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Mitsubishi MXZ5B42NA4301 - 40,800 BTU 18.4 SEER Quad-Zone Floor Mounted Mini Split Heat Pump Outdoor Unit 220V (9-9-9-12)

Mitsubishi M-Series Multi Zone Floor Mount Heat Pump System, Bundle Includes - Outdoor Unit: MXZ-5B42NA, and Indoor Units: MFZ-KA09NA (x3), MFZ-KA12NA (x1)
Mitsubishi MXZ5B42NA4301 - 40,800 BTU 18.4 SEER Quad-Zone Floor Mounted Mini Split Heat Pump Outdoor Unit 220V (9-9-9-12)Mitsubishi MXZ5B42NA4301 - 40,800 BTU 18.4 SEER Quad-Zone Floor Mounted Mini Split Heat Pump Outdoor Unit 220V (9-9-9-12)
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4 4 Product Reviews
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SKU: MXZ5B42NA4301
Brand: Mitsubishi
SEER: 18.40
Room Size: 1,500 - 1,750 sq. ft.
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Have a question? Call Us 855-337-0001
Estimated Annual Cooling Cost
Depends on utility rates & use
Seasonal Energy Efficiency Ratio

System Includes
Outdoor Unit:   MXZ-5B42NA
Indoor Units:   MFZ-KA09NA (x3), MFZ-KA12NA (x1)
Remote Controls:   Handheld IR (x4)
Required, but not included:  1/4" X 3/8" (x4) line sets.   Linesets are available in various lengths from 15ft to 75ft.

This MR SLIM INVERTER-driven four-zone heat pump system, with ductless floor-standing indoor units, is the perfect solution for rooms with limited wall space. The indoor units can conveniently be installed on the lower wall, directly on or just above the floor.

Control Options
This system is compatible with the optional MHK1 wireless, RFI-RedLINK™ enabled, full-function wall mount controller, allowing homeowners to control their unit from a remote PC, smartphone or tablet (sold separately). If you prefer a standard, fully wired and functioning wall mount control, this system also works with the PAR-31MAA (sold separately and requires control adaptor MAC-333IF).

INVERTER Technology
The M-Series INVERTER-driven compressor and linear expansion valve (LEV) works with the system’s sophisticated electronic controls to detect temperature changes in a room or zone, automatically changing speeds to adjust for precise capacity and temperature control.

Air Filtration
These indoor units use a sophisticated multiple filtration system to ensure clean, healthy air throughout the rooms/zones they condition. The Hybrid Catechin washable pre-filter captures dust and eliminates odors, while the Blue Enzyme washable filter uses an enzyme catalyst to capture and eliminate allergens, germs, bacteria, and viruses.

Quiet Operation
Mr. Slim Indoor Units operate at very low sounds levels (19-35 decibels). According to a study performed by the National Institute for Occupational Safety and Health, most Mr. Slim Indoor Units are quieter than a human whisper (30 decibels) at low speed.

Environmentally Friendly
Mitsubishi was clearly taking the environment into consideration when designing the M-Series line by using R410A refrigerant with zero Ozone Depletion Potential (ODP), 83% recyclable components, and washable filters made from natural materials on all models.

Additional Features & Benefits

  • Auto fan speed feature plus four speed settings available (Low, Medium, High, Super High)
  • Bottom supply outlet in heat mode
  • “Smart Set” feature provides single button temperature recall
  • Wireless handheld remote controllers included
  • Front panel access makes filter cleaning an easy task
  • Compact, side discharge outdoor unit
  • Complete room/zone control for exceptional comfort
  • Indoor unit can be recessed into the wall to save even more space
  • Quiet outdoor operation ranging from 49-58 dB(A)
  • Self-check function with integrated diagnostics
  • Hot-start technology ensures warm air from startup
  • Auto restart feature works after a power outage
  • Outdoor condenser powers the indoor units

How many BTUs do I need for my ductless split?

Please Note: Mini Split Systems must be installed by a licensed Contractor with an EPA Refrigerant Certification to qualify for warranty.

(BTU ratings are estimates only, based on 10ft ceilings, with great insulation and windows. Some factors may alter this calculation: lack of insulation, heavy sun, excessively hot regions, & tall ceilings)

9,000 BTU       350 sqft
12,000 BTU     500 sqft
18,000 BTU     750 sqft
24,000 BTU     1,000 sqft
30,000 BTU     1,250 sqft
36,000 BTU     1,500 sqft

UPC 841999157647
Brand Mitsubishi
Model Family M-Series Multi Zone
Equipment Type Heat Pump
SEER 18.40
EER (Energy Efficiency Ratio) 9.4
Refrigerant R-410a
HSPF (Heating Seasonal Performance Factor) 9.8
Rated Cooling Capacity (BTU) 40,800
Rated Heating Capacity (BTU) 45,200
Nominal Capacity (BTU) 42,000
Voltage 208-230 VAC
Phase Single
Cycle/Hertz 60
Maximum Fuse Size 40
Number of Zones/Rooms 4 Zones
COP (Coefficient of Performance) 3.5
Inverter Technology Yes
Warranty Offered 7 Year Compressor - 5 Year Parts
Energy Star Rated No
4-Way Remote Air Flow Control No
Sound Pressure Rating ID - 28-31-36-41 dB(A) OD - 58 dB(A)
Liquid/Gas Line Set Size A: 1/4" X 3/8" B: 1/4" X 3/8" C: 1/4" X 3/8" D: 1/4" X 3/8"
Minimum Cooling Capacity 12,600
Maximum Cooling Capacity 43,000
Corrosion Protection No
Mounting Type Floor Console
Minimum Heating Capacity 11,400
Filter Type Washable Catechin Filter, Washable Anti-Allergy Enzyme Filter
Minimum Circuit Amps 36.2
Maximum Heating Capacity 53,600
Tonnage 3 1/2
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Product Review
Mark Renew
Sep 9, 2016
Love it. Nice quality, quiet, effective, easy setup, good documentation.
Product Review
Garry Genser
Mar 22, 2016
Haven't installed it yet but wanted to share how happy I was with Comfortup and with the shipper after reading reviews about negative experiences with other wholesalers not really having the products in stock and not being responsive in their handling of customer relations. I'll put another review of this product once I get it installed!
Product Review
Michael Diaz
Dec 2, 2015
Delivered very quickly. There was awesome customer service.
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