What is the SEER2 rating of the ApooDr AHU3G-50HFN-B?

The ApooDr AHU3G-50HFN-B 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.

Is the ApooDr AHU3G-50HFN-B 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 ApooDr AHU3G-50HFN-B cost to run per year?

At its rated efficiency it costs about $1,447-$3,699 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,761 in Phoenix and $3,072 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 ApooDr AHU3G-50HFN-B?

ENERGY STAR lists 1 certified combination for this outdoor unit. The highest-rated one uses AHU3G-50HFN-A.

4-ton central heat pump · AHU Series

ApooDr AHU3G-50HFN-B

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

Ranks #124 of 319 4 ton central heat pumps for cooling efficiency, and costs about $1,564 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.

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	ApooDr
Outdoor unit model	AHU3G-50HFN-B
Series	AHU 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	January 1, 2025
Last certified	July 22, 2025
Cooling
SEER2Seasonal efficiency, higher is better	17.5 (range 17.5)
EER2Efficiency at 95°F outdoors	12.0
Cooling capacity	54,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	9.5
Capacity at 47°F	55,000 BTU/h
Capacity at 17°F	35,000 BTU/h
Capacity at 5°F	54,000 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	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 AHU3G-50HFN-A at the standard test temperatures, in BTU/h:

Certified matchups1 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.
AHU3G-50HFN-A · cold climate	17.5	12.0	9.5	54,000	217563477

Yearly running cost in 10 large cities$1,447-$3,699

Phoenix, AZ$1,761/yr
Miami, FL$1,447/yr
Houston, TX$1,577/yr
Atlanta, GA$1,564/yr
Los Angeles, CA$1,515/yr
New York, NY$3,699/yr
Chicago, IL$2,996/yr
Denver, CO$2,485/yr
Seattle, WA$1,522/yr
Minneapolis, MN$3,072/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 ApooDr AHU3G-50HFN-B?: The ApooDr AHU3G-50HFN-B 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.
Is the ApooDr AHU3G-50HFN-B 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 ApooDr AHU3G-50HFN-B cost to run per year?: At its rated efficiency it costs about $1,447-$3,699 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,761 in Phoenix and $3,072 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 ApooDr AHU3G-50HFN-B?: ENERGY STAR lists 1 certified combination for this outdoor unit. The highest-rated one uses AHU3G-50HFN-A.
What refrigerant does the ApooDr AHU3G-50HFN-B 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 $1,735/yrYou save $1,066/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 ApooDr AHU3G-50HFN-B

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: $1,735
Current system, per year: $2,801
You save per year: $1,066
Payback: 19.2 years
Net after 10 years: -$9,839

Cooling $1,086Heating $648Electricity used: 10,841 kWhSaved vs. a minimum-efficiency heat pump: $416

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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Blueridge BMSAH60HHC · cold climate17.5 SEER2 · 9.5 HSPF2
AC Pro SPHP-Z-V060BB · cold climate17.5 SEER2 · 9.5 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 July 22, 2025. How we use the data.