AC replacement in Arizona typically costs $7,500 to $12,500 (editorial planning estimate, not a quote). A typical 3 ton replacement runs $7,500 to $12,500 installed. High efficiency and variable speed systems, larger tonnage, and rooftop package units with crane service run higher. These ranges match the New AC Unit Cost Calculator. Request local quotes by sharing your ZIP and the issue.
Price range
| Service | Low | Typical range | High |
|---|---|---|---|
| AC replacement | $5,000 | $7,500 to $12,500 | $20,900+ |
Editorial planning estimate; not a local quote or a measured city average. City pages use the same statewide planning ranges; they are not independent city research. Prices are estimates only. Actual quotes vary by diagnosis, parts, labor, access, equipment, urgency, code requirements, permits, and contractor. How these estimates are built.
SEER2 and EER2 minimums in the Southwest region
Arizona is in the federal Southwest region. For split-system central air conditioners installed since January 1, 2023, the regional minimums depend on capacity and on both SEER2 and EER2:
| Split AC capacity | Minimum SEER2 | Minimum EER2 |
|---|---|---|
| Below 45,000 Btu/h | 14.3 | 11.7 if SEER2 is below 15.2; 9.8 if SEER2 is 15.2 or higher |
| 45,000 Btu/h and above | 13.8 | 11.2 if SEER2 is below 15.2; 9.8 if SEER2 is 15.2 or higher |
Ratings apply to the matched outdoor and indoor combination, not the outdoor unit alone. Heat pumps and packaged (rooftop) units have separate federal requirements, so this table does not cover them. Before approving a replacement, Arizona homeowners can ask for the exact model numbers and look up the matched system on its AHRI certificate.
Higher-efficiency equipment usually costs more to buy. Whether it lowers your bills, and by how much, depends on your home, ducts, usage, and utility rates, which is why we show Good, Better, and Best estimates rather than one number.
Source: 2023 Energy Conservation Standards for Residential Central Air Conditioners and Heat Pumps FAQ (U.S. Department of Energy, October 5, 2022).
AC replacement cost by system size
Size is the single biggest driver of installed price. These are the same numbers the New AC Unit Cost Calculator returns, so the tool and this page always agree.
| System size | Typical home size | Good | Better | Best |
|---|---|---|---|---|
| 2 ton | 900 to 1,200 sq ft | $5,000 to $8,400 | $6,000 to $10,000 | $7,500 to $12,500 |
| 2.5 ton | 1,200 to 1,500 sq ft | $6,300 to $10,500 | $7,500 to $12,500 | $9,400 to $15,700 |
| 3 ton | 1,500 to 1,800 sq ft | $7,500 to $12,500 | $9,000 to $15,000 | $11,300 to $18,800 |
| 3.5 ton | 1,800 to 2,100 sq ft | $8,800 to $14,600 | $10,500 to $17,600 | $13,100 to $21,900 |
| 4 ton | 2,100 to 2,400 sq ft | $10,000 to $16,700 | $12,000 to $20,100 | $15,000 to $25,100 |
| 5 ton | 2,400 to 3,000 sq ft | $12,500 to $20,900 | $15,000 to $25,100 | $18,800 to $31,400 |
Editorial planning estimates, not quotes. Ranges assume complete installed prices for a standard single system replacement in Arizona, including equipment, labor, permit allowance, removal and disposal of the old unit, standard electrical and condensate connections, a standard thermostat, and startup. Rooftop package units add a crane allowance. Two system homes and commercial rooftop units price separately.
Prices are estimates only. Actual quotes vary by diagnosis, parts, labor, access, equipment, urgency, code requirements, permits, and contractor.
Rooftop package units may need a crane
Some Arizona homes use a rooftop package unit instead of a split system with a ground level condenser. Replacing a rooftop unit can require a crane and a staging spot, and that lift is often billed as its own line item on top of the equipment price.
Ask whether the crane, curb adapter, and any roof curb or duct transition work are included in the quoted price, or listed as extras added later.
What affects the price
- System size (tonnage) and efficiency (SEER2)
- Single-stage vs variable-speed equipment
- Ductwork condition and modifications
- Permit and code requirements
- Brand and warranty coverage
Common reasons homeowners need this
- Repeated expensive repairs
- System older than 12 to 15 years
- Rising energy bills
- R-22 (old refrigerant) systems
- Failed compressor
Smart questions before approving work
Smart questions to ask before approving work
- Ask for a written estimate
- Ask whether a diagnostic fee applies
- Ask whether after-hours fees apply
- Ask about the parts and labor warranty
- Ask about permit requirements where relevant
- Verify the contractor's Arizona license
- Compare more than one quote for expensive repairs
Frequently asked questions
How much does ac replacement cost in Arizona?+
AC replacement in Arizona typically costs $7,500 to $12,500 (low $5,000, high $20,900+). A typical 3 ton replacement runs $7,500 to $12,500 installed. High efficiency and variable speed systems, larger tonnage, and rooftop package units with crane service run higher. These ranges match the New AC Unit Cost Calculator.
Are these prices guaranteed?+
No. These are estimates only. Your actual price depends on diagnosis, parts, labor, access, urgency, permits, and the contractor.
By city
Page Summary
- Topic
- AC replacement
- Location
- Arizona (statewide)
- Best for
- Homeowners researching fair pricing
- Primary action
- Submit a quote request
- Related services
- See related cost guides
- Content updated
- November 8, 2026
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Content updated November 8, 2026 by the PlumbAirAZ editorial team. Editorial policyPricing methodology
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