What is the SEER2 rating of the Daikin DH5SEA4210A?

The Daikin DH5SEA4210A is rated at up to 15.2 SEER2 and 12.5 EER2 for cooling and up to 7.8 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.

Is the Daikin DH5SEA4210A good for cold climates?

It is not cold-climate certified: none of its matchups meet the ENERGY STAR cold-climate criteria (a COP of at least 1.75 at 5°F among other limits). In places with frequent sub-zero nights, pick a cold-climate 3.5-ton model.

How much does the Daikin DH5SEA4210A cost to run per year?

At its rated efficiency it costs about $1,250-$3,227 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,525 in Phoenix and $2,684 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.

Is the Daikin DH5SEA4210A the same as the Goodman GLZS5BA4210A?

Yes, as far as the certified ratings go. ENERGY STAR lists 3 model numbers with identical efficiency, capacity and matchups, which means the same outdoor unit sold under a different brand or with a minor variant code (voltage, colour or region). The full list is on this page.

Which indoor units work with the Daikin DH5SEA4210A?

ENERGY STAR lists 2 certified combinations for this outdoor unit. The highest-rated ones use AMST42CU1300A, AMST42CU1300B.

3.5-ton central heat pump · DH5SE

Daikin DH5SEA4210A

Below average cooling and heating efficiency for a 3.5-ton central heat pump, but not rated for cold climates.

Ranks #126 of 138 3.5 ton central heat pumps for cooling efficiency, and costs about $1,361 a year to run in a mixed climate like Atlanta.

SEER2: 15.2 Cooling efficiency over a season
Below average · beats 6%
HSPF2: 7.8 Heating efficiency over a season
Below average · beats 5%
EER2: 12.5 Cooling efficiency on a 95°F day
Very good · beats 80%
Heat at 5°F: 20,000 BTU/h51% of its 47°F output
Below average · beats 12%

A good fit if…

You want a certified 3.5-ton central heat pump at a typical efficiency level.

Think twice if…

You often see nights below 0°F - it is not cold-climate certified.
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.
Comfort and noise matter - a single-stage compressor runs only full-on or off.

Calculate my running cost

Details

Specifications3.5 ton, R-32

General
Brand	Daikin
Also sold as	Goodman, Amana
Outdoor unit model	DH5SEA4210A
Series	DH5SE
Type	Central heat pump
Nominal size	3.5 ton
CompressorVariable-speed units run longer at low power	Single stage
Refrigerant	R-32
Connected (smart) capable	No
On the market since	January 23, 2025
Last certified	June 26, 2026
Cooling
SEER2Seasonal efficiency, higher is better	15.2 (range 15.2)
EER2Efficiency at 95°F outdoors	12.5
Cooling capacity	40,500 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	7.8
Capacity at 47°F	39,500 BTU/h
Capacity at 17°F	24,000 BTU/h
Capacity at 5°F	20,000 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	1.85
ENERGY STAR cold climate	No

Heating output as it gets colder51% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with AMST42CU1300A at the standard test temperatures, in BTU/h:

Certified matchups2 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.
AMST42CU1300A	15.2	12.5	7.8	20,000	215381168
AMST42CU1300B	15.2	12.5	7.8	20,000	218222716

Same unit, other model numbers2

These model numbers have exactly the same certified ratings and matchups as the Daikin DH5SEA4210A: the same equipment under another brand, or a variant code for voltage, colour or market. Everything on this page applies to them.

Goodman GLZS5BA4210A
Amana ALZS5BA4210A

Yearly running cost in 10 large cities$1,250-$3,227

Phoenix, AZ$1,525/yr
Miami, FL$1,250/yr
Houston, TX$1,366/yr
Atlanta, GA$1,361/yr
Los Angeles, CA$1,320/yr
New York, NY$3,227/yr
Chicago, IL$2,615/yr
Denver, CO$2,170/yr
Seattle, WA$1,330/yr
Minneapolis, MN$2,684/yr

At each state's average electricity price and the city's typical heating and cooling hours.

Questions6

What is the SEER2 rating of the Daikin DH5SEA4210A?: The Daikin DH5SEA4210A is rated at up to 15.2 SEER2 and 12.5 EER2 for cooling and up to 7.8 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.
Is the Daikin DH5SEA4210A good for cold climates?: It is not cold-climate certified: none of its matchups meet the ENERGY STAR cold-climate criteria (a COP of at least 1.75 at 5°F among other limits). In places with frequent sub-zero nights, pick a cold-climate 3.5-ton model.
How much does the Daikin DH5SEA4210A cost to run per year?: At its rated efficiency it costs about $1,250-$3,227 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,525 in Phoenix and $2,684 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
Is the Daikin DH5SEA4210A the same as the Goodman GLZS5BA4210A?: Yes, as far as the certified ratings go. ENERGY STAR lists 3 model numbers with identical efficiency, capacity and matchups, which means the same outdoor unit sold under a different brand or with a minor variant code (voltage, colour or region). The full list is on this page.
Which indoor units work with the Daikin DH5SEA4210A?: ENERGY STAR lists 2 certified combinations for this outdoor unit. The highest-rated ones use AMST42CU1300A, AMST42CU1300B.
What refrigerant does the Daikin DH5SEA4210A use?: It uses R-32.

Running cost and savings

Pre-filled with this model. Pick your city and what you heat with today; everything else is optional.

Heat pump $1,505/yrYou save $567/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 Daikin DH5SEA4210A

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: $1,505
Current system, per year: $2,072
You save per year: $567
Payback: 26.5 years
Net after 10 years: -$9,332

Cooling $938Heating $567Electricity used: 9,407 kWhSaved vs. a minimum-efficiency heat pump: $82

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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Friedrich FRP14AY42AJ2N15.2 SEER2 · 7.8 HSPF2
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See all 138 3.5 ton central heat pumps, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of June 26, 2026. How we use the data.