What is the SEER2 rating of the MDV MOX630-36HFN10-M3X?

The MDV MOX630-36HFN10-M3X is rated at up to 18.0 SEER2 and 12.0 EER2 for cooling and up to 10.3 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 61 certified matchups SEER2 ranges from 15.2-18.0.

Is the MDV MOX630-36HFN10-M3X good for cold climates?

Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 39,000 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 MDV MOX630-36HFN10-M3X cost to run per year?

At its rated efficiency it costs about $923-$2,266 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,121 in Phoenix and $1,868 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 MDV MOX630-36HFN10-M3X?

ENERGY STAR lists 61 certified combinations for this outdoor unit. The highest-rated ones use MVBDM-36HWFN10-WB3, MVBDM-36HWFN10-WB3-D, MVBDM-36HWFN10-WB3-MAS.

3-ton central heat pump · MVB Series

MDV MOX630-36HFN10-M3X

Average cooling efficiency and excellent heating efficiency for a 3-ton central heat pump, and certified for cold climates.

Ranks #92 of 302 3 ton central heat pumps for cooling efficiency, and costs about $971 a year to run in a mixed climate like Atlanta.

SEER2: 18.0 Cooling efficiency over a season
Average · beats 66%
HSPF2: 10.3 Heating efficiency over a season
Excellent · beats 92%
EER2: 12.0 Cooling efficiency on a 95°F day
Average · beats 64%
Heat at 5°F: 39,000 BTU/h101% 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 39,000 BTU/h at 5°F.
It will heat most of the year - its HSPF2 beats 92% of central heat pumps.
You want steady temperatures and quiet running - the compressor varies its speed.
You want a choice of indoor units - 61 certified pairings.

Think twice if…

Nothing stands out - its ratings have no weak spot for its class.

Calculate my running cost

Details

Specifications3 ton, R-454B

General
Brand	MDV
Outdoor unit model	MOX630-36HFN10-M3X
Series	MVB Series
Type	Central heat pump
Nominal size	3 ton
CompressorVariable-speed units run longer at low power	Continuously variable
Refrigerant	R-454B
Connected (smart) capable	No
On the market since	October 12, 2022
Last certified	September 16, 2026
Cooling
SEER2Seasonal efficiency, higher is better	18.0 (range 15.2-18.0)
EER2Efficiency at 95°F outdoors	10.1-12.0
Cooling capacity	34,000-36,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	8.4-10.3
Capacity at 47°F	35,000-38,000 BTU/h
Capacity at 17°F	27,000-33,000 BTU/h
Capacity at 5°F	31,000-39,000 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	1.75-1.90
ENERGY STAR cold climate	Yes

Heating output as it gets colder101% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with MVBDM-36HWFN10-WB3 at the standard test temperatures, in BTU/h:

Certified matchups61 indoor units

The same outdoor unit scores differently with each indoor unit and furnace. The 60 highest-rated of 61 are shown. Ask your installer for the AHRI reference number of the exact system you are quoted.

Indoor unit	Furnace	SEER2	EER2	HSPF2	Heat @5°F	AHRI ref.
MVBDM-36HWFN10-WB3 · cold climate	-	18.0	12.0	10.0	37,400	215323719
MVBDM-36HWFN10-WB3-D · cold climate	-	18.0	12.0	10.0	37,400	215449739
MVBDM-36HWFN10-WB3-MAS · cold climate	-	18.0	12.0	10.0	37,400	216030944
MVBC-36HWFN10-MC3E · cold climate	-	17.4	11.7	10.3	39,000	214861546
MVBC-36HWFN10-MC3E-D · cold climate	-	17.4	11.7	10.3	39,000	214861592
MVBC-36HWFPN10-MC3E · cold climate	-	17.4	11.7	10.3	39,000	215865884
MVBC-36HWFN10-MC3E-MAS · cold climate	-	17.4	11.7	10.3	39,000	216030935
MVBE-36HWFN10-WL3E · cold climate	-	16.8	11.2	9.6	34,600	216025754
MVBE-36HWFN10-WL3E-MAS · cold climate	-	16.8	11.2	9.6	34,600	217509964
MVBM-36C24T4N10 · cold climate	RL18100C20MPS1	16.8	11.4	9.6	34,000	217753610
MVBM-36C24T4N10 · cold climate	RL18080C16MPS1	16.7	10.9	9.5	34,000	217753608
MVBM-36C24T4N10 · cold climate	RL18100C16MPS1	16.7	11.4	9.5	34,000	217753609
MVBM-36B24T4N10 · cold climate	RL18080B12MPS1	16.4	10.6	9.4	34,000	217753607
MVBM-36B24T4N10 · cold climate	MGV96U060B3C	16.3	10.8	9.2	33,000	217607705
MVBM-36C24T4N10 · cold climate	RG19080C16MPS1	16.3	10.7	9.2	34,000	217753553
MVBM-36C24T4N10 · cold climate	S9V2C100D5VS***	16.2	11.0	9.3	33,000	217753403
MVBM-36C24T4N10 · cold climate	S9V2C100U5VS***	16.2	11.0	9.3	33,000	217753404
MVBM-36C24T4N10 · cold climate	ML296UH110XV60C*	16.1	11.0	9.5	33,000	217754188
MVBM-36C24T4N10 · cold climate	S9V2C080U5VS***	16.0	10.9	9.4	33,000	217753402
MVBM-36C24T4N10 · cold climate	MGV96U080C4C	16.0	11.0	9.3	33,000	217607707
MVBM-36B24T4N10 · cold climate	MGV96U080B3C	16.0	10.7	9.1	33,000	217607706
MVBM-36C24T4N10 · cold climate	RG19100C20MPS1	15.9	11.1	9.2	34,000	217753556
MVBM-36A24T4N10 · cold climate	RL18040A12MPS1	15.9	10.2	8.5	32,000	217753605
MVBM-36C24T4N10 · cold climate	-	15.8	10.7	9.4	36,000	216620307
MVBM-36B24T4N10 · cold climate	-	15.8	10.7	9.4	36,000	216620306
MVBM-36B24T4N10-MAS · cold climate	-	15.8	10.7	9.4	36,000	216623449
MVBM-36C24T4N10-MAS · cold climate	-	15.8	10.7	9.4	36,000	216623450
MVBM-36C24T4N10 · cold climate	RG19080C20MPS1	15.8	10.7	9.4	34,000	217753554
MVBM-36C24T4N10 · cold climate	ML196UH090XE36C*	15.8	10.7	9.2	33,000	217754183
MVBM-36C24T4N10 · cold climate	S9X1C080U5PSB**	15.6	10.6	9.3	33,000	217753411
MVBM-36C24T4N10 · cold climate	S9X2C080U5PSB**	15.6	10.6	9.3	33,000	217753497
MVBM-36C24T4N10 · cold climate	ML193UH090XE36C*	15.6	10.7	9.2	33,000	217754179
MVBM-36B24T4N10 · cold climate	S9V2B080U4VS***	15.5	10.4	9.2	33,000	217550351
MVBM-36C24T4N10 · cold climate	ML296UH090XV48B*	15.5	10.7	9.1	33,000	217754187
MVBM-36C24T4N10 · cold climate	ML296UH090XV48C*	15.5	10.7	9.1	33,000	217896565
MVBM-36A24T4N10 · cold climate	RG19060A10MPS1	15.5	10.1	8.4	32,000	217753552
MVBL-36HWFN10-WK3 · cold climate	-	15.4	10.2	9.8	36,000	216620296
MVBM-36C24T4N10 · cold climate	MGV80M080C4NB	15.4	10.8	9.4	33,000	218731285
MVBM-36C24T4N10 · cold climate	RG19100C16MPS1	15.4	11.0	9.2	34,000	217753555
MVBM-36B24T4N10 · cold climate	ML193DF070XE36B*	15.4	10.5	9.1	33,000	217754176
MVBM-36B24T4N10 · cold climate	ML196UH070XE36B*	15.4	10.5	8.7	31,000	217754181
MVBM-36B24T4N10 · cold climate	RG19080B12MPS1	15.3	10.6	9.6	35,000	217595492
MVBM-36B24T4N10 · cold climate	RG19060B12MPS1	15.3	10.6	9.5	34,000	217595490
MVBM-36C24T4N10 · cold climate	ML193DF090XE48B*	15.3	10.7	9.3	33,000	217754178
MVBM-36C24T4N10 · cold climate	ML193DF090XE48C*	15.3	10.7	9.3	33,000	217896556
MVBM-36C24T4N10 · cold climate	ML296DF090XV60C*	15.3	10.6	9.2	33,000	217754186
MVBM-36C24T4N10 · cold climate	ML196DF090XE48B*	15.3	10.8	9.1	32,000	217754182
MVBM-36C24T4N10 · cold climate	ML196DF090XE48C*	15.3	10.8	9.1	32,000	217896561
MVBM-36B24T4N10 · cold climate	ML193UH070XE36B*	15.3	10.4	9.0	33,000	217754177
MVBM-36B24T4N10 · cold climate	S9V2B040U3VS***	15.3	10.3	8.9	33,000	217550348
MVBM-36B24T4N10 · cold climate	C60-2-V	15.3	10.5	8.8	33,000	217615695
MVBM-36C24T4N10 · cold climate	MGV96U100C5C	15.2	11.0	9.3	34,000	217607708
MVBM-36C24T4N10 · cold climate	C120-M-V	15.2	10.6	9.3	34,000	217615699
MVBM-36C24T4N10 · cold climate	ML193UH090XE48B*	15.2	10.7	9.3	33,000	217754180
MVBM-36C24T4N10 · cold climate	ML196UH090XE48B*	15.2	10.7	9.3	33,000	217754184
MVBM-36C24T4N10 · cold climate	ML193UH090XE48C*	15.2	10.7	9.3	33,000	217896558
MVBM-36C24T4N10 · cold climate	ML196UH090XE48C*	15.2	10.7	9.3	33,000	217896563
MVBM-36C24T4N10 · cold climate	C105-M-V	15.2	10.7	9.2	34,000	217615697
MVBM-36B24T4N10 · cold climate	S9V2B060U4VS***	15.2	10.3	9.0	33,000	217550349
MVBM-36B24T4N10 · cold climate	S9V2B060D3VS***	15.2	10.3	9.0	33,000	217550350

Yearly running cost in 10 large cities$923-$2,266

Phoenix, AZ$1,121/yr
Miami, FL$936/yr
Houston, TX$1,004/yr
Atlanta, GA$971/yr
Los Angeles, CA$935/yr
New York, NY$2,266/yr
Chicago, IL$1,829/yr
Denver, CO$1,512/yr
Seattle, WA$923/yr
Minneapolis, MN$1,868/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 MDV MOX630-36HFN10-M3X?: The MDV MOX630-36HFN10-M3X is rated at up to 18.0 SEER2 and 12.0 EER2 for cooling and up to 10.3 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with; across its 61 certified matchups SEER2 ranges from 15.2-18.0.
Is the MDV MOX630-36HFN10-M3X good for cold climates?: Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 39,000 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 MDV MOX630-36HFN10-M3X cost to run per year?: At its rated efficiency it costs about $923-$2,266 a year in electricity in large U.S. cities, depending on climate and local rates - for example $1,121 in Phoenix and $1,868 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 MDV MOX630-36HFN10-M3X?: ENERGY STAR lists 61 certified combinations for this outdoor unit. The highest-rated ones use MVBDM-36HWFN10-WB3, MVBDM-36HWFN10-WB3-D, MVBDM-36HWFN10-WB3-MAS.
What refrigerant does the MDV MOX630-36HFN10-M3X 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 $1,095/yrYou save $761/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 MDV MOX630-36HFN10-M3X

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: $1,095
Current system, per year: $1,856
You save per year: $761
Payback: 17.7 years
Net after 10 years: -$5,892

Cooling $704Heating $391Electricity used: 6,847 kWhSaved vs. a minimum-efficiency heat pump: $328

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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MOOVAIR MSHMB36R2AN1 · cold climate18.0 SEER2 · 10.3 HSPF2
Day & Night D5CUHAH36AAK · cold climate18.0 SEER2 · 10.3 HSPF2
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See all 302 3 ton central heat pumps, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of September 16, 2026. How we use the data.