Updated October 2026. Every model number, efficiency rating and warranty term below was checked against the manufacturer’s own spec sheet or warranty document in October 2026. Where two official sources disagree, we say so.
Most “best AC brand” lists are written by lead-generation sites that never open a condenser. We install and repair these systems in Roseville, Sacramento and the surrounding towns, so this list is built from two things: what the manufacturers actually publish, and what we see when the equipment breaks in a 105°F August.
Two warnings before the list. First, several big comparison sites still quote model names and ratings that were retired with the 2025 refrigerant change, and some mix old SEER numbers with new SEER2 numbers in the same table. We show both and label them. Second, installation quality changes the outcome more than the badge does. A well-sized mid-range system will outlast a premium unit that was installed badly.
The top 10 air conditioner brands for 2026
- Trane: strongest standard compressor warranty of the majors (12 years on its top tiers) and up to 23.6 SEER2.
- Carrier: the safest all-around pick, with deep parts and dealer support. Current flagship tops out at 21 SEER2.
- Lennox: the efficiency leader at up to 26.0 SEER2, with a parts-availability caveat.
- American Standard: the same engineering as Trane under a different badge, often quoted for less.
- Daikin: 12-year parts and 12-year unit replacement coverage on its top models when registered.
- Bryant: Carrier engineering, and California owners get the 10-year parts term without registering.
- Rheem: the flagship carries 10-year parts and compressor coverage whether you register or not.
- Ruud: Rheem’s sister brand with the same warranty and similar equipment.
- Goodman: the honest budget answer, now built on R-32 by Daikin’s US arm.
- Amana: Goodman’s upscale sibling, with unit replacement coverage tied to annual maintenance.
For ductless systems, our pick is Mitsubishi Electric, covered in its own section below.
Best AC brand by what you need
- Highest efficiency: Lennox SL25KCV, up to 26.0 SEER2.
- Best standard warranty: Trane and American Standard (12-year compressor on top tiers), Daikin (12-year parts plus 12-year unit replacement on top models).
- Least paperwork in California: Rheem and Ruud flagships (same terms registered or not), Bryant, Daikin and Lennox (warranty text exempts California from registration).
- Best value: Goodman, then Amana.
- Best ductless: Mitsubishi Electric.
Comparison table: flagship models, SEER and SEER2, warranty
| Brand | Flagship central AC | Max SEER2 (since 2023) | Old SEER | Warranty when registered (parts / compressor) | Refrigerant | Price tier |
|---|---|---|---|---|---|---|
| Trane | Premier 20 TruComfort | 23.6 | Not published | 10 / 12 years (top tiers) | R-454B | Premium |
| Carrier | Infinity 21 (26VNA1) | 21 | Not published | 10 / 10 years, or 5 parts + 3 labor | R-454B | Premium |
| Lennox | SL25KCV | 26.0 | Not published | Up to 12 years parts (Signature) | R-454B | Premium |
| American Standard | Platinum 20 | 23.6 | Not published | 10 / 12 years (top tiers) | R-454B | Premium |
| Daikin | DC9VS | 19 | Not published | 12 years parts, 12-year unit replacement | R-32 | Mid to premium |
| Bryant | Evolution 191VAN | 21 | Not published | 10 years parts | R-454B | Mid to premium |
| Rheem | Prestige RA19AY | 20.0 | Not published | 10 / 10 years, registered or not | R-454B | Mid |
| Ruud | Ultra UA19AY | 20 | Not published | 10 / 10 years, registered or not | R-454B | Mid |
| Goodman | GXV9S | 19.0 | Not published | 10 years parts | R-32 | Value |
| Amana | AXV9S | 19 | Not published | 10 years parts | R-32 | Value to mid |
| Mitsubishi (ductless) | FS series, 6,000 Btu | 32.2 | 33.1 | 10 / 10 years, 12 / 12 via Diamond Contractor | R-410A (FS), R-454B (FX) | Premium |
| York | Affinity YXT | 18 | 19 | 10 / 10 years | R-410A | Mid |
Notes: Trane’s 2026 brochure and American Standard’s listing pages give 23.6 SEER2 for these flagships, while some product pages say 24. We use the lower figure. Lennox’s spec sheet says 26.0 SEER2 and the same product page also shows 25.10. Ratings apply to a matched system, so the number on your quote depends on the indoor coil it is paired with. Most standard warranties exclude labor. Carrier and Lennox Signature are the exceptions, with a labor option when you register.
SEER vs SEER2: why the numbers don’t match
Since January 1, 2023, air conditioners are rated with SEER2 instead of SEER. The new test uses higher external static pressure, closer to what real ductwork does to a blower, so the same machine scores lower on SEER2 than it did on SEER. The Department of Energy describes the two as similar but “not directly comparable”. No official body publishes a single conversion factor, so be wary of any site that converts one into the other with a fixed percentage.
Only a few current models still list both numbers side by side, and they show how the gap works:
- Mitsubishi FS, 6,000 Btu (ductless): 33.1 SEER, 32.2 SEER2. A small gap, because ductless units are not hurt much by the new duct pressure test.
- York Affinity YXT (ducted): 19 SEER, 18 SEER2.
- Lennox: the famous “28 SEER” belongs to the older SL28XCV, an R-410A model rated on the old scale. The current flagship, the SL25KCV, is rated 26.0 SEER2.
The practical rule: compare SEER2 to SEER2. If a quote or a website shows a plain “SEER” number for a 2026 system, ask which scale it is.
Detailed reviews of the top 10
1. Trane
Best for: homeowners who plan to stay put and want the longest standard compressor coverage.
Trane retired the XR, XL and XV names. The current lineup is Choice, Priority and Premier, all on R-454B. The flagship Premier 20 TruComfort is rated up to 23.6 SEER2 in Trane’s 2026 brochure (24 on its product page) and 14 EER2. Trane’s registered warranty gives 10 years on parts and 12 years on the compressor for its top variable-speed and two-stage lines, and 10 and 10 on the rest. Register within 60 days. If you don’t, coverage drops to 5 years, and Trane’s warranty does not list a California exception.
- Why we like it: durable cabinets and coils, a 12-year compressor term, and a wide dealer network.
- Watch out for: premium pricing, and the 60-day registration window is easy to miss.
More detail in our Trane air conditioner review and on our Trane service page.
2. Carrier
Best for: the low-regret choice, with parts and trained technicians everywhere.
Carrier’s tiers are Infinity, Performance and Comfort. The current R-454B flagship is the Infinity 21 (26VNA1), rated up to 21 SEER2 and 12 EER2. Register within 90 days and Carrier lets you choose 10 years on parts and the compressor, or 5 years on parts plus 3 years of labor. Unregistered coverage is 5 years.
- Why we like it: parts are easy to get through local supply houses, which matters when a board fails in July.
- Watch out for: the flagship is now less efficient than Trane’s or Lennox’s, and premium Infinity pricing is high.
See our Carrier air conditioner review and Carrier service page.
3. Lennox
Best for: maximum efficiency in a house that runs the AC from May to October.
Lennox sells three tiers: Signature, Elite and Merit. The SL25KCV leads the residential market at up to 26.0 SEER2 per its spec sheet. Warranty depends on tier. Registered Signature models get 12 years on parts, or 10 years parts plus 3 years labor. Registered Elite and Merit models get 10 years on parts and the compressor. Lennox’s warranty lists California among the places where registration is not required.
- Why we like it: the highest SEER2 you can buy, and quiet variable-capacity operation.
- Watch out for: Lennox distributes repair parts through its own dealer network, so find out who services Lennox near you before you buy.
See our Lennox air conditioner review and Lennox service page.
4. American Standard
Best for: Trane quality at a different price.
American Standard is owned by Trane Technologies and shares the same warranty document. Tiers are Silver, Gold and Platinum. The Platinum 20 is rated up to 23.6 SEER2, with 24 listed on some pages. Warranty terms match Trane: 10 years parts and 12 years compressor on the top tiers when registered within 60 days.
- Why we like it: getting a Trane and an American Standard quote on the same house is one of the easiest ways to save money on identical engineering.
- Watch out for: fewer dealers than Trane in some areas.
See our American Standard review.
5. Daikin
Best for: the strongest overall warranty package.
Daikin’s current central ACs run on R-32. The flagship DC9VS is rated up to 19 SEER2. When registered within 60 days, Daikin gives 12 years on parts, plus a 12-year unit replacement warranty on the DC9VS, DC6VS and DC7TC, and 6 years on its entry models. Daikin’s spec sheets list California as exempt from the registration requirement.
- Why we like it: unit replacement coverage swaps the whole outdoor unit for a covered failure within the term, instead of just the failed part.
- Watch out for: lower peak SEER2 than the top three, and labor is not part of the standard warranty.
See our Daikin air conditioner review and Daikin service page.
6. Bryant
Best for: Carrier engineering without the Carrier price.
Bryant is a Carrier Global brand. Tiers are Evolution, Preferred and Legacy. The Evolution 191VAN is rated up to 21 SEER2 and 12 EER2, the same figures as Carrier’s flagship. Warranty is 10 years on parts when registered within 90 days, 5 if not. Bryant’s warranty states that homeowners in California get the 10-year parts term automatically. Select Evolution models add a 10-year unit replacement if the compressor fails.
See our Bryant air conditioner review and Bryant service page.
7. Rheem
Best for: mid-range buyers who don’t want to deal with registration.
Tiers are Prestige, Classic Plus, Classic and Select. The Prestige RA19AY is rated 20.0 SEER2 and 13 EER2 on R-454B. Its warranty is 10 years on parts and the compressor whether or not you register. Mid tiers need registration within 90 days to get 10 years instead of 5. Rheem also offers a conditional 10-year replacement on the flagship, which requires a matched indoor unit, an EcoNet thermostat and pre-approval.
See our Rheem air conditioner review and Rheem service page.
8. Ruud
Best for: the Rheem package through a different dealer network.
Ruud is Rheem’s sister brand and shares the same warranty terms. Tiers are Ultra, Achiever Plus, Achiever and Choice. The Ultra UA19AY is rated 20 SEER2 and 13 EER2. If one dealer quotes Rheem and another quotes Ruud, compare them as the same class of equipment.
See our Ruud air conditioner review.
9. Goodman
Best for: budget replacements, rentals and homes you plan to sell within a few years.
Goodman is part of Daikin Comfort Technologies and now builds its ACs on R-32. The GXV9S is rated 19.0 SEER2. Registered parts warranty is 10 years, 5 if not registered within 60 days. Goodman’s warranty chart lists California as exempt from registration, and unit replacement coverage applies to select models, so check the chart for the exact model on your quote.
- Why we like it: cheap to buy, cheap to fix, and parts are stocked in every supply house.
- Watch out for: entry models are single-stage and less refined than premium brands.
See our Goodman air conditioner review and Goodman service page.
10. Amana
Best for: Goodman pricing with a few upgrades.
Amana is Goodman’s sibling. The AXV9S is rated 19 SEER2 on R-32. Registered parts warranty is 10 years. Its 10-year unit replacement coverage requires proof of annual maintenance. Several sites still advertise a “lifetime compressor warranty” for Amana, but we could not confirm that term on any current R-32 Amana air conditioner, so don’t count on it without seeing it in writing.
See our Amana air conditioner review.
Best ductless brand: Mitsubishi Electric
For additions, ADUs and rooms the ducts never reached, a ductless mini-split usually beats extending ductwork. Mitsubishi’s FS series is rated from 26.3 to 32.2 SEER2 across its 6,000 to 12,000 Btu sizes, and its newer FX Deluxe is rated up to 35 SEER2. The 2023 FS submittals list R-410A, and Mitsubishi lists the FX Deluxe on R-454B. Standard warranty is 5 years parts and 7 years compressor, 10 and 10 when registered within 90 days, and 12 and 12 when installed and registered by a Mitsubishi Diamond Contractor. Mitsubishi’s warranty does not require registration in California. Labor is not covered. See our Mitsubishi service page.
Why York is not in our top 10 this year
York is now owned by Bosch. Its verified flagship, the Affinity YXT, is rated 18 SEER2 (19 SEER) and runs on R-410A. York’s R-454B lineup (YC3, YC4 and YC6) is available, but we could not confirm a current R-454B flagship rating from York itself. We will revisit when York publishes it. Our York service page covers repairs on existing systems.
Warranty registration in California: the detail most lists miss
Most “10-year warranties” become 5-year warranties if nobody registers the unit in time. California is treated differently by some manufacturers:
- Registration not required in California, per the warranty text: Bryant, Daikin, Goodman, Lennox and Mitsubishi.
- Same terms registered or not: the Rheem and Ruud flagships.
- Register or lose coverage: Trane and American Standard (60 days) and Carrier (90 days). Their warranties do not list a California exception.
Whatever the brand, ask your installer to register the equipment and send you the confirmation. It takes ten minutes and protects the whole term.
What changed for AC buyers in 2025 and 2026
- New refrigerants. New residential systems are built with R-454B (Trane, American Standard, Carrier, Bryant, Lennox, Rheem, Ruud, York) or R-32 (Daikin, Goodman, Amana). Both are mildly flammable A2L refrigerants, so new equipment includes leak detection.
- R-410A stock. EPA’s May 2026 final rule removed the January 1, 2026 installation deadline and allows R-410A equipment manufactured before 2025 to be installed until supply runs out. If a quote offers R-410A equipment, it is old stock. That is legal, but ask why, and price it accordingly.
- California minimums. In the Southwest region, which includes California, split ACs under 45,000 Btu/h must meet at least 14.3 SEER2 and 11.7 EER2 (or 9.8 EER2 if SEER2 is 15.2 or higher). Larger units need 13.8 SEER2. EER2 measures efficiency at peak heat, so it matters in the Sacramento Valley.
- No federal tax credit. The IRS confirms the 25C energy efficient home improvement credit is not allowed for property placed in service after December 31, 2025.
What a new AC costs in the Sacramento area
Brand affects price less than size, efficiency tier and the condition of your ducts. From our new HVAC system cost guide:
- AC-only replacement on good ductwork: usually $6,000 to $14,000.
- 3 to 3.5 ton AC, the most common size here: roughly $8,000 to $11,000 installed.
- AC and furnace together, standard efficiency: generally $11,000 to $15,000.
Within one brand, moving from a single-stage to a variable-speed model can add more to the price than switching brands. For a side-by-side view of tiers, see our AC brand comparison, and for how to read quotes line by line, see how to compare HVAC quotes.
Permits, Title 24 and rebates in Sacramento
Replacing a central AC in California requires a permit, and the job has to meet the Title 24 energy code. Under the 2022 code text, replacing the outdoor condensing unit of a split system triggers duct leakage testing in all climate zones, with a few exceptions, and in climate zone 12, which covers Sacramento, the refrigerant charge and airflow must be field-verified by a third-party rater. The 2025 code took effect January 1, 2026, so ask your contractor which verifications your permit requires.
Rebates depend on your utility:
- SMUD: no rebate is listed for a standard central AC. SMUD’s heat pump rebate is up to $3,000, requires at least 15.2 SEER2 and an installer in the SMUD Contractor Network.
- Roseville Electric: programs change during the year, so check roseville.ca.us or call the utility before you buy.
If you are replacing both the AC and the furnace, a heat pump may qualify for rebates that an AC does not. See our best heat pump brands guide and best furnace brands for the heating side.
How we ranked these brands
We scored each brand on five factors, using manufacturer documents read in October 2026 and our own service experience in the Sacramento area:
- Warranty terms (25%): length, what is covered, registration rules and the California treatment.
- Efficiency (20%): the highest SEER2 and EER2 in the current lineup.
- Parts and service support (20%): how easily a local technician can get parts and diagnose the system.
- Value (20%): what you get for the price at each tier.
- Current lineup (15%): range of tiers on the new refrigerants, from single-stage to variable-speed.
The full air conditioner brands list, by manufacturer
There are far more AC brands than manufacturers. If a quote names a brand you don’t recognize, it almost certainly belongs to one of these companies:
| Manufacturer | Brands it sells under |
|---|---|
| Carrier Global | Carrier, Bryant, Payne, Heil, Tempstar, Comfortmaker, Day & Night, Arcoaire |
| Trane Technologies | Trane, American Standard, Ameristar |
| Daikin | Daikin, Goodman, Amana |
| Lennox International | Lennox, and through Allied Air: Armstrong Air, AirEase, Concord, Ducane, MagicPak |
| Rheem Manufacturing | Rheem, Ruud, WeatherKing, Sure Comfort, Richmond, Friedrich, and since October 2024 Frigidaire, Maytag, Broan, Gibson, Miller and Intertherm |
| Bosch | Bosch, York, Coleman, Luxaire, Champion, Guardian, Evcon, TempMaster, Hitachi |
| Midea Group | Midea, plus components inside a large share of other brands |
| Mitsubishi Electric | Mitsubishi Electric, and Trane ductless through the METUS joint venture |
Two of these changes are recent. Bosch closed its purchase of Johnson Controls’ residential and light commercial HVAC business in August 2025, which is why York, Coleman and Luxaire are now Bosch brands. Rheem acquired Nortek Global HVAC in October 2024, which brought Frigidaire and Maytag air conditioners under the same company as Ruud. We explain how to use this map to save money in our guide to the best HVAC brands and who really makes them.
Keep reading
- Most reliable AC brands: what the Consumer Reports owner survey of 13,306 members shows, and why “reliable” and “best” are different lists.
- Air conditioner brands to avoid: which warnings are real and which are out of date.
- Best central air conditioner brands: ducted split systems only.
- AC brand comparison: head-to-head matchups like Trane vs Carrier.
Ready to replace your system? We service every brand on this list across Roseville, Sacramento, Rocklin, Folsom and Elk Grove, and we will tell you honestly which one fits your house. See our AC installation and replacement service.
