M5OX631-36HFN10-M1X
M5OX631-36HFN10-M1X is in the certified data.
Its certified full-speed heating output at 5°F is 36,000–38,000 Btu/h10.55–11.14 kW, 100–106% of its 47°F rating (tests at different compressor speeds), depending on the pairing.
MDV · mini-split heat pump
M5OX631-36HFN10-M1X is in the certified data as of Sep 19, 2026. M5OX631-36HFN10-M1X changed its certified heat output at 17°F on 6 pairings in the certified data between August 2025 and September 2026. The new figure is higher on all 6.
- 36,000 Btu (3-ton)
- Mini-split
- Variable speed
- US and Canada
Certified heating and cooling
Heating at 47°F
36,00010.55NR
No 47°F rating for this pairing.
38,00011.14NR at 17°F
37,00010.84NR at 5°F
Btu/hkW, certified
2.00NR COP at 5°F
Heating and cooling by outdoor temperature
This pairing delivers 36,000 Btu/h10.55 kW of heat at 47°F, 38,000 Btu/h11.14 kW at 17°F, and 37,000 Btu/h10.84 kW at 5°F, 103% of its 47°F rating. It delivers 36,000 Btu/h10.55 kW of cooling at 95°F. At 5°F that is 6,000 Btu/h1.76 kW above the example heating load of 31,000 Btu/h9.09 kW; at 95°F it is 20,500 Btu/h6.01 kW above the example cooling load of 15,500 Btu/h4.54 kW.
Each bar is a separate certified test, drawn at its outdoor temperature, starting at zero. The 47°F figure is at normal speed; the 17 and 5°F figures are at full speed. The short dark line on each bar is the median of 3-ton mini-split models, one value per model. The shaded 17 to 45°F band is the frosting range: the outdoor coil can frost, and the unit pauses to defrost.
The dashed lines are example loads for a typical area of about 1,300 sq ft where winters reach 5°F: heating runs from 31,000 Btu/h9.09 kW at 5°F to 0 at 65°F, and cooling runs from 0 at 65°F to 15,500 Btu/h4.54 kW at 95°F, at 1,000 sq ft per ton. A house in a hot climate or with large west-facing windows can need twice as much cooling. They are examples, not your building.
AHRI certificate 214861787 · listed by MDV · certified May 6, 2026 · 1 pairing carries these values
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Threshold comparisons use the unit’s certified figures across its pairings. Programs also set service-area, installation, and product-list requirements.
Certified output and power use
| Outdoor temperature | Certified outputBtu/h | One scale | vs class median | COPat 5°F |
|---|---|---|---|---|
| 5°Ffull speed | 37,00010.84 kW | +19% | 2.00 | |
| 17°Ffull speed | 38,00011.14 kW | +28% | NR | |
| 47°Fnormal speed | 36,00010.55 kW | −3% | NR | |
| 95°Fcooling, full load | 36,00010.55 kW | — | NR |
EER2 12.55 in that test. SEER2 21.3 over the modeled cooling season.
Power use at each temperature
- Electrical input in the 5°F full-speed test
- 5.42kW
- Electrical input in the 95°F cooling test
- 2.87kW
- Seasonal average heating COP
- 3.11
These exclude backup resistance heat.
How it compares with other 36,000 Btu heat pumps
3-ton mini-split models
- This pairing at 5°F
- 37,000 Btu/h10.84 kWNR
- This unit at 5°F median across its pairings
- 37,000 Btu/h10.84 kW
- Median of 3-ton mini-split models at 5°F
- 31,000 Btu/h9.09 kW
- Models in this group
- 553
This unit is above 81% of them, at number 104 of 553 by heat at 5°F. The middle half of the group runs 26,000 to 36,000 Btu/h.
Closest models by heat at 5°F
- 37MGHAQ36EA3Bryant, Carrier + 3 more · 37,000 Btu/h
- CSZ36H525ZMOSea Breeze · 37,000 Btu/h
- EDSO-36HEco Air · 37,000 Btu/h
- ML36HP230MULH - OMainline · 37,000 Btu/h
- MO5GX-H36B-2AMidea · 37,000 Btu/h
- MXZ-SM36NLHZMitsubishi Electric · 37,000 Btu/h
Every 36,000 Btu (3-ton) unit, ranked by cooling efficiency, then heating efficiency
Certified values for M5OX631-36HFN10-M1X
6 pairings · 6 AHRI certificates
This pairing is the one shown above. Under all pairings, a single figure means every pairing agrees and a range means the pairing decides.
| This pairing | All pairings | |
|---|---|---|
| Heating | ||
| Heat output at 47°F normal speed | 36,000 Btu/h10.55 kWNR | 36,000 Btu/h10.55 kW |
| Heat output at 17°F full speed | 38,000 Btu/h11.14 kWNR | 38,000–38,500 Btu/h11.14–11.28 kW |
| Heat output at 5°F full speed | 37,000 Btu/h10.84 kWNR | 36,000–38,000 Btu/h10.55–11.14 kW |
| Heat output below 5°F | NR | NR |
| Cold output 5°F output as a % of the 47°F rating | 103%NR | |
| COP at 5°F full speed | 2.00NR | 1.90–2.00 |
| HSPF2 Region IV | 10.6NR | 10.5–11.3 |
| Cooling | ||
| Cooling capacity at 95°F full-load test | 36,000 Btu/h10.55 kWNR | 36,000 Btu/h10.55 kW |
| EER2 at 95°F | 12.55NR | 12.0–13.1 |
| SEER2 cooling season | 21.3NR | 19.5–23.1 |
| Cooling at other temperatures | NR | NR |
| Equipment and listing | ||
| Refrigerant | R-454B | |
| Compressor | Variable speed | |
| Indoor unit | None listed | None |
| Furnace | No furnace | None |
| Cold-climate designation EPA's designation, as published | Yes | On every pairing |
| ENERGY STAR Most Efficient EPA's designation, as published | Yes | On every pairing |
| Where it is sold | US and Canada | US and Canada |
| Model string as certified | M5OX631-36HFN10-M1X* | |
Pairings, by indoor-unit class
6 certified pairings
One row per indoor unit certified with this outdoor unit.
Ductless indoor
-
None listed (the pairing on screen) MDV 37,200 Btu/h10.90 kWat 5°F, full speed
| Indoor unit | Brand | At 5°FBtu/hkW · full speed | At 47°FBtu/hkW · normal speed | At 95°FBtu/hkW · cooling | Cold output% of 47°F rating | COP 5°Ffull speed | Cold climate | Pairings |
|---|---|---|---|---|---|---|---|---|
| None listed (the pairing on screen) | MDV | 37,20010.90 | 36,00010.55 | 36,00010.55 | 103% | 2.00 | Yes | 6 |
Sold as, and units with identical certified values
Brands listing this model number
Model number as listed
- M5OX631-36HFN10-M1X* 3 pairings
- M5OX631-36HFN10-M1X** 3 pairings
Variants of the same model number
2 units in this group. Basis: identical certified values in the certified data. This grouping is our inference, not a field in the certified data.
1 of 2 shown.
Other model numbers with identical certified values
2 units share this record. Basis: identical certified values in the certified data. This grouping is our inference, not a field in the certified data.
1 of 2 shown.
What affects the price
We don't have prices. These things drive the cost.
- The size of the unit, and the indoor equipment on the same certificate.
- Whether existing ductwork is reused, altered, or replaced.
- The electrical work: a circuit, a disconnect, and sometimes a panel change.
- Refrigerant line length and how the outdoor unit is mounted.
- Permits and inspection, which vary by municipality.
- Removing and disposing of the old equipment.
- Local labor rates and how busy the season is.
- Rebates and tax credits, which change and have deadlines.
Product history
- M5OX631-36HFN10-M1X changed its certified heat output at 17°F on 6 pairings in the certified data between August 2025 and September 2026. The new figure is higher on all 6.
- M5OX631-36HFN10-M1X was in the certified data by September 2024.
History and definitions
History
- First certified record
- Most recent certified record
- Measurements reported
- May 6, 2026
- Status
- In the certified data
Field definitions
- COP
- Heat delivered for each unit of electricity used. A COP of 2.5 gives 2.5 times the heat of an electric baseboard heater.
- HSPF2
- Heating efficiency over a typical season. Higher uses less electricity.
- SEER2
- Cooling efficiency over a typical season. Higher uses less electricity.
- EER2
- Cooling output divided by electrical input in the 95°F full-load test, in Btu/h per watt.
- Cold output
- Heat output at 5°F as a percentage of the 47°F rating.
- % of rating at 17°F
- Heat output at 17°F as a percentage of the 47°F rating.
NR not in the certified dataNC not cold-climate certifiedSP single pairing onlyVP varies by pairing; see the pairings tableWD withdrawn since the certified data was last read