How much does it cost to replace a central air conditioner?

Most homeowners pay roughly $4,500–$9,500 for a complete central AC replacement (condenser, coil, and installation), within a broader range of about $3,500 on the low end to $12,000+ for large or high-efficiency systems. The main drivers are system size, efficiency rating, and whether ductwork needs work.

Is it cheaper to replace just the AC or the whole HVAC system?

Replacing only the AC (condenser + coil) is cheaper than a full HVAC replacement that also swaps the furnace or air handler. But if both are near end of life, replacing them together usually costs less than doing two separate jobs later — and the components stay matched.

What's the most expensive part of an AC replacement?

Roughly half the cost is the equipment (condenser and coil); the rest is labor, permits, refrigerant, and any electrical or duct work. Replacing ductwork is the single biggest add-on when it's needed.

How long does a central AC unit last?

A well-maintained central air conditioner typically lasts 12–17 years. If yours is over about 15 years old and needs a major repair, replacing it is often the better value.

Central air conditioner replacement cost in Chicago

Central air conditioner replacement in Chicago costs about $3,900 to $13,200 (typically $7,700) — local prices run about 10% above the national average.

These figures adjust our national central air conditioner replacement range to Chicago's local cost level — see the method and sources below.

Low

$3,900

Typical

$7,700

High

$13,200

How we localized this

We start from our national central air conditioner replacement range of $3,500–$12,000 and adjust it for Chicago, where costs run about 10% above the national average. Chicago construction costs run modestly above the national average — high union labor rates are the main driver, partly offset by a deep, competitive contractor market that keeps bids in check. Recent cost increases have tracked at or slightly below the national pace. Materials are priced roughly nationally, so treat this as an approximation — your actual price depends on your home, contractor, and project specifics.

Chicago cost sources (2)

Chicago construction cost and market overview 2026 — Turner & Townsend
Construction Cost Index for Chicago — Mortenson

Chicago's strong union labor presence raises wage rates above the national average, though a deep, competitive contractor market keeps bids from running away. Harsh winters are hard on roofs and make furnace reliability critical, and the short building season concentrates demand from spring through fall. Older housing stock means more electrical-panel upgrades and sewer-line work than in newer metros.

Estimate your Chicago central air conditioner replacement

Adjust for your home and system. The estimate starts from our published range and narrows for the choices you make.

Your area

Adjusts the estimate to local cost levels. Pick a metro or leave on national.

Home / system size

Bigger homes need more cooling capacity (measured in tons).

Efficiency (SEER2)

Higher-efficiency units cost more upfront but use less power.

Ductwork

Estimated cost for your options in Chicago

$3,900 – $13,200

Typical: $7,700

Adjusted for Chicago — costs there run about 10% above the national average.

How we got this

Starts from our published central air conditioner replacement range of $3,500–$12,000, adjusted for:

Home / system size: Average (1,500–2,000 sq ft · ~3 ton)×1
Efficiency (SEER2): Standard (14–15 SEER2)×1
Ductwork: Reuse existing ducts×1
Area: Chicago×1.1

These figures are planning estimates compiled from public cost data on the dates shown — not quotes, bids, or guarantees. Real prices vary widely with your home, location, materials, permits, and contractor. Always get itemized written quotes from licensed local pros before budgeting or hiring.

What changes the price

System size (tonnage) — Raises cost
Larger homes need more cooling capacity, which raises both equipment and labor.
SEER2 efficiency rating — Raises cost
Higher-efficiency units cost more upfront; federal minimum SEER2 standards rose in 2023.
Ductwork condition — Varies
Reusing sound ducts keeps cost down; damaged or undersized ducts add to it.
Brand & warranty — Raises cost
Premium brands and longer warranties carry higher prices.
Rebates & tax credits — Lowers cost
Utility rebates and federal efficiency tax credits can lower your net cost.

Get real quotes for your Chicago central air conditioner replacement

Our ranges are for planning. The only way to know your real price is itemized quotes from licensed local pros — always get at least three before you hire.

Tip: search for licensed, insured Chicago central air conditioner replacement contractors in your area, check reviews and references, and compare written itemized bids — not just bottom-line numbers.

Central air conditioner replacement cost — FAQ

How much does it cost to replace a central air conditioner?: Most homeowners pay roughly $4,500–$9,500 for a complete central AC replacement (condenser, coil, and installation), within a broader range of about $3,500 on the low end to $12,000+ for large or high-efficiency systems. The main drivers are system size, efficiency rating, and whether ductwork needs work.
Is it cheaper to replace just the AC or the whole HVAC system?: Replacing only the AC (condenser + coil) is cheaper than a full HVAC replacement that also swaps the furnace or air handler. But if both are near end of life, replacing them together usually costs less than doing two separate jobs later — and the components stay matched.
What's the most expensive part of an AC replacement?: Roughly half the cost is the equipment (condenser and coil); the rest is labor, permits, refrigerant, and any electrical or duct work. Replacing ductwork is the single biggest add-on when it's needed.
How long does a central AC unit last?: A well-maintained central air conditioner typically lasts 12–17 years. If yours is over about 15 years old and needs a major repair, replacing it is often the better value.

Cost data compiled June 13, 2026.

Sources (4)

Air Conditioner Replacement Cost in 2026 — Sears Home Services
Air Conditioner Replacement Cost in 2026: 6 Ways to Save — NerdWallet
AC Replacement Cost 2026 — HVAC Project Cost
New HVAC System Cost 2026 Pricing Guide — Bryant

Ranges synthesize several public 2026 cost guides into a low–typical–high band rather than reproducing any single source's table. Metro-level breakdowns are coming as we verify local data.

Compare other locations

See all Chicago HVAC costs on the Chicago HVAC page.

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