AC Replacement in Sacramento

This page is about swapping out a system you already have. If your home has never had central air, or you're cooling an addition or ADU, see AC installation. If you just need yours running again, see AC repair.

Repair or replace: the math

A quick rule of thumb: multiply the system's age in years by the repair price. If the result is more than the price of a new system, replacement is usually the better value. If it's well under, repair it.

The rule doesn't cover everything, so look at these factors too:

Factor	Leans repair	Leans replace
Age	Under about 10 years	15 years or older
What failed	Capacitor, contactor, fan motor, drain	Compressor, or a leaking indoor or outdoor coil
Refrigerant	R-410A with a small, fixable leak	R-22 (only costly reclaimed supply remains), or repeat leaks
Repair history	First problem in years	Second or third major repair in a few summers
Comfort	House cools evenly when it runs	Can't keep up on 100°F days, uneven rooms, high humidity indoors
Furnace	Furnace is fairly new	Furnace is also old, so both can be replaced together, or with one heat pump

We'll give you both prices when a major repair is on the table, so you can decide with real numbers.

The refrigerant change: R-410A to A2L

Since January 1, 2025, manufacturers can no longer produce new residential air conditioners and heat pumps that use refrigerants with a high global warming potential, which includes R-410A. New equipment uses A2L refrigerants, mainly R-454B and R-32.

• What changed in 2026. EPA finalized a rule in May 2026 that removed the January 1, 2026 installation deadline for R-410A systems made or imported before 2025. Leftover R-410A stock can still be installed until it runs out. Most new equipment you'll be quoted is A2L.
• Your old system is still serviceable. Existing R-410A systems can be repaired and recharged. The phase-down may raise refrigerant prices over time.
• A2L means "mildly flammable." The risk is low, but these systems follow updated safety standards, and many include a refrigerant leak sensor in the indoor unit. Technicians need A2L-rated tools and training.
• No mixing. A new A2L outdoor unit can't be paired with your old R-410A indoor coil. Replacing the condenser means replacing the coil, and we check whether the copper line set can be reused.

SEER2 and EER2 minimums in California

Since January 1, 2023, efficiency is rated with the SEER2 test, and California falls in the federal Southwest region, which has the strictest air conditioner rules. In the Southwest, compliance is based on the date of installation.

Equipment (Southwest region)	Minimum seasonal rating	Minimum peak rating
Split AC under 45,000 Btu/h (under about 3.75 tons)	14.3 SEER2	11.7 EER2
Split AC 45,000 Btu/h and up	13.8 SEER2	11.2 EER2
Split heat pump (national)	14.3 SEER2	7.5 HSPF2 (heating)

In Sacramento, pay attention to EER2. It measures efficiency at a hot outdoor temperature, which is closer to a July afternoon here than the seasonal average. A higher EER2 helps most on the days your bill is highest. Units rated 15.2 SEER2 or higher have a lower EER2 floor of 9.8. Utility rebates usually require ratings above these minimums.

Matching the coil, furnace and ducts

A central AC is two halves: the outdoor condenser and the indoor evaporator coil, which sits on your furnace or air handler. They're rated as a matched pair, and the furnace blower moves the air for both. A good replacement looks at all of it:

• Matched coil. The new coil must be rated with the new condenser. A mismatched pair won't deliver its rated efficiency and can void the equipment warranty.
• Furnace blower. An older furnace with a single-speed blower can limit a two-stage or variable-speed AC. If the furnace is 15 to 20 years old, pricing both together, or a heat pump instead, often makes sense. See furnace installation & replacement.
• Sizing. Bigger isn't better. We confirm size with a load calculation rather than copying the old unit, since insulation, windows and the house may have changed.
• Ducts. Leaky or undersized ducts waste the new system's efficiency. They also have to pass the Title 24 test below.

Title 24 permit and HERS testing

California's Energy Code (Title 24) applies to AC changeouts. Replacing a system requires a building permit from your city or county, and in most of the Sacramento region (climate zone 12) it triggers third-party HERS verification.

• Duct leakage test. When a replacement is connected to existing ducts in an attic or crawlspace, the ducts are pressure-tested. If they leak too much, they must be sealed before the job can pass. See air duct sealing.
• Refrigerant charge and airflow verification. Depending on the system, the installer and an independent HERS rater verify charge and airflow.
• Final inspection. The building inspector signs off, and the compliance forms are registered with a HERS provider.

Skipping the permit can cause trouble when you sell, and some rebates require proof of a permit. Requirements vary by jurisdiction, so the exact tests depend on your house and system.

Rebates and incentives at the time of writing (2026)

• SMUD. SMUD increased its heat pump rebates in February 2026, citing expired federal and state incentives. The largest rebates go to gas-to-electric conversions, such as replacing an AC and gas furnace with a heat pump, and more efficient variable-speed systems earn more than two-stage. Work must be done by a contractor in the SMUD Contractor Network. We've been a participating contractor since 2020 and can submit the paperwork for qualifying cooling and heating projects at SMUD addresses. Funding is limited.
• PG&E territory. Parts of Placer, El Dorado and Yolo counties are served by PG&E. The statewide TECH Clean California heat pump incentives were reported fully reserved for single-family homes as of mid-2026. Check techcleanca.com and PG&E for current offers.
• Roseville Electric. Roseville runs its own utility and rebate list. Check the city's site for current HVAC rebates.
• Federal tax credit. The 25C energy efficient home improvement credit ended for equipment placed in service after December 31, 2025.

A straight AC-for-AC swap generally qualifies for less than a heat pump conversion. We'll tell you which programs your project fits before you choose.

The heat pump option

In Sacramento's climate, a heat pump is often the most practical replacement for an AC and gas furnace. It looks like an AC outside but runs in reverse in winter to heat the house.

	New AC + existing or new gas furnace	Heat pump
Cooling	Same	Same
Heating	Gas	Electric, efficient in Sacramento's mild winters
Rebates (2026)	Limited	SMUD's largest HVAC rebates
Electrical	Usually no change	May need panel capacity, especially with backup heat
Best fit	Furnace is new and you want to keep gas	Furnace is also old, or you're going all-electric

Learn more on our heat pump installation page.

What does AC replacement cost in Sacramento?

What moves the price:

• System size and efficiency. Tonnage, SEER2/EER2 and single-stage vs variable-speed.
• Coil and furnace. Condenser and coil only, or the furnace too.
• Ducts. Sealing or repairs needed to pass the HERS duct test.
• Line set and electrical. Replacing copper lines, a new disconnect or circuit work.
• Access. Attic furnaces and tight crawlspaces add labor.
• Permit and HERS fees, and any rebates that reduce your net cost.

How an AC replacement works

1. Free in-home estimate. We look at the equipment, ducts, electrical and comfort problems, then run a load calculation.
2. Options in writing. Repair vs replace, AC vs heat pump, efficiency levels and rebates, each with a clear price.
3. Permit. Pulled with your city or county before work starts.
4. Install. Old equipment and refrigerant are removed properly, the new system is set, brazed, pressure-tested and evacuated. Most changeouts take one to two days.
5. Testing and HERS. Charge and airflow are verified, ducts are tested, and the HERS rater and inspector sign off.
6. Paperwork. The equipment is registered with the manufacturer, and you get the documents each rebate program asks for.

Where we replace AC systems

We replace air conditioners across the region, including Folsom, Roseville, Rancho Cordova and Fair Oaks.

AC replacement FAQ