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Mitsubishi Electric M Series MIT12KSINGLE - 12,000 BTU Single Zone Mini Split System
Mitsubishi Electric M Series MIT12KSINGLE - 12,000 BTU Single Zone Mini Split System
Mitsubishi Electric M Series MIT12KSINGLE - 12,000 BTU Single Zone Wall Mounted Indoor Unit
Mitsubishi Electric M Series MIT12KSINGLE - 12,000 BTU Single Zone Wall Mounted Indoor Unit
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Mitsubishi Electric M Series MIT12KSINGLE
Authorized
Dealer

Mitsubishi Electric M Series
MIT12KSINGLE
12,000 BTU Single Zone Mini Split System with Heat Pump, Inverter Driven Compressor, 6 Fan Speeds, Wireless Remote Control, Kumo Cloud, Quiet Operation, Blue Fin Anti Corrosion, R-454B Refrigerant and Price Includes Delivery / Installation and All Parts

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Limited quantity available
Price Includes Delivery & Installation
included items
12,000 BTU Single Zone Wall Mounted Outdoor Ductless Heat Pump (MUZGX12NL)
• Blue Fin Coating, Inverter Compressor, Quiet Operation
12,000 BTU Single Zone Wall Mounted Indoor Unit (MSZGX12NL)
• 12,000 BTU Heat Pump, Built In Wifi, Dual Barrier Coating
$5,000.00
OR
In stock
In Stock Items labeled IN STOCK will ship within 2 business days from our East Coast warehouse. Actual delivery times will vary based on your location. If you are ordering multiple items and not all items are IN STOCK, the order will ship when all items are available unless you select the SPLIT SHIP option in checkout. IN STOCK may not apply to multiple quantities of the same product.
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Product Information
Brand: Mitsubishi Electric
Model: MUZGX12NL
Dimensions & Weights
Width: 31 1/12 Inch
Depth: 11 1/4 Inch
Height: 21 5/8 Inch
Net Weight: 77 Lbs.
Shipping Weight: 84 Lbs.
Capacity
BTU Class: 12,000 BTU
Heating Capacity: 12,000 BTU
Cooling Capacity: 12,000 BTU
Min Connectable Capacity: 1,300 BTU
Max Connectable Capacity: 14,000 BTU
General
AC System Type: Mini Split
Component Type: Outdoor Unit
Operation: Cooling with Heat Pump
Min No. of Connectible Indoor Units: 1
Max No. of Connectible Indoor Units: 1
Electrical Data
Power Source V / Hz / Ø: (208/230/60/1)
Minimum Ampacity (Amps): 12 Amps
Max. TD Fuse/Breaker: 21 Amps
Power Input Cooling - Rated (Watts): 900 Watts
Power Input Cooling - Max. (Watts): 1,490 Watts
Power Input Heating - Rated (Watts): 1,100 Watts
Power Input Heating - Max. (Watts): 1,780 Watts
Rated Amps: 1 Amps
Performance
Compressor Noise Level - Cooling (dB): 49 dB
Compressor Noise Level - Heating (dB): 51 dB
Energy Star Certified: Yes
Piping Connections
Power and Communication Cable - No.: 4
Power and Communication Cable - AWG: 14
Liquid Line Outer Diameter: 1/4 Inch
Suction Line Outer Diameter: 3/8 Inch
Drain Line Outer Diameter: 5/8 Inch
Refrigeration System
Refrigerant Type: R-454B
Compressor Type: Twin Rotary
Refrigerant Charge: 0.22 Ft.
Piping Length (No Additional Refrigerant): 25 Ft.
Max. Line Length - Each: 65 Ft.
Max. Line Length - Total: 65 Ft.
Max. Height Diff. btwn. Indoor and Outdoor Units: 40 Ft.
Outside Temperature Range for Cooling - Min.: 14 °F
Outside Temperature Range for Cooling - Max.: 115 °F
Outside Temperature Range for Heating - Min.: -5 °F
Outside Temperature Range for Heating - Max.: 75 °F
Features
Inverter (Variable speed compressor): Yes
Low Ambient Operating Threshold (F°): -10
Corrosion Protection: Yes
No. of Fan Speeds: 5
WiFi Connected: Yes
Technical Details
ADA Compliant: No
Voltage: 230/208 Volts
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Description

12,000 BTU Single Zone Wall Mounted Indoor Unit
MUZ-GX12NL is a 12,000 BTU wall-mounted outdoor ductless heat pump designed for Mitsubishi Electric GX Series single-zone systems. Using environmentally friendly R-454B refrigerant and advanced inverter technology, it delivers efficient year-round heating and cooling, quiet operation, and reliable temperature control for residential applications. It is engineered to pair with compatible Mitsubishi indoor units for high-performance comfort and energy savings.

Specifications

Cooling at 95F¹
Maximum Capacity Btu/h:  
14,000
Rated Capacity Btu/h:  
12,000
Minimum Capacity Btu/h:  
1,300
Maximum Power Input W:  
1,490
Rated Power Input W:  
900
Moisture Removal Pints/h:  
2.5
Sensible Heat Factor-:  
0.77
Power Factor [208V / 230V] %:  
93 / 93
Heating at 47F²
Maximum Capacity Btu/h:  
18,100
Rated Capacity Btu/h:  
14,400
Minimum Capacity Btu/h:  
1,500
Maximum Power Input W:  
1,780
Rated Power Input W:  
1,100
Power Factor [208V / 230V] %:  
95 / 95
Heating at 17F³
Maximum Capacity Btu/h:  
12,000
Rated Capacity Btu/h:  
9,000
Maximum Power Input W:  
1,670
Rated Power Input W:  
1,000
Heating at 5F⁴
Maximum Capacity Btu/h:  
10,100
Maximum Power Input W:  
1,640
Heating at -5F⁶ Maximum Capacity Btu/h:  
7,700
Heating at -10F⁷ Maximum Capacity Btu/h:  
6,780
Efficiency
SEER2:  
25.6
EER21:  
13.35
HSPF2 [IV]:  
10.7
COP at 47°F2:  
3.84
COP at 17°F at Maximum Capacity³:  
2.1
COP at 5°F at Maximum Capacity⁴:  
1.8
COP at -5°F at Maximum Capacity⁶:  
1.4
COP at -10°F at Maximum Capacity⁷:  
1.24
ENERGY STAR® Certified:  
Yes
Electrical
Voltage, Phase, Frequency V AC / V AC, ø, Hz:  
208 / 230, 1, 60
Guaranteed Voltage Range V AC:  
187 - 253
Voltage: Indoor - Outdoor, S1-S2 V AC:  
230
Voltage: Indoor - Outdoor, S2-S3 V DC:  
24
Short-circuit Current Rating [SCCR] kA:  
5
Recommended Fuse/Breaker Size (Outdoor) A:  
15
Recommended Wire Size [Indoor - Outdoor] AWG:  
14
IDU Operating Temp. Range
Cooling Intake Air Temp [Maximum / Minimum] °FDB, °FWB / °FDB, °FWB:  
90, 73 / 67, 57
Heating Intake Air Temp [Maximum / Minimum] °FDB:  
80 / 70
Outdoor Unit
MCA A:  
12
MOCP A:  
21
Fan Motor Full Load Amperage A:  
0.71
Fan Motor Output W:  
55
Airflow Rate Cooling CFM:  
1,152
Airflow Rate Heating CFM:  
1,139
Defrost Method:  
Reverse Cycle
Coating on Heat Exchanger (Bluefin, Sea Coast):  
Yes, Yes
Sound Pressure Level, Cooling1 dB (A):  
49
Sound Pressure Level, Heating2 dB (A):  
51
Compressor Type:  
Twin Rotary
Compressor Model:  
SRB092FQFMC
Compressor Oil [Type // Charge] Type // oz:  
RM68EH // 11.8
External Finish Color:  
Munsell 3Y 7.8/1.1
Unit Dimensions (W x D x H) inch x inch x inch:  
31-1/2 x 11-1/4 x 21-5/8
[mm x mm x mm]:  
[800 x 285 x 550]
Package Dimensions (W x D x H) inch x inch x inch:  
37 x 15 x 24-1/2
[mm x mm x mm]:  
[940 x 380 x 630]
Unit Weight lbs [kg]:  
77 [34.60]
Package Weight lbs [kg]:  
84 [38]
ODU Operating Temp. Range
Cooling Intake Air Temp [Maximum / Minimum*] °FDB:  
115 / 14
Cooling Thermal Lock-out / Re-start Temperatures** °FDB:  
-1 / 3
Heating Intake Air Temp [Maximum / Minimum] °FDB, °FWB / °FDB, °FWB:  
75, 65 / -5, -6
Heating Thermal Lock-out / Re-start Temperatures** °FDB:  
-14 / -4
Refrigerant
Type:  
R454B
Pre-Charged Refrigerant Amount lbs, oz:  
2, 0
Maximum Pre-Charged Piping Length ft [m]:  
25 [7.50]
Additional Refrigerant Charge Per Additional Piping Length oz/f:  
0.22
Piping
Gas Pipe Size O.D. [Flared] inch [mm]:  
3/8 [9.52]
Liquid Pipe Size O.D. [Flared] inch [mm]:  
1/4 [6.35]
Maximum Piping Length ft [m]:  
65 [20]
Maximum Number of Bends:  
10

Features

Blue Fin Coating
  • An anti-corrosion treatment applied to the aluminum fins of the heat exchanger of the outdoor unit to protect against corrosion caused by salt, sulfur, and other airborne contaminants, especially in coastal and industrial areas.
Inverter Compressor
  • An inverter-driven compressor generates the precise capacity needed to maintain a temperature set point.
Quiet Operation
  • Both the indoor and outdoor units operate quietly, with outdoor units as quiet as a conversation.
Dual Barrier Coating
  • The patented coating reduces contaminants like dust and smoke, ensuring optimal airflow and easier maintenance.
Smart Dry Mode
  • Improves humidity control without excessive cooling.
California residents see Prop 65 WARNINGS

Reviews

Manuals & Guides

Specification Sheet
Product Information
Brand: Mitsubishi Electric
Model: MSZGX12NL
Dimensions & Weights
Width: 31 13/32 Inch
Depth: 9 21/32 Inch
Height: 11 25/32 Inch
Net Weight: 23 Lbs.
Shipping Weight: 27 Lbs.
Capacity
BTU Class: 12,000 BTU
Heating Capacity: 14,400 BTU
Cooling Capacity: 12,000 BTU
General
AC System Type: Mini Split
Component Type: Indoor Unit
Operation: Cooling with Heat Pump
Placement Type: Wall Mount
Wireless Remote Control(s) Included: Included
Wired Remote Control(s) Included: Optional
Thermostat Range - Cooling (F°): 67°F - 90°F DB
Electrical Data
Power Source V / Hz / Ø: (208/230/60/1)
Rated Amps: 1 Amps
Performance
Motor: Brushless Direct Current
Motor Drive: Direct
Energy Star Certified: Yes
Moisture Removal (Pts/hr): 2.5 Pts./Hr.
Airflow Rate Quiet (CFM): 151 CFM
Airflow Rate Low (CFM): 172 CFM
Airflow Rate Medium (CFM): 256 CFM
Airflow Rate High (CFM): 448 CFM
Operating Sound Level - Quiet (dB): 19 dB
Operating Sound Level - Low (dB): 22 dB
Operating Sound Level - Medium (dB): 30 dB
Operating Sound Level - High (dB): 45 dB
Piping Connections
Power and Communication Cable - AWG: 14
Liquid Line Outer Diameter: 1/4 Inch
Suction Line Outer Diameter: 3/8 Inch
Drain Line Outer Diameter: 5/8 Inch
Refrigeration System
Refrigerant Type: R-454B
Refrigerant Connection Type: Flare
Piping Length (No Additional Refrigerant): 25 Ft.
Max. Line Length - Total: 65 Ft.
Features
Control Lock Function (Concealed Duct Only): No
Human Detection Technology: No
Room-Freeze Protection: Yes
Filter Clean Notification: Yes
Hot Start Heating System (Heat Pumps Only): Yes
Program Timer: Yes
Manual Power Switch: Yes
Defrost/Deicing: Yes
Air Filter: Yes
Filters Washable?: Yes
Filters Anti-microbial?: Yes
Restart Delay: Yes
Sleep Mode: Yes
Self-diagnosis: Yes
Condensate Sensor Connection: No
Soft Start: Yes
Quiet/Sleep Mode: Yes
Self-Cleaning Indoor Coil: Yes
Built-in Drain Pump (Indoor Unit): No
Hidden Display: Yes
Surge Cool/Heat: Yes
Auto Operation: Yes
Auto Restart on Power Failure: Yes
Auto-changeover: Yes
Automatic Louver Adjustment: Yes
Dehumidifying Mode: Yes
No. of Fan Speeds: 5
WiFi Connected: Yes
Technical Details
ADA Compliant: No
Voltage: 230/208 Volts
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Description

12,000 BTU Single Zone Wall Mounted Indoor Unit with 12,000 BTU Heat Pump
MSZ-GX12NL is a 12,000 BTU/h ductless indoor air handler designed for Mitsubishi Electric’s GX Series heat pump systems. It delivers efficient cooling and heating with quiet operation, inverter-driven airflow control, and advanced comfort features such as Econo Cool, multiple fan speeds, and optional Wi-Fi control. Built for residential single-zone or multi-zone setups, it pairs with R-454B outdoor units and provides reliable, energy-efficient climate control for medium-sized rooms.

Specifications

Cooling at 95F¹
Maximum Capacity Btu/h:  
14,000
Rated Capacity Btu/h:  
12,000
Minimum Capacity Btu/h:  
1,300
Maximum Power Input W:  
1,490
Rated Power Input W:  
900
Moisture Removal Pints/h:  
2.5
Sensible Heat Factor-:  
0.77
Power Factor [208V / 230V] %:  
93 / 93
Heating at 47F²
Maximum Capacity Btu/h:  
18,100
Rated Capacity Btu/h:  
14,400
Minimum Capacity Btu/h:  
1,500
Maximum Power Input W:  
1,780
Rated Power Input W:  
1,100
Power Factor [208V / 230V] %:  
95 / 95
Heating at 17F³
Maximum Capacity Btu/h:  
12,000
Rated Capacity Btu/h:  
9,000
Maximum Power Input W:  
1,670
Rated Power Input W:  
1,000
Heating at 5F⁴
Maximum Capacity Btu/h:  
10,100
Maximum Power Input W:  
1,640
Heating at -5F⁶ Maximum Capacity Btu/h:  
7,700
Heating at -10F⁷ Maximum Capacity Btu/h:  
6,780
Efficiency
SEER2:  
25.6
EER21:  
13.35
HSPF2 [IV]:  
10.7
COP at 47°F2:  
3.84
COP at 17°F at Maximum Capacity³:  
2.1
COP at 5°F at Maximum Capacity⁴:  
1.8
COP at -5°F at Maximum Capacity⁶:  
1.4
COP at -10°F at Maximum Capacity⁷:  
1.24
ENERGY STAR® Certified:  
Yes
Electrical
Voltage, Phase, Frequency V AC / V AC, ø, Hz:  
208 / 230, 1, 60
Guaranteed Voltage Range V AC:  
187 - 253
Voltage: Indoor - Outdoor, S1-S2 V AC:  
230
Voltage: Indoor - Outdoor, S2-S3 V DC:  
24
Short-circuit Current Rating [SCCR] kA:  
5
Recommended Fuse/Breaker Size (Outdoor) A:  
15
Recommended Wire Size [Indoor - Outdoor] AWG:  
14
Indoor Unit
MCA A:  
1
Fan Motor Output W:  
30
Airflow Rate at Cooling, Dry CFM:  
151, 172, 256, 353, 448
Airflow Rate at Cooling, Wet CFM:  
136, 154, 230, 318, 403
Airflow Rate at Heating, Dry CFM:  
151, 172, 256, 353, 448
Sound Pressure Level [Cooling] dB (A):  
19, 22, 30, 37, 45
Sound Pressure Level [Heating] dB (A):  
19, 22, 30, 37, 43
Drain Pipe Size O.D. inch [mm]:  
5/8 [15.88]
Dual Barrier Coating on Heat Exchanger:  
Yes
External Finish Color:  
Munsell 0.7PB 9.2/0.4
Unit Dimensions (W x D x H) inch x inch x inch:  
31-13/32 x 9-21/32 x 11-25/32
[mm x mm x mm]:  
[798 x 245 x 299]
Package Dimensions (W x D x H) inch x inch x inch:  
34-1/4 x 14-1/4 x 12-3/4
[mm x mm x mm]:  
[870 x 360 x 320]
Unit Weight lbs [kg]:  
23 [10.40]
Package Weight lbs [kg]:  
27 [12]
Fan Motor Type:  
DC Motor
IDU Operating Temp. Range
Cooling Intake Air Temp [Maximum / Minimum] °FDB, °FWB / °FDB, °FWB:  
90, 73 / 67, 57
Heating Intake Air Temp [Maximum / Minimum] °FDB:  
80 / 70
ODU Operating Temp. Range
Cooling Intake Air Temp [Maximum / Minimum*] °FDB:  
115 / 14
Cooling Thermal Lock-out / Re-start Temperatures** °FDB:  
-1 / 3
Heating Intake Air Temp [Maximum / Minimum] °FDB, °FWB / °FDB, °FWB:  
75, 65 / -5, -6
Heating Thermal Lock-out / Re-start Temperatures** °FDB:  
-14 / -4
Refrigerant
Type:  
R454B
Pre-Charged Refrigerant Amount lbs, oz:  
2, 0
Maximum Pre-Charged Piping Length ft [m]:  
25 [7.50]
Additional Refrigerant Charge Per Additional Piping Length oz/f:  
0.22
Piping
Gas Pipe Size O.D. [Flared] inch [mm]:  
3/8 [9.52]
Liquid Pipe Size O.D. [Flared] inch [mm]:  
1/4 [6.35]
Maximum Piping Length ft [m]:  
65 [20]
Maximum Number of Bends:  
10

Features

12,000 BTU Heat Pump
  • Provides efficient cooling and heating performance for year-round comfort in small to medium-sized spaces while maintaining energy-efficient operation.
Built-In Wi-Fi
  • Enables convenient remote control and monitoring of the system through a compatible smartphone app, allowing users to adjust settings from virtually anywhere.
Dual Barrier Coating
  • Helps prevent dust, dirt, and oily contaminants from accumulating on internal components, improving efficiency and reducing maintenance requirements.
Electrostatic Enzyme Filter (Built-In)
  • Electrostatic Enzyme filter (built-in) that is charged with static electricity and designed to attract and filter charged particles which can include airborne non-living particulates. and Microparticle filter (optional) that removes non-living particulate
Econo Cool
  • Optimizes airflow and temperature settings to reduce energy consumption while maintaining a comfortable indoor environment.
Multiple Fan Speed Options
  • Offers multiple fan speed settings to help customize airflow and comfort levels based on room conditions and personal preferences.
Powerful Mode
  • Temporarily drops or raises the set point and fan speed in order to quickly bring the room to the desired temperature.
California residents see Prop 65 WARNINGS

Reviews

Manuals & Guides

Specification Sheet
In Stock
Items labeled In Stock will ship within 2 business days from our East Coast warehouse. Actual delivery times will vary based on your location. If you are ordering multiple items and not all items qualify for In Stock, the order will ship when all items are available to ship. In Stock may not apply to multiple quantities of the same product.
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