How much does it cost to replace an AC system in Chicago, IL?

Full AC system replacement in Chicago, IL typically runs $6,500–$12,000 installed for a standard-efficiency system, including the outdoor unit, indoor coil, and labor. High-efficiency systems run $10,000–$16,000 but can cut cooling bills 20–40%. Quotes vary mostly on sizing and ductwork condition — get the load calculation, not just a tonnage guess.

What you can check yourself

• Ask each bidder for their load calculation (Manual J) — a quote without one is a guess.
• Compare like-for-like efficiency (SEER2 rating) across quotes.
• Ask about utility rebates and federal tax credits in the quote — good installers itemize them.

Typical cost

Typical installed range in Chicago, IL: $6,500–$12,000 standard; $10,000–$16,000 high-efficiency. Ductwork replacement, if needed, adds $2,000–$5,000.

When to call a pro

This is a get-three-quotes job. The cheapest bid without a load calculation usually becomes the most expensive system you own.

HVAC pros in Chicago, IL

• 1
  Reeder Heating And Cooling Inc. ★ Recommended

  Chicago, IL · 17737677100

We're still verifying other pros nearby before naming them.

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Data by Servik — verified local pros from official license records and public sources. Cost figures are typical ranges, not quotes; a pro's written estimate is the real number.