Homeowners typically pay for a new gas furnace and central air conditioner with installation, equipment, and optional add-ons. Main cost drivers include unit efficiency, system size (BTU/ton), ductwork, labor time, and local permit requirements. The following ranges help set expectations for a typical US project.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Gas furnace (new) | $2,400 | $4,000 | $7,000 | Includes installation; AFUE rating 80%–98% affects cost |
| Central AC unit (new) | $3,000 | $5,500 | $9,000 | Includes condenser; SEER 13–22 affects cost |
| Ductwork & modifications | $1,000 | $3,500 | $8,000 | Based on existing layout and needed runs |
| Labor & installation | $1,800 | $4,000 | $6,000 | Depends on crew size and time |
| Permits & inspections | $100 | $600 | $1,500 | Municipal fees may apply |
| Total project (furnace + AC) | $7,000 | $15,000 | $28,000 | Assumes mid-range efficiency and typical ductwork |
Overview Of Costs
Typical price range for a full gas furnace and air conditioner replacement is about $7,000 to $15,000, with higher-end setups exceeding $20,000 in some markets. The total price combines equipment costs, professional installation, and any necessary alterations. Per-unit pricing helps buyers compare options: furnace $2,400–$7,000; AC $3,000–$9,000; ductwork and labor collectively $2,800–$7,000. Assumptions: region, unit efficiency, and existing duct integrity.
Cost Breakdown
| Category | Low | Average | High | Notes |
|---|---|---|---|---|
| Materials | $3,400 | $6,000 | $10,000 | Furnace and condenser cost bands |
| Labor | $1,800 | $4,000 | $6,000 | Crew hours depend on house size |
| Equipment | $3,800 | $6,000 | $9,000 | AFUE 80%–98%, SEER 13–22 |
| Permits | $100 | $600 | $1,500 | Local code requirements |
| Delivery/Disposal | $0 | $300 | $1,000 | Old equipment haul-away |
| Warranty & Misc. | $100 | $400 | $1,000 | Labor warranties and parts |
What Drives Price
Efficiency ratings drive initial cost and long-term savings: AFUE for furnaces (80%–98%), SEER for AC (13–22). System size matters: larger homes require higher BTU/ton capacity, increasing equipment and duct costs. Ductwork condition, existing routes, and zoning add variability. Regional labor rates also shift totals, with urban areas typically higher than rural markets.
Ways To Save
Get multiple quotes and verify SEER/AHRI ratings to balance upfront cost and long-term energy bills. Consider installing a combined furnace/AC with compatible efficiency tiers to avoid mismatches. Pre-existing ductwork in good condition reduces new duct costs; add-on air quality features can be postponed. Seasonal promotions and off-peak scheduling can lower labor rates slightly.
Regional Price Differences
Prices vary by region due to labor markets and permitting. The East Coast tends to be higher than the rural Midwest, with the West showing substantial variation by city. In Northeast urban markets, expect higher installation labor and permit costs, while suburban and rural areas may offer modest discounts. Assumptions: region, house size, and system efficiency.
Labor & Installation Time
Typical installation takes 1–3 days depending on system complexity and ductwork changes. In homes with existing, well-maintained duct systems, labor costs skew toward equipment and permits. Longer install times raise labor estimates and can push total price higher by several hundred to thousands of dollars.
Additional & Hidden Costs
Hidden costs include refrigerant recharge if there are leaks, upgraded electrical panels, or duct sealing and insulation. Some homes require gas line upgrades or condensate drain modifications. Expect extra charges for refrigerant, disposal, or equipment upgrades beyond base quotes.
Real-World Pricing Examples
Three scenario cards illustrate common outcomes.
Basic — 2.5 ton AC, 80% AFUE furnace, standard ductwork; 4 labor hours; materials and equipment on the lower end. Total: about $7,000; per-unit averages: $2,400 furnace + $3,000 AC; additional ducting minimal.
Mid-Range — 3 ton AC, 95% AFUE furnace, moderate duct improvements; 1–2 days installation; mid-range components. Total: about $12,500; furnace $3,800–$4,800; AC $5,000–$7,000; ductwork $2,000–$3,500.
Premium — high-efficiency 4 ton system with enhanced air filtration and zoned ducting; full duct upgrades or replacements; complex installation. Total: about $20,000; furnace $6,500–$9,000; AC $8,000–$11,000; ducting $3,000–$6,000.
Assumptions: region, specs, labor hours.
Note: The estimates above reflect typical US pricing for standard single-family homes. They exclude major electrical upgrades, gas line work beyond basic connections, and significant structural modifications.
