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Mitsubishi 12,000 BTU Hyper Heat 17.2 SEER2 Single Zone Concealed Duct Mini Split Heat Pump System - R454B | 208/230V

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Model

SUZ-AA12NLHZ / SEZ-AD12NL

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216064

Was $4,530.94
Your Low Price $3,987.23
 
Customize Mitsubishi 12,000 BTU Hyper Heat 17.2 SEER2 Single Zone Concealed Duct Mini Split Heat Pump System - R454B | 208/230V
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15 feet - 1/4" and 3/8" Line Set & Control Wire
Equipment Pad and Risers Kit
Installation Kit for Condensers
12,000 BTU Mitsubishi Hyper Heat 17.2 SEER2 Single Zone Concealed Duct Mini Split Heat Pump System - R454B | 208/230V - SUZ-AA12NLHZ / SEZ-AD12NL

$3,987.23

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 cold-climate concealed duct performance.

The Mitsubishi SEZ-AD-Series 12,000 BTU single-zone concealed duct Hyper Heat mini split system provides reliable heating and cooling for medium spaces. With a hidden ducted indoor unit and Hyper-Heating INVERTER® technology, it delivers dependable comfort, efficient operation, and a discreet installation solution ideal for living rooms, home offices, room additions, and converted spaces.

Mitsubishi SEZ-AD-Series Single Zone Concealed Duct Features and Benefits

  • 17.6 SEER2 Efficiency – Delivers strong energy savings with efficient heating and cooling performance.
  • Hyper-Heat Performance – Provides dependable heating performance in colder outdoor conditions.
  • Concealed Duct Design – Keeps equipment hidden for a cleaner, more finished appearance.
  • R454B Refrigerant – Uses a lower-GWP refrigerant for a more eco-conscious footprint.

Cold Climate Comfort

Hyper-Heating INVERTER® technology helps maintain reliable heating output in colder weather, supporting consistent comfort throughout winter.

Concealed Duct Design

The hidden indoor unit installs out of sight in ceilings, closets, or attic spaces while distributing conditioned air through ductwork for a clean traditional HVAC appearance.

Right-Sized Performance

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

What’s Included

  • Mitsubishi Single Zone Hyper Heat Mini Split Condenser — 12,000 BTU cooling / 12,000 BTU heating
  • Mitsubishi 12,000 BTU Concealed Duct Indoor Unit — SEZ-AD12NL
  • Owner's Manual, Guides, and Other Documents

Recommended Accessories

  • 17" Wall Mount Bracket for Mini Split Systems – HW-600
  • 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 KD-Series Concealed Duct Mini Split Air Handler R454B | 230V
FeatureSpec
SKUSEZ-AD12NL
Weight (in lbs)50
Brand/ManufacturerMitsubishi
ReplacesSEZ-KD12NA4R1.TH
UPC605468355497
Cooling BTU11,500 BTU
Heating BTU13,600 BTU
Maximum CFM388 Turbo / 300 Hi / 247 Med / 222 Lo
Decibel Level (dBA)33 dBA
RefrigerantR454B
Liquid Line1/4"
Suction Line3/8"
Electrical208/230V 1 Phase 60 Hz
BTU/Tonnage12,000 BTU/1 Ton
Mini Split TypeConcealed Duct
Zone CompatibilityMulti Zone
Height7.88"
Width39.00"
Depth27.56"
Warranty10 Year Compressor / 7 Years Parts Warranty with Online Registration

Resources
Safety InformationPROPOSITION 65 WARNING
Mitsubishi 12,000 BTU SEZ-AD-Series H2i Single Zone Mini Split Hyper Heat Pump Condenser R454B | 230V
FeatureSpec
SKUSUZ-AA12NLHZ
Refrigerant Charge3 lbs (Pre-charged for 25ft line set)
Weight (in lbs)115
AHRI Certificate Number215734915
Brand/ManufacturerMitsubishi
ReplacesSUZ-KA12NAHZ.TH
UPC605468315934
Additional InformationHeat Pump
Additional InformationMaximum Line Set Length: 100'
Cooling BTU12,000 BTU
Heating BTU15,000 BTU
Decibel Level (dBA)55 dBA
Electric HeatHeat Pump
Energy StarYes
RefrigerantR454B
CapacityDehumidification Rate: 1.2 pints/hr
HSPF210
SEER2 (Efficiency)17.2
EER213.9
Liquid Line1/4"
Suction Line3/8"
Electrical230V | 1 Phase | 60Hz
Max Breaker Size42 Amps
Min. Breaker Size25 Amps
BTU/Tonnage12,000 BTU/1 Ton
Min/Max Outdoor Temp for Heating−13 °F - 75 °F
Min/Max Outdoor Temp for Cooling14 °F - 115 °F
Zone CompatibilitySingle Zone
Ambient Temperature Range14 °F - 115 °F
Height34.63"
Width33.06"
Depth13"
Warranty10 Years with Online Registration
Resources You will need Adobe® Acrobat® Reader to view PDF documents.
Safety InformationPROPOSITION 65 WARNING
This product and many products on our site may contain a chemical know to the state of California to cause cancer or birth defects or other reproductive harm. For more information about Proposition 65 please Click Here.
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
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
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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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