What is the SEER2 rating of the Day & Night D5CURAH60AAK?

The Day & Night D5CURAH60AAK is rated at up to 15.2 SEER2 and 8.7 EER2 for cooling and up to 8.4 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.

Is the Day & Night D5CURAH60AAK good for cold climates?

Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 38,000 BTU/h at 5°F with a COP of 1.80, so it is still 1.8 times as efficient as electric resistance heat at that temperature.

How much does the Day & Night D5CURAH60AAK cost to run per year?

At its rated efficiency it costs about $1,665-$4,138 a year in electricity in large U.S. cities, depending on climate and local rates - for example $2,009 in Phoenix and $3,424 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 D5CURAH60AAK?

ENERGY STAR lists 13 certified combinations for this outdoor unit. The highest-rated one uses D5FUAAH60XAK.

4-ton central heat pump · D5F Series

Day & Night D5CURAH60AAK

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

Ranks #298 of 319 4 ton central heat pumps for cooling efficiency, and costs about $1,762 a year to run in a mixed climate like Atlanta.

SEER2: 15.2 Cooling efficiency over a season
Below average · beats 6%
HSPF2: 8.4 Heating efficiency over a season
Below average · beats 31%
EER2: 8.7 Cooling efficiency on a 95°F day
Below average · beats 2%
Heat at 5°F: 38,000 BTU/h70% of its 47°F output
Below average · beats 5%

A good fit if…

Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 38,000 BTU/h at 5°F.
You want steady temperatures and quiet running - the compressor varies its speed.
You want a choice of indoor units - 13 certified pairings.

Think twice if…

Cooling cost matters most - its SEER2 is below average for central heat pumps.
You mainly need heat - its HSPF2 is below average for central heat pumps.

Calculate my running cost

Details

Specifications4 ton, R-454B

General
Brand	Day & Night
Also sold as	Midea, Arcoaire, Heil, Comfortmaker, Airquest, LPS Legacy, Grandaire, Keeprite, Kenmore, Tempstar, Smart Comfort, Viessmann
Outdoor unit model	D5CURAH60AAK
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	May 1, 2026
Cooling
SEER2Seasonal efficiency, higher is better	15.2 (range 15.2)
EER2Efficiency at 95°F outdoors	8.7
Cooling capacity	54,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	8.4
Capacity at 47°F	54,000 BTU/h
Capacity at 17°F	36,000 BTU/h
Capacity at 5°F	38,000 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	1.80
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 D5FUAAH60XAK at the standard test temperatures, in BTU/h:

Certified matchups13 indoor units

The same outdoor unit scores differently with each indoor unit. 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.
D5FUAAH60XAK · cold climate	15.2	8.7	8.4	38,000	215318956
D5FUAAH60XAK · cold climate	15.2	8.7	8.4	38,000	215319068
D5FUAAH60XAK · cold climate	15.2	8.7	8.4	38,000	215318900
D5FUAAH60XAK · cold climate	15.2	8.7	8.4	38,000	215318984
D5FUAAH60XAK · cold climate	15.2	8.7	8.4	38,000	215318928
D5FUAAH60XAK · cold climate	15.2	8.7	8.4	38,000	215319152
D5FUAAH60XAK · cold climate	15.2	8.7	8.4	38,000	215319180
D5FUAAH60XAK · cold climate	15.2	8.7	8.4	38,000	215319208
D5FUAAH60XAK · cold climate	15.2	8.7	8.4	38,000	215319012
D5FUAAH60XAK · cold climate	15.2	8.7	8.4	38,000	215319040
D5FUAAH60XAK · cold climate	15.2	8.7	8.4	38,000	215319096
D5FUAAH60XAK · cold climate	15.2	8.7	8.4	38,000	215319124
D5FUAAH60XAK · cold climate	15.2	8.7	8.4	38,000	217178780

Yearly running cost in 10 large cities$1,665-$4,138

Phoenix, AZ$2,009/yr
Miami, FL$1,665/yr
Houston, TX$1,799/yr
Atlanta, GA$1,762/yr
Los Angeles, CA$1,701/yr
New York, NY$4,138/yr
Chicago, IL$3,346/yr
Denver, CO$2,770/yr
Seattle, WA$1,694/yr
Minneapolis, MN$3,424/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 D5CURAH60AAK?: The Day & Night D5CURAH60AAK is rated at up to 15.2 SEER2 and 8.7 EER2 for cooling and up to 8.4 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.
Is the Day & Night D5CURAH60AAK good for cold climates?: Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 38,000 BTU/h at 5°F with a COP of 1.80, so it is still 1.8 times as efficient as electric resistance heat at that temperature.
How much does the Day & Night D5CURAH60AAK cost to run per year?: At its rated efficiency it costs about $1,665-$4,138 a year in electricity in large U.S. cities, depending on climate and local rates - for example $2,009 in Phoenix and $3,424 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 D5CURAH60AAK?: ENERGY STAR lists 13 certified combinations for this outdoor unit. The highest-rated one uses D5FUAAH60XAK.
What refrigerant does the Day & Night D5CURAH60AAK 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 $1,971/yrYou save $814/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 D5CURAH60AAK

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: $1,971
Current system, per year: $2,784
You save per year: $814
Payback: 25.2 years
Net after 10 years: -$12,362

Cooling $1,251Heating $720Electricity used: 12,316 kWhSaved vs. a minimum-efficiency heat pump: $165

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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See all 319 4 ton central heat pumps, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of May 1, 2026. How we use the data.