Mitsubishi Electric Single Cooling Ductless Split systems Wall-Mounted Style

Cooling only

  • Nano Platinum & Blue Enzyme Filters
  • Variable Compressor Speed Inverter Technology
  • Ozone-Friendly R-410A Refrigerant
  • Significant Energy Savings (up to 30%)
  • Fuzzy Logic “I Feel” Mode for Comfort Cooling
  • Super-Quiet Technology – Only 19dB(A)
  • Wide Airflow – Up to 150°
  • Long Pipe Runs – Up to 100 ft.
  • Refrigerant Pre-Charged
  • Easy Installation – No Ductwork Needed
  • Optional Wired Remote Controller
  • 5-Year Parts Warranty
  • 7-Year Compressor Warranty


Indoor Unit:

  • MS-A09WA-1
  • MS-A12WA-1

Outdoor Unit:

  • MU-A09WA
  • MU-A12WA-1

Ducted or ductless, it’s a comfortable choice

Mr. Slim is best known as the perfect solution for dwellings without existing ductwork. The powerful simplicity
of an indoor and outdoor unit connected by two refrigerant lines that run through a small 10-cm opening in the
wall or ceiling is both effective and cost-efficient. Mitsubishi Electric also introduced the convenient option of
using a ducted indoor unit as well. By using compact ductwork connected to a ceiling-concealed indoor unit,
Mr. Slim can deliver its efficient temperature control in a truly discreet manner.
An innovative fan-blade design and grill shape in our outdoor unit makes the M-series system one of the
quietest on the market. Our systems are available in sizes from 6,000 to 48,000 BTU/h, offering one of the
widest selections in the industry. In fact, with our newest model, you can even install up to 8 indoor units to a
single outdoor unit, keeping exterior installation space to a minimum.

Complete home comfort comes in many degrees

In conventional heating and cooling systems, it’s one thermostat and one temperature for everyone. But inMr.slim
real life, one size does not fit all. With a Mr. Slim Multi-Split system, each room of your home can have its own
indoor unit – up to 8 units in total, and they can all be connected to a single outdoor condenser unit. That
means everyone can enjoy optimum comfort, no matter what room they’re in. And you don’t have to commit to installing a full system. As your needs change, additional indoor units are easy to add on to your existing Multi-Split Mr. Slim system.
If you’re looking to heat or cool a single space like a room over a garage or a home extension, your best choice is a Mr. Slim Single-Split system. A Single-Split system connects a single dedicated outdoor unit to a single indoor unit. No matter what your needs are, there’s a Mr. Slim solution that’s right for you.

Low energy use is high satisfaction

At the heart of Mr. Slim lies Variable Compressor Speed Inverter (VCSi) technology

Conventional compressors work through on/off cycles only, in which the system starts with a surge and stays on at a fixed speed until no longer needed. This on/off cycle constantly uses maximum power (full load) and is an inefficient way to heat or cool your home. VCSi VCSIsystems, on the other hand, operate efficiently by continually detecting changes in room temperature and readjusting the compressor speed to provide high-speed heating or cooling when needed.
By maintaining a consistent temperature using only the power required (part load), your energy costs are reduced.

Two ways VCSi technology saves energy

1- You probably know that it takes more energy to start a car or computer than it takes to run it. The same is true for conventional heating and cooling units. With Mr. Slim, however, the compressor starts at a minimum speed (soft start) and increases to match the required load. This prevents the compressor from drawing the extra amps needed during a start-up, as is the case with a conventional compressor that always runs at maximum speed.

2- Once the desired temperature of a room is reached, the compressor slows down to maintain a consistent temperature. By slightly adjusting speed instead of shutting off and turning on again, electrical loads are kept constant and minimal rather than peaking wastefully.

See how Mr. Slim compares

VCSi systems Conventional systems
VCSi compressor speeds up and slows down to maintain the conditioned space temperature. The conventional compressor turns on and off to maintain the temperature. A compressor draws more amps at start-up than any other time.
Energy consumed by a VCSi compressor is directly related to the required amount of cooling or heating.  (Capacity changes as needed.) Conventional compressor consumes the maximum amount of energy to produce the maximum amount of cooling or heating at all times. (Capacity does not change.)
VCSi compressor helps system reach its set point quicker by running at a higher RPM for a shorter period of time, then ramps down to maintain temperature. Conventional compressor runs at same RPM for the longer period of time, then switches on and off to maintain temperature.
 Indoor temperature swing is minimized with the VCSi system because the indoor coil activates longer. As temperature changes slightly, compressor speed also adjusts slightly to compensate. The conventional system kicks back on at full speed to compensate for small changes in temperature.


Conventional air conditioners

Conventional air conditioners take a long time to reach their set-point temperature, and when they finally do, the temperature fluctuates. However, VCSi closely controls the compressor and senses indoor cooling and heating needs, so the desired temperature is reached faster and remains consistent. This allows Mr. Slim to run more efficiently and reduces energy costs.


Energy Star

Mr. Slim – a real Energy Star

With a roster of 22 Energy Star-certified units, Mitsubishi Electric Canada remains an industry leader in highly efficient, eco-friendly heating and air conditioning technology. Enjoy year-round comfort and energy savings, all while leaving behind a smaller carbon footprint. It’s just another way we’re making changes for the better.


Mitsubishi Electric Single Cooling Ductless Split systems Wall-Mounted Style was last modified: August 2nd, 2023 by HVAC Expert

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Wireless remote control

wireless-remote-control-ductless-127x300You control your comfort with the touch of a button, without even getting out of your chair.
With a large and easy-to-read display, it’s easier to use than a TV remote.
(Available with wall-mounted and floor-standing models. Style of the remote controller and the available functions may differ depending on the model.)

Absence Detection
When no-one is in the room, the unit automatically switches to energy-saving mode.

Powerful Mode
Unit temporarily operates at maximum capacity for 15 minutes to heat or cool your room faster.

Smart Set
Recall your programmed temperature settings at the touch of a button. You can also set back temperatures to an economical 10°C/50°F to keep your home and pipes from freezing while you’re on vacation.

Natural Flow
Airflow is directed much like natural wind, providing a gentle breeze for enhanced comfort.

Quiet Mode
Provides whisper-quiet comfort that allows you to enjoy those tranquil moments.

Wide Airflow
Combined with the 5-Step vane control, you can adjust the airflow to 42 different patterns, reaching as far as 39 ft from the unit.

Left/Right Vane
Control the direction of the vertical airflow with the left and right vanes. Send the air to specific areas or allow the vanes to oscillate.

Direct/Indirect Airflow
Enhance comfort by averting airflow away from people, or set direct airflow to target people for quick cooling/heating.

Econo Cool
Gives you up to 20% in energy efficiency by raising the temperature 2 degrees.
How? Adjusted airflow means you can’t even feel the difference.

Wired remote

wired-remote-ductless-slpit-300x298Multi-Language Display
Home comfort now comes in eight different languages.
(English, French, Italian, Chinese, Spanish, German, Russian, Japanese)

Limiting the Set Temperature Range
Set upper and lower temperature limits to prevent excessive heating or cooling.

Auto Off Timer
Pre-set times from 30 minutes to 4 hours – in 30-minute increments.

Controller Lock
Disables all buttons or operations on the remote control except for the On/Off button.

Weekly Timer
Up to eight different temperature settings can be programmed for each day.

Displays error codes to notify you when the system malfunctions for easy diagnostics and servicing.

Optional accessories

RedLINKTM wireless controllers


MHK1 wireless remote controller kit*

MRCH1 Wireless Wall-Mounted
Remote Controllers
MIFH1 Wireless Receiver and Cable

Wireless remote controller

• Backlit, easy-to-read display
• Dual setpoint control with system changeover
• Enabled with RedLINK™ reliability
• Installs anywhere with simple wall-mounted design
• Compatible with MCCH1 Portable Central Controller
and MOS1 Outside Air Sensor
• Requires wireless interface (included in kit)

Function Description
On/Off On/Off operation for a single indoor unit
Operation Mode Cool / Drying / Auto / Heat / Fan operation modes dependent on connected system
Temperature Setting Set temperature range limits (dependent on the connected system):

  • Cooling from 50°F to 99°F
  • Heating from 40°F to 90°F
  • Auto from 50°F to 90°F with dual temperature setting
System Changeover Dead-Band Value 2-8°F
Schedule Operation 5-2, 5-1-1
Optimal Start Eliminates the guesswork when setting your schedule. Allows the remote controller to “learn” how long your Split-Zoning System takes to reach programmed temperature setting, so the temperature is reached at the time you set
Fan Speed Setting Hi/Mid-2/Mid-1/Low/Auto Available fan speed settings dependent on connected system
Airflow Direction Setting Airflow angles: 100° – 80° – 60° – 40° and oscillate available airflow direction settings dependent on connected system Permit/Prohibit Function
Space Temperature Displays the measured space temperature
Error Indication Displays error code
Fan Speed Setting Hi/Mid-2/Mid-1/Low/Auto Available fan speed settings dependent on connected system
Display Outside Temperature and Humidity Requires optional MOS1 Outside Air Sensor
Dimensions – (W x D x H) Remote Controller: 5-3/16” x 1-1/2” x 3-9/16” Receiver: 3-1/4” x 1-5/16” x 6-7/16” Operating Ambient Temperature
Operating Ambient Humidity Remote Controller: 5% – 90% RH (non-condensing) Receiver: 5% – 90% RH (non-condensing) Power Supply
Display Outside Temperature and Humidity Requires optional MOS1 Outside Air Sensor
Dimensions – (W x D x H) Remote Controller: 5-3/16” x 1-1/2” x 3-9/16” Receiver: 3-1/4” x 1-5/16” x 6-7/16” Operating Ambient Temperature


MCCH1 portable central controller*mccha-portable

  • Controls up to 16 RedLINK™ devices
  • Requires MHK1 per indoor unit
  • Monitor and control On/Off, Mode and Set Temperature
  • Schedule Overrides
  • Easy-to-read backlit display
  • Does not interfere with other wireless devices
  • Displays outside air temperature and humidity when used with MOS1


MOS1 outdoor air sensor*

  • mos1-outdoorMonitors outside air temperature and humidity
  • Displays on MHK1 Remote Controller and MCCH1 Portable Central Controller
  • Installs wirelessly
  • Battery life of up to 5 years

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