The typical price for a Lennox central air conditioner and furnace combo depends on unit size, efficiency, and installation complexity. The main cost drivers are equipment efficiency, ductwork needs, and local labor rates. Price estimates often combine a planned equipment package with installation and permitting, so buyers should review all components to avoid surprises.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Equipment (AC + Furnace) | $3,800 | $6,200 | $9,800 | Includes Lennox mid-range models and basic features |
| Installation Labor | $2,000 | $3,800 | $6,000 | Includes removal of old unit and system test |
| Permits & Inspections | $100 | $350 | $1,000 | Local requirements vary by jurisdiction |
| Ductwork & Airflow Modifications | $500 | $2,000 | $4,000 | Dependent on existing duct condition |
| Delivery & Disposal | $100 | $350 | $800 | Includes old unit haul-away |
| Warranty & Extras | $50 | $350 | $1,000 | Extended options increase cost modestly |
Overview Of Costs
Typical cost range for a Lennox AC and furnace combo installed in the continental U.S. is roughly $6,000-$12,000. The per-unit estimates commonly fall in the $3,000-$6,000 equipment range for a mid-range system, plus $2,000-$4,500 for professional installation. Assumptions: two-zone comfort, standard ductwork, and a home under 2,500 square feet.
Cost Breakdown
Understanding where money goes helps compare bids. The table below shows the main cost categories and how they usually distribute.
| Category | Typical Range | Notes | Assumptions |
|---|---|---|---|
| Materials | $3,000-$6,000 | Furnace and AC unit, controls | Standard efficiency to mid-range SEER (16–18) |
| Labor | $2,000-$4,500 | Removal, installation, wiring, refrigerant | 4–6 crew hours per ton of cooling, typical ductwork |
| Equipment | $3,000-$6,000 | Units and accessories | Includes compressor, furnace blower, and coil |
| Permits | $100-$1,000 | Local code compliance | Municipal or county requirements |
| Accessories | $200-$1,000 | Thermostats, filters, humidifiers | Smart thermostat adds value |
| Warranty & Contingency | $50-$900 | Labor warranty, parts warranty | Extended options vary by installer |
Factors That Affect Price
Key price drivers include efficiency ratings, system size, and installation complexity. Lennox models range from 13 SEER to 20+ SEER, and single-family homes often need 3–4 ton units for cooling, with furnaces priced by input BTU and AFUE. Higher-efficiency equipment can raise upfront costs but lower long-term utility bills, while existing ductwork and attic access can add labor time and costs.
Ways To Save
Smart planning can reduce upfront costs without sacrificing performance. Consider pairing a mid-range Lennox package with a standard thermostat, compare full-system quotes rather than itemizing savings on each component, and schedule installation in slower months to potentially access off-season discounts. Also, check for local rebates or manufacturer promotions that may reduce net price.
Regional Price Differences
Prices vary by region due to labor markets and permitting. In the Northeast, higher labor rates can push installed costs 5–12% above national averages. The Southeast often sees lower installation fees but may incur higher cooling load surprises in extreme heat peaks. Rural areas may face travel fees but can gain lower labor costs, while urban centers frequently have the highest permit and disposal charges.
Real-World Pricing Examples
Three scenario cards illustrate typical bids for common homes.
Basic Scenario
Specs: Lennox system with standard 16 SEER AC, mid-range gas furnace, basic thermostat. Labor hours: 10–14. Totals: equipment $3,800; installation $2,100; permits $200. data-formula=”labor_hours × hourly_rate”> Overall: $6,100-$6,800.
Mid-Range Scenario
Specs: Lennox 18 SEER AC, 92% AFUE furnace, smart thermostat. Labor hours: 14–20. Totals: equipment $5,000; installation $3,600; permits $350. Overall: $9,000-$9,950. data-formula=”labor_hours × hourly_rate”>
Premium Scenario
Specs: Lennox high-efficiency 20+ SEER, variable-speed blower, enhanced filter system. Labor hours: 18–26. Totals: equipment $7,500; installation $5,000; permits $600. Overall: $13,000-$15,100. data-formula=”labor_hours × hourly_rate”>
Assumptions: region, specs, labor hours.
What Drives Price
Two niche drivers often impact totals significantly. HVAC: higher SEER ratings and larger tonnage increase equipment costs and may require ductwork adjustments. Roofing or attic constraints can complicate installation and drive labor hours. Plumbing or gas line rerouting in some homes may also affect the final price.
