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How much does central air installation cost with existing ductwork?

Central air installation with existing ductwork is priced after an in‑home assessment because equipment size, efficiency rating, and any required updates drive the total. With ducts already in place, most costs come from the new indoor/outdoor units and labor, while minor duct sealing or adapter work is a smaller add‑on. We routinely install systems across the Las Vegas Valley, including projects in Blue Diamond homes. As a Lennox Premier Dealer, we provide a free estimate and system sizing to match your home and budget, and select systems may qualify for up to $2500 off.

Common cost drivers to review during the estimate:

  • System capacity (tonnage) and SEER2 rating
  • Reuse vs. replacement of the refrigerant lineset and pad
  • Electrical upgrades and thermostat compatibility
  • Code updates or IAQ/smart‑home add‑ons

Schedule a free in‑home estimate to confirm pricing once a technician inspects your equipment location and duct condition.

Updated: 2026-07-21

Need help in Blue Diamond, NV? Call (702) 710-9106 or book online.

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