What is the SEER2 rating of the Arcoaire D5CSRAH12AAK?

The Arcoaire D5CSRAH12AAK is rated at up to 25.5 SEER2 and 13.1 EER2 for cooling and up to 11.0 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 66 certified matchups SEER2 ranges from 19.0-25.5.

Is the Arcoaire D5CSRAH12AAK good for cold climates?

Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 8,900 BTU/h at 5°F with a COP of 2.50, so it is still 2.5 times as efficient as electric resistance heat at that temperature.

How much does the Arcoaire D5CSRAH12AAK cost to run per year?

At its rated efficiency it costs about $222-$670 a year in electricity in large U.S. cities, depending on climate and local rates - for example $285 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 Arcoaire D5CSRAH12AAK?

ENERGY STAR lists 66 certified combinations for this outdoor unit. The highest-rated ones use ARCOAIRE D5FSHAH12XAK, COMFORTMAKER D5FSHAH12XAK, DAY & NIGHT D5FSHAH12XAK.

12,000 BTU mini-split heat pump · D5F Series

Arcoaire D5CSRAH12AAK

Very good cooling and heating efficiency for a 12,000 BTU mini-split heat pump, and certified for cold climates.

Ranks #50 of 394 12,000 BTU mini-splits for cooling efficiency, and costs about $273 a year to run in a mixed climate like Atlanta.

SEER2: 25.5 Cooling efficiency over a season
Very good · beats 88%
HSPF2: 11.0 Heating efficiency over a season
Very good · beats 75%
EER2: 13.1 Cooling efficiency on a 95°F day
Average · beats 68%
Heat at 5°F: 8,900 BTU/h70% of its 47°F output
Excellent · beats 97%

A good fit if…

You want low cooling bills - its SEER2 beats 88% of mini-splits.
Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 8,900 BTU/h at 5°F.
It will heat most of the year - its HSPF2 beats 75% of mini-splits.
You want steady temperatures and quiet running - the compressor varies its speed.

Think twice if…

Nothing stands out - its ratings have no weak spot for its class.

Calculate my running cost

Details

Specifications12,000 BTU, R-454B

General
Brand	Arcoaire
Also sold as	Comfortmaker, Day & Night, Heil, Keeprite, Kenmore, Midea, Tempstar, Smart Comfort, Airquest, LPS Legacy
Outdoor unit model	D5CSRAH12AAK
Series	D5F Series
Type	Mini-split heat pump
Nominal size	12,000 BTU
CompressorVariable-speed units run longer at low power	Continuously variable
Refrigerant	R-454B
Connected (smart) capable	No
On the market since	November 15, 2018
Last certified	May 6, 2026
Cooling
SEER2Seasonal efficiency, higher is better	25.5 (range 19.0-25.5)
EER2Efficiency at 95°F outdoors	11.7-13.1
Cooling capacity	11,500-12,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	10.1-11.0
Capacity at 47°F	12,000 BTU/h
Capacity at 17°F	8,500-10,100 BTU/h
Capacity at 5°F	8,400-8,900 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	2.25-2.50
ENERGY STAR cold climate	Yes

Heating output as it gets colder70% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with D5FSHAH12XAK at the standard test temperatures, in BTU/h:

Certified matchups66 indoor units

The same outdoor unit scores differently with each indoor unit. The 60 highest-rated of 66 are shown. 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.
D5FSHAH12XAK ARCOAIRE · cold climate	25.5	13.1	10.7	8,400	215324136
D5FSHAH12XAK COMFORTMAKER · cold climate	25.5	13.1	10.7	8,400	215324209
D5FSHAH12XAK DAY & NIGHT · cold climate	25.5	13.1	10.7	8,400	215324282
D5FSHAH12XAK HEIL · cold climate	25.5	13.1	10.7	8,400	215324355
D5FSHAH12XAK KEEPRITE · cold climate	25.5	13.1	10.7	8,400	215324428
D5FSHAH12XAK KENMORE · cold climate	25.5	13.1	10.7	8,400	215324501
D5FSHAH12XAK MIDEA · cold climate	25.5	13.1	10.7	8,400	215324574
D5FSHAH12XAK TEMPSTAR · cold climate	25.5	13.1	10.7	8,400	215324647
D5FSHAH12XAK SMART COMFORT · cold climate	25.5	13.1	10.7	8,400	215324720
D5FSHAH12XAK AIRQUEST · cold climate	25.5	13.1	10.7	8,400	215324793
D5FSHAH12XAK LPS Legacy · cold climate	25.5	13.1	10.7	8,400	215324866
D5FSFAH12XAK ARCOAIRE · cold climate	24.7	12.7	11.0	8,900	215324139
D5FSFAH12XAK COMFORTMAKER · cold climate	24.7	12.7	11.0	8,900	215324212
D5FSFAH12XAK DAY & NIGHT · cold climate	24.7	12.7	11.0	8,900	215324285
D5FSFAH12XAK HEIL · cold climate	24.7	12.7	11.0	8,900	215324358
D5FSFAH12XAK KEEPRITE · cold climate	24.7	12.7	11.0	8,900	215324431
D5FSFAH12XAK KENMORE · cold climate	24.7	12.7	11.0	8,900	215324504
D5FSFAH12XAK MIDEA · cold climate	24.7	12.7	11.0	8,900	215324577
D5FSFAH12XAK TEMPSTAR · cold climate	24.7	12.7	11.0	8,900	215324650
D5FSFAH12XAK SMART COMFORT · cold climate	24.7	12.7	11.0	8,900	215324723
D5FSFAH12XAK AIRQUEST · cold climate	24.7	12.7	11.0	8,900	215324796
D5FSFAH12XAK LPS Legacy · cold climate	24.7	12.7	11.0	8,900	215324869
D5FSOAH12XAK ARCOAIRE · cold climate	22.2	12.3	10.1	8,600	215324137
D5FSOAH12XAK COMFORTMAKER · cold climate	22.2	12.3	10.1	8,600	215324210
D5FSOAH12XAK DAY & NIGHT · cold climate	22.2	12.3	10.1	8,600	215324283
D5FSOAH12XAK HEIL · cold climate	22.2	12.3	10.1	8,600	215324356
D5FSOAH12XAK KEEPRITE · cold climate	22.2	12.3	10.1	8,600	215324429
D5FSOAH12XAK KENMORE · cold climate	22.2	12.3	10.1	8,600	215324502
D5FSOAH12XAK MIDEA · cold climate	22.2	12.3	10.1	8,600	215324575
D5FSOAH12XAK TEMPSTAR · cold climate	22.2	12.3	10.1	8,600	215324648
D5FSOAH12XAK SMART COMFORT · cold climate	22.2	12.3	10.1	8,600	215324721
D5FSOAH12XAK AIRQUEST · cold climate	22.2	12.3	10.1	8,600	215324794
D5FSOAH12XAK LPS Legacy · cold climate	22.2	12.3	10.1	8,600	215324867
D5FSCAH12XAK ARCOAIRE · cold climate	21.2	12.5	10.4	8,400	215324138
D5FSCAH12XAK COMFORTMAKER · cold climate	21.2	12.5	10.4	8,400	215324211
D5FSCAH12XAK DAY & NIGHT · cold climate	21.2	12.5	10.4	8,400	215324284
D5FSCAH12XAK HEIL · cold climate	21.2	12.5	10.4	8,400	215324357
D5FSCAH12XAK KEEPRITE · cold climate	21.2	12.5	10.4	8,400	215324430
D5FSCAH12XAK KENMORE · cold climate	21.2	12.5	10.4	8,400	215324503
D5FSCAH12XAK MIDEA · cold climate	21.2	12.5	10.4	8,400	215324576
D5FSCAH12XAK TEMPSTAR · cold climate	21.2	12.5	10.4	8,400	215324649
D5FSCAH12XAK SMART COMFORT · cold climate	21.2	12.5	10.4	8,400	215324722
D5FSCAH12XAK AIRQUEST · cold climate	21.2	12.5	10.4	8,400	215324795
D5FSCAH12XAK LPS Legacy · cold climate	21.2	12.5	10.4	8,400	215324868
D5FSDAH12XHK ARCOAIRE · cold climate	19.5	12.0	10.5	8,900	215324141
D5FSDAH12XHK COMFORTMAKER · cold climate	19.5	12.0	10.5	8,900	215324214
D5FSDAH12XHK DAY & NIGHT · cold climate	19.5	12.0	10.5	8,900	215324287
D5FSDAH12XHK HEIL · cold climate	19.5	12.0	10.5	8,900	215324360
D5FSDAH12XHK KEEPRITE · cold climate	19.5	12.0	10.5	8,900	215324433
D5FSDAH12XHK KENMORE · cold climate	19.5	12.0	10.5	8,900	215324506
D5FSDAH12XHK MIDEA · cold climate	19.5	12.0	10.5	8,900	215324579
D5FSDAH12XHK TEMPSTAR · cold climate	19.5	12.0	10.5	8,900	215324652
D5FSDAH12XHK SMART COMFORT · cold climate	19.5	12.0	10.5	8,900	215324725
D5FSDAH12XHK AIRQUEST · cold climate	19.5	12.0	10.5	8,900	215324798
D5FSDAH12XHK LPS Legacy · cold climate	19.5	12.0	10.5	8,900	215324871
D5FSDAH12XAK ARCOAIRE · cold climate	19.0	11.7	10.3	8,800	215324140
D5FSDAH12XAK COMFORTMAKER · cold climate	19.0	11.7	10.3	8,800	215324213
D5FSDAH12XAK DAY & NIGHT · cold climate	19.0	11.7	10.3	8,800	215324286
D5FSDAH12XAK HEIL · cold climate	19.0	11.7	10.3	8,800	215324359
D5FSDAH12XAK KEEPRITE · cold climate	19.0	11.7	10.3	8,800	215324432

Yearly running cost in 10 large cities$222-$670

Phoenix, AZ$285/yr
Miami, FL$222/yr
Houston, TX$255/yr
Atlanta, GA$273/yr
Los Angeles, CA$269/yr
New York, NY$670/yr
Chicago, IL$548/yr
Denver, CO$458/yr
Seattle, WA$284/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 Arcoaire D5CSRAH12AAK?: The Arcoaire D5CSRAH12AAK is rated at up to 25.5 SEER2 and 13.1 EER2 for cooling and up to 11.0 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 66 certified matchups SEER2 ranges from 19.0-25.5.
Is the Arcoaire D5CSRAH12AAK good for cold climates?: Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 8,900 BTU/h at 5°F with a COP of 2.50, so it is still 2.5 times as efficient as electric resistance heat at that temperature.
How much does the Arcoaire D5CSRAH12AAK cost to run per year?: At its rated efficiency it costs about $222-$670 a year in electricity in large U.S. cities, depending on climate and local rates - for example $285 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 Arcoaire D5CSRAH12AAK?: ENERGY STAR lists 66 certified combinations for this outdoor unit. The highest-rated ones use ARCOAIRE D5FSHAH12XAK, COMFORTMAKER D5FSHAH12XAK, DAY & NIGHT D5FSHAH12XAK.
What refrigerant does the Arcoaire D5CSRAH12AAK use?: It uses R-454B.

Running cost and savings

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

Heat pump $288/yrYou save $331/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 Arcoaire D5CSRAH12AAK

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: $288
Current system, per year: $619
You save per year: $331
Payback: 13.6 years
Net after 10 years: -$1,191

Cooling $166Heating $122Electricity used: 1,799 kWhSaved vs. a minimum-efficiency heat pump: $187

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

AC Pro MHPC-H-012BSB · cold climate25.5 SEER2 · 11.0 HSPF2
Carrier 37MARAQ12AA3 · cold climate25.5 SEER2 · 11.0 HSPF2
LG KUSAL121A · cold climate25.5 SEER2 · 11.2 HSPF2
DIRECT AIR DIRM4-12DA25-1Z · cold climate25.5 SEER2 · 11.0 HSPF2
NOVAIR LEA12SZ26-O · cold climate25.5 SEER2 · 11.5 HSPF2
Midea MO1ES-H12B-2A · cold climate25.5 SEER2 · 11.0 HSPF2
MDV MOX230-12HFN10-M1 · cold climate25.5 SEER2 · 11.5 HSPF2
Airquest DLCSRBH12AAK · cold climate25.5 SEER2 · 10.7 HSPF2

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

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of May 6, 2026. How we use the data.