SplitAtlas

Midea / Midea Easy Pro Extreme Heat

Midea Easy Pro Extreme Heat 18k R-454B 208/230V Mini-Split

Certified capacity
18,000 BTU/h[2]
SEER2
21.4 SEER2[2]
Heating floor
-22 F[1]
Voltage
230 V[1]
Install path
Professional install

Dead flat is the story on the 18k Extreme Heat: 18,000 BTU of heating at 47F, 17F, and 5F alike, with no taper across the range. Efficiency sits at 21.4 SEER2, 12.5 EER2, and 11.0 HSPF2 on R-454B - respectable rather than remarkable. What you are buying is unwavering 1.5-ton heat regardless of how cold it gets.

1 zoneProfessional installCurrent

Refrigerant generation

R-454B - current-generation refrigerant

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Error Codes
Midea Easy Pro Extreme Heat 18,000 BTU R-454B 208/230V (MSEHU-H18B-2A / MO1HS-H18B-2A) mini-split heat pump outdoor condenser

Image: Famous Supply

Data completeness: 100%
Last sourced
Jul 27, 2026

SplitAtlas score

8.9 / 10

Methodology
Cooling efficiencyAbove average

(21.4 SEER2) among 18k systems

Heating efficiencyAbove average

(11.0 HSPF2) among 18k systems

Cold-weather performanceTop quartile

(100% heat retained at 5F; -22 F heating floor) among 18k 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.

    Get a quote

Key ratings

Rated cooling

18,000BTU/h[2]

Rated heating

18,000BTU/h[2]

Best-fit use cases

Ideal for a large living space or floor zone in a cold climate where you want the reassurance of full, unchanging heat output on the worst nights.

Buyer review snapshot

Install difficulty

Professional install
  • Electrical: 230V.
  • Line set: connection type not sourced; max 213 ft.

Alternatives

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.

Review methodology

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

  • A perfectly flat 18,000 BTU heating curve from 47F down to 5F - no cold-weather derating at all.
  • Runs the low-GWP R-454B refrigerant.

Weaknesses

  • 12.5 EER2 is ordinary, so peak cooling efficiency is nothing special.
  • Full-size install: 230V, heavier line set, professional labor.

Climate suitability

Minimum heating ambient
-22 F[1]
Rated heating at 5F
18,000 BTU/h[2]
Rated heating at 17F
18,000 BTU/h[2]
Rated heating at 47F
18,000 BTU/h[2]

Specifications

Show
Manufacturer
Midea
Brand
Midea
Product line
Midea Easy Pro Extreme Heat
Model number
MSEHU-H18B-2A indoor / MO1HS-H18B-2A outdoor
Indoor unit model
MSEHU-H18B-2A
Outdoor unit model
MO1HS-H18B-2A
Number of zones
1
Max indoor units
not published
Rated cooling capacity
18,000 BTU/h[2]
Rated heating capacity
18,000 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
21.4 SEER2[2]
EER2
12.5 EER2[2]
HSPF2 (Region 4)
11 HSPF2[2]
HSPF2 (Region 5)
not published
COP
not published
COP at 47F
not published
COP at 5F
1.92 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
215471382[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 215471382, 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-18k-r454b-230v, AHRI Appendix M1 public detail 215471382
Specification sheet
AHRI Appendix M1 public detail 215471382
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

Frequently asked questions

Can I install the Midea Easy Pro Extreme Heat 18,000 BTU R-454B 208/230V (MSEHU-H18B-2A / MO1HS-H18B-2A) myself, or do I need a pro?
Midea Easy Pro Extreme Heat 18,000 BTU R-454B 208/230V (MSEHU-H18B-2A / MO1HS-H18B-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 18,000 BTU R-454B 208/230V (MSEHU-H18B-2A / MO1HS-H18B-2A) keep heating in a cold winter?
The manufacturer publishes 18,000 BTU/h of heating output at 5F. Rated heating operation extends down to -22 F. Certified heating efficiency is 11 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 18,000 BTU R-454B 208/230V (MSEHU-H18B-2A / MO1HS-H18B-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 18,000 BTU R-454B 208/230V (MSEHU-H18B-2A / MO1HS-H18B-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

Show
  1. 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

  2. Air-Conditioning, Heating, and Refrigeration Institute: AHRI Appendix M1 public detail for MO1HS-H18B-2A / MSEHU-H18B-2ASourced - AHRI directory

    Covers AHRI certification number, performance_spec.cold_climate_designation, Rated cooling capacity, COP at 5F, EER2, Rated heating capacity and more

  3. ENERGY STAR: ENERGY STAR exact row check for AHRI 215471382Sourced - Energy Star listing

    Covers Energy Star status

Last updated

Jul 27, 2026