What is the SEER2 rating of the Midea MO1CS-H09B-1A?

The Midea MO1CS-H09B-1A is rated at up to 19.5 SEER2 and 12.0 EER2 for cooling and up to 9.0 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.

Is the Midea MO1CS-H09B-1A good for cold climates?

Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 7,000 BTU/h at 5°F with a COP of 1.95, so it is still 2.0 times as efficient as electric resistance heat at that temperature.

How much does the Midea MO1CS-H09B-1A cost to run per year?

At its rated efficiency it costs about $218-$678 a year in electricity in large U.S. cities, depending on climate and local rates - for example $282 in Phoenix and $577 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.

Is the Midea MO1CS-H09B-1A the same as the MDV MOX230-09HFN10-B1E-D?

Yes, as far as the certified ratings go. ENERGY STAR lists both model numbers with identical efficiency, capacity and matchups, which means the same outdoor unit sold under a different brand or with a minor variant code (voltage, colour or region). The full list is on this page.

Which indoor units work with the Midea MO1CS-H09B-1A?

ENERGY STAR lists 1 certified combination for this outdoor unit. The highest-rated one uses MIDEA MSBNS-H09B-1A.

9,000 BTU mini-split heat pump · MO1 Series

Midea MO1CS-H09B-1A

Below average cooling and heating efficiency for a 9,000 BTU mini-split heat pump, and certified for cold climates.

Ranks #370 of 395 9,000 BTU mini-splits for cooling efficiency, and costs about $275 a year to run in a mixed climate like Atlanta.

SEER2: 19.5 Cooling efficiency over a season
Below average · beats 12%
HSPF2: 9.0 Heating efficiency over a season
Below average · beats 10%
EER2: 12.0 Cooling efficiency on a 95°F day
Below average · beats 25%
Heat at 5°F: 7,000 BTU/h70% of its 47°F output
Below average · beats 34%

A good fit if…

Your winters get properly cold - it is ENERGY STAR cold-climate certified, with 7,000 BTU/h at 5°F.
You want steady temperatures and quiet running - the compressor varies its speed.

Think twice if…

Cooling cost matters most - its SEER2 is below average for mini-splits.
You mainly need heat - its HSPF2 is below average for mini-splits.

Calculate my running cost

Details

Specifications9,000 BTU, R-454B

General
Brand	Midea
Also sold as	MDV
Outdoor unit model	MO1CS-H09B-1A
Series	MO1 Series
Type	Mini-split heat pump
Nominal size	9,000 BTU
CompressorVariable-speed units run longer at low power	Continuously variable
Refrigerant	R-454B
Connected (smart) capable	No
On the market since	January 4, 2025
Last certified	May 28, 2026
Cooling
SEER2Seasonal efficiency, higher is better	19.5 (range 19.5)
EER2Efficiency at 95°F outdoors	12.0
Cooling capacity	9,000 BTU/h
Heating
HSPF2Seasonal efficiency, higher is better	9.0
Capacity at 47°F	10,000 BTU/h
Capacity at 17°F	8,000 BTU/h
Capacity at 5°F	7,000 BTU/h
COP at 5°F2.0 = twice as efficient as a space heater	1.95
ENERGY STAR cold climate	Yes

Heating output as it gets colder70% kept at 5°F

Every heat pump delivers less heat as the outdoor temperature drops. Certified output of its matchup with MSBNS-H09B-1A at the standard test temperatures, in BTU/h:

Certified matchups1 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.
MSBNS-H09B-1A MIDEA · cold climate	19.5	12.0	9.0	7,000	217287953

Same unit, other model numbers1

These model numbers have exactly the same certified ratings and matchups as the Midea MO1CS-H09B-1A: the same equipment under another brand, or a variant code for voltage, colour or market. Everything on this page applies to them.

MDV MOX230-09HFN10-B1E-D

Yearly running cost in 10 large cities$218-$678

Phoenix, AZ$282/yr
Miami, FL$218/yr
Houston, TX$254/yr
Atlanta, GA$275/yr
Los Angeles, CA$271/yr
New York, NY$678/yr
Chicago, IL$555/yr
Denver, CO$465/yr
Seattle, WA$288/yr
Minneapolis, MN$577/yr

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

Questions6

What is the SEER2 rating of the Midea MO1CS-H09B-1A?: The Midea MO1CS-H09B-1A is rated at up to 19.5 SEER2 and 12.0 EER2 for cooling and up to 9.0 HSPF2 for heating. The exact figure depends on the indoor unit it is paired with.
Is the Midea MO1CS-H09B-1A good for cold climates?: Yes. At least one certified matchup meets the ENERGY STAR cold-climate criteria, delivering up to 7,000 BTU/h at 5°F with a COP of 1.95, so it is still 2.0 times as efficient as electric resistance heat at that temperature.
How much does the Midea MO1CS-H09B-1A cost to run per year?: At its rated efficiency it costs about $218-$678 a year in electricity in large U.S. cities, depending on climate and local rates - for example $282 in Phoenix and $577 in Minneapolis. The calculator on this page works it out for your city and compares it with your current system.
Is the Midea MO1CS-H09B-1A the same as the MDV MOX230-09HFN10-B1E-D?: Yes, as far as the certified ratings go. ENERGY STAR lists both model numbers with identical efficiency, capacity and matchups, which means the same outdoor unit sold under a different brand or with a minor variant code (voltage, colour or region). The full list is on this page.
Which indoor units work with the Midea MO1CS-H09B-1A?: ENERGY STAR lists 1 certified combination for this outdoor unit. The highest-rated one uses MIDEA MSBNS-H09B-1A.
What refrigerant does the Midea MO1CS-H09B-1A 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 $287/yrYou save $194/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 Midea MO1CS-H09B-1A

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: $287
Current system, per year: $480
You save per year: $194
Payback: 18.1 years
Net after 10 years: -$1,565

Cooling $162Heating $124Electricity used: 1,793 kWhSaved vs. a minimum-efficiency heat pump: $84

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 9,000 BTU models

MDV MOX130-09HFN1-BP0W19.5 SEER2 · 9.5 HSPF2
Star Air Kontrol SAK-09-DT2/220V · cold climate19.5 SEER2 · 11.0 HSPF2
ECO AC EHS-O09KBA · cold climate19.5 SEER2 · 8.8 HSPF2
ROVSUN TD-09D2HRH/DVO · cold climate19.6 SEER2 · 10.0 HSPF2
Trane / Mitsubishi Electric NTXSKH09A11219.0 SEER2 · 10.0 HSPF2
Mitsubishi Electric SUZ-KA09NA19.9 SEER2 · 11.1 HSPF2
Arcoaire D5CVRAH09AAK · cold climate19.0 SEER2 · 9.7 HSPF2
AUX XH09MAA3DI-20US20.0 SEER2 · 8.5 HSPF2

See all 395 9,000 BTU mini-splits, ranked

Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), certification of May 28, 2026. How we use the data.