What is the SEER2 rating of the Fujitsu AOUH12LMAS1?

The Fujitsu AOUH12LMAS1 is rated at up to 23.0 SEER2 and 12.5 EER2 for cooling and up to 11.1 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.

Is the Fujitsu AOUH12LMAS1 good for cold climates?

It is not cold-climate certified: none of its matchups meet the ENERGY STAR cold-climate criteria (a COP of at least 1.75 at 5°F among other limits). In places with frequent sub-zero nights, pick a cold-climate 12,000 BTU model.

How much does the Fujitsu AOUH12LMAS1 cost to run per year?

At its rated efficiency it costs about $246-$678 a year in electricity in large U.S. cities, depending on climate and local rates - for example $306 in Phoenix and $568 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.

Which indoor units work with the Fujitsu AOUH12LMAS1?

ENERGY STAR lists 1 certified combination for this outdoor unit. The highest-rated one uses FUJITSU ASUH12LMAS.

What refrigerant does the Fujitsu AOUH12LMAS1 use?

It uses R-410A. R-410A is being phased down under the EPA AIM Act, and new systems are moving to R-454B and R-32.

12,000 BTU mini-split heat pump · H-Series

Fujitsu AOUH12LMAS1

Average cooling efficiency and very good heating efficiency for a 12,000 BTU mini-split heat pump, but not rated for cold climates.

Ranks #245 of 394 12,000 BTU mini-splits for cooling efficiency, and costs about $281 a year to run in a mixed climate like Atlanta.

SEER2: 23.0 Cooling efficiency over a season
Average · beats 62%
HSPF2: 11.1 Heating efficiency over a season
Very good · beats 78%
EER2: 12.5 Cooling efficiency on a 95°F day
Average · beats 44%
Heat at 5°F: 10,300 BTU/h86% of its 47°F output
Excellent · beats 90%

A good fit if…

It will heat most of the year - its HSPF2 beats 78% of mini-splits.
You want steady temperatures and quiet running - the compressor varies its speed.

Think twice if…

You often see nights below 0°F - it is not cold-climate certified.
You want the newest refrigerant - it uses R-410A, which is being phased down.

Calculate my running cost

Details

Specifications12,000 BTU, R-410A

General
Brand	Fujitsu
Outdoor unit model	AOUH12LMAS1
Series	H-Series
Type	Mini-split heat pump
Nominal size	12,000 BTU
CompressorVariable-speed units run longer at low power	Continuously variable
Refrigerant	R-410A
Connected (smart) capable	No
On the market since	January 2, 2022
Last certified	June 5, 2026
Cooling
SEER2Seasonal efficiency, higher is better	23.0 (range 23.0)
EER2Efficiency at 95°F outdoors	12.5
Cooling capacity	12,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	11.1
Capacity at 47°F	12,000 BTU/h
Capacity at 17°F	8,800 BTU/h
Capacity at 5°F	10,300 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	2.36
ENERGY STAR cold climate	No

Heating output as it gets colder86% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with ASUH12LMAS at the standard test temperatures, in BTU/h:

Certified matchups1 indoor units

The same outdoor unit scores differently with each indoor unit. Ask your installer for the AHRI reference number of the exact system you are quoted.

Indoor unit	SEER2	EER2	HSPF2	Heat @5°F	AHRI ref.
ASUH12LMAS FUJITSU	23.0	12.5	11.1	10,300	207615689

Yearly running cost in 10 large cities$246-$678

Phoenix, AZ$306/yr
Miami, FL$246/yr
Houston, TX$274/yr
Atlanta, GA$281/yr
Los Angeles, CA$275/yr
New York, NY$678/yr
Chicago, IL$551/yr
Denver, CO$459/yr
Seattle, WA$283/yr
Minneapolis, MN$568/yr

At each state's average electricity price and the city's typical heating and cooling hours.

Questions5

What is the SEER2 rating of the Fujitsu AOUH12LMAS1?: The Fujitsu AOUH12LMAS1 is rated at up to 23.0 SEER2 and 12.5 EER2 for cooling and up to 11.1 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.
Is the Fujitsu AOUH12LMAS1 good for cold climates?: It is not cold-climate certified: none of its matchups meet the ENERGY STAR cold-climate criteria (a COP of at least 1.75 at 5°F among other limits). In places with frequent sub-zero nights, pick a cold-climate 12,000 BTU model.
How much does the Fujitsu AOUH12LMAS1 cost to run per year?: At its rated efficiency it costs about $246-$678 a year in electricity in large U.S. cities, depending on climate and local rates - for example $306 in Phoenix and $568 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
Which indoor units work with the Fujitsu AOUH12LMAS1?: ENERGY STAR lists 1 certified combination for this outdoor unit. The highest-rated one uses FUJITSU ASUH12LMAS.
What refrigerant does the Fujitsu AOUH12LMAS1 use?: It uses R-410A. R-410A is being phased down under the EPA AIM Act, and new systems are moving to R-454B and R-32.

Running cost and savings

Pre-filled with this model. Pick your city and what you heat with today; everything else is optional.

Heat pump $305/yrYou save $314/yrSee details ↓

1. Where you live

StateCityElectricity ¢ per kWh

Adjust heating and cooling hours

Filled in from your city's climate. Change them if you run the system much more or less than usual.

Cooling hours full-load hours per yearHeating hours full-load hours per year

2. The heat pump Fujitsu AOUH12LMAS1

Find a model (fills in the ratings below)

SEER2 cooling efficiencyHSPF2 heating efficiencyCooling capacity BTU/hHeating capacity BTU/h

3. What it replaces

Current heatingFurnace efficiency (AFUE %)Gas price, $/thermCurrent coolingOld AC rating SEER2 (10 ≈ 15+ years old)

4. Price replace the example with your quote

Installed price, $Rebates and incentives, $ utility, state

Heat pump, per year: $305
Current system, per year: $619
You save per year: $314
Payback: 14.3 years
Net after 10 years: -$1,360

Cooling $184Heating $121Electricity used: 1,905 kWhSaved vs. a minimum-efficiency heat pump: $170

Estimates use the unit's rated SEER2 and HSPF2, full-load hours derived from NOAA 1991-2020 degree days, average residential electricity prices from the U.S. EIA (12 months to July 2026) and fuel prices from EIA (2025 for natural gas, week of 2026-10-05 for propane and heating oil). Very cold days that need backup heat are not modelled. Federal minimum for comparison: 14.3 SEER2 / 7.5 HSPF2.

Similar 12,000 BTU models

York YPAS12BLFASDQ1 · cold climate23.0 SEER2 · 11.3 HSPF2
GE Appliances ASH112PRDB · cold climate23.0 SEER2 · 10.5 HSPF2
Star Air Kontrol SAK-12-22MS/22023.1 SEER2 · 9.3 HSPF2
GE Appliances 1G12AD2BE · cold climate23.0 SEER2 · 10.2 HSPF2
KANIONco KWSM-12IR410AHS22MV23.1 SEER2 · 9.3 HSPF2
GE Appliances ASH112PRDWA23.0 SEER2 · 10.2 HSPF2
DUCTLESSAIRE 454-12-O-DA · cold climate23.1 SEER2 · 10.2 HSPF2
AUX ASW-H12C5C2/*R3DI-C5 · cold climate23.0 SEER2 · 10.1 HSPF2

See all 394 12,000 BTU mini-splits, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of June 5, 2026. How we use the data.