The Lennox Signature Series price varies by model, capacity, efficiency, and installation complexity; buyers typically pay $4,000-$14,000 for the unit and $2,000-$6,000 to install. Assumptions: single-family home, standard ductwork, U.S. labor markets.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Single-Stage Furnace/AC Package | $4,000 | $8,500 | $14,000 | Includes mid-sized home, 2-3 ton system |
| Unit Only (High-Efficiency Model) | $3,000 | $6,500 | $11,000 | Varies by SEER/AFUE and model |
| Installation | $2,000 | $3,500 | $6,000 | Includes labor, permits, basic hookups |
Typical Total Price for a Lennox Signature Series System
Most homeowners pay a bundled total for both outdoor and indoor equipment plus installation; common totals run $6,000-$18,000 depending on capacity and options. Assumptions: 1,800-2,500 sq ft home, 2-4 ton split system, standard AFUE/SEER.
A reasonable budget for a complete Signature Series replacement is $8,500-$12,500 in many U.S. metro areas.
Cost Breakdown by Materials, Labor, Permits, and Warranty
| Component | Materials | Labor | Permits | Warranty |
|---|---|---|---|---|
| Condenser/Outdoor Unit | $1,800-$6,000 | $300-$800 | $0-$150 | $0-$400 (extended) |
| Indoor Furnace/Air Handler | $1,200-$5,000 | $500-$1,200 | $0-$150 | $0-$300 |
| Controls/Thermostat | $100-$700 | $75-$200 | $0 | $0-$100 |
| Ductwork/Modifications | $200-$3,000 | $600-$2,000 | $0-$100 | $0 |
Materials are often 40%-60% of the total quote while labor, permits, and warranties make up the rest.
How Unit Size (Tonnage) and SEER Rating Change the Price
Price increases predictably with tonnage and SEER: a 2-ton unit costs roughly $3,500-$7,500, 3-ton $4,200-$9,000, 4-ton $5,000-$11,000; LEV/SEER bump adds $500-$3,500. Assumptions: standard installation without custom sheet metal.
Upgrading from 14 SEER to 20+ SEER typically raises the unit price by $1,000-$3,000 depending on model and rebate availability.
What Site Conditions or Specs Drive the Final Quote
Long refrigerant run (>50 ft), high static ducts, or need for a 2-stage furnace can add $600-$3,500. Replacing existing undersized ducts or adding a second zone runs $1,000-$5,000. Numeric thresholds: runs over 50 ft, duct additions over 50 linear ft, SEER change over 3 points.
Restricted access or multistory installations commonly add $400-$1,200 in labor and equipment fees.
Practical Ways to Reduce the Lennox Signature Series Price
Keep the existing ductwork in good condition, choose a mid-range SEER, schedule replacement in shoulder seasons, and get three written quotes. Assumptions: homeowner can prep space and remove minor obstacles.
Avoiding unnecessary duct replacement and timing work for spring/fall can lower total cost by 10%-20%.
Regional Price Differences and What To Expect Across States
| Region | Typical Total | Delta vs. National |
|---|---|---|
| Northeast (urban) | $9,500-$15,000 | +10% to +25% |
| Midwest | $7,500-$12,000 | -5% to +5% |
| South | $6,500-$11,500 | -10% to 0% |
| West (coastal) | $9,000-$16,000 | +5% to +30% |
Labor and permit fees explain most regional deltas; coastal and high-cost metro areas trend higher.
Installation Time, Crew Size, and Typical Add-On Fees
Standard replacement takes 6-12 hours with a 2-3 person crew; complex jobs span 1-3 days. Typical add-ons: disposal $75-$350, surge protection $150-$450, condensate pumps $200-$500.
Expect a minimum job charge of $400-$750 for service call/diagnostic on non-scheduled installs.
Three Real-World Quote Examples With Specs and Totals
| Scenario | Specs | Labor Hours | Unit Cost | Total |
|---|---|---|---|---|
| Small Home Replace | 2-ton, 16 SEER, basic furnace | 8 | $4,200 | $7,000 |
| Average Family Home | 3-ton, 18 SEER, mod. ducts | 12 | $6,800 | $11,200 |
| High-End Upgrade | 4-ton, 20+ SEER, zoning, new ducts | 24 | $10,500 | $17,500 |
These examples reflect typical contractor quotes including basic permit and disposal fees.