgrades, refrigerant type, and electrical panel upgrades. Regional demand and climate influence installation timing and pricing, while home accessibility can add minutes to labor hours.
Ways To Save
To reduce upfront costs, consider a stepwise approach: replace the furnace now and plan AC replacement later if the existing air handler is compatible. Bundling equipment purchases may unlock discounts or rebates. Shop for bundled unit quotes and compare total installed costs rather than unit prices alone.
Regional Price Differences
Prices vary by region due to labor supply, permit fees, and material shipping. In the Northeast, expect higher labor rates and potential ductwork complexity. The Midwest can balance with moderate costs and seasonal demand. The South may see lower installation times but higher cooling equipment demand during peak heat. Typical delta: +/- 10–25% from national averages.
Labor & Installation Time
Most combined replacements take 1–2 days for a standard home, with single-day install possible for simple setups. Large homes, limited access, or extensive ductwork can extend to 3–4 days. A typical crew comprises 2–3 installers, plus a technician for electrical work and refrigerant charging. Labor hours translate directly to total price.
Additional & Hidden Costs
Hidden costs can include refrigerant recharge, old system disposal, attic or crawlspace access flooring, and thermostat upgrades. Some jurisdictions require condenser line flushing or refrigerant reclaim fees. Unexpected duct sealing or humidity control add-ons may push the total higher. Budget contingencies of 5–10% are prudent.
Real-World Pricing Examples
Basic scenario: 14 SEER AC, mid-efficiency gas furnace, minimal ductwork, single-story home. Specs: furnace 60,000 BTU AFUE 80, AC 14 SEER. Labor 1.5 days. Total: around $6,000; $2,400 furnace + $2,700 AC; per-unit $2,000–$3,000 for furnace, $3,000–$4,000 for AC.
Mid-Range scenario: 95 AFUE furnace with 16 SEER AC, moderate duct adjustments, two-story home. Specs: improved filtration, smart thermostat. Labor ~2 days. Total: around $12,000; furnace $3,500–$4,500, AC $4,000–$6,000; per-unit $3,000–$5,000 (furnace) and $4,000–$7,000 (AC).
Premium scenario: High-efficiency furnace and 18–20 SEER AC, full duct reinforcement, zoning, high-efficiency air filtration. Significant electrical upgrades may be required. Labor ~3 days. Total: around $22,000–$25,000; furnace $5,000–$7,000, AC $8,000–$12,000; per-unit $6,000–$8,000 (furnace) and $8,000–$12,000 (AC).
