What is the SEER2 rating of the Fujitsu AOUH36KUAS1?

The Fujitsu AOUH36KUAS1 is rated at up to 21.3 SEER2 and 11.2 EER2 for cooling and up to 10.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 4 certified matchups SEER2 ranges from 17.6-21.3.

Is the Fujitsu AOUH36KUAS1 good for cold climates?

Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 32,000 BTU/h at 5°F with a COP of 2.18, so it is still 2.2 times as efficient as electric resistance heat at that temperature.

How much does the Fujitsu AOUH36KUAS1 cost to run per year?

At its rated efficiency it costs about $796-$2,255 a year in electricity in large U.S. cities, depending on climate and local rates - for example $999 in Phoenix and $1,897 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 AOUH36KUAS1?

ENERGY STAR lists 4 certified combinations for this outdoor unit. The highest-rated ones use FUJITSU AUUH36KUAS, FUJITSU ABUH36KUAS, FUJITSU ARUH36KUAS.

36,000 BTU mini-split heat pump · AIRSTAGE H-series

Fujitsu AOUH36KUAS1

Below average cooling efficiency and average heating efficiency for a 36,000 BTU mini-split heat pump, and certified for cold climates.

Ranks #100 of 205 36,000 BTU mini-splits for cooling efficiency, and costs about $931 a year to run in a mixed climate like Atlanta.

SEER2: 21.3 Cooling efficiency over a season
Below average · beats 35%
HSPF2: 10.5 Heating efficiency over a season
Average · beats 61%
EER2: 11.2 Cooling efficiency on a 95°F day
Below average · beats 11%
Heat at 5°F: 32,000 BTU/h82% of its 47°F output
Very good · beats 76%

A good fit if…

Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 32,000 BTU/h at 5°F.
You want steady temperatures and quiet running - the compressor varies its speed.

Think twice if…

Cooling cost matters most - its SEER2 is below average for mini-splits.

Calculate my running cost

Details

Specifications36,000 BTU, R-32

General
Brand	Fujitsu
Outdoor unit model	AOUH36KUAS1
Series	AIRSTAGE H-series
Type	Mini-split heat pump
Nominal size	36,000 BTU
CompressorVariable-speed units run longer at low power	Continuously variable
Refrigerant	R-32
Connected (smart) capable	No
On the market since	September 9, 2024
Last certified	April 17, 2026
Cooling
SEER2Seasonal efficiency, higher is better	21.3 (range 17.6-21.3)
EER2Efficiency at 95°F outdoors	10.4-11.2
Cooling capacity	36,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	9.8-10.5
Capacity at 47°F	38,000 BTU/h
Capacity at 17°F	25,400-27,400 BTU/h
Capacity at 5°F	31,000-32,000 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	2.08-2.18
ENERGY STAR cold climate	Yes

Heating output as it gets colder82% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with AUUH36KUAS at the standard test temperatures, in BTU/h:

Certified matchups4 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.
AUUH36KUAS FUJITSU · cold climate	21.3	11.2	10.5	31,000	215434555
ABUH36KUAS FUJITSU · cold climate	21.3	11.2	10.4	31,000	215434551
ARUH36KUAS FUJITSU · cold climate	18.0	10.4	9.8	31,000	215434560
AMUH36KUAS FUJITSU · cold climate	17.6	10.6	9.8	32,000	217290596

Yearly running cost in 10 large cities$796-$2,255

Phoenix, AZ$999/yr
Miami, FL$796/yr
Houston, TX$896/yr
Atlanta, GA$931/yr
Los Angeles, CA$911/yr
New York, NY$2,255/yr
Chicago, IL$1,836/yr
Denver, CO$1,531/yr
Seattle, WA$945/yr
Minneapolis, MN$1,897/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 AOUH36KUAS1?: The Fujitsu AOUH36KUAS1 is rated at up to 21.3 SEER2 and 11.2 EER2 for cooling and up to 10.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 4 certified matchups SEER2 ranges from 17.6-21.3.
Is the Fujitsu AOUH36KUAS1 good for cold climates?: Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 32,000 BTU/h at 5°F with a COP of 2.18, so it is still 2.2 times as efficient as electric resistance heat at that temperature.
How much does the Fujitsu AOUH36KUAS1 cost to run per year?: At its rated efficiency it costs about $796-$2,255 a year in electricity in large U.S. cities, depending on climate and local rates - for example $999 in Phoenix and $1,897 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 AOUH36KUAS1?: ENERGY STAR lists 4 certified combinations for this outdoor unit. The highest-rated ones use FUJITSU AUUH36KUAS, FUJITSU ABUH36KUAS, FUJITSU ARUH36KUAS.
What refrigerant does the Fujitsu AOUH36KUAS1 use?: It uses 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 $1,000/yrYou save $889/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 AOUH36KUAS1

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: $1,000
Current system, per year: $1,889
You save per year: $889
Payback: 15.2 years
Net after 10 years: -$4,613

Cooling $595Heating $405Electricity used: 6,252 kWhSaved vs. a minimum-efficiency heat pump: $453

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 36,000 BTU models

MDV MOX630-36HFN10-M2X · cold climate21.3 SEER2 · 11.1 HSPF2
1HVAC ACIQ-36ZPL-HP230C · cold climate21.2 SEER2 · 11.1 HSPF2
Carrier 37MBHAQ36AA3 · cold climate21.3 SEER2 · 11.1 HSPF2
Blueridge BMS36HHUYC · cold climate21.2 SEER2 · 11.1 HSPF2
Arcoaire D5CLHAH36AAK · cold climate21.3 SEER2 · 11.1 HSPF2
ECO-AIR EDSO-36H · cold climate21.2 SEER2 · 11.1 HSPF2
Lennox MMLD036S6M-1P · cold climate21.5 SEER2 · 9.5 HSPF2
Mainline ML36HP230LCMH-O · cold climate21.2 SEER2 · 11.1 HSPF2

See all 205 36,000 BTU mini-splits, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of April 17, 2026. How we use the data.