Midea / Midea Easy Pro Extreme Heat
Midea Easy Pro Extreme Heat 12k R-454B 208/230V Mini-Split
The 12k Extreme Heat mirrors its 9k sibling's flat heating curve - a steady 12,000 BTU held from 47F to 17F and 11,500 BTU at 5F - but with more conventional efficiency at 25.4 SEER2, 13.4 EER2, and 10.5 HSPF2 on R-454B. It is the choice when you want that no-fade heating profile in a standard one-ton head.
1 zoneProfessional installCurrent
Refrigerant generation
R-454B - current-generation refrigerant
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Data completeness: 100%
- Last sourced
- Jul 27, 2026
SplitAtlas score
9.1 / 10
Cooling efficiencyTop quartile
(25.4 SEER2) among 12k systems
Heating efficiencyAbove average
(10.5 HSPF2) among 12k systems
Cold-weather performanceTop quartile
(95.8% heat retained at 5F; -22 F heating floor) among 12k systems
WarrantyTop 10%
(12 yr parts / 12 yr compressor) across the catalogue
Feature setAbove average
(5 verified features) across the catalogue
Documentation & partsBelow average
(6 manuals; spec sheet) across the catalogue
Not evaluated
- Installation accessibility — not applicable (professional install)N/A
professional install - DIY-accessibility not applicable
- Price-to-value — not evaluatedN/A
This is a professionally installed, quote-only system, so we can't score its price. Get an installed quote to compare real cost.
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Key ratings
Best-fit use cases
Best for a standard bedroom or mid-size room in a cold climate where holding full heat through the deep freeze matters more than chart-topping efficiency.
Buyer review snapshot
Best for / skip if
Best for
- Top efficiency shortlists; SEER2 is 25.4.
Install difficulty
Professional install
- Electrical: 230V.
- Line set: connection type not sourced; max 213 ft.
Availability and price context
We could not verify a current retail price for this model. We could not find a published consumer price for this model when we last checked on 2026-07-27.
Source date
- Model data sourced
- Jul 27, 2026
- Page reviewed
- Jul 27, 2026
- Source-backed records
- 3
- Newest source retrieved
- Jul 27, 2026
Warranty tiers
Warranty: 12 years parts and no separate compressor term published under extended warranty terms.
Model context
- Structured ratings
- Certification: ENERGY STAR certified and AHRI cold-climate designated. Refrigerant: current low-GWP R-454B. Minimum heating ambient: -22 F.
Strengths
- Full 12,000 BTU heat maintained through 17F, still 11,500 BTU at 5F - no cold-weather cliff.
- Current low-GWP R-454B refrigerant and Midea's OEM-grade build.
Weaknesses
- 13.4 EER2 and 10.5 HSPF2 are only average, so its efficiency is unremarkable outside the heating strength.
- Standard caveats apply: 230V circuit and a licensed installer.
Climate suitability
- Minimum heating ambient
- -22 F[1]
- Rated heating at 5F
- 11,500 BTU/h[2]
- Rated heating at 17F
- 12,000 BTU/h[2]
- Rated heating at 47F
- 12,000 BTU/h[2]
Specifications
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- Manufacturer
- Midea
- Brand
- Midea
- Product line
- Midea Easy Pro Extreme Heat
- Model number
- MSEHU-H12B-2A indoor / MO1HS-H12B-2A outdoor
- Indoor unit model
- MSEHU-H12B-2A
- Outdoor unit model
- MO1HS-H12B-2A
- Number of zones
- 1
- Max indoor units
- not published
- Rated cooling capacity
- 12,000 BTU/h[2]
- Rated heating capacity
- 12,000 BTU/h[2]
- Voltage
- 230 V[1]
- MCA
- No model-specific value is published on the current consumer product listing
- Maximum fuse or breaker size
- No model-specific value is published on the current consumer product listing
- Breaker needed
- not published
- SEER2
- 25.4 SEER2[2]
- EER2
- 13.4 EER2[2]
- HSPF2 (Region 4)
- 10.5 HSPF2[2]
- HSPF2 (Region 5)
- not published
- COP
- not published
- COP at 47F
- not published
- COP at 5F
- 1.8 COP[2]
- Minimum outdoor heating temperature
- -22 F[1]
- Minimum outdoor cooling temperature
- -13 F[1]
- Maximum outdoor temperature
- 122 F[1]
- Indoor noise range
- No model-specific value is published on the current consumer product listing
- Outdoor noise rating
- 53 dBA[1]
- Indoor weight
- No model-specific value is published on the current consumer product listing
- Outdoor weight
- No model-specific value is published on the current consumer product listing
- Refrigerant
- R-454B[2]
- Refrigerant charge
- not published
- Manufacturer coverage
- not published
- Line-set size
- No model-specific value is published on the current consumer product listing liquid / No model-specific value is published on the current consumer product listing suction
- Included line-set length
- Professional installations use separately selected line sets
- Maximum line-set length
- 213 ft[1]
- Max line set per indoor
- not published
- Maximum elevation difference
- No model-specific value is published on the current consumer product listing
- Max height between indoor units
- not published
- Wi-Fi support
- supported[1]
- Energy Star status
- ENERGY STAR certified[3]
- AHRI certification number
- 215471381[2]
- Warranty
- Best case: 12 yr parts / no separate compressor term (extended warranty terms). 12-year extended warranty listed for Midea single-zone systems; terms apply
- Install path
- Professional install
- Retail price
- We could not find a published consumer price for this model when we last checked on 2026-07-27.
- Available retailers
- not published
- Manual links
- ENERGY STAR exact check 215471381, Easy Pro Extreme Heat installation documentation listing, Easy Pro Extreme Heat high-wall indoor product page, Midea Single-Zone Extreme Heat Pump, HVACDirect exact Midea offer check midea-easy-pro-extreme-heat-12k-r454b-230v, AHRI Appendix M1 public detail 215471381
- Specification sheet
- AHRI Appendix M1 public detail 215471381
- Last sourced date
- Jul 27, 2026
Electrical requirements
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- Voltage
- 230 V[1]
- Voltage range
- 208/230V[1]
- Phase
- 1[1]
- Frequency
- 60 Hz[1]
- MCA
- No model-specific value is published on the current consumer product listing
- Breaker needed
- not published
- Maximum breaker size
- No model-specific value is published on the current consumer product listing
- Maximum fuse size
- No model-specific value is published on the current consumer product listing
- Maximum cooling current
- not published
- Maximum heating current
- not published
- Manufacturer wire notes
- not published
Installation considerations
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- Liquid line
- No model-specific value is published on the current consumer product listing
- Suction line
- No model-specific value is published on the current consumer product listing
- Line connection type
- not published
- Precharged length
- not published
- Included line-set length
- Professional installations use separately selected line sets
- Maximum line-set length
- 213 ft[1]
- Max line set per indoor
- not published
- Max height between indoor units
- not published
- Indoor dimensions
- No model-specific value is published on the current consumer product listing
- Outdoor dimensions
- No model-specific value is published on the current consumer product listing
- Indoor weight
- No model-specific value is published on the current consumer product listing
- Outdoor weight
- No model-specific value is published on the current consumer product listing
- Drain size
- not published
Related systems and guides
- More Midea systems
- Midea sibling model
- Midea 115 V option
- LG Mid Static Ducted R-32 12k 230V
- Midea 230 V option
- Guide library
- Mini split buying guide
- Single-zone vs multi-zone mini splits
- Troubleshooting
- Do mini splits work in cold weather?
- Midea mini split review: is Midea any good?
- The best 12,000 BTU mini splits of 2026
- The best cold-climate mini splits of 2026
- The best mini splits for heating of 2026
- Mini split heating capacity in the cold: what your unit actually delivers at 5F
- The mini split defrost cycle, explained
- The best DIY mini splits of 2026
- What "DIY mini split" actually means
- How to install a mini split (DIY overview)
- Mini split not heating
- Mini split indoor unit freezing up
- Mini split remote not working
- Mini split condensate pump problems
- Mini split weak airflow
- Line sets
- Line-set covers
Frequently asked questions
- Can I install the Midea Easy Pro Extreme Heat 12,000 BTU R-454B 208/230V (MSEHU-H12B-2A / MO1HS-H12B-2A) myself, or do I need a pro?
- Midea Easy Pro Extreme Heat 12,000 BTU R-454B 208/230V (MSEHU-H12B-2A / MO1HS-H12B-2A) is built for professional installation: the line set must be flared, evacuated, and charged, which requires EPA-certified refrigerant handling. Installing it outside the manufacturer's requirements can void the warranty, so budget for a qualified HVAC installer.
- Will the Midea Easy Pro Extreme Heat 12,000 BTU R-454B 208/230V (MSEHU-H12B-2A / MO1HS-H12B-2A) keep heating in a cold winter?
- The manufacturer publishes 11,500 BTU/h of heating output at 5F. Rated heating operation extends down to -22 F. Certified heating efficiency is 10.5 HSPF2. Match those numbers against your climate's design temperature - in cold regions, output at 5F matters far more than the nameplate capacity measured at 47F.
- What electrical circuit does the Midea Easy Pro Extreme Heat 12,000 BTU R-454B 208/230V (MSEHU-H12B-2A / MO1HS-H12B-2A) need?
- Published electrical requirements: 230 V voltage, No model-specific value is published on the current consumer product listing minimum circuit ampacity, and No model-specific value is published on the current consumer product listing maximum breaker or fuse sizing. Confirm the final circuit against the unit nameplate and local code with a licensed electrician.
- How far can the outdoor unit be from the indoor head?
- The published maximum line-set length is 213 ft. Longer runs than the included set allows typically mean added refrigerant and a pro visit, so measure the planned routing before ordering.
- What warranty does the Midea Easy Pro Extreme Heat 12,000 BTU R-454B 208/230V (MSEHU-H12B-2A / MO1HS-H12B-2A) carry?
- The manufacturer publishes these warranty tiers: Best case: 12 yr parts / no separate compressor term (extended warranty terms). Registration requirements and proof of qualified installation commonly affect coverage, so read the warranty terms before install day.
Data sources
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- Midea America Corp.: Midea Single-Zone Extreme Heat PumpSourced - manufacturer product page
Covers Frequency, Phase, Voltage, Voltage range, Maximum line-set length, Outdoor noise rating and more
- Air-Conditioning, Heating, and Refrigeration Institute: AHRI Appendix M1 public detail for MO1HS-H12B-2A / MSEHU-H12B-2ASourced - AHRI directory
Covers AHRI certification number, performance_spec.cold_climate_designation, Rated cooling capacity, COP at 5F, EER2, Rated heating capacity and more
- ENERGY STAR: ENERGY STAR exact row check for AHRI 215471381Sourced - Energy Star listing
Covers Energy Star status
Last updated
Jul 27, 2026