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AC replacement in Los Angeles
Replacing a central AC on ducts that can be reused is published at $8,000–$16,000 for 3 tons in Los Angeles in 2026, and $6,500–$25,000 from 2 to 5 tons. The permit and a duct leakage test come with every change-out.
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At a glance
An outdated figure still circulates
Some ranking pages say California needs an HVAC license only above $500. The threshold rose to $1,000 on 1 January 2025, and it never applies to permitted work such as an AC replacement (CSLB).
What an AC replacement includes
A replacement swaps the outdoor condensing unit and the indoor evaporator coil, usually together, on the ducts and wiring already in the house. The quote should also cover a new or flushed refrigerant line set, a pad, the disconnect, removal of the old unit with refrigerant recovery, the permit and start-up.
If the furnace is near the end of its life, a full-system replacement swaps it at the same visit. That is the bigger number Affordable Heating and Air prints: $9,000–$22,000.
AC replacement cost by size
| Size | Published range | Sources |
|---|---|---|
| 2 ton | $6,500–$12,000 | Reliable H&A, Cold Cloud |
| 2.5 ton | $7,000–$13,500 | Reliable H&A, Cold Cloud |
| 3 ton | $8,000–$16,000 | Reliable H&A, Cold Cloud |
| 3.5 ton | $11,000–$17,500 | Reliable H&A; least settled |
| 4 ton | $9,500–$19,000 | Reliable H&A, Cold Cloud |
| 5 ton | $11,000–$25,000 | Reliable H&A, Cold Cloud |
Ranges assume reusable ducts. Duct repair to pass the leakage test is published at $800–$4,500 on top. All adders are on the cost guide.
What moves a replacement quote
| Line on the quote | Published range | When it applies |
|---|---|---|
| Duct repair and sealing | $800–$4,500 | The ducts fail the Title 24 leakage test |
| New line set or long run | $300–$1,500 | The old line set cannot be reused or the units move |
| Panel, 100 A to 200 A | $2,000–$7,500 | Older service with no capacity left |
| Crane lift | $800–$2,000 | Roof-mounted or hard-to-reach equipment |
| Permit and Title 24 paperwork | $250–$800 | Every replacement |
AC only, or the full system?
AC only (condenser and coil)
Published at $8,000–$16,000 for 3 tons. Keeps the furnace. Right when the furnace is younger and its blower suits the new coil.
Full system or heat pump
Affordable Heating and Air prints a full system at $9,000–$22,000. A heat pump replaces both and is the system LA rebates pay for.
Signs the AC is due for replacement rather than repair
- The system runs on R-410A and needs a large refrigerant top-up or a compressor. New equipment uses lower-GWP A2L refrigerants such as R-454B or R-32. An EPA rule effective 27 July 2026 lets installers keep fitting R-410A split systems built before 2025 until stock runs out. California sets its own HFC rules through CARB, so ask which refrigerant the quote uses and whether it can be installed here.
- The repair quote is a large share of a replacement quote on a unit that is already old.
- Rooms never cool on Valley heat days even when the system runs nonstop, which can mean it was undersized or the ducts leak.
- The furnace is due too, which makes a heat pump or full-system quote worth comparing.
For the full decision, see AC repair vs replacement and when to replace an air conditioner.
How an LA AC replacement is done
- Sizing. The contractor checks the size rather than copying the old unit's tonnage. HyreHVAC explains the Manual J load calculation.
- Permit. Pulled from LADBS in the City of Los Angeles, or your own city's office. See the permit guide.
- Swap. Old refrigerant recovered, old unit and coil out, new matched pair in, line set flushed or replaced.
- Tests. Under Title 24 Part 6, replacing the condensing unit, air handler or coil is an alteration that triggers duct sealing. Adding more than 25 feet of new duct means the whole system must test at 10 percent leakage or less. Refrigerant charge checks apply to heat pumps everywhere and to ACs in zones 2 and 8–15.
- Final. Third-party verification and the inspector's sign-off close the permit.
What to ask before you sign
- Are the outdoor and indoor model numbers a matched, rated pair, and what SEER2 and EER2 do they carry? California is in DOE's Southwest region. A split AC installed since 1 January 2023 needs 14.3 SEER2 below 45,000 Btu/h (13.8 above), plus an EER2 minimum of 11.7 (11.2 for larger units; 9.8 at 15.2 SEER2 or more). Split heat pumps need 14.3 SEER2 and 7.5 HSPF2.
- Which refrigerant does the new system use?
- If the ducts fail the leakage test, what is the cost to seal them?
- Is the old furnace compatible with the new coil, or does it need replacing?
- Will you pull the permit in your name, and from which office?
- What is the down payment? CSLB cautions against more than 10 percent.
Line the answers up in the quote comparison tool.
Published prices for the job: AC replacement cost in Los Angeles. What the refrigerant change means: R-454B and A2L refrigerants.
Sources
- Reliable Heating and Air (Woodland Hills), AC installation cost in LA and Ventura County (retrieved 2026-09-29)
- Cold Cloud (Glendale), central air cost in Los Angeles (retrieved 2026-09-29)
- Affordable Heating and Air (Chatsworth), AC replacement cost in Los Angeles (retrieved 2026-09-29)
- Energy Code Ace (CEC-supported), Single-Family Compliance Manual ch. 9, § 150.2(b)1E–F, 2022 code text; confirm against the 2025 code in force since 1 January 2026 (retrieved 2026-09-29) — verify before relying on it
- NAHB summary of the EPA final rule under the AIM Act (May 2026); California rules per CARB (verify) (retrieved 2026-09-29) — verify before relying on it
- 10 CFR 430.32(c), Electronic Code of Federal Regulations (retrieved 2026-09-29)
- CSLB press release #24-21, "Handyperson Exemption to Increase to $1,000 in 2025" (AB 2622) (retrieved 2026-09-29)
- LADBS, "Mechanical HVAC Permits" and Express Permits bulletin P/GI 2020-003 (LADBS refused our automated read) (retrieved 2026-09-29) — verify before relying on it
- CSLB press release #24-21 (retrieved 2026-09-29)
Questions
How much does AC replacement cost in Los Angeles?
A 3-ton central AC replacement on existing ducts is published at $8,000–$16,000 by LA HVAC companies in 2026. Affordable Heating and Air prints a full-system replacement, furnace included, at $9,000–$22,000.
Can I replace just the outdoor unit?
Sometimes, but the outdoor unit and indoor coil are rated as a matched pair. A new condenser on an old coil may not reach its rated SEER2, may use a different refrigerant, and still triggers the Title 24 duct test. Ask the contractor to quote both options in writing.
Does an AC replacement need a permit in Los Angeles?
Yes. Replacing the condenser, coil or air handler is an alteration under the energy code, so it needs a permit and the duct and refrigerant tests that come with it.
Is a license needed for an AC replacement in California?
Yes. Since 1 January 2025 the CSLB limit for unlicensed work is $1,000 in labor and materials, and only for jobs that need no permit. An AC replacement needs a permit, so it needs a licensed C-20 contractor at any price. Some pages still quote the old $500 figure.
Can I keep my furnace when I replace the AC?
Often, if the furnace is in good condition and its blower and cabinet suit the new coil. Ask the contractor to confirm compatibility in writing; an old blower can limit the airflow the new system is rated for.
Does the City of Los Angeles offer an express permit for an AC swap?
LADBS sells an online express permit for a same-location, similar-capacity, same-fuel change-out that reuses the ducts. We could not read the current LADBS page automatically, so confirm the conditions with LADBS.
What refrigerant will a new AC use?
New equipment uses lower-GWP A2L refrigerants such as R-454B or R-32. Installers may still fit R-410A split systems built before 2025 until stock runs out. Ask which one your quote uses.
Should I replace the AC with a heat pump instead?
It is worth pricing. A heat pump does the AC's job and also heats, so it can retire an old gas furnace at the same visit. LADWP and the Burbank and Pasadena utilities rebate heat pumps, not straight ACs.
Next step
Free quote request
Get a quote to check against these numbers
- Tell us about the job. Service, ZIP, property and timing. The form says right away if your ZIP is outside the area.
- We check the license first. Requests go only to contractors whose CSLB C-20 license we have matched on the state register. If none covers your ZIP yet, we email you and say so.
- Compare what comes back. Line the written quote up against the published ranges and the quote checklist.
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