5 Zone MXZ-5B42NA + (5) SEZ-KD09NA4 + (5) MHK1 - 45000 BTU (4) Ton

As Low As :
Based on a purchased price of
at 20% of APR for 12 months
Financing available.Choose your monthly payment options.Get your purchase today.
Click Here to Learn more.

Availability: In stock


Price as configured: $8,591.99

Model #: MXZ-5B42NA(9+9+9+9+9)CD
Brand : Mitsubishi

Availability: In stock

  • 5 Zone Concealed-Slim Duct System
  • Free Shipping
    Do you have any questions about MXZ-5B42NA(9+9+9+9+9)CD?
    CALL NOW: (800) 880-0199 EMAIL US

    5 Zone MXZ-5B42NA + (5) SEZ-KD09NA4 + (5) MHK1 - 45000 BTU (4) Ton

    Mitsubishi MXZ-5B42NA System By Younits.com

    The MXZ-5B42NA(9+9+9+9+9)CD Mitsubishi System combination is specifically matched with the correct indoor air handlers and the outdoor MXZ-5B42NA Heat Pump condenser based on the approved parameters set by Mitsubishi.

    This system is comprised of:

    1 x MXZ-5B42NA

    5 x SEZ-KD09NA4

    5 x MHK1

    1 x MAC-A455JP-E

    It comes with all the necessary components provided by Mitsubishi. Line-sets and Installation components are sold separately.

    The MXZ-5B42NA(9+9+9+9+9)CD Mitsubishi System is also commonly searched as 9+9+9+9+9 in the search bar as are all Mini-split Multi-Zone combination. Try any combination up to 8 zones.

    Younits.com can also custom create any mix and match combination within the allowable parameters set by the manufacturer. Let us quote it for you.

    Cooling Capacity for the MXZ-5B42NA(9+9+9+9+9)CD:

    12600 - 41500

    Heating Capacity for the MXZ-5B42NA(9+9+9+9+9)CD:

    11400 - 53600

    These capacities are based on calculation taking into account various use scenarios and are not always representative of the application they will be used in.

    For this reason the MXZ-5B42NA(9+9+9+9+9)CD is considered:

    45000 BTU 4 Ton System based on the air handler combination.

    Component Overview

    • MXZ 5B42NA Multi Zone Ductless Outdoor Heat Pump 42,000 BTU (3.5 Ton)

      Mitsubishi MXZ 5B42NA Multi Zone 3.5 Ton Heating and Cooling Ductless System 42,000 BTU Outdoor Unit

      Multiple rooms with individual control from a single system

      Enjoy ideal levels of comfort in the rooms you use most with our multi–room system. Each room (zone) operates independently. People in different rooms – the kitchen, master bedroom, or living room – can enjoy temperature settings that make each of them most comfortable.

      If you’re looking for a complete comfort solution for several different rooms, the MXZ multi-room system is the right choice. The system is flexible enough to conform to a particular cooling and heating need and offers numerous different indoor unit combinations. In addition up to eight indoor units can be connected to one outdoor unit. Now with a SEZ horizontal ducted unit and a MFZ floorstanding unit homeowners can enjoy an even greater range of zoning options provided by an MXZ system.

      An MXZ multi-room system is an excellent choice for supplementing capacity to a current system, conditioning newly furnished spaces, or new additions and replacing a system within a home. Homeowners can also benefit from lower energy costs year-round while staying comfortable thanks to Mitsubishi Electric’s energy-efficient technologies that are a part of every system that we make.

      To add to the level of energy efficiency, the MXZ-2B20NA and MXZ-3B24NA systems qualify for both ENERGY STAR® and the federal tax credit (See details on page 21 for applicable indoor unit combinations).


      Diamond Comfort MXZ Multi-zone systems

      MXZ-B Series multi-zone systems provide personalized comfort control and energy efficiency in up to as many as eight rooms with indoor unit air handlers with only a single outdoor unit.

      The MXZ-B Series system features include the following features:

      •  individual zone control
      •  mix and match flexibility of indoor unit styles and combinations
      •  a wide range of indoor unit capacities that match the room size and requirements
      •  flexible design options to tackle the most challenging multi-room installations
      •  efficient systems, including three systems that meet ENERGY STAR® and federal tax credit requirements
      •  simple, quick, and cost–effective installation keeps install costs down on new construction and disruption to a minimum on renovations and refits

      Efficiency and performance ratings are dependent upon the number, style, and capacity of the indoor units installed with each Multi-Zone System.

      Features and Benefits:

      • Anti-allergy enzyme filter which uses artificial blue enzyme catalyst on the filter filaments to capture harmful microbes
      • Hybrid Catechin pre-filter fibers infused with a bioflavinoid found in green tea that has antiviral and antioxidant properties
      • A-Control for unit wiring allows communication and power between outdoor and indoor units on three wires
      • Pulse Amplitude modulation (PAM) Control aligns electrical input wave to improve electrical power factor up to 98%
      • Low-ambient Cooling Operation allows for efficient operation with outdoor temperatures as low as 14°F (for the inverter models)
      • Powerful Mode provides 15 minutes of extra high-power cooling or heating
      • Wide Airflow (MSY/Z-A24) using two vane motors provides for seven horizontal airflow directions
      • Econo-Cool mode, 1? F step temperature setting, self-diagnostic function, swing mode (up and down), auto restart, dry mode operation
      • 6 year warranty on compressor and 1 year warranty on parts
      • NEW R410A Refrigerant

      Innovative Compressor Technology

      INVERTER-driven compressor systems in the outdoor unit detect subtle changes in temperature and, like a car’s cruise control, automatically adjust compressor speed – unlike conventional units, which start and stop repetitively. Special components within the compressor increase the magnetic flux and reduce its weight, allowing the compressor to generate higher energy efficiencies with better performance than ever before – at low levels of sound during start-up and running

      Efficient. Quiet. Secure.

      That's right. Reliable Mitsubishi MS-A09WA Mr. Slim units deliver all of these. First its small design, smart functionality, and lack of ductwork plus INVERTER (Models MS-A090WA nad MS-A12WA are the only non-inverter type Mitsubishi systems ) technology make it energy-efficient. Second, the unit's fan is designed to deliver air quietly and continuously with only a gentle whoosh for constant circulation and filtration. (That's why Mr. Slim systems were the first choice for thousands of churches, schools, and libraries across the U.S. Shhh!) Third, because each systems installs with only a three-inch opening for connecting the indoor and outdoor units, you don't have to worry about thieves gaining access through an easy-to-remove window unit. With Mr. Slim systems you can sleep in quiet comfort with a sense of security.

      The Solution is Clear

      • Cool only the areas you want and not the areas where you are not
      • Individual zoning at the push of a button, putting you in total comfort control
      • Less then 5% cooling loss occurs in insulated refrigerant lines versus up to 40% through ducts
      • Requiring just a 3 to 4" diameter hole in the outside wall means less mess, better home aesthetics, and improved security, unlike a window unit
      • Mr. Slim models mount high on the wall so they don't disturb your view
      • Mitsubishi units add value to your home and are more efficient than old window units, saving you money

      Quiet Operation

      Do you hear that? No? You barely hear our systems because Mitsubishi indoor units operate with barely a whisper.

      For example:

      • Police siren 118 decibels
      • Circular saw 107 decibels
      • Vacuum cleaner 74 decibels
      • Library reading room 33 decibels
      • Whisper-tone voice 35 decibels
      • Our Indoor Units 19 - 34 decibels (at low speed)

      Did you hear that? We hope you did.

      System Control in the Palm of Your Hand

      Mitsubishi Electric offers a comprehensive remote controller that controls temperature, fan speed and more. Choose from four modes: COOL, HEAT, AUTO and DRY. The controller also has a 12-hour ON/OFF timer for one-button control of your personal comfort.

      Warm Air, No Drafts

      Our hot-start heat pump technology provides warmth from the beginning. The fan increases in speed as the coil is warmed, reducing drafts so when you want warm air, you’ll get it.

      Easy to Maintain

      With easily accessible filters, little or no ductwork to clean, and uncomplicated wiring connection points between the indoor and outdoor units, Mitsubishi systems rely on minimal maintenance, providing another level of comfort.

    • SEZ KD09NA4 Concealed Ceiling Slim Duct Indoor Unit Air Handler 8,100 BTU (3/4 Ton)

      Mitsubishi SEZ KD09NA4 3/4 Ton Concealed Ceiling Slim Duct Heating / Air Conditioning System 8,100 BTU Indoor Unit

      Sleek Styling, Small footprint, Big Difference:

      If you’re looking for discreet zoned comfort, then a short run ducted unit might be the solution for you. Whether you require a stand alone system or are in the market for a connected MXZ multi room system, the SEZ ducted units combine energy efficiency with quiet operation. Extremely quiet, in fact with operation volume as low as 23 dBA, these systems are no louder than a whisper.

      Additionally, their compact design allows for installation either hidden in the ceiling or beneath the floor. Three of the 1:1 systems are ENERGY STAR certified and two systems qualify for the federal tax credit. These units provide you with an environmentally friendly option that also provides a clean, installed look. These models offer the added flexibility of working in tandem with ductless models on the same MXZ multi-zone system, providing multiple installation options to best fit any application.

      The temperature of any space with an indoor air handler can be controlled to provide the perfect temperature. Along with this unique benefit, this also allows you to control whether or not a particular room is being conditioned based on if it is being occupied or not.

      Whichever mini split system you decide, you’ll be choosing an intelligent and eco friendly system that can deliver precise and controlled comfort.

      Benefits of a Mitsubishi SEZ-KD09NA4:

      The mini split is an extremely quiet system in and out. As stated above, the operating volume is little more than a whisper and the outside component to the system is much quieter than conventional models The slim and unobtrusive nature of both the indoor and the outdoor components means you save space in every aspect using this system. Its small size matched with its quiet performance means you hardly know it’s there.

      The lack of necessity for large ductwork as would be required by a conventional system saves on interior space for your home. This also makes installation easier than a traditional system and small line sets make any exposed lines minimal and attractive. Traditional ductwork can collect dust, dust mites and pollutants. Due to the nature of the mini split system, no ductwork is required meaning no place for unwanted pollutants to collect in your home.

      These systems are extremely efficient as well, much more so than a conventional system which translates into energy savings for you and your family. The zone ability of the mini split means you can bring in climate control into separate areas of your home with the use of multiple air handlers.

      Optional Filter Box for Mitsubishi SEZ-KD09NA4 :

      The FBL1 filter box for this model includes 1” thick pleated MERV 8 filters that are tested in accordance with ANSI/ASHRAE standard 52.2 and rated Class 2 under U.L standard 900 The filter cabinet is a screw through design to ensure a secure attachment to the indoor unit and the return connection in the rear can be converted to a bottom return. Constructed of non-insulated 20 gauge G-60 galvanized steel, the filter cabinet has a foam gasket that provides an airtight connection to the indoor unit and access door

      Warm Air Without the Drafts

      Mitsubishi's hot start heat pump technology provides warmth right from the beginning. The fan increases in speed as the coil is warmed, reducing drafts. This means when you want warm air, you’ll get it.

      The Mitsubishi SEZ-KD09NA4  is Easy to Maintain

      Providing an additional level of comfort, Mitsubishi systems require minimal maintenance. There is little to no ductwork to clean and filters are readily accessible. Uncomplicated wiring connection points between the indoor and outdoor units make maintenance a breeze.

      Mitsubishi SEZ-KD09NA4 Highlights:

          • Ceiling concealed ducted indoor unit for residential applications
          • Ultra thin body 7 7/8" high
          • Built in drain mechanism for condensate removal
          • Air filter is included with the indoor unit
          • Whisper-tone voice 35 decibels
          • Our Indoor Units 19 - 34 decibels (at low speed)
          • Automatic fan speed control
          • Auto restart following a power outage
          • Limited Warranty: One year on parts and defects

      Mitsubishi SEZ-KD09NA4 Specifications:

          • Capacity BTU/h : Cooling 8100  Heating 10,900
          • Power Source: 208/230V (60Hz)
          • Finish: Galvanized
          • External Dimensions (IN): 7 ⅞ x 31  ⅛ x 27  9/16
          • Net Weight: 18kg
          • Sound Level Low/Medium/High dB <A> : 23 26 30
          • Air Filter: PP Honeycomb fabric (washable)
          • MHK1 Controller sold separately here
          • Optional Filter Box sold here

      Here are some terrific applications where a Mini Split system would be ideal:

      Residential Applications for Mitsubishi SEZ-KD09NA4:

          • Sun rooms
          • Wine cellars
          • Guest quarters
          • Garage workshops
          • Homes without duct work
          • Bedrooms and family rooms
          • Room additions and renovations

      Commercial Applications for Mitsubishi SEZ-KD09NA4:

          • Storage facilities
          • Hotels and other lodging
          • Computer rooms/server rooms
          • Offices in warehouse spaces
          • Restaurant kitchen and prep areas
          • Buildings where security concerns prevent the use of window units
          • Internal areas without exterior wall access applications
          • Commercial add on jobs where the existing air conditioning system cannot be stretched.
          • Historical renovations or any application where preserving the look of the original structure is crucial.
    • MHK1 Wireless Remote Controller Kit for INVERTER-driven Mr. Slim Systems

      MHK1 Wireless Remote Controller Kit Exclusive for INVERTER-driven Mr. Slim Systems


      Mitsubishi MRCH1 Wireless Remote Controllermitsubishi

      •  Backlit, easy–to–read display
      •  Dual setpoint control with system changeover
      •  Enabled with RedLINK™ reliability
      •  Compatible with MCCH1 Portable Central Controller
      •  Installs Anywhere

      Mitsubishi MFH1 Wireless Receiver

      • Required for MRCH1 Wireless Remote Controller
      • Enabled with RedLINK reliability

      Mitsubishi MHK1 Kit includes

      • MRCH1 Wireless Wall-Mounted Remote Controllers
      • MIFH1 Wireless Receiver
      • MRC1 Cable

      Mitsubishi MHK1 Functions:

      • ON/OFF On/Off operation for a single indoor unit
      • Operation Mode - Cool / Drying / Auto / Heat / Fan only Available operation modes dependant on connected system.
      • Temperature Setting - Set temperature from 50°F – 87°F depending on operation mode and connected system
      • System Changeover - Deadband Value 2-8°F
      • Schedule Operation 5-2, 5-1-1
      • Fan Speed Setting -  Hi/Mid-2/Mid-1/Low/Auto Available fan speed settings dependant on connected system.
      • Air Flow Direction Setting - Air flow angles: 100o - 80o - 60o - 40o and oscilate Available air flow direction settings dependant on connected system.
      • Permit/Prohibit Function - Individual prohibit operations for each remote controller function (ON/ OFF, Set Temperature, and Operation Mode).
      • Space Temperature - Displays the measured space temperature.
      • Error Indication - Displays error code.
      • Display Outside Temperature and Humidity - Requires optional MOS1 Outside Air Senso
      • Dimensions - (W x D x H) Remote Controller: 5-3/16" x 1-1/2" x 3-9/16" Receiver: 3-1/4" x 1-5/16" x 6-7/16"
      • Operating Ambient Temperature Remote Controller: 32 - 120°F Receiver: -40 – 165°F
      • Operating Ambient Humidity Remote Controller: 5% - 90% RH (non-condensing) Receiver: 5% - 90% RH (non-condensing)
      • Power Supply 2 AA batteries
    • MAC-A455JP-E 1/2" X 3/8" MXZ Series Port

      MAC-A455JP-E 1/2" X 3/8" MXZ Series Port

      •  Use with Mitsubishi MXZ- Series Mini Split Outdoor Units. 
      • 1/2" x 3/8"





    Additional Information

    SKU/MODEL MXZ-5B42NA(9+9+9+9+9)CD
    Brand Mitsubishi
    Mounting Type No
    Outdoor Unit Type No
    SEER Rating No
    Zone 5 Zone
    Application No
    Cooling Capacity 45,000
    Heating Capacity 45,000
    Lowest Operating Temperature (Cooling) No
    Lowest Operating Temperature (Heating) No
    Cooling Range No
    Heating Range No
    Rated Capacity No
    amperage(amp0 No
    Decibels (outdoor) No
    Decibels high/med/low/quiet (indoor) No
    Dimensions (indoor) (H x W x D) No
    Dimensions (outdoor) (H x W x D) No
    liquid_line_connection_size No
    Suction Line Connection Size No
    Moisture Removal (Indoor) No
    Weight (Indoor) No
    Weight (Outdoor) No
    Inverter technology No
    Energy Star Rated No
    Auto Restart No
    Sleep Timer No
    Air Filter No
    Warranty No