Lennox 17 SEER Air Conditioner Cost and Typical Installed Prices 2026

Lennox 17 SEER air conditioner cost varies by unit size, existing ductwork, and installation complexity. Buyers typically pay between $3,500 and $10,500 installed; the main cost drivers are tonnage, labor, and required refrigerant/line-set work.

Item Low Average High Notes
Installed System (2–5 ton) $3,500 $6,800 $10,500 Assumptions: 2–4 ton home, standard ductwork, suburban U.S.
Outdoor Condensing Unit Only (per ton) $1,200 $1,650 $2,200 Assumptions: new unit price, excludes coil/evap and installation.
Full Replacement (incl. coil, labor) $4,000 $7,500 $11,500 Assumptions: moderate access, permit, basic thermostat.

Installed Price Ranges for 2‑5 Ton Lennox 17 SEER Systems

Typical installed prices for a 2–5 ton Lennox 17 SEER system range from $3,500 to $10,500 depending on tonnage and job scope.

2 ton (small): $3,500-$5,000 installed; 3 ton (typical): $4,500-$7,500 installed; 4 ton: $5,500-$8,500 installed; 5 ton (large homes): $7,000-$10,500 installed. Assumptions: includes outdoor unit, indoor coil or matched evaporator, basic line-set up to 50 ft.

Breakdown of Major Quote Components for Lennox 17 SEER Installs

Most quotes separate unit materials, labor, equipment, permits, and disposal/delivery costs.

Materials Labor Equipment Permits Delivery/Disposal
$1,200-$5,000 (unit, coil, filter, thermostat) $900-$3,500 (installation crew) $150-$600 (lift, vacuum pump rental) $50-$400 (local) $100-$800 (old unit removal)

How Tonnage, Line‑Set Length, and Duct Condition Affect the Final Quote

Tonnage, line-set run length, and duct repairs are the strongest variables that change price.

Examples with numeric thresholds: replacing with a larger unit above 4 ton typically adds $1,200-$2,000; line-set runs over 50 ft add $200-$800; duct repairs or replacement add $1,000-$5,000 depending on square footage and sealing needs.

Practical Ways to Lower the Lennox 17 SEER Installation Price

Scope control, timing, and accepting standard finishes reduce cost without compromising basic performance.

  • Pick standard coil match rather than custom high‑end coil: saves $300-$900.
  • Schedule in off-peak season (fall or spring) to reduce labor premium by 5%–15%.
  • Do simple prep work (clear attic access, remove debris) to avoid $100-$300 extra labor charges.
  • Obtain 3 written quotes and compare identical scopes to save 7%–15% vs single-quote pricing.

How Regional Prices Compare Across the U.S.

Prices differ by region: expect 10%–25% higher in high-cost coastal metro areas versus Midwest or rural markets.

Region Typical Installed Range Delta vs. National Avg
Northeast / Metro $5,500-$11,500 +15% to +25%
Midwest / Suburban $3,800-$7,800 -5% to +5%
South / Sunbelt $4,000-$9,000 +0% to +15%
Rural Areas $3,500-$7,000 -10% to 0%

Common Add‑Ons, Removal Fees, and Unexpected Site Costs

Be prepared for line-set replacement, refrigerant recovery, and surge protector or disconnect upgrades to change an initial quote.

  • Line-set replacement: $200-$1,000 depending on length and insulation.
  • R-410A refrigerant top-off or recovery: $75-$300; full re-charge if leaks detected: $300-$800.
  • Electrical upgrades (disconnect, subpanel): $300-$1,200.
  • Minimum trip or diagnostic fees for service-only calls: $75-$150.

Three Real‑World Quote Examples With Specs and Pricing

Concrete quotes help map the ranges to realistic projects.

Scenario Specs Labor Hours Per‑Unit Rates Total
Basic Replacement 3 ton Lennox 17 SEER, matched coil, existing ducts good 10–14 hours $1,650 per ton (unit) $4,800-$6,200
Moderate Upgrade 4 ton, new evaporator coil, 60 ft line-set, permit 14–20 hours $1,650 per ton $6,800-$8,900
Complex Job 5 ton, duct repairs, electrical upgrade, long run 20–40 hours $1,650-$2,000 per ton $9,000-$12,500

Assumptions: contractor rates $75-$125 per hour depending on region and crew size.

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