What is the SEER2 rating of the Arcoaire D5CSHAH12AAK?

The Arcoaire D5CSHAH12AAK is rated at up to 25.5 SEER2 and 13.5 EER2 for cooling and up to 11.6 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 72 certified matchups SEER2 ranges from 20.0-25.5.

Is the Arcoaire D5CSHAH12AAK good for cold climates?

Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 12,000 BTU/h at 5°F with a COP of 2.00, so it is still 2.0 times as efficient as electric resistance heat at that temperature.

How much does the Arcoaire D5CSHAH12AAK cost to run per year?

At its rated efficiency it costs about $222-$642 a year in electricity in large U.S. cities, depending on climate and local rates - for example $280 in Phoenix and $541 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 D5CSHAH12AAK?

ENERGY STAR lists 72 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 D5CSHAH12AAK

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

Ranks #39 of 394 12,000 BTU mini-splits for cooling efficiency, and costs about $264 a year to run in a mixed climate like Atlanta.

SEER2: 25.5 Cooling efficiency over a season
Very good · beats 88%
HSPF2: 11.6 Heating efficiency over a season
Very good · beats 86%
EER2: 13.5 Cooling efficiency on a 95°F day
Very good · beats 74%
Heat at 5°F: 12,000 BTU/h96% of its 47°F output
Average · beats 48%

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 12,000 BTU/h at 5°F.
It will heat most of the year - its HSPF2 beats 86% 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, LPS Legacy, Airquest, Viessmann
Outdoor unit model	D5CSHAH12AAK
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 28, 2026
Cooling
SEER2Seasonal efficiency, higher is better	25.5 (range 20.0-25.5)
EER2Efficiency at 95°F outdoors	12.0-13.5
Cooling capacity	12,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	10.2-11.6
Capacity at 47°F	12,000-12,500 BTU/h
Capacity at 17°F	9,600-12,000 BTU/h
Capacity at 5°F	11,300-12,000 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	1.80-2.00
ENERGY STAR cold climate	Yes

Heating output as it gets colder96% 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 matchups72 indoor units

The same outdoor unit scores differently with each indoor unit. The 60 highest-rated of 72 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	13.5	10.5	11,500	215324111
D5FSHAH12XAK COMFORTMAKER · cold climate	25.5	13.5	10.5	11,500	215324184
D5FSHAH12XAK DAY & NIGHT · cold climate	25.5	13.5	10.5	11,500	215324257
D5FSHAH12XAK HEIL · cold climate	25.5	13.5	10.5	11,500	215324330
D5FSHAH12XAK KEEPRITE · cold climate	25.5	13.5	10.5	11,500	215324403
D5FSHAH12XAK KENMORE · cold climate	25.5	13.5	10.5	11,500	215324476
D5FSHAH12XAK MIDEA · cold climate	25.5	13.5	10.5	11,500	215324549
D5FSHAH12XAK TEMPSTAR · cold climate	25.5	13.5	10.5	11,500	215324622
D5FSHAH12XAK SMART COMFORT · cold climate	25.5	13.5	10.5	11,500	215324695
D5FSHAH12XAK AIRQUEST · cold climate	25.5	13.5	10.5	11,500	215324768
D5FSHAH12XAK LPS Legacy · cold climate	25.5	13.5	10.5	11,500	215324841
D5FSHAH12XAK Viessmann · cold climate	25.5	13.5	10.5	11,500	217178789
D5FSFAH12XAK ARCOAIRE · cold climate	25.0	12.7	10.6	11,300	215324114
D5FSFAH12XAK COMFORTMAKER · cold climate	25.0	12.7	10.6	11,300	215324187
D5FSFAH12XAK DAY & NIGHT · cold climate	25.0	12.7	10.6	11,300	215324260
D5FSFAH12XAK HEIL · cold climate	25.0	12.7	10.6	11,300	215324333
D5FSFAH12XAK KEEPRITE · cold climate	25.0	12.7	10.6	11,300	215324406
D5FSFAH12XAK KENMORE · cold climate	25.0	12.7	10.6	11,300	215324479
D5FSFAH12XAK MIDEA · cold climate	25.0	12.7	10.6	11,300	215324552
D5FSFAH12XAK TEMPSTAR · cold climate	25.0	12.7	10.6	11,300	215324625
D5FSFAH12XAK SMART COMFORT · cold climate	25.0	12.7	10.6	11,300	215324698
D5FSFAH12XAK AIRQUEST · cold climate	25.0	12.7	10.6	11,300	215324771
D5FSFAH12XAK LPS Legacy · cold climate	25.0	12.7	10.6	11,300	215324844
D5FSFAH12XAK Viessmann · cold climate	25.0	12.7	10.6	11,300	217178792
D5FSOAH12XAK ARCOAIRE · cold climate	23.0	13.0	10.2	11,500	215324112
D5FSOAH12XAK COMFORTMAKER · cold climate	23.0	13.0	10.2	11,500	215324185
D5FSOAH12XAK DAY & NIGHT · cold climate	23.0	13.0	10.2	11,500	215324258
D5FSOAH12XAK HEIL · cold climate	23.0	13.0	10.2	11,500	215324331
D5FSOAH12XAK KEEPRITE · cold climate	23.0	13.0	10.2	11,500	215324404
D5FSOAH12XAK KENMORE · cold climate	23.0	13.0	10.2	11,500	215324477
D5FSOAH12XAK MIDEA · cold climate	23.0	13.0	10.2	11,500	215324550
D5FSOAH12XAK TEMPSTAR · cold climate	23.0	13.0	10.2	11,500	215324623
D5FSOAH12XAK SMART COMFORT · cold climate	23.0	13.0	10.2	11,500	215324696
D5FSOAH12XAK AIRQUEST · cold climate	23.0	13.0	10.2	11,500	215324769
D5FSOAH12XAK LPS Legacy · cold climate	23.0	13.0	10.2	11,500	215324842
D5FSOAH12XAK Viessmann · cold climate	23.0	13.0	10.2	11,500	217178790
D5FSCAH12XAK ARCOAIRE · cold climate	22.3	12.7	11.6	11,500	215324113
D5FSCAH12XAK COMFORTMAKER · cold climate	22.3	12.7	11.6	11,500	215324186
D5FSCAH12XAK DAY & NIGHT · cold climate	22.3	12.7	11.6	11,500	215324259
D5FSCAH12XAK HEIL · cold climate	22.3	12.7	11.6	11,500	215324332
D5FSCAH12XAK KEEPRITE · cold climate	22.3	12.7	11.6	11,500	215324405
D5FSCAH12XAK KENMORE · cold climate	22.3	12.7	11.6	11,500	215324478
D5FSCAH12XAK MIDEA · cold climate	22.3	12.7	11.6	11,500	215324551
D5FSCAH12XAK TEMPSTAR · cold climate	22.3	12.7	11.6	11,500	215324624
D5FSCAH12XAK SMART COMFORT · cold climate	22.3	12.7	11.6	11,500	215324697
D5FSCAH12XAK AIRQUEST · cold climate	22.3	12.7	11.6	11,500	215324770
D5FSCAH12XAK LPS Legacy · cold climate	22.3	12.7	11.6	11,500	215324843
D5FSCAH12XAK Viessmann · cold climate	22.3	12.7	11.6	11,500	217178791
D5FSDAH12XHK ARCOAIRE · cold climate	20.2	12.0	10.6	12,000	215324116
D5FSDAH12XHK COMFORTMAKER · cold climate	20.2	12.0	10.6	12,000	215324189
D5FSDAH12XHK DAY & NIGHT · cold climate	20.2	12.0	10.6	12,000	215324262
D5FSDAH12XHK HEIL · cold climate	20.2	12.0	10.6	12,000	215324335
D5FSDAH12XHK KEEPRITE · cold climate	20.2	12.0	10.6	12,000	215324408
D5FSDAH12XHK KENMORE · cold climate	20.2	12.0	10.6	12,000	215324481
D5FSDAH12XHK MIDEA · cold climate	20.2	12.0	10.6	12,000	215324554
D5FSDAH12XHK TEMPSTAR · cold climate	20.2	12.0	10.6	12,000	215324627
D5FSDAH12XHK SMART COMFORT · cold climate	20.2	12.0	10.6	12,000	215324700
D5FSDAH12XHK LPS Legacy · cold climate	20.2	12.0	10.6	12,000	215324846
D5FSDAH12XHK AIRQUEST · cold climate	20.2	12.0	10.6	12,000	215324773
D5FSDAH12XHK Viessmann · cold climate	20.2	12.0	10.6	12,000	217178794

Yearly running cost in 10 large cities$222-$642

Phoenix, AZ$280/yr
Miami, FL$222/yr
Houston, TX$251/yr
Atlanta, GA$264/yr
Los Angeles, CA$259/yr
New York, NY$642/yr
Chicago, IL$523/yr
Denver, CO$437/yr
Seattle, WA$270/yr
Minneapolis, MN$541/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 D5CSHAH12AAK?: The Arcoaire D5CSHAH12AAK is rated at up to 25.5 SEER2 and 13.5 EER2 for cooling and up to 11.6 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 72 certified matchups SEER2 ranges from 20.0-25.5.
Is the Arcoaire D5CSHAH12AAK good for cold climates?: Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 12,000 BTU/h at 5°F with a COP of 2.00, so it is still 2.0 times as efficient as electric resistance heat at that temperature.
How much does the Arcoaire D5CSHAH12AAK cost to run per year?: At its rated efficiency it costs about $222-$642 a year in electricity in large U.S. cities, depending on climate and local rates - for example $280 in Phoenix and $541 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 D5CSHAH12AAK?: ENERGY STAR lists 72 certified combinations for this outdoor unit. The highest-rated ones use ARCOAIRE D5FSHAH12XAK, COMFORTMAKER D5FSHAH12XAK, DAY & NIGHT D5FSHAH12XAK.
What refrigerant does the Arcoaire D5CSHAH12AAK 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 $282/yrYou save $337/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 D5CSHAH12AAK

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: $282
Current system, per year: $619
You save per year: $337
Payback: 13.3 years
Net after 10 years: -$1,128

Cooling $166Heating $116Electricity used: 1,759 kWhSaved vs. a minimum-efficiency heat pump: $193

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

Mitsubishi Electric MUZ-GX12NLHZ · cold climate25.6 SEER2 · 10.0 HSPF2
Carrier 37MAHAQ12AA3 · cold climate25.5 SEER2 · 11.6 HSPF2
Mitsubishi Electric MUZ-GS12NAH · cold climate25.6 SEER2 · 10.0 HSPF2
MDV MOX330-12HFN10-M1X · cold climate25.5 SEER2 · 11.6 HSPF2
Mitsubishi Electric MUZ-GX12NL · cold climate25.6 SEER2 · 10.7 HSPF2
ACIQ ACIQ-12ZS-HP230C · cold climate25.5 SEER2 · 11.5 HSPF2
Mitsubishi Electric MUZ-GS12NA · cold climate25.6 SEER2 · 10.7 HSPF2
CanAir 4C25SCH12H21 · cold climate25.5 SEER2 · 11.5 HSPF2

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

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