What is the SEER2 rating of the Fujitsu AOU24RLXFZH?

The Fujitsu AOU24RLXFZH is rated at up to 20.0 SEER2 and 13.3 EER2 for cooling and up to 10.0 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 3 certified matchups SEER2 ranges from 17.8-20.0.

Is the Fujitsu AOU24RLXFZH good for cold climates?

Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 25,600 BTU/h at 5°F with a COP of 2.06, so it is still 2.1 times as efficient as electric resistance heat at that temperature.

How much does the Fujitsu AOU24RLXFZH cost to run per year?

At its rated efficiency it costs about $519-$1,490 a year in electricity in large U.S. cities, depending on climate and local rates - for example $654 in Phoenix and $1,256 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.

What refrigerant does the Fujitsu AOU24RLXFZH 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.

24,000 BTU mini-split heat pump · H-Series

Fujitsu AOU24RLXFZH

Below average cooling efficiency and average heating efficiency for a 24,000 BTU mini-split heat pump, and certified for cold climates.

Ranks #332 of 430 24,000 BTU mini-splits for cooling efficiency, and costs about $613 a year to run in a mixed climate like Atlanta.

SEER2: 20.0 Cooling efficiency over a season
Below average · beats 18%
HSPF2: 10.0 Heating efficiency over a season
Average · beats 43%
EER2: 13.3 Cooling efficiency on a 95°F day
Very good · beats 70%
Heat at 5°F: 25,600 BTU/h107% of its 47°F output
Average · beats 61%

A good fit if…

Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 25,600 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.
You want the newest refrigerant - it uses R-410A, which is being phased down.

Calculate my running cost

Details

Specifications24,000 BTU, R-410A

General
Brand	Fujitsu
Outdoor unit model	AOU24RLXFZH
Series	H-Series
Type	Mini-split heat pump
Nominal size	24,000 BTU
CompressorVariable-speed units run longer at low power	Continuously variable
Refrigerant	R-410A
Connected (smart) capable	No
On the market since	January 1, 2016
Last certified	June 5, 2026
Cooling
SEER2Seasonal efficiency, higher is better	20.0 (range 17.8-20.0)
EER2Efficiency at 95°F outdoors	12.1-13.3
Cooling capacity	22,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	9.2-10.0
Capacity at 47°F	24,000 BTU/h
Capacity at 17°F	15,400 BTU/h
Capacity at 5°F	25,600 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	2.06
ENERGY STAR cold climate	Yes

Heating output as it gets colder107% kept at 5°F

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

Certified matchups3 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.
- FUJITSU · cold climate	20.0	13.3	10.0	25,600	8033586
- FUJITSU · cold climate	18.9	12.7	9.6	25,600	8063925
- FUJITSU · cold climate	17.8	12.1	9.2	25,600	8033742

Yearly running cost in 10 large cities$519-$1,490

Phoenix, AZ$654/yr
Miami, FL$519/yr
Houston, TX$586/yr
Atlanta, GA$613/yr
Los Angeles, CA$601/yr
New York, NY$1,490/yr
Chicago, IL$1,215/yr
Denver, CO$1,014/yr
Seattle, WA$626/yr
Minneapolis, MN$1,256/yr

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

Questions4

What is the SEER2 rating of the Fujitsu AOU24RLXFZH?: The Fujitsu AOU24RLXFZH is rated at up to 20.0 SEER2 and 13.3 EER2 for cooling and up to 10.0 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 3 certified matchups SEER2 ranges from 17.8-20.0.
Is the Fujitsu AOU24RLXFZH good for cold climates?: Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 25,600 BTU/h at 5°F with a COP of 2.06, so it is still 2.1 times as efficient as electric resistance heat at that temperature.
How much does the Fujitsu AOU24RLXFZH cost to run per year?: At its rated efficiency it costs about $519-$1,490 a year in electricity in large U.S. cities, depending on climate and local rates - for example $654 in Phoenix and $1,256 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
What refrigerant does the Fujitsu AOU24RLXFZH 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 $656/yrYou save $511/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 AOU24RLXFZH

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: $656
Current system, per year: $1,167
You save per year: $511
Payback: 16.6 years
Net after 10 years: -$3,389

Cooling $387Heating $269Electricity used: 4,100 kWhSaved vs. a minimum-efficiency heat pump: $244

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 24,000 BTU models

Blueridge BMKH24M23UH · cold climate20.0 SEER2 · 10.0 HSPF2
Mitsubishi Electric MXZ-3C24NA4- · cold climate20.0 SEER2 · 10.0 HSPF2
American Standard / Mitsubishi Electric NTXMMX24A132C · cold climate20.0 SEER2 · 10.0 HSPF2
Mitsubishi Electric MXZ-3D24NL · cold climate20.0 SEER2 · 10.0 HSPF2
Hitachi RAC-PH24WHLAE20.0 SEER2 · 10.5 HSPF2
Mitsubishi Electric MXZ-3D24NLHZ · cold climate20.0 SEER2 · 10.0 HSPF2
Hisense AUW-24U3TK1 · cold climate20.0 SEER2 · 10.5 HSPF2
Rheem RO3HFZ24AJ1H · cold climate20.0 SEER2 · 10.0 HSPF2

See all 430 24,000 BTU mini-splits, ranked

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