What is the SEER2 rating of the Fujitsu AOU24RLXFZ?

The Fujitsu AOU24RLXFZ is rated at up to 18.5 SEER2 and 12.5 EER2 for cooling and up to 8.7 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.

Is the Fujitsu AOU24RLXFZ 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 24,000 BTU model.

How much does the Fujitsu AOU24RLXFZ cost to run per year?

At its rated efficiency it costs about $562-$1,695 a year in electricity in large U.S. cities, depending on climate and local rates - for example $719 in Phoenix and $1,437 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 AOU24RLXFZ 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 AOU24RLXFZ

Below average cooling and heating efficiency for a 24,000 BTU mini-split heat pump, but not rated for cold climates.

Ranks #402 of 430 24,000 BTU mini-splits for cooling efficiency, and costs about $690 a year to run in a mixed climate like Atlanta.

SEER2: 18.5 Cooling efficiency over a season
Below average · beats 6%
HSPF2: 8.7 Heating efficiency over a season
Below average · beats 5%
EER2: 12.5 Cooling efficiency on a 95°F day
Average · beats 44%
Heat at 5°F: - Not reported by the maker

A good fit if…

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.
Cooling cost matters most - its SEER2 is below average for mini-splits.
You mainly need heat - its HSPF2 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	AOU24RLXFZ
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	May 28, 2026
Cooling
SEER2Seasonal efficiency, higher is better	18.5 (range 18.5)
EER2Efficiency at 95°F outdoors	12.5
Cooling capacity	22,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	8.7
Capacity at 47°F	24,000 BTU/h
Capacity at 17°F	14,100 BTU/h
Capacity at 5°F	-
COP at 5°F2.0 = twice as efficient as a space heater	-
ENERGY STAR cold climate	No

Heating output as it gets colder

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 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.
- FUJITSU	18.5	12.5	8.7	-	6998279

Yearly running cost in 10 large cities$562-$1,695

Phoenix, AZ$719/yr
Miami, FL$562/yr
Houston, TX$646/yr
Atlanta, GA$690/yr
Los Angeles, CA$680/yr
New York, NY$1,695/yr
Chicago, IL$1,385/yr
Denver, CO$1,158/yr
Seattle, WA$717/yr
Minneapolis, MN$1,437/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 AOU24RLXFZ?: The Fujitsu AOU24RLXFZ is rated at up to 18.5 SEER2 and 12.5 EER2 for cooling and up to 8.7 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.
Is the Fujitsu AOU24RLXFZ 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 24,000 BTU model.
How much does the Fujitsu AOU24RLXFZ cost to run per year?: At its rated efficiency it costs about $562-$1,695 a year in electricity in large U.S. cities, depending on climate and local rates - for example $719 in Phoenix and $1,437 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 AOU24RLXFZ 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 $728/yrYou save $440/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 AOU24RLXFZ

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: $728
Current system, per year: $1,167
You save per year: $440
Payback: 19.3 years
Net after 10 years: -$4,105

Cooling $419Heating $309Electricity used: 4,547 kWhSaved vs. a minimum-efficiency heat pump: $172

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

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AproDr AAG22-24H1B · cold climate18.5 SEER2 · 9.0 HSPF2
Midea 37MTRAQ27DA3 · cold climate18.5 SEER2 · 8.5 HSPF2
Lennox VPC024H5M-3P · cold climate18.5 SEER2 · 10.0 HSPF2
Hitachi RAC-DJ24WHAA · cold climate18.3 SEER2 · 10.0 HSPF2
Friedrich FPHFR24A3A · cold climate18.5 SEER2 · 10.0 HSPF2
York YRACDJ24WHAA · cold climate18.3 SEER2 · 10.0 HSPF2

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

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of May 28, 2026. How we use the data.