Mitsubishi Heat Pump Review


The Mitsubishi heat pump is one of our favorite.

Why?

Mitsubishi uses ductless heat pump technology, also known as a mini split heat pump.  

Here are some of the reasons why Mitsubishi is such a "top of the line" heat pump manufacturer:

  • Inverter-driven compressors.  This allows the compressor to ramp up and ramp down as the cooling or heating need increases or decreases.  The benefit: fantastic energy efficiency.
  • Can operate with full heating performance down to 15 F!  Also the heat pump can start with instant heat down to -13 F!  Conventional heat pumps are typically useless when the temperature is less than 30 - 35 F.
  • The most efficiency Mitsubishi heat pump can operate as high as 26 SEER and 10.5 HSPF, one of the most efficient heat pumps in the industry.
  • Mitsubishi's iSee sensor uses infrared technology to do a 150 degree scan of the room to detect hot/cold spots in the room.  Once a hot/cold spot is detected, the airflow direction is adjusted to resolve this climate control problem.
  • 83% of the manufactured components contain recyclable materials.
  • This mini split heat pump allows for fantastic climate control.  Using one unit to cool or heat your home/office results in some rooms that are colder/warmer than other rooms.  Mini split heat pumps allow for better room-by-room control.
  • With the exception of the Horizontal Ducted indoor units, this ductless heat pump system eliminates ductwork . . .  a huge part of the installation cost!
  • An electronic expansion valve is included in the outdoor units for more precise temperature control and more efficient operation.

Mitsubishi offers two types of heat pump systems that we will be discussing, single zone and multi-zone:

  • The single zone heat pump contains one outdoor unit (above) that is matched to one indoor unit (below).

  • The multi zone heat pump offers one outdoor unit to as many as eight indoor units, depending on the model and size.


Most heat pumps and air conditioners use ductwork and airflow to heat or cool their homes.

However the mini split heat pump uses one or more small, indoor units to heat/cool a home or building on a room-by-room basis.

Often these indoor units are installed in various rooms throughout the house.  They are connected to the outdoor unit by means of copper piping carrying refrigerant.

Now for the important details related to the Mitsubishi heat pump....


Mitsubishi Heat Pump - Single Zone Units

Below is a brief summary of the cooling capacity, physical dimensions, and efficiency of each Mitsubishi heat pump, single zone model.

  • MSZ/MUZ-GE - General Efficiency Wall Mounted Indoor Unit
    Available in five sizes ranging from 14,000 - 33,200 Btu/hr
    Cooling Efficiency: 14.5 - 21 SEER
    Heating Efficiency: 8.2 - 10 HSPF
    Indoor Unit Dimensions (MSZ): 31.5 - 46.2 inches length, 9.2 - 11.7 inches width x  11.7 - 14.4 inches height
    Indoor Unit Weight: 22 - 40 lbs
    Outdoor Unit Dimensions (MUZ): 31.5 - 33.2 inches length, 11.3 - 13 inches width x  21.7 - 33.5 inches height
    Outdoor Unit Weight: 80 - 141 lbs
  • MSZ/MUZ-FE - Ultra Efficiency Wall Mounted Indoor Unit
    Available in five sizes ranging from 9,000 - 18,000 Btu/hr
    Cooling Efficiency: 20.5 - 26 SEER
    Heating Efficiency: 10 - 10.5 HSPF
    Indoor Unit Dimensions (MSZ): 31.4 - 43.4 inches length, 9.2 - 10.2 inches width x  11.7 - 12.9 inches height
    Indoor Unit Weight: 22 - 37 lbs
    Outdoor Unit Dimensions (MUZ): 31.5 - 33.2 inches length, 11.3 - 13 inches width x  21.7 - 34.7 inches height
    Outdoor Unit Weight: 66 - 119 lbs
  • SLZ/SUZ - Ceiling Recessed Cassette Type Indoor Unit
    Available in three sizes ranging from 8,400 - 15,000 Btu/hr
    Cooling Efficiency: 15 - 16 SEER
    Heating Efficiency: 9.6 HSPF
    Indoor Unit Dimensions (SLZ): 22.5 inches length, 22.5 inches width x  9.3 inches height
    Indoor Unit Weight: 36 lbs
    Outdoor Unit Dimensions (SUZ): 31.5 inches length, 11.3 inches width x  21.7 inches height
    Outdoor Unit Weight: 66 - 80 lbs
  • SEZ/SUZ - Horizontal Ducted Indoor Unit
    Available in four sizes ranging from 8,100 - 17,200 Btu/hr
    Cooling Efficiency: 15 - 17.5 SEER
    Heating Efficiency: 10 HSPF
    Indoor Unit Dimensions (SLZ): 31.2 - 46.9 inches length, 27.6 inches width x  7.9 inches height
    Indoor Unit Weight: 42 - 62 lbs
    Outdoor Unit Dimensions (SUZ): 31.5 - 33.2 inches length, 11.3 - 13 inches width x  21.6 - 33.5 inches height
    Outdoor Unit Weight: 66 - 119 lbs


Mitsubishi Heat Pump - Multi Zone Units

Now a summary of the cooling capacity, physical dimensions, and efficiency of each Mitsubishi heat pump, multi zone model.

  • MXZ - Mitsubishi Heat Pump Multi Unit
    Available in five sizes ranging from 18,000 - 48,000 Btu/hr
    Cooling Efficiency (non-ducted applications): 15 - 18 SEER
    Heating Efficiency (non-ducted applications)    : 8.7 - 10.5 HSPF
    Cooling Efficiency (ducted applications): 14.5 - 15.5 SEER
    Heating Efficiency (ducted applications): 8.5 - 9.5 HSPF
    Outdoor Unit Dimensions: 33.2 - 37.5 inches length, 12.7 - 14.2 inches width x  28 - 33.5 inches height
    Outdoor Unit Weight: 130 - 278 lbs
    The MXZ outdoor unit can be coupled in the following configurations.
         (Example - 2:1 signifies that up to 2 indoor units can be
         assigned to every outdoor unit)
         - MXZ-2B20 (18,000 Btu/hr) - 2:1 
         - MXZ-3B24 (22,000 Btu/hr) - 2:1,3:1
         - MXZ-3B30 (27,400 Btu/hr) - 2:1,3:1
         - MXZ-4B36 (34,400 Btu/hr) - 2:1,3:1,4:1
         - MXZ-4B48 (48,000 Btu/hr) - 2:1,3:1,4:1,5:1,6:1,7:1,8:1 
  • MSZ-FE - Ultra Efficiency Wall Mounted Indoor Unit
    Available in three sizes ranging from 9,000 - 18,000 Btu/hr
    Indoor Unit Dimensions: 31.4 - 33.4 inches length, 9.4 - 10.2 inches width x  11.7-12.9 inches height
    Indoor Unit Weight: 27 - 37 lbs
    Noise Level: 22 - 53 dBA
  • MSZ-GE - General Efficiency Wall Mounted Indoor Unit
    Available in six sizes ranging from 6,000 - 22,500 Btu/hr
    Indoor Unit Dimensions: 31.5 - 43.4 inches length, 9.2 - 9.4 inches width x  11.7-12.9 inches height
    Indoor Unit Weight: 27 - 37 lbs
    Noise Level: 19 - 53 dBA
  • SEZ-KD - Horizontal Ducted Indoor Unit (see picture above)
    Available in four sizes ranging from 8,100 - 17,200 Btu/hr
    Indoor Unit Dimensions: 31.2 - 46.9 inches length, 27.7 inches width x  7.9 inches height
    Indoor Unit Weight: 42 - 62 lbs
    Noise Level: 23 - 38 dBA
  • SLZ-KA - Ceiling Recessed (see picture above)
    Available in three sizes ranging from 8,400 - 15,000 Btu/hr
    Indoor Unit Dimensions: 22.5 inches length, 22.5 inches width x  9.3 inches height
    Indoor Unit Weight: 36 lbs
    Noise Level: 29- 40 dBA
  • MFZ-KA - Horizontal Floor Mounted
    Available in three sizes ranging from 9,000 - 18,000 Btu/hr
    Indoor Unit Dimensions: 27.7 inches length, 7.9 inches width x  23.7 inches height
    Indoor Unit Weight: 32 lbs
    Noise Level: 25 - 47 dBA

For more information on these models, visit the Mitsubishi heat pump official website.

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