What is the SEER2 rating of the Arcoaire N5H9V48*K*AAA?

The Arcoaire N5H9V48*K*AAA is rated at up to 19.0 SEER2 and 12.5 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 4041 certified matchups SEER2 ranges from 15.2-19.0.

Is the Arcoaire N5H9V48*K*AAA good for cold climates?

Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 41,500 BTU/h at 5°F with a COP of 2.32, so it is still 2.3 times as efficient as electric resistance heat at that temperature.

How much does the Arcoaire N5H9V48*K*AAA cost to run per year?

At its rated efficiency it costs about $1,163-$3,149 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,439 in Phoenix and $2,635 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 N5H9V48*K*AAA?

ENERGY STAR lists 4041 certified combinations for this outdoor unit. The highest-rated ones use FTMA5B60L0D, QFVA5D6021X, QFVA5D4821X.

4-ton central heat pump · Performance 19 SEER2 VS HP

Arcoaire N5H9V48KAAA

Very good cooling and heating efficiency for a 4-ton central heat pump, and certified for cold climates.

Ranks #37 of 319 4 ton central heat pumps for cooling efficiency, and costs about $1,313 a year to run in a mixed climate like Atlanta.

SEER2: 19.0 Cooling efficiency over a season
Very good · beats 85%
HSPF2: 10.0 Heating efficiency over a season
Very good · beats 84%
EER2: 12.5 Cooling efficiency on a 95°F day
Very good · beats 80%
Heat at 5°F: 41,500 BTU/h75% of its 47°F output
Excellent · beats 90%

A good fit if…

You want low cooling bills - its SEER2 beats 85% of central heat pumps.
Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 41,500 BTU/h at 5°F.
It will heat most of the year - its HSPF2 beats 84% of central heat pumps.
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

Specifications4 ton, R-454B

General
Brand	Arcoaire
Also sold as	Airquest, Comfortmaker, Day & Night, Heil, Tempstar, Keeprite, ACIQ
Outdoor unit model	N5H9V48KAAA
Series	Performance 19 SEER2 VS HP
Type	Central heat pump
Nominal size	4 ton
CompressorVariable-speed units run longer at low power	Continuously variable
Refrigerant	R-454B
Connected (smart) capable	No
On the market since	January 14, 2025
Last certified	October 7, 2026
Cooling
SEER2Seasonal efficiency, higher is better	19.0 (range 15.2-19.0)
EER2Efficiency at 95°F outdoors	10.0-13.5
Cooling capacity	43,500-49,500 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	8.5-10.0
Capacity at 47°F	46,500-55,000 BTU/h
Capacity at 17°F	38,500-47,000 BTU/h
Capacity at 5°F	36,000-41,500 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	1.95-2.32
ENERGY STAR cold climate	Yes

Heating output as it gets colder75% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with FTMA5B60L0D at the standard test temperatures, in BTU/h:

Certified matchups4,041 indoor units

The same outdoor unit scores differently with each indoor unit and furnace. The 60 highest-rated of 4,041 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.
FTMA5B60L0D · cold climate	-	19.0	12.5	10.0	36,000	217914940
FTMA5B60L0D · cold climate	-	19.0	12.5	10.0	36,000	217914939
FTMA5B60L0D · cold climate	-	19.0	12.5	10.0	36,000	217914942
FTMA5B60L0D · cold climate	-	19.0	12.5	10.0	36,000	217914941
FTMA5B60L0D · cold climate	-	19.0	12.5	10.0	36,000	217914943
FTMA5B60L0D · cold climate	-	19.0	12.5	10.0	36,000	217914944
FTMA5B60L0D · cold climate	-	19.0	12.5	10.0	36,000	217914945
FTMA5B60L0D · cold climate	-	19.0	12.5	10.0	36,000	218020919
QFVA5D6021X · cold climate	-	19.0	13.5	10.0	38,500	218695567
QFVA5D6021X · cold climate	-	19.0	13.5	10.0	38,500	218695565
QFVA5D6021X · cold climate	-	19.0	13.5	10.0	38,500	218695563
QFVA5D6021X · cold climate	-	19.0	13.5	10.0	38,500	218695561
QFVA5D6021X · cold climate	-	19.0	13.5	10.0	38,500	218695559
QFVA5D6021X · cold climate	-	19.0	13.5	10.0	38,500	218695557
QFVA5D6021X · cold climate	-	19.0	13.5	10.0	38,500	218695555
QFVA5D6021X · cold climate	-	19.0	13.5	10.0	38,500	218822097
QFVA5D4821X · cold climate	-	19.0	13.0	9.5	38,500	218695551
QFVA5D4821X · cold climate	-	19.0	13.0	9.5	38,500	218695549
QFVA5D4821X · cold climate	-	19.0	13.0	9.5	38,500	218695547
QFVA5D4821X · cold climate	-	19.0	13.0	9.5	38,500	218695545
QFVA5D4821X · cold climate	-	19.0	13.0	9.5	38,500	218695543
QFVA5D4821X · cold climate	-	19.0	13.0	9.5	38,500	218695541
QFVA5D4821X · cold climate	-	19.0	13.0	9.5	38,500	218695539
QFVA5D4821X · cold climate	-	19.0	13.0	9.5	38,500	218822096
FTMA5B48L0C · cold climate	-	18.0	12.0	9.0	36,400	217914923
FTMA5B48L0C · cold climate	-	18.0	12.0	9.0	36,400	217914924
FTMA5B48L0C · cold climate	-	18.0	12.0	9.0	36,400	217914925
FTMA5B48L0C · cold climate	-	18.0	12.0	9.0	36,400	217914926
FTMA5B48L0C · cold climate	-	18.0	12.0	9.0	36,400	217914928
FTMA5B48L0C · cold climate	-	18.0	12.0	9.0	36,400	217914927
FTMA5B48L0C · cold climate	-	18.0	12.0	9.0	36,400	217914929
FTMA5B48L0C · cold climate	-	18.0	12.0	9.0	36,400	218020917
EA*5X61M21A · cold climate	80MSU0802120A	17.5	11.5	9.0	36,800	217929537
EA*5X61M21A · cold climate	80MSU0802120A	17.5	11.5	9.0	36,800	217929538
EA*5X61M21A · cold climate	80MSU0802120A	17.5	11.5	9.0	36,800	217929540
EA*5X61M21A · cold climate	80MSU0802120A	17.5	11.5	9.0	36,800	217929539
EA*5X61M21A · cold climate	80MSU0802120A	17.5	11.5	9.0	36,800	217929542
EA*5X61M21A · cold climate	80MSU0802120A	17.5	11.5	9.0	36,800	217929541
EA*5X61M21A · cold climate	80MSU0802120A	17.5	11.5	9.0	36,800	217929536
EA*5X61M21A · cold climate	80MSU0802120A	17.5	11.5	9.0	36,800	218016547
EVM5X60M21A · cold climate	97VTN1002122A	17.0	12.0	9.5	40,000	217916207
EVM5X60M21A · cold climate	97VTN1002122A	17.0	12.0	9.5	40,000	217916209
EVM5X60M21A · cold climate	97VTN1002122A	17.0	12.0	9.5	40,000	217916208
EVM5X60M21A · cold climate	96VTN1002122B	17.0	12.0	9.5	40,000	217916164
EVM5X60M21A · cold climate	96VTN1002122B	17.0	12.0	9.5	40,000	217916165
EVM5X60M21A · cold climate	96VTN1002122B	17.0	12.0	9.5	40,000	217916166
EVM5X60M21A · cold climate	96VTN1002122B	17.0	12.0	9.5	40,000	217916167
EVM5X60M21A · cold climate	96VTN1002122B	17.0	12.0	9.5	40,000	217916168
EVM5X60M21A · cold climate	96VTN1002122B	17.0	12.0	9.5	40,000	217916169
EVM5X60M21A · cold climate	96VTN1002122B	17.0	12.0	9.5	40,000	217916170
EVM5X60M21A · cold climate	97VTN1002122A	17.0	12.0	9.5	40,000	217916203
EVM5X60M21A · cold climate	97VTN1002122A	17.0	12.0	9.5	40,000	217916205
EVM5X60M21A · cold climate	97VTN1002122A	17.0	12.0	9.5	40,000	217916206
EVM5X60M21A · cold climate	97VTN1002122A	17.0	12.0	9.5	40,000	217916204
EVD5X60M21A · cold climate	96VTN1002122B	17.0	12.0	9.5	40,000	217917325
EVD5X60M21A · cold climate	96VTN1002122B	17.0	12.0	9.5	40,000	217917326
EVD5X60M21A · cold climate	96VTN1002122B	17.0	12.0	9.5	40,000	217917327
EVD5X60M21A · cold climate	96VTN1002122B	17.0	12.0	9.5	40,000	217917329
EVD5X60M21A · cold climate	96VTN1002122B	17.0	12.0	9.5	40,000	217917328
EVD5X60M21A · cold climate	96VTN1002122B	17.0	12.0	9.5	40,000	217917331

Yearly running cost in 10 large cities$1,163-$3,149

Phoenix, AZ$1,439/yr
Miami, FL$1,163/yr
Houston, TX$1,290/yr
Atlanta, GA$1,313/yr
Los Angeles, CA$1,280/yr
New York, NY$3,149/yr
Chicago, IL$2,558/yr
Denver, CO$2,128/yr
Seattle, WA$1,309/yr
Minneapolis, MN$2,635/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 N5H9V48*K*AAA?: The Arcoaire N5H9V48*K*AAA is rated at up to 19.0 SEER2 and 12.5 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 4041 certified matchups SEER2 ranges from 15.2-19.0.
Is the Arcoaire N5H9V48*K*AAA good for cold climates?: Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 41,500 BTU/h at 5°F with a COP of 2.32, so it is still 2.3 times as efficient as electric resistance heat at that temperature.
How much does the Arcoaire N5H9V48*K*AAA cost to run per year?: At its rated efficiency it costs about $1,163-$3,149 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,439 in Phoenix and $2,635 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 N5H9V48*K*AAA?: ENERGY STAR lists 4041 certified combinations for this outdoor unit. The highest-rated ones use FTMA5B60L0D, QFVA5D6021X, QFVA5D4821X.
What refrigerant does the Arcoaire N5H9V48*K*AAA 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 $1,431/yrYou save $1,042/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 N5H9V48*K*AAA

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: $1,431
Current system, per year: $2,473
You save per year: $1,042
Payback: 16.8 years
Net after 10 years: -$7,082

Cooling $871Heating $560Electricity used: 8,942 kWhSaved vs. a minimum-efficiency heat pump: $473

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.

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1HVAC ACIQ-48-HP32 · cold climate19.0 SEER2 · 10.0 HSPF2
Carrier 27VPA948A*030 · cold climate19.0 SEER2 · 10.0 HSPF2
TOSOT TU60W-EDU · cold climate19.0 SEER2 · 10.5 HSPF2
Friedrich FRP19AY48AJVC19.0 SEER2 · 10.0 HSPF2
TOSOT TU60-R32WEDU · cold climate19.0 SEER2 · 10.5 HSPF2
Fujitsu FOP1948MJAYCA19.0 SEER2 · 10.0 HSPF2

See all 319 4 ton central heat pumps, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of October 7, 2026. How we use the data.