AC Unit Replacement Cost Calculator
Get a realistic installation estimate for your ZIP Code.
Average AC Unit Replacement Cost
AC prices have jumped ~25% since the 2023 'SEER2' mandate required larger coils and updated refrigerant standards. A standard replacement now lands between $4,200 and $9,500, but federal tax credits (IRA) for Heat Pumps can offset up to $2,000 of this cost.
This range reflects typical installations and is meant for planning and budgeting reference only.
- The SEER2 Effect (Physical Size): New efficiency laws mean updated units are physically larger. If your old unit is in a tight closet or attic, you may pay extra for 'plenum modification' or carpentry just to fit the new box.
- The 'Line Set' Flush: If replacing an old R-22 (Freon) unit, you cannot reuse the old copper pipes without a chemical flush or total replacement to match the new refrigerant pressures.
- Single vs. Two-Stage: A basic single-stage AC runs at 100% blast or off. Paying $1,500 more for a Two-Stage or Variable Speed unit offers far better humidity control and lower monthly electric bills.
Use the calculator below to refine your range based on home details.
Repair vs. Replace: When Replacement Usually Makes More Sense
Replace when: Unit uses R-22 (Freon) refrigerant, Compressor grounding or 'hard start' failure, or Repair cost > $1,000 on a 12+ year old system. Repair when: Bad Capacitor ($150-$300 fix), Clogged drain line causing shutoff, or Fan motor failure on a unit < 8 years old.
Why Installation Costs Vary
The SEER2 Effect (Physical Size), The 'Line Set' Flush, and Single vs. Two-Stage can affect the final quote.