Mitsubishi Concealed Duct 3-Zone System - 42,000 BTU Outdoor - 12k + 15k + 15k Indoor - 15.2 SEER2

Model: M3H42D12151500-B Item Number: 57137
Mitsubishi M3H42D12151500-B
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Mitsubishi M3H42D12151500-B
Mitsubishi M3H42D12151500-B
Mitsubishi M3H42D12151500-B
Mitsubishi M3H42D12151500-B
Mitsubishi M3H42D12151500-B
Mitsubishi M3H42D12151500-B
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Specification Highlights
    Condition
    New Learn More
    New
    This product is new and has never been used. It's in its original packaging, which has not been opened.
    Weight
    377 Pounds Learn More
    377 Pounds
    Total weight of the product and any included accessory/components. This total is not the shipping weight, as it does not include packing material, which may increase the overall shipping weight of this product.
    Product Category
    Mini Split Heat Pump System
Bundle Includes 8 items
  • product image
    (1) Mitsubishi - 42k BTU - M-Series Outdoor Condenser - For 2-5 Zones (MXZ-5C42NA4)
  • product image
    (2) Mitsubishi 14,100 BTU Horizontal Ducted Heat Pump Air Handler (SEZ-KD15NA4R1.TH)
  • product image
    (1) Mitsubishi 12,000 BTU Horizontal Ducted Heat Pump Air Handler (SEZ-KD12NA4R1.TH)
Outdoor Unit BTU/h
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Indoor Unit Sizes
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Indoor Unit Sizes
Mini split systems can have one or more indoor units connected to a single outdoor unit. Indoor Unit Size(s) specifies what indoor unit sizes are used in a system. For example (9k + 12k) means the system includes a 9k BTU unit and a 12k BTU unit.
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Installation Accessories
Features & Bundle Details
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Features & Bundle Details

Overview for Mitsubishi M3H42D12151500-B

For over 50 years, Mitsubishi has remained at the forefront of the mini split industry thanks to their dedication to providing efficient, user-friendly comfort solutions. This is a three zone mini split system designed to give you individual control over the temperature in multiple rooms. An efficient MXZ-5C42NA4 outdoor condenser, built with advanced technology, is combined with unobtrusive concealed duct SEZ-KD indoor units and three wireless remote controllers for the perfect marriage of convenience and comfort. With multiple operating modes and multiple fan speeds, this is a system that fits the needs of nearly any home.
  • Precision Temperature Control Technology
  • The MXZ-5C42NA4 outdoor condenser is equipped with inverter technology and an electronic linear expansion valve. These components improve temperature accuracy and system efficiency through precise adjustments of both compressor speed and refrigerant flow.
  • Hot-Start
  • Mitsubishi's hot-start technology prevents cold drafts by delaying fan operation until the heat exchanger has warmed up.
  • Dehumidification
  • When the indoor unit runs in dry mode, the coil's temperature stays just below the dew point of the return air, removing unwanted moisture. This improves your comfort and reduces both mold growth and the chance of property damage in the conditioned space.
  • Condensate Removal System
  • The included SEZ-KD compact duct indoor units contain an internal drain mechanism capable of lifting condensate 21-11/16". This simplifies installation and prevents condensate overflow, which can damage or destroy your property.
  • Advanced Remote Controller
  • The MHK1 remote controller kits have dual set point control and multiple scheduling options. They learn how quickly your zones are cooled and heated and adjust scheduled operations so that the zones are always the right temperature at the right time.
  • Inconspicuous Design
  • Installing a source of zoned comfort doesn't have to disrupt the visual layout of your space. With the concealed duct units, small air registers are the only evidence that a powerful and efficient mini split system is servicing your rooms.
  • Recommended line set sizes for indoor unit connectivity:
  • SEZ-KD12NA4R1.TH: 1/4" x 3/8" Line Set
  • SEZ-KD15NA4R1.TH: 1/4" x 1/2" Line Set (Qty 2)
  • Product Note
    This product requires the following accessories for installation:

    • Line Set - This double insulated tubing transfers refrigerant efficiently between your outdoor condenser and indoor units.
    • Drain Tubing - Drain tubing facilitates the reliable and effective removal of condensate from your system. It connects your indoor units to drain locations of your choosing. We recommend locally purchased PVC hard pipe for the condensate drain on cassette and concealed duct units.
    • Disconnect Box & Electrical Whip Kit - The Disconnect Box & Whip Kit provides a safe and simple way to connect your outdoor condenser to your fuse box.
    • Connecting Wire - This durable, insulated wire provides power to your indoor units from your outdoor condenser.
    • Base Pan Heater - The base pan heater prevents ice from building up on the outdoor unit. Excessive ice build will lead to performance issues and could damage your unit.
    • Outdoor Condenser Plastic Pad or Wall Bracket - We recommend outdoor condensers should not be placed directly on the ground. An outdoor condenser pad or wall bracket will provide a stable way to mount your condenser free from obstructions and debris.
    Adding these accessories to your order will provide a complete, ready-to-install mini split system. All Mini Split Systems require one Primary Mini Split Installation Kit. You may also require one or more Secondary Installation Kits if you have a Multi-Zone system. You will need a Secondary Installation Kit for each additional indoor unit.
    Bundle Includes 8 items
    Specifications
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    Specifications

    Included In This Bundle

    Bundle Overviewgrey arrow icon
    Overview
    Product Category
    Mini Split Heat Pump System
    General Information
    Type
    Concealed Duct
    Product Line
    M-Series
    Product Category
    Mini Split Heat Pump System
    Operating Mode Learn More
    Operating Mode
    Some products are only capable of cooling, while others can either heat or cool a space. Some products heat via "heat pump" technology while others use electric heating elements.
    Heating and Cooling
    Number of Zones Learn More
    Number of Zones
    A zone is a room or area within a building that has its own temperature control.
    3
    Refrigerant Type
    R-410A
    Indoor Unit Size(s) Learn More
    Indoor Unit Size(s)
    Mini split systems can have one or more indoor units connected to a single outdoor unit. Indoor Unit Size(s) specifies what indoor unit sizes are used in a system. We have combined 6k and 7k indoor units to enhance searchability.
    12 + 15 + 15
    Outdoor Unit Size
    42000 BTU
    DOE Regional Compliance Learn More
    DOE Regional Compliance
    In 2015, the US Department of Energy broke the country into three regions - North, Southeast, and Southwest - and set legal standards for energy efficiency within each region.
    Nationwide
    Performance
    Low Ambient Heating
    No
    Minimum Outdoor Temperature for Heating Learn More
    Minimum Outdoor Temperature for Heating
    This is the lowest rated outdoor temperature for heating operation. Because heat pumps rely on heat available in outdoor air, the amount of heat they are able to supply decreases with outdoor temperatures.
    5 F
    Minimum Outdoor Temperature for Cooling
    14 F
    SEER2 Learn More
    SEER2
    The U.S Department of Energy has raised the minimum rating requirements starting in 2023 that include updated testing conditions and metrics to better reflect real-world conditions. SEER2 (Seasonal Energy Efficiency Ratio) is a measurement of cooling efficiency over a typical cooling season. It is useful for comparing energy efficiency of cooling systems. The higher the SEER2, the more energy efficient the system.
    15.2
    EER2 Learn More
    EER2
    The U.S Department of Energy has raised the minimum rating requirements starting in 2023 that include updated testing conditions and metrics to better reflect real-world conditions. EER2 (Energy Efficiency Ratio) is a measurement of cooling efficiency under fixed conditions. It is useful for comparing units that will operate consistently under one set of conditions (e.g. server room). The higher the EER2, the more efficient the system.
    9.0
    HSPF2 Learn More
    HSPF2
    The U.S Department of Energy has raised the minimum rating requirements starting in 2023 that include updated testing conditions and metrics to better reflect real-world conditions. HSPF2 (Heating Seasonal Performance Factor) is a measure of heating efficiency for heat pumps. It is useful for comparing energy efficiency of heat pumps. The higher the HSPF2, the more efficient the system.
    8.3
    Dimensions
    Product Weight
    377 Pounds
    Shipping Weight
    381 Pounds
    Certifications
    ETL Listed
    Yes
    AHRI Certified
    Yes
    AHRI Reference Number
    212925486
    General Information
    Type
    Outdoor Condenser
    Product Line
    M-Series
    Product Category
    Mini Split System Components
    Operating Mode Learn More
    Operating Mode
    Some products are only capable of cooling, while others can either heat or cool a space. Some products heat via "heat pump" technology while others use electric heating elements.
    Heating and Cooling
    Maximum Number of Zones
    5
    Multi-Zone Compatible
    Yes
    Refrigerant Type
    R-410A
    Installation Location
    Outdoor
    Base Pan Heater Included
    No
    Performance
    Cooling BTU
    42000
    Cooling Capacity
    43000 BTU
    Heating Capacity
    53600 BTU
    Maximum Sound Level Learn More
    Maximum Sound Level
    Sound levels are measured in decibels (dB). The lower the decibel rating, the less noise the product makes. As an example, a ticking watch is 20 dB while on the other end of the scale, a lawn mower is around 90 dB.
    58 dB
    Low Ambient Heating
    No
    Minimum Outdoor Temperature for Heating Learn More
    Minimum Outdoor Temperature for Heating
    This is the lowest rated outdoor temperature for heating operation. Because heat pumps rely on heat available in outdoor air, the amount of heat they are able to supply decreases with outdoor temperatures.
    5 F
    Minimum Outdoor Temperature for Cooling
    14 F
    Electrical Data
    Voltage
    208/230 Volts
    Phase
    1
    Frequency
    60 Hz
    Minimum Circuit Ampacity
    32.5 Amps
    Recommended Breaker Size
    40 Amps
    Dimensions
    Maximum Line Length
    262 Feet
    Line Set A Liquid Connection
    1/4 Inch
    Line Set A Gas Connection
    1/2 Inch
    Line Set B Liquid Connection
    1/4 Inch
    Line Set B Gas Connection
    3/8 Inch
    Line Set C Liquid Connection
    1/4 Inch
    Line Set C Gas Connection
    3/8 Inch
    Line Set D Liquid Connection
    1/4 Inch
    Line Set D Gas Connection
    3/8 Inch
    Line Set E Liquid Connection
    1/4 Inch
    Line Set E Gas Connection
    3/8 Inch
    Product Height
    41 13/48 Inches
    Product Width
    37 19/48 Inches
    Product Depth
    13 Inches
    Product Weight
    189 Pounds
    Shipping Height
    48 7/16 Inches
    Shipping Width
    41 3/8 Inches
    Shipping Depth
    17 3/8 Inches
    Shipping Weight
    218 Pounds
    Certifications
    ETL Listed
    Yes
    Warranty Information
    Parts Warranty Learn More
    Parts Warranty
    A warranty is a safeguard from defects in manufacturing and can vary in length and terms. Some manufacturers require registration for extended warranty benefits, be sure to check out features and the warranty document. To see the manufacturer's warranty statement, click on the Manuals tab.
    5 Years
    Compressor Warranty
    7 Years
    General Information
    Type
    Concealed Duct
    Product Line
    M-Series
    Product Category
    Mini Split System Components
    Operating Mode Learn More
    Operating Mode
    Some products are only capable of cooling, while others can either heat or cool a space. Some products heat via "heat pump" technology while others use electric heating elements.
    Heating and Cooling
    Multi-Zone Compatible
    Yes
    Refrigerant Type
    R-410A
    Indoor Unit Size(s) Learn More
    Indoor Unit Size(s)
    Mini split systems can have one or more indoor units connected to a single outdoor unit. Indoor Unit Size(s) specifies what indoor unit sizes are used in a system. We have combined 6k and 7k indoor units to enhance searchability.
    15
    Installation Location
    Indoor
    Performance
    Cooling BTU
    15000
    Cooling Capacity
    14100 BTU
    Moisture Removal
    2.6 Pints/Hour
    Maximum Air Flow
    529 CFM
    Minimum Air Flow
    353 CFM
    Minimum Sound Level
    30 dB
    Maximum Sound Level Learn More
    Maximum Sound Level
    Sound levels are measured in decibels (dB). The lower the decibel rating, the less noise the product makes. As an example, a ticking watch is 20 dB while on the other end of the scale, a lawn mower is around 90 dB.
    37 dB
    Electrical Data
    Phase
    1
    Frequency
    60 Hz
    Dimensions
    Gas Connection Size
    1/2 Inch
    Liquid Connection Size
    1/4 Inch
    Product Height
    7 7/8 Inches
    Product Width
    39 Inches
    Product Depth
    27 9/16 Inches
    Product Weight
    64 Pounds
    Shipping Weight
    74 Pounds
    Certifications
    ETL Listed
    Yes
    Warranty Information
    Parts Warranty Learn More
    Parts Warranty
    A warranty is a safeguard from defects in manufacturing and can vary in length and terms. Some manufacturers require registration for extended warranty benefits, be sure to check out features and the warranty document. To see the manufacturer's warranty statement, click on the Manuals tab.
    5 Years
    Overview
    Product Category
    Mini Split System Components
    General Information
    Type
    Concealed Duct
    Product Line
    M-Series
    Product Category
    Mini Split System Components
    Operating Mode Learn More
    Operating Mode
    Some products are only capable of cooling, while others can either heat or cool a space. Some products heat via "heat pump" technology while others use electric heating elements.
    Heating and Cooling
    Multi-Zone Compatible
    Yes
    Refrigerant Type
    R-410A
    Indoor Unit Size(s) Learn More
    Indoor Unit Size(s)
    Mini split systems can have one or more indoor units connected to a single outdoor unit. Indoor Unit Size(s) specifies what indoor unit sizes are used in a system. We have combined 6k and 7k indoor units to enhance searchability.
    12
    Installation Location
    Indoor
    Performance
    Cooling BTU
    12000
    Cooling Capacity
    11500 BTU
    Moisture Removal
    2.4 Pints/Hour
    Maximum Air Flow
    388 CFM
    Minimum Air Flow
    247 CFM
    Minimum Sound Level
    23 dB
    Maximum Sound Level Learn More
    Maximum Sound Level
    Sound levels are measured in decibels (dB). The lower the decibel rating, the less noise the product makes. As an example, a ticking watch is 20 dB while on the other end of the scale, a lawn mower is around 90 dB.
    33 dB
    Electrical Data
    Phase
    1
    Frequency
    60 Hz
    Dimensions
    Gas Connection Size
    3/8 Inch
    Liquid Connection Size
    1/4 Inch
    Product Height
    7 7/8 Inches
    Product Width
    39 Inches
    Product Depth
    27 9/16 Inches
    Product Weight
    60 Pounds
    Shipping Weight
    70 Pounds
    Certifications
    ETL Listed
    Yes
    Warranty Information
    Parts Warranty Learn More
    Parts Warranty
    A warranty is a safeguard from defects in manufacturing and can vary in length and terms. Some manufacturers require registration for extended warranty benefits, be sure to check out features and the warranty document. To see the manufacturer's warranty statement, click on the Manuals tab.
    5 Years
    Overview
    Product Category
    Mini Split System Components
    General Information
    Type
    Mini Split Controller
    Product Line
    RedLINK
    Product Category
    Mini Split Accessories
    Programmable
    Yes
    Power Source
    AA Batteries
    Interface
    Touchscreen
    Performance
    Minimum Operating Temperature
    32 F
    Maximum Operating Temperature
    120 F
    Dimensions
    Product Height
    4 1/12 Inches
    Product Width
    4 1/12 Inches
    Product Depth
    1 1/16 Inches
    Overview
    Product Category
    Mini Split Accessories
    General Information
    Type
    Port Adapter
    Product Category
    Mini Split Accessories
    Connection Type
    Flared
    Dimensions
    End 1 Connection Size
    3/8 Inch
    End 2 Connection Size
    1/2 Inch
    Product Weight
    0.5 Pounds
    Warranty Information
    Parts Warranty Days
    90
    Overview
    Product Category
    Mini Split Accessories
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    Mitsubishi Concealed Duct 3-Zone System - 42,000 BTU Outdoor - 12k + 15k + 15k Indoor - 15.2 SEER2
    Mitsubishi M3H42D12151500-B
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    Mitsubishi M3H42D12151500-B
    Mitsubishi M3H42D12151500-B
    Mitsubishi M3H42D12151500-B
    Mitsubishi M3H42D12151500-B
    Mitsubishi M3H42D12151500-B
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