What is the SEER2 rating of the Tempstar D5CUHAH18AAK+KSAIC0701230?

The Tempstar D5CUHAH18AAK+KSAIC0701230 is rated at up to 16.5 SEER2 and 10.5 EER2 for cooling and up to 9.0 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 506 certified matchups SEER2 ranges from 15.2-16.5.

Is the Tempstar D5CUHAH18AAK+KSAIC0701230 good for cold climates?

Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 17,600 BTU/h at 5°F with a COP of 2.04, so it is still 2.0 times as efficient as electric resistance heat at that temperature.

How much does the Tempstar D5CUHAH18AAK+KSAIC0701230 cost to run per year?

At its rated efficiency it costs about $513-$1,375 a year in electricity in large U.S. cities, depending on climate and local rates - for example $633 in Phoenix and $1,149 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 Tempstar D5CUHAH18AAK+KSAIC0701230?

ENERGY STAR lists 506 certified combinations for this outdoor unit. The highest-rated ones use FMA5X18**AL, FMA5X24**AL, FM(C,U)5Z30**AL.

1.5-ton central heat pump · Crossover Heat Pump

Tempstar D5CUHAH18AAK+KSAIC0701230

Average cooling and heating efficiency for a 1.5-ton central heat pump, and certified for cold climates.

Ranks #86 of 170 1.5 ton central heat pumps for cooling efficiency, and costs about $575 a year to run in a mixed climate like Atlanta.

SEER2: 16.5 Cooling efficiency over a season
Average · beats 40%
HSPF2: 9.0 Heating efficiency over a season
Average · beats 54%
EER2: 10.5 Cooling efficiency on a 95°F day
Below average · beats 17%
Heat at 5°F: 17,600 BTU/h85% of its 47°F output
Average · beats 48%

A good fit if…

Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 17,600 BTU/h at 5°F.
You want steady temperatures and quiet running - the compressor varies its speed.
You want a choice of indoor units - 506 certified pairings.

Think twice if…

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

Calculate my running cost

Details

Specifications1.5 ton, R-454B

General
Brand	Tempstar
Also sold as	Keeprite, Day & Night, Comfortmaker, Arcoaire, Airquest, Heil, Smart Comfort, Viessmann
Outdoor unit model	D5CUHAH18AAK+KSAIC0701230
Series	Crossover Heat Pump
Type	Central heat pump
Nominal size	1.5 ton
CompressorVariable-speed units run longer at low power	Continuously variable
Refrigerant	R-454B
Connected (smart) capable	No
On the market since	May 6, 2025
Last certified	July 17, 2026
Cooling
SEER2Seasonal efficiency, higher is better	16.5 (range 15.2-16.5)
EER2Efficiency at 95°F outdoors	10.0-11.0
Cooling capacity	17,400-18,700 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	8.1-9.0
Capacity at 47°F	18,900-20,200 BTU/h
Capacity at 17°F	14,400-15,300 BTU/h
Capacity at 5°F	16,300-17,600 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	1.85-2.04
ENERGY STAR cold climate	Yes

Heating output as it gets colder85% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with FMA5X18**AL at the standard test temperatures, in BTU/h:

Certified matchups506 indoor units

The same outdoor unit scores differently with each indoor unit and furnace. The 60 highest-rated of 506 are shown. Ask your installer for the AHRI reference number of the exact system you are quoted.

Indoor unit	Furnace	SEER2	EER2	HSPF2	Heat @5°F	AHRI ref.
FMA5X18**AL · cold climate	-	16.5	10.5	8.5	16,800	218483198
FMA5X18**AL · cold climate	-	16.5	10.5	8.5	16,800	218483197
FMA5X18**AL · cold climate	-	16.5	10.5	8.5	16,800	218483196
FMA5X18**AL · cold climate	-	16.5	10.5	8.5	16,800	218483195
FMA5X18**AL · cold climate	-	16.5	10.5	8.5	16,800	218483194
FMA5X18**AL · cold climate	-	16.5	10.5	8.5	16,800	218483193
FMA5X18**AL · cold climate	-	16.5	10.5	8.5	16,800	218483192
FMA5X24**AL · cold climate	-	16.5	10.5	8.5	16,800	218483191
FMA5X24**AL · cold climate	-	16.5	10.5	8.5	16,800	218483190
FMA5X24**AL · cold climate	-	16.5	10.5	8.5	16,800	218483189
FMA5X24**AL · cold climate	-	16.5	10.5	8.5	16,800	218483188
FMA5X24**AL · cold climate	-	16.5	10.5	8.5	16,800	218483187
FMA5X24**AL · cold climate	-	16.5	10.5	8.5	16,800	218483186
FMA5X24**AL · cold climate	-	16.5	10.5	8.5	16,800	218483185
FMA5X18**AL · cold climate	-	16.5	10.5	8.5	16,800	218484626
FMA5X24**AL · cold climate	-	16.5	10.5	8.5	16,800	218484625
FMA5X18**AL · cold climate	-	16.5	10.5	8.5	16,800	218680562
FMA5X24**AL · cold climate	-	16.5	10.5	8.5	16,800	218680561
FM(C,U)5Z30**AL · cold climate	-	16.0	11.0	9.0	16,800	218483205
FM(C,U)5Z30**AL · cold climate	-	16.0	11.0	9.0	16,800	218483204
FM(C,U)5Z30**AL · cold climate	-	16.0	11.0	9.0	16,800	218483203
FM(C,U)5Z30**AL · cold climate	-	16.0	11.0	9.0	16,800	218483202
FM(C,U)5Z30**AL · cold climate	-	16.0	11.0	9.0	16,800	218483201
FM(C,U)5Z30**AL · cold climate	-	16.0	11.0	9.0	16,800	218483200
FM(C,U)5Z30**AL · cold climate	-	16.0	11.0	9.0	16,800	218483199
FM(C,U)5Z30**AL · cold climate	-	16.0	11.0	9.0	16,800	218680563
FTMA5X24L0B · cold climate	-	16.0	11.0	8.5	17,400	218475391
FTMA5X24L0B · cold climate	-	16.0	11.0	8.5	17,400	218475390
FTMA5X24L0B · cold climate	-	16.0	11.0	8.5	17,400	218475389
FTMA5X24L0B · cold climate	-	16.0	11.0	8.5	17,400	218475388
FTMA5X24L0B · cold climate	-	16.0	11.0	8.5	17,400	218475387
FTMA5X24L0B · cold climate	-	16.0	11.0	8.5	17,400	218475386
FTMA5X24L0B · cold climate	-	16.0	11.0	8.5	17,400	218475385
FTMA5X24L0B · cold climate	-	16.0	11.0	8.5	17,400	218680170
FM(C,U)5Z18**AL · cold climate	-	15.5	10.5	9.0	17,100	218483219
FM(C,U)5Z18**AL · cold climate	-	15.5	10.5	9.0	17,100	218483218
FM(C,U)5Z18**AL · cold climate	-	15.5	10.5	9.0	17,100	218483217
FM(C,U)5Z18**AL · cold climate	-	15.5	10.5	9.0	17,100	218483216
FM(C,U)5Z18**AL · cold climate	-	15.5	10.5	9.0	17,100	218483215
FM(C,U)5Z18**AL · cold climate	-	15.5	10.5	9.0	17,100	218483214
FM(C,U)5Z18**AL · cold climate	-	15.5	10.5	9.0	17,100	218483213
FM(C,U)5Z24**AL · cold climate	-	15.5	10.5	9.0	17,100	218483212
FM(C,U)5Z24**AL · cold climate	-	15.5	10.5	9.0	17,100	218483211
FM(C,U)5Z24**AL · cold climate	-	15.5	10.5	9.0	17,100	218483210
FM(C,U)5Z24**AL · cold climate	-	15.5	10.5	9.0	17,100	218483209
FM(C,U)5Z24**AL · cold climate	-	15.5	10.5	9.0	17,100	218483208
FM(C,U)5Z24**AL · cold climate	-	15.5	10.5	9.0	17,100	218483207
FM(C,U)5Z24**AL · cold climate	-	15.5	10.5	9.0	17,100	218483206
FM(C,U)5Z18**AL · cold climate	-	15.5	10.5	9.0	17,100	218680565
FM(C,U)5Z24**AL · cold climate	-	15.5	10.5	9.0	17,100	218680564
EA*5X19M17A · cold climate	80MS(N,L)0701412A	15.5	10.5	8.5	16,500	218484407
EA*5X19M17A · cold climate	80MS(N,L)0701412A	15.5	10.5	8.5	16,500	218484406
EA*5X19M17A · cold climate	80MS(N,L)0451412A	15.5	10.5	8.5	16,400	218484405
EA*5X19M17A · cold climate	80MS(N,L)0451412A	15.5	10.5	8.5	16,400	218484404
EA*5X19M17A · cold climate	80MS(N,L)0451412A	15.5	10.5	8.5	16,400	218484403
EA*5X19M17A · cold climate	80MS(N,L)0451412A	15.5	10.5	8.5	16,400	218484402
EA*5X19M17A · cold climate	80MS(N,L)0451412A	15.5	10.5	8.5	16,400	218484401
EA*5X25M17A · cold climate	OLV098A12*	15.5	10.5	8.5	17,500	218484096
EA*5X25M17A · cold climate	OLV098A12*	15.5	10.5	8.5	17,500	218484095
EA*5X25M17A · cold climate	OLV098A12*	15.5	10.5	8.5	17,500	218484094

Yearly running cost in 10 large cities$513-$1,375

Phoenix, AZ$633/yr
Miami, FL$513/yr
Houston, TX$567/yr
Atlanta, GA$575/yr
Los Angeles, CA$559/yr
New York, NY$1,375/yr
Chicago, IL$1,116/yr
Denver, CO$928/yr
Seattle, WA$571/yr
Minneapolis, MN$1,149/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 Tempstar D5CUHAH18AAK+KSAIC0701230?: The Tempstar D5CUHAH18AAK+KSAIC0701230 is rated at up to 16.5 SEER2 and 10.5 EER2 for cooling and up to 9.0 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 506 certified matchups SEER2 ranges from 15.2-16.5.
Is the Tempstar D5CUHAH18AAK+KSAIC0701230 good for cold climates?: Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 17,600 BTU/h at 5°F with a COP of 2.04, so it is still 2.0 times as efficient as electric resistance heat at that temperature.
How much does the Tempstar D5CUHAH18AAK+KSAIC0701230 cost to run per year?: At its rated efficiency it costs about $513-$1,375 a year in electricity in large U.S. cities, depending on climate and local rates - for example $633 in Phoenix and $1,149 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 Tempstar D5CUHAH18AAK+KSAIC0701230?: ENERGY STAR lists 506 certified combinations for this outdoor unit. The highest-rated ones use FMA5X18**AL, FMA5X24**AL, FM(C,U)5Z30**AL.
What refrigerant does the Tempstar D5CUHAH18AAK+KSAIC0701230 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 $628/yrYou save $326/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 Tempstar D5CUHAH18AAK+KSAIC0701230

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: $628
Current system, per year: $954
You save per year: $326
Payback: 21.4 years
Net after 10 years: -$3,736

Cooling $384Heating $244Electricity used: 3,924 kWhSaved vs. a minimum-efficiency heat pump: $108

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 1.5 ton models

Bryant 37MUHAQ18AA3+KSAIC0701230 · cold climate16.5 SEER2 · 9.0 HSPF2
Innovair SEV18H2R1916.5 SEER2 · 8.6 HSPF2
MRCOOL MVP-18-HP-C-230-2516.6 SEER2 · 10.2 HSPF2
MDV MOX330U-18HFN1-MR016.5 SEER2 · 8.6 HSPF2
MRCOOL MHP17018A-**A16.8 SEER2 · 8.1 HSPF2
Daikin DH6VSA181MA16.5 SEER2 · 8.5 HSPF2
Century HRG1**8S1R-**A16.8 SEER2 · 8.1 HSPF2
AC Pro BH714S18P-**A16.5 SEER2 · 7.8 HSPF2

See all 170 1.5 ton central heat pumps, ranked

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