Across the U.S., a 5-ton gas furnace typically costs a few thousand dollars for the unit alone, with total project costs driven by installation, ductwork, and efficiency upgrades. The main price levers are AFUE rating, installation complexity, and any required venting or air-handler changes. Cost estimates usually include equipment plus labor, with additional charges for permits, disposal, and potential repairs to existing ductwork.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| 5-Ton Furnace Unit | $1,800 | $3,200 | $4,800 | Gas furnace, 80%–98% AFUE ranges |
| Installation Labor | $1,200 | $2,200 | $3,800 | Rig and refrigerant not applicable; includes flame sensor, ignition, wiring |
| Duct Modifications | $500 | $2,000 | $4,000 | New runs or sealing, minimal to extensive work |
| Permits & Inspections | $50 | $300 | $1,000 | Local jurisdiction varies |
| Delivery/Removal & Disposal | $100 | $400 | $1,000 | Old unit haul-away not always included |
| Materials & Accessories | $200 | $800 | $2,000 | Filters, vent caps, thermostats, venting components |
| Taxes & Overhead | $150 | $450 | $900 | Sales tax and business overhead |
| Contingency | $100 | $500 | $1,000 | Projected for unforeseen needs |
Overview Of Costs
Assumptions: regional prices, standard 5-ton gas furnace, mid-range AFUE, no major ductwork repairs, single-story home. The total project range typically spans from roughly $3,000 to $11,000, depending on efficiency tier and installation complexity. A mid-range install often lands near $5,500-$8,000, while high-end setups with extensive ductwork or high-efficiency models can exceed $9,000-$11,000. Per-unit pricing for the furnace itself generally runs $1,800-$4,800, with labor and ancillary costs adding substantially to the total.
Cost Breakdown
| Component | Low | Average | High | Notes |
|---|---|---|---|---|
| Materials | $200 | $800 | $2,000 | Filters, duct tape, adapters, sensors |
| Labor | $1,200 | $2,200 | $3,800 | Install, wiring, venting; data-formula=”labor_hours × hourly_rate”> |
| Equipment | $1,800 | $3,200 | $4,800 | Furnace model and efficiency |
| Permits | $50 | $300 | $1,000 | Local permit requirements |
| Delivery/Disposal | $100 | $400 | $1,000 | Old unit haul-away |
| Warranty | $0 | $200 | $600 | Extended coverage options |
| Overhead & Taxes | $150 | $450 | $900 | Business costs and tax |
| Contingency | $100 | $500 | $1,000 | Unforeseen issues |
What Drives Price
AFUE rating and installation complexity are the primary price levers. Higher-efficiency furnaces (90%+ AFUE) cost more upfront but may save energy over time. Heat exchanger type, such as indirect or direct venting, also impacts cost. A unit with complex venting or a retrofit to accommodate a new chimney can add to the budget.
Other important drivers include ductwork condition, home size versus furnace capacity, and whether a complete system upgrade (air conditioner, thermostat, or zoning) is bundled. Assumptions: basic single-family home, standard duct layout, no gas-line upgrades.
Regional Price Differences
Prices vary by region due to labor costs, permits, and fuel prices. In the Northeast, expect higher installation labor; the West Coast may see higher permitting and material costs. The Midwest often provides the most competitive labor rates, while the South tends to be at or just above the national average. Regional deltas can range ±15% to ±25% from the national average depending on local conditions.
Labor, Hours & Rates
Typical labor rates for furnace installation range from $70 to $130 per hour, with total install hours commonly 6–14 hours for standard jobs. Highly complex retrofits or attic/crawlspace work can push hours well beyond that. Assumptions: crew of 2–3 installers, standard equipment list. The formula data-formula=”labor_hours × hourly_rate”> illustrates how labor cost scales with time and rate.
Additional & Hidden Costs
Hidden or extra charges may include venting kit upgrades, electrical panel improvements, gas line upgrades, or higher-energy testing fees. Some contractors charge for diagnostics when troubleshooting efficiency issues or equipment compatibility problems. Delivery surcharges and dumpster fees can appear on the final bill in some markets.
Real-World Pricing Examples
Three scenario cards illustrate common outcomes for a 5-ton furnace project:
- Basic – 5-ton gas furnace, 80% AFUE, limited duct work, standard installation: Specs: unit $1,900; labor 1,800; materials 450; permits 150; total around $4,300.
- Mid-Range – 5-ton, 90% AFUE, moderate duct upgrades, new thermostat: Specs: unit $3,000; labor 2,200; materials 800; permits 250; disposal 350; total around $6,600.
- Premium – 5-ton, 96%–98% AFUE, extensive duct rerouting, enhanced warranty, smart home integration: Specs: unit $4,500; labor 3,500; materials 1,200; permits 600; disposal 500; integration 550; total around $11,850.
Assumptions: single-family home, standard attic installation, no structural repairs, local permit issued.