Lennox AC and furnace combo cost typically runs from $6,500 to $15,000 for a full replacement, with averages near $9,500 for a typical U.S. single-family home. Main drivers are system capacity, SEER/AFUE levels, installation complexity, and regional labor rates; this article focuses on realistic price ranges and line-item drivers so buyers can compare quotes.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Complete Lennox AC + Furnace Install | $6,500 | $9,500 | $15,000 | Assumptions: 2,000 sq ft, 3‑4 ton AC, 80%–95% furnace, normal access. |
| Premium Efficiency Package | $9,000 | $12,000 | $18,000 | High-SEER AC (≥18) + 95%+ AFUE furnace |
| Basic Replacement (like-for-like) | $4,500 | $7,000 | $10,500 | Minimal ductwork, standard labor |
Typical Lennox AC and Furnace Combo Price for a 2,000 Sq Ft Home
Buyers usually pay $6,500-$12,000 for a matched Lennox outdoor AC unit and indoor furnace installed in a typical 2,000 sq ft U.S. home. The most common range for mid-efficiency Lennox systems is $8,000-$10,500 installed.
Assumptions: 2.5–3.5 ton AC, 80%–95% AFUE furnace, standard ductwork, suburban installation.
Breakdown of Equipment, Labor, Permits, and Disposal in the Quote
| Component | Low | Average | High | Notes |
|---|---|---|---|---|
| Equipment (AC + Furnace) | $3,000 | $5,500 | $9,500 | Depends on SEER/AFUE and model line |
| Labor | $1,200 | $2,000 | $4,000 | 8–24 hours typical |
| Equipment/Tool Rental | $0 | $150 | $500 | Crane or lift for rooftop installs |
| Permits & Inspections | $75 | $200 | $800 | Local building and HVAC permits |
| Delivery/Disposal | $100 | $250 | $600 | Old unit removal, refrigerant recovery fees |
Equipment and labor usually make up about 80% of the total installed price for Lennox combos.
How SEER Rating, AFUE, and System Size Change the Final Quote
SEER and AFUE significantly shift price: moving from 14 SEER to 18+ SEER adds $1,200-$4,000; upgrading furnace AFUE from 80% to 95% adds $600-$2,000. System size: each ton of AC capacity typically adds $1,200-$2,200 to equipment cost.
Numeric thresholds to watch: 2–3 ton (small homes) vs 3–4 ton (2,000–3,000 sq ft) vs 4–5+ ton (large homes); 14–16 SEER vs 17–20+ SEER; 80% AFUE vs 90%–98% AFUE.
Practical Ways to Lower Lennox Combo Installation Price
Choose a mid-tier SEER/AFUE balance, keep existing ductwork if in good shape, and schedule off-peak installation. Bundling the AC and furnace as a matched Lennox package often reduces markup over buying separate units.
Other tactics: get 3–5 written quotes, accept contractor-supplied financing only after comparing rates, and prepare the site (clear access, remove obstacles) to minimize labor hours.
How Region and Setting Affect Prices (Coastal, Midwest, Urban vs Rural)
Expect regional deltas: coastal and high-cost urban areas are typically 10%-25% above Midwest averages; rural areas can be 5%-15% below urban rates but may include travel fees. Typical variation: $800-$2,500 difference between cheap and expensive metro markets.
Assumptions: Midwest average baseline used earlier; adjust by +15% for West Coast/NE metro, -10% for rural Midwest.
Installation Time, Crew Size, and Hourly Rates to Budget For
Install time for a swap is commonly 6–16 hours with a 2–3 person crew; complex installs (ductwork, rooftop) run 12–24 hours. Average HVAC tech rates: $75-$125 per hour; specialty work or overtime can push labor to $150+/hour.
Example: 2 techs × 10 hours × $90/hr = $1,800 labor estimate.
Common Add‑Ons, Diagnostics, and Extras That Increase the Final Invoice
Frequent extras include duct sealing ($300-$1,200), new thermostats $150-$600, line set replacement $250-$900, and condensate/piping upgrades $200-$700. Unexpected diagnostics or code-required upgrades (electrical panel work, combustion air) can add $400-$2,500.
Typical minimum or service call charges: $75-$150; emergency or weekend service fees: $150-$400 extra.