$3,850 – $9,350We estimate AC replacement in Illinois at $3,850 to $9,350 for a central AC outdoor unit and matching coil on existing ductwork. The national estimate is $3,800 to $9,050. Illinois HVAC technician pay is 27% above the national median, ranking 3 of 51.
Part of the job
Low
High
Parts and materials (our assumption)
$3,500
$8,000
Labor hours (our assumption)
4
8
Billed labor rate per hour
$93
$167
Estimated total
$3,850
$9,350
Our estimate, not a quote. Billed rate is the Illinois median wage from BLS (2025, $37.21 an hour) times 2.5 to 4.5 to cover payroll costs, overhead, travel and profit. How we estimate
What our assumptions are based on
Item
Sourced figure
Basis
Source
Parts
$2,555 – $3,550
Budget Heating listed prices for 3-ton split systems with a condenser and air handler, not a condenser and coil. Two models listed: $2,555 and $3,550 (the second, a wall-mount apartment type, also on sale at $2,630).
General information, not professional advice. Conditions, codes and prices vary. Turn off power, gas or water before any work, and hire a licensed professional when in doubt. Cost figures are our estimates, not quotes.