What is the SEER2 rating of the Day & Night D5CUHAH60AAK?

The Day & Night D5CUHAH60AAK is rated at up to 17.5 SEER2 and 12.0 EER2 for cooling and up to 9.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 72 certified matchups SEER2 ranges from 15.2-17.5.

Is the Day & Night D5CUHAH60AAK good for cold climates?

Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 54,000 BTU/h at 5°F with a COP of 1.90, so it is still 1.9 times as efficient as electric resistance heat at that temperature.

How much does the Day & Night D5CUHAH60AAK cost to run per year?

At its rated efficiency it costs about $1,396-$3,725 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,720 in Phoenix and $3,112 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 Day & Night D5CUHAH60AAK?

ENERGY STAR lists 72 certified combinations for this outdoor unit. The highest-rated ones use D5FUHAH60XAK, D5FUAAH60XAK, D5FULAH60XMX.

4-ton central heat pump · D5F Series

Day & Night D5CUHAH60AAK

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

Ranks #135 of 319 4 ton central heat pumps for cooling efficiency, and costs about $1,559 a year to run in a mixed climate like Atlanta.

SEER2: 17.5 Cooling efficiency over a season
Average · beats 58%
HSPF2: 9.5 Heating efficiency over a season
Very good · beats 70%
EER2: 12.0 Cooling efficiency on a 95°F day
Average · beats 64%
Heat at 5°F: 54,000 BTU/h98% of its 47°F output
Below average · beats 20%

A good fit if…

Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 54,000 BTU/h at 5°F.
It will heat most of the year - its HSPF2 beats 70% of central heat pumps.
You want steady temperatures and quiet running - the compressor varies its speed.
You want a choice of indoor units - 72 certified pairings.

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	Day & Night
Also sold as	Heil, Smart Comfort, Midea, Arcoaire, Keeprite, Comfortmaker, Tempstar, Airquest, Viessmann, Kenmore, LPS Legacy, Grandaire
Outdoor unit model	D5CUHAH60AAK
Series	D5F Series
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	November 15, 2018
Last certified	September 22, 2026
Cooling
SEER2Seasonal efficiency, higher is better	17.5 (range 15.2-17.5)
EER2Efficiency at 95°F outdoors	10.0-12.0
Cooling capacity	47,000-54,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	8.1-9.5
Capacity at 47°F	55,000-58,000 BTU/h
Capacity at 17°F	36,000-45,000 BTU/h
Capacity at 5°F	43,000-54,000 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	1.80-1.90
ENERGY STAR cold climate	Yes

Heating output as it gets colder98% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with D5FUHAH60XAK 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.
D5FUHAH60XAK · cold climate	17.5	12.0	9.5	54,000	215318978
D5FUHAH60XAK · cold climate	17.5	12.0	9.5	54,000	215319118
D5FUHAH60XAK · cold climate	17.5	12.0	9.5	54,000	215319062
D5FUHAH60XAK · cold climate	17.5	12.0	9.5	54,000	215318894
D5FUHAH60XAK · cold climate	17.5	12.0	9.5	54,000	215319006
D5FUHAH60XAK · cold climate	17.5	12.0	9.5	54,000	215318922
D5FUHAH60XAK · cold climate	17.5	12.0	9.5	54,000	215319034
D5FUHAH60XAK · cold climate	17.5	12.0	9.5	54,000	215319090
D5FUHAH60XAK · cold climate	17.5	12.0	9.5	54,000	215319146
D5FUHAH60XAK · cold climate	17.5	12.0	9.5	54,000	215319174
D5FUHAH60XAK · cold climate	17.5	12.0	9.5	54,000	215319202
D5FUHAH60XAK · cold climate	17.5	12.0	9.5	54,000	215318950
D5FUHAH60XAK · cold climate	17.5	12.0	9.5	54,000	217178771
D5FUAAH60XAK · cold climate	16.0	10.0	9.0	52,000	215318949
D5FUAAH60XAK · cold climate	16.0	10.0	9.0	52,000	215319117
D5FUAAH60XAK · cold climate	16.0	10.0	9.0	52,000	215319061
D5FUAAH60XAK · cold climate	16.0	10.0	9.0	52,000	215318893
D5FUAAH60XAK · cold climate	16.0	10.0	9.0	52,000	215319005
D5FUAAH60XAK · cold climate	16.0	10.0	9.0	52,000	215318921
D5FUAAH60XAK · cold climate	16.0	10.0	9.0	52,000	215319033
D5FUAAH60XAK · cold climate	16.0	10.0	9.0	52,000	215319089
D5FUAAH60XAK · cold climate	16.0	10.0	9.0	52,000	215319145
D5FUAAH60XAK · cold climate	16.0	10.0	9.0	52,000	215319173
D5FUAAH60XAK · cold climate	16.0	10.0	9.0	52,000	215319201
D5FUAAH60XAK · cold climate	16.0	10.0	9.0	52,000	215318977
D5FUAAH60XAK · cold climate	16.0	10.0	9.0	52,000	217178770
D5FULAH60XMX · cold climate	16.0	10.0	8.5	45,000	217456588
D5FULAH60XMX · cold climate	16.0	10.0	8.5	45,000	217456504
D5FULAH60XMX · cold climate	16.0	10.0	8.5	45,000	217456532
D5FULAH60XMX · cold climate	16.0	10.0	8.5	45,000	217456448
D5FULAH60XMX · cold climate	16.0	10.0	8.5	45,000	217456672
D5FULAH60XMX · cold climate	16.0	10.0	8.5	45,000	217456756
D5FULAH60XMX · cold climate	16.0	10.0	8.5	45,000	217456616
D5FULAH60XMX · cold climate	16.0	10.0	8.5	45,000	217456700
D5FULAH60XMX · cold climate	16.0	10.0	8.5	45,000	217456782
D5FULAH60XMX · cold climate	16.0	10.0	8.5	45,000	217456476
D5FULAH60XMX · cold climate	16.0	10.0	8.5	45,000	217456644
D5FULAH60XMX · cold climate	16.0	10.0	8.5	45,000	217456560
D5FULAH60XMX · cold climate	16.0	10.0	8.5	45,000	217456728
D5FULBH60XMX · cold climate	16.0	10.0	8.5	45,000	218792526
D5FULBH60XMX · cold climate	16.0	10.0	8.5	45,000	218792512
D5FULBH60XMX · cold climate	16.0	10.0	8.5	45,000	218792498
D5FULBH60XMX · cold climate	16.0	10.0	8.5	45,000	218792484
D5FULBH60XMX · cold climate	16.0	10.0	8.5	45,000	218792470
D5FULBH60XMX · cold climate	16.0	10.0	8.5	45,000	218792456
D5FULBH60XMX · cold climate	16.0	10.0	8.5	45,000	218792442
D5FULBH60XMX · cold climate	16.0	10.0	8.5	45,000	218792428
D5FULBH60XMX · cold climate	16.0	10.0	8.5	45,000	218792414
D5FULBH60XMX · cold climate	16.0	10.0	8.5	45,000	218792400
D5FULAH60XDX · cold climate	15.2	10.0	8.1	43,000	217456589
D5FULAH60XDX · cold climate	15.2	10.0	8.1	43,000	217456505
D5FULAH60XDX · cold climate	15.2	10.0	8.1	43,000	217456729
D5FULAH60XDX · cold climate	15.2	10.0	8.1	43,000	217456533
D5FULAH60XDX · cold climate	15.2	10.0	8.1	43,000	217456449
D5FULAH60XDX · cold climate	15.2	10.0	8.1	43,000	217456673
D5FULAH60XDX · cold climate	15.2	10.0	8.1	43,000	217456757
D5FULAH60XDX · cold climate	15.2	10.0	8.1	43,000	217456617
D5FULAH60XDX · cold climate	15.2	10.0	8.1	43,000	217456701
D5FULAH60XDX · cold climate	15.2	10.0	8.1	43,000	217456783
D5FULAH60XDX · cold climate	15.2	10.0	8.1	43,000	217456477

Yearly running cost in 10 large cities$1,396-$3,725

Phoenix, AZ$1,720/yr
Miami, FL$1,396/yr
Houston, TX$1,542/yr
Atlanta, GA$1,559/yr
Los Angeles, CA$1,517/yr
New York, NY$3,725/yr
Chicago, IL$3,024/yr
Denver, CO$2,514/yr
Seattle, WA$1,545/yr
Minneapolis, MN$3,112/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 Day & Night D5CUHAH60AAK?: The Day & Night D5CUHAH60AAK is rated at up to 17.5 SEER2 and 12.0 EER2 for cooling and up to 9.5 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 72 certified matchups SEER2 ranges from 15.2-17.5.
Is the Day & Night D5CUHAH60AAK good for cold climates?: Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 54,000 BTU/h at 5°F with a COP of 1.90, so it is still 1.9 times as efficient as electric resistance heat at that temperature.
How much does the Day & Night D5CUHAH60AAK cost to run per year?: At its rated efficiency it costs about $1,396-$3,725 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,720 in Phoenix and $3,112 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 Day & Night D5CUHAH60AAK?: ENERGY STAR lists 72 certified combinations for this outdoor unit. The highest-rated ones use D5FUHAH60XAK, D5FUAAH60XAK, D5FULAH60XMX.
What refrigerant does the Day & Night D5CUHAH60AAK 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 $1,706/yrYou save $1,041/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 Day & Night D5CUHAH60AAK

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: $1,706
Current system, per year: $2,747
You save per year: $1,041
Payback: 18.7 years
Net after 10 years: -$9,095

Cooling $1,046Heating $660Electricity used: 10,663 kWhSaved vs. a minimum-efficiency heat pump: $410

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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Innovair SHV60H2BA · cold climate17.5 SEER2 · 9.5 HSPF2
Cooper&Hunter CH-PQ48-230VO · cold climate17.5 SEER2 · 9.5 HSPF2
KEEN Home KEENHYDHP48AA · cold climate17.5 SEER2 · 9.5 HSPF2
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Carrier 37MUHAQ48AA3 · cold climate17.5 SEER2 · 9.5 HSPF2

See all 319 4 ton central heat pumps, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of September 22, 2026. How we use the data.