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Mitsubishi 12,000 BTU HX-Series 20 SEER2 Single Zone Wall Mount Mini Split Heat Pump System – R454B | 230V

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Mitsubishi 12,000 BTU HX-Series 20 SEER2 Single Zone Wall Mount Mini Split Heat Pump System – R454B | 230V - MUZ-HX12NL / MSZ-HX12NL Mitsubishi 12,000 BTU HX-Series 20 SEER2 Single Zone Wall Mount Mini Split Heat Pump System – R454B | 230V - MUZ-HX12NL / MSZ-HX12NL 13 Mitsubishi 12,000 BTU HX-Series 20 SEER2 Single Zone Wall Mount Mini Split Heat Pump System – R454B | 230V - MUZ-HX12NL / MSZ-HX12NL Mitsubishi 12,000 BTU HX-Series 20 SEER2 Single Zone Wall Mount Mini Split Heat Pump System – R454B | 230V - MUZ-HX12NL / MSZ-HX12NL Mitsubishi 12,000 BTU HX-Series 20 SEER2 Single Zone Wall Mount Mini Split Heat Pump System – R454B | 230V - MUZ-HX12NL / MSZ-HX12NL Mitsubishi 12,000 BTU HX-Series 20 SEER2 Single Zone Wall Mount Mini Split Heat Pump System – R454B | 230V - MUZ-HX12NL / MSZ-HX12NL Mitsubishi 12,000 BTU HX-Series 20 SEER2 Single Zone Wall Mount Mini Split Heat Pump System – R454B | 230V - MUZ-HX12NL / MSZ-HX12NL Mitsubishi 12,000 BTU HX-Series 20 SEER2 Single Zone Wall Mount Mini Split Heat Pump System – R454B | 230V - MUZ-HX12NL / MSZ-HX12NL Mitsubishi 12,000 BTU HX-Series 20 SEER2 Single Zone Wall Mount Mini Split Heat Pump System – R454B | 230V - MUZ-HX12NL / MSZ-HX12NL MUZ-HX12NL MUZ-HX12NL MUZ-HX12NL MSZ-HX12NL MSZ-HX12NL 201813 / CW-144-15 366390 / CW-144-25 216740 / CW-144-30 366395 / CW-144-35 366396 / CW-144-50 87762 / EL1838-3 87762 / EL1838-3 87762 / EL1838-3 HW-600 MSK001 MHK2 MHK2 MHK2 MHK2

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Mitsubishi

In stock

Model

MUZ-HX12NL / MSZ-HX12NL

ID

199124

Was $2,405.63
Your Low Price $2,116.95
 
Customize Mitsubishi 12,000 BTU HX-Series 20 SEER2 Single Zone Wall Mount Mini Split Heat Pump System – R454B | 230V
12,000 BTU Mitsubishi Single Zone Condenser - R454B
12,000 BTU Mitsubishi Single Zone Condenser - R454B
12,000 BTU Mitsubishi Single Zone Condenser - R454B   + $1,329.90
12,000 BTU Mitsubishi HX-Series Wall Mount Mini Split Air Handler - R454B
12,000 BTU Mitsubishi HX-Series Wall Mount Mini Split Air Handler - R454B
12,000 BTU Mitsubishi HX-Series Wall Mount Mini Split Air Handler - R454B   + $787.05
15 feet - 1/4" and 3/8" Line Set & Control Wire
Equipment Pad and Risers Kit
Installation Kit for Condensers
Mitsubishi MHK2 Wireless Remote Controller
13

$2,116.95

Get Premium Comfort for up to 35% Less.

Efficient mini split heat pump system designed to deliver quiet year-round comfort for medium spaces with dependable performance.

The Mitsubishi HX-Series 12,000 BTU single-zone mini split heat pump system provides reliable heating and cooling for medium spaces, including bedrooms, offices, and living areas. With inverter-driven technology and a wall-mounted indoor unit, it delivers dependable comfort, efficient operation, and a clean, space-saving design.

Mitsubishi HX-Series Single Zone Wall Mount Features and Benefits

  • 20 SEER2 Efficiency – Provides efficient heating and cooling performance with reliable energy savings.
  • Year-Round Comfort – Delivers dependable heating and cooling from one complete system.
  • Wall-Mounted Design – Saves floor space with a sleek, modern indoor unit.
  • R454B Refrigerant – Uses a lower-GWP refrigerant for a more eco-conscious footprint.

Quiet Comfort

The indoor and outdoor components are engineered for low-noise operation, making this system a great choice for bedrooms, offices, and everyday living spaces.

Compact Wall-Mounted Design

The slim indoor unit provides flexible installation while saving valuable floor space and blending seamlessly into a variety of room styles.

Right-Sized Performance

With 12,000 BTU of capacity, this system is an excellent choice for medium spaces requiring efficient and reliable year-round climate control.

What’s Included

  • Mitsubishi Single Zone Mini Split Heat Pump Condenser — MUZ-HX12NL, 12,000 BTU
  • Mitsubishi 12,000 BTU Wall-Mounted Mini Split Indoor Unit — MSZ-HX12NL
  • Wireless remote control
  • Owner's Manual, Guides, and Other Documents

Recommended Accessories

  • 17" Wall Mount Bracket for Mini Split Systems – HW-600
  • Mitsubishi Wireless Remote Controller– MHK2
  • E Lite Equipment Pad and Risers Kit- 87762 / EL1838-3
  • Installation Kit – MSK001
    • • 3/4" x 6' Electrical Whip – SKU: 84138 • 60A Non-Fused Disconnect – SKU: 83335 • Surge Protector – SKU: ICM517 • CPS Charging Adapter – SKU: 87-AD87 • Telescoping Wall Sleeve – SKU: NFP-75
  • Additional line set options
    • • 15 ft – 201813 / CW-144-15 • 25 ft – 366390 / CW-144-25 • 30 ft – 216740 / CW-144-30 • 35 ft – 366395 / CW-144-35 • 50 ft – 366396 / CW-144-50

Warranty

10-year limited warranty with online registration.

More Information
Mitsubishi 12,000 BTU HX-Series Single Zone Mini Split Heat Pump Condenser R454B | 230V
FeatureSpec
SKUMUZ-HX12NL
Refrigerant Charge2.02 lbs (Pre-charged for 25ft line set)
Weight (in lbs)81
Brand/ManufacturerMitsubishi
ReplacesMUZ-HM12NA-U2
UPC605468208830
Cooling BTU12,000 BTU
Heating BTU12,200 BTU
Decibel Level (dBA)51 dBA
Energy StarYes
RefrigerantR454B
HSPF210
SEER2 (Efficiency)20
EER212.5
Liquid Line1/4"
Suction Line3/8"
Electrical230V | 1 Phase | 60Hz
Max Breaker Size28 Amps
BTU/Tonnage12,000 BTU/1 Ton
Min/Max Outdoor Temp for Heating-5°F to 75°F
Min/Max Outdoor Temp for Cooling14°F to 115°F
Zone CompatibilitySingle Zone
Height21.63"
Width31.5"
Depth11.25"
Warranty10 Years with Online Registration
Resources You will need Adobe® Acrobat® Reader to view PDF documents.
Safety InformationPROPOSITION 65 WARNING
Mitsubishi 12,000 BTU HX-Series Single Zone Wall Mounted Mini Split Air Handler R454B | 230V
FeatureSpec
SKUMSZ-HX12NL
Weight (in lbs)20
Brand/ManufacturerMitsubishi
ReplacesMSZ-HM12NA-U2
UPC605468288009
Cooling BTU12,000 BTU
Heating BTU12,000 BTU
Maximum CFM448 Turbo / 353 Hi / 256 Med / 172 Lo
Decibel Level (dBA)45 dBA
RefrigerantR454B
Liquid Line1/4"
Suction Line3/8"
Electrical208/230V | 1 Phase | 60Hz
BTU/Tonnage12,000 BTU/1 Ton
Mini Split TypeWall Mounted
Zone CompatibilitySingle Zone
Height11.03"
Width33.00"
Depth9.25"
Warranty10 Year Compressor / 7 Years Parts Warranty with Online Registration
Resources You will need Adobe® Acrobat® Reader to view PDF documents.
Safety InformationPROPOSITION 65 WARNING
Installation Kit for Condensers - Accessory Set
FeatureSpec
SKUMSK001
Weight (in lbs)15
Brand/ManufacturerOnline Supply
UPCna
Resources You will need Adobe® Acrobat® Reader to view PDF documents.
Safety InformationPROPOSITION 65 WARNING
E Lite Equipment Pad and Risers Kit 18" x 38" x 3"
FeatureSpec
SKU87762 / EL1838-3
Weight (in lbs)25
Brand/ManufacturerOnline Supply
UPCna
Height3"
Width18"
Depth38"
Safety InformationPROPOSITION 65 WARNING
Refrigerant Line Set with 1/4" and 3/8" Line Ends & Control Wire - 50 feet
FeatureSpec
SKU366396 / CW-144-50
Weight (in lbs)45
Brand/ManufacturerOnline Supply
UPCna
Length50'
Height1/2"
Width1/2"
Safety InformationPROPOSITION 65 WARNING
Refrigerant Line Set with 1/4" and 3/8" Line Ends & Control Wire - 35 feet
FeatureSpec
SKU366395 / CW-144-35
Weight (in lbs)35
Brand/ManufacturerOnline Supply
UPCna
Length35'
Height1/2"
Width1/2"
Safety InformationPROPOSITION 65 WARNING
Refrigerant Line Set with 1/4" and 3/8" Line Ends & Control Wire - 30 feet
FeatureSpec
SKU216740 / CW-144-30
Weight (in lbs)30
Brand/ManufacturerOnline Supply
UPCna
Length30'
Height1/2"
Width1/2"
Safety InformationPROPOSITION 65 WARNING
Refrigerant Line Set with 1/4" and 3/8" Line Ends & Control Wire - 25 feet
FeatureSpec
SKU366390 / CW-144-25
Weight (in lbs)25
Brand/ManufacturerOnline Supply
UPCna
Length25'
Height1/2"
Width1/2"
Safety InformationPROPOSITION 65 WARNING
Refrigerant Line Set with 1/4" and 3/8" Line Ends & Control Wire - 15 feet
FeatureSpec
SKU201813 / CW-144-15
Weight (in lbs)15
Brand/ManufacturerOnline Supply
UPCna
Liquid Line1/4"
Suction Line3/8"
Length15'
Height1/2"
Width1/2"
Safety InformationPROPOSITION 65 WARNING
17" Wall Mount Bracket for Mini Split Systems
FeatureSpec
SKUHW-600
Weight (in lbs)9.2
Brand/ManufacturerOnline Supply
Length17"
Height20"
Width6"
Resources You will need Adobe® Acrobat® Reader to view PDF documents.
Safety InformationPROPOSITION 65 WARNING
Mitsubishi MHK2 Wireless Remote Controller
FeatureSpec
SKUMHK2
Weight (in lbs)2
Brand/ManufacturerMitsubishi
ReplacesMHK3
UPC85267267533
LengthCable:39-23/64"
HeightThermostat: 4-5/64” | Receiver: 3-3/32”
WidthThermostat: 4-5/64” | Receiver: 1-3/4”
DepthThermostat: 1-1/16" | Receiver: 39/64”
Warranty5 Years Parts Warranty
Resources You will need Adobe® Acrobat® Reader to view PDF documents.
Safety InformationPROPOSITION 65 WARNING
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Choosing the Right Mitsubishi Mini Split System
Mitsubishi mini split systems have been growing in popularity among homeowners who seek efficient and effective cooling in zones or individual areas of their home. Since each indoor unit (called an air handler) works separately, ductless mini split units can offer better temperature control for your home whether you choose a single- or multi-zone system. Both zone designs let each room have a different temperature, so the family no longer needs to fight over the AC controls. Ductless systems also have the advantage of not requiring any ductwork, giving you flexibility all the while saving money and reducing installation time significantly.
February 8, 2018
Why Choose Mitsubishi Mini Splits?
Why Choose Mitsubishi Mini Splits?

Mitsubishi mini split air conditioners and heat pumps provide exceptional comfort, energy efficiency, and ultra-quiet performance in any climate. Engineered for reliability and precision, these systems offer year-round heating and cooling while reducing energy costs and enhancing indoor air quality.

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