What is the SEER2 rating of the Ducane 4DHP2S48M-1P?

The Ducane 4DHP2S48M-1P is rated at up to 21.8 SEER2 and 11.7 EER2 for cooling and up to 9.8 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 17 certified matchups SEER2 ranges from 20.9-21.8.

Is the Ducane 4DHP2S48M-1P good for cold climates?

Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 45,000 BTU/h at 5°F with a COP of 2.00, so it is still 2.0 times as efficient as electric resistance heat at that temperature.

How much does the Ducane 4DHP2S48M-1P cost to run per year?

At its rated efficiency it costs about $1,029-$3,078 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,314 in Phoenix and $2,606 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.

What refrigerant does the Ducane 4DHP2S48M-1P use?

It uses R-410A. R-410A is being phased down under the EPA AIM Act, and new systems are moving to R-454B and R-32.

48,000 BTU mini-split heat pump · 4DH SERIES

Ducane 4DHP2S48M-1P

Average cooling efficiency and below average heating efficiency for a 48,000 BTU mini-split heat pump, and certified for cold climates.

Ranks #53 of 146 48,000 BTU mini-splits for cooling efficiency, and costs about $1,256 a year to run in a mixed climate like Atlanta.

SEER2: 21.8 Cooling efficiency over a season
Average · beats 44%
HSPF2: 9.8 Heating efficiency over a season
Below average · beats 33%
EER2: 11.7 Cooling efficiency on a 95°F day
Below average · beats 16%
Heat at 5°F: 45,000 BTU/h92% of its 47°F output
Average · beats 48%

A good fit if…

Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 45,000 BTU/h at 5°F.
You want steady temperatures and quiet running - the compressor varies its speed.
You want a choice of indoor units - 17 certified pairings.

Think twice if…

You mainly need heat - its HSPF2 is below average for mini-splits.
You want the newest refrigerant - it uses R-410A, which is being phased down.

Calculate my running cost

Details

Specifications48,000 BTU, R-410A

General
Brand	Ducane
Also sold as	ALLIED, Concord, Armstrong Air, AIREASE
Outdoor unit model	4DHP2S48M-1P
Series	4DH SERIES
Type	Mini-split heat pump
Nominal size	48,000 BTU
CompressorVariable-speed units run longer at low power	Continuously variable
Refrigerant	R-410A
Connected (smart) capable	No
On the market since	January 1, 2022
Last certified	June 29, 2026
Cooling
SEER2Seasonal efficiency, higher is better	21.8 (range 20.9-21.8)
EER2Efficiency at 95°F outdoors	11.7
Cooling capacity	47,000-48,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	9.0-9.8
Capacity at 47°F	49,000 BTU/h
Capacity at 17°F	36,000 BTU/h
Capacity at 5°F	42,500-45,000 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	2.00
ENERGY STAR cold climate	Yes

Heating output as it gets colder92% kept at 5°F

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

Certified matchups17 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.
- DUCANE · cold climate	21.8	11.7	9.8	45,000	208106854
- CONCORD · cold climate	21.8	11.7	9.8	45,000	208106839
- Armstrong Air · cold climate	21.8	11.7	9.8	45,000	208106824
- AirEase · cold climate	21.8	11.7	9.8	45,000	208106809
- Allied · cold climate	21.8	11.7	9.8	45,000	208106794
- AirEase · cold climate	21.4	11.7	9.4	43,500	208106811
- CONCORD · cold climate	21.4	11.7	9.4	43,500	208106841
- DUCANE · cold climate	21.4	11.7	9.4	43,500	208106856
- Armstrong Air · cold climate	21.4	11.7	9.4	43,500	208106826
- Allied · cold climate	21.4	11.7	9.4	43,500	208106796
- DUCANE · cold climate	20.9	11.7	9.0	42,500	208106855
- CONCORD · cold climate	20.9	11.7	9.0	42,500	208106840
- Armstrong Air · cold climate	20.9	11.7	9.0	42,500	208106825
- Allied · cold climate	20.9	11.7	9.0	42,500	208106795
- DUCANE · cold climate	20.9	11.7	9.0	42,500	208106855
- Allied · cold climate	20.9	11.7	9.0	42,500	208106795
- AirEase · cold climate	20.9	11.7	9.0	42,500	208106810

Yearly running cost in 10 large cities$1,029-$3,078

Phoenix, AZ$1,314/yr
Miami, FL$1,029/yr
Houston, TX$1,179/yr
Atlanta, GA$1,256/yr
Los Angeles, CA$1,236/yr
New York, NY$3,078/yr
Chicago, IL$2,514/yr
Denver, CO$2,102/yr
Seattle, WA$1,301/yr
Minneapolis, MN$2,606/yr

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

Questions4

What is the SEER2 rating of the Ducane 4DHP2S48M-1P?: The Ducane 4DHP2S48M-1P is rated at up to 21.8 SEER2 and 11.7 EER2 for cooling and up to 9.8 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 17 certified matchups SEER2 ranges from 20.9-21.8.
Is the Ducane 4DHP2S48M-1P good for cold climates?: Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 45,000 BTU/h at 5°F with a COP of 2.00, so it is still 2.0 times as efficient as electric resistance heat at that temperature.
How much does the Ducane 4DHP2S48M-1P cost to run per year?: At its rated efficiency it costs about $1,029-$3,078 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,314 in Phoenix and $2,606 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
What refrigerant does the Ducane 4DHP2S48M-1P use?: It uses R-410A. R-410A is being phased down under the EPA AIM Act, and new systems are moving to R-454B and 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 $1,327/yrYou save $1,147/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 Ducane 4DHP2S48M-1P

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: $1,327
Current system, per year: $2,474
You save per year: $1,147
Payback: 15.7 years
Net after 10 years: -$6,532

Cooling $767Heating $560Electricity used: 8,294 kWhSaved vs. a minimum-efficiency heat pump: $574

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.

Similar 48,000 BTU models

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EMI MHMZ548DA · cold climate21.8 SEER2 · 9.8 HSPF2
C&H CH-HPR48M-230VO · cold climate21.8 SEER2 · 9.8 HSPF2
Lennox MLB048S4M-2P · cold climate21.8 SEER2 · 9.8 HSPF2
Bryant 38MGHBQ48EA3 · cold climate21.8 SEER2 · 9.8 HSPF2
MDV M5OX630-48HFN8-M · cold climate21.7 SEER2 · 10.0 HSPF2
Bosch BMS500-AAM048-1CSXHC · cold climate21.8 SEER2 · 9.8 HSPF2
GE Appliances MWHQ048NC2AA · cold climate21.6 SEER2 · 10.9 HSPF2

See all 146 48,000 BTU mini-splits, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of June 29, 2026. How we use the data.