Homeowners typically pay a combined cost for replacing a gas furnace and air conditioner, driven by system size, efficiency, labor, and installation complexity. This guide presents cost estimates in ranges and outlines where money goes in a typical retrofit.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Furnace (Gas) | $2,500 | $4,000 | $6,000 | Includes unit and basic venting; SEER equivalent not applied here |
| AC Condensing Unit (Rooftop/Central) | $2,500 | $4,000 | $6,000 | Standard 14-16 SEER; higher efficiency increases price |
| Labor & Installation | $1,000 | $2,500 | $4,000 | Varies by climate, crew size, and system compatibility |
| Permits & Inspections | $100 | $500 | $1,000 | Local rules may require gas line and vent permits |
| Delivery/Disposal | $50 | $250 | $600 | Old equipment removal; refrigerant disposal where applicable |
| Misc. Accessories & Charge | $100 | $300 | $800 | Thermostats, filters, and refrigerant charges |
| Warranty & Overhead | $150 | $350 | $750 | Manufacturer warranties and contractor overhead |
| Total Installed Range | $6,400 | Typical range $6,400–$15,000 depending on size and efficiency | ||
Assumptions: region, system size (tonnage), SEER efficiency, and typical 2–3 day installation window.
Overview Of Costs
Cost ranges reflect common residential replacements in the United States. A mid-range gas furnace and air conditioner combo with standard efficiency typically costs around $6,000–$10,000 installed, while high-efficiency systems can exceed $12,000–$15,000 depending on equipment and permits. Per-unit estimates often break out as $2,500–$4,000 for the furnace and $2,500–$4,000 for the AC condenser, plus $1,000–$2,500 for labor.
Assumptions: full replacement, existing ductwork compatible, no major duct reinforcements, standard installation materials.
Cost Breakdown
Below is a practical breakdown showing where money goes. The table uses total costs plus per-unit context for quick budgeting.
| Category | Low | Average | High | Notes |
|---|---|---|---|---|
| Materials | $4,000 | $6,000 | $9,000 | Furnace + AC unit core components |
| Labor | $1,000 | $2,500 | $4,000 | Removal, installation, wiring, gas line work |
| Permits | $100 | $500 | $1,000 | Local inspections and gas code compliance |
| Delivery/Disposal | $50 | $250 | $600 | Removing old units, refrigerant handling |
| Warranty | $150 | $350 | $750 | Labor and parts coverage from installer |
| Tax & Overhead | $100 | $300 | $600 | Administrative costs and taxes |
| Subtotal | $5,400 | |||
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Factors That Affect Price
System size and efficiency drive major cost differences. A 2.5–3 ton unit with 95+% AFUE furnace increases price versus a 1.5–2 ton, 80–90% AFUE setup. Higher SEER ratings and variable-speed blowers add equipment cost but reduce long-term energy bills.
Ductwork condition affects both material and labor. If ducts require sealing or resizing, expect higher costs. Venting complexity, gas line length, and appliance location also shift pricing.
Regional market matters. Weather patterns and labor availability create regional price differences, as shown in the regional section.
Ways To Save
Shop multiple quotes from HVAC licensed contractors to compare equipment packages and labor hours. In some markets, bundled pricing for furnace + AC with a single install crew offers savings over separate purchases.
Choose standard efficiency where appropriate if long-term energy budgets suffice; high-efficiency models offer savings but have higher upfront costs. Consider a mid-range SEER (14–16) to balance cost and performance.
Time installations in off-peak seasons can reduce labor costs in some regions. Scheduling during shoulder seasons may yield lower rates or more flexible timing.
Regional Price Differences
Three distinct U.S. regions show typical delta ranges. In the Northeast, higher labor costs and stricter permitting can push installed totals 5–12% above national averages. The Southeast often experiences moderate pricing, while the Midwest may see lower hardware costs but similar labor rates. Rural areas generally have lower delivery and labor charges, but logistics can offset savings.
Assumption: standard two-day installation, mid-range equipment, and typical permit requirements.
Real-World Pricing Examples
Three scenario cards illustrate practical quotes for a typical homeowner.
Basic scenario: 2-ton furnace and 13 SEER AC, standard efficiency. Labor 1.5 days; total installed around $6,400. Parts include standard furnace, standard condenser, basic thermostat, and standard venting.
Mid-Range scenario: 2.5-ton unit with 95% AFUE furnace and 16 SEER AC. Labor 2–3 days; total installed around $9,000–$12,000. Includes mid-range thermostat and enhanced air filtration.
Premium scenario: 3-ton, 18 SEER or higher with smart controls, enhanced air handling, and duct work refinements. Labor 3–4 days; total installed around $13,000–$15,000+. Includes extended warranties and refrigerant management.