SplitAtlas

Mitsubishi Electric / MXZ-D Ported Multi-Zone

Mitsubishi MXZ-D Ported 20k R-454B 208/230V 2-Zone Mini-Split

Certified capacity
18,000 BTU/h[2]
SEER2
20 SEER2[2]
Heating floor
-4 F[1]
Voltage
208/230V[1]
Install path
Professional install

The MXZ-2D20NL is Mitsubishi's entry into multi-zone: one 208/230V condenser that drives two indoor heads from a single outdoor unit and a single circuit. It belongs to the established MXZ-D "Ported Multi-Zone" line, uses current R-454B refrigerant, and carries a certified nominal SEER2 of 20 in the all-non-ducted configuration - a real efficiency rating, not the "configuration-dependent" blank that DIY multi-zone systems leave.

Your real-world efficiency still shifts with which heads you pair, but you start from a genuine certified number. Professional Mitsubishi-dealer installation is required; there is no self-install path.

2 zonesProfessional installCurrent

Refrigerant generation

R-454B - current-generation refrigerant

Need this installed?

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Error Codes
Mitsubishi Electric MXZ-D Ported Multi-Zone 2-Zone 20,000 BTU R-454B 208/230V (MXZ-2D20NL)

Image: Mitsubishi Electric

Data completeness: 97%
Last sourced
Jul 27, 2026

SplitAtlas score

7.8 / 10

Methodology
Cooling efficiencyBelow average

(20.0 SEER2) among 18k systems

Heating efficiencyBelow average

(10.0 HSPF2) among 18k systems

Cold-weather performanceBottom quartile

(5F certified capacity: 62.3% of the 47F rating; -4 F heating floor) among 18k systems

WarrantyTop quartile

(10 yr parts / 10 yr compressor) across the catalogue

Feature setBottom quartile

(2 verified features) across the catalogue

Documentation & partsTop 10%

(6 manuals; spec sheet; 34 error-code rows; parts channel) across the catalogue

Not evaluated

  • Installation accessibility — not applicable (professional install)N/A

    professional install - DIY-accessibility not applicable

  • Price-to-value — not evaluatedN/A

    This is a professionally installed, quote-only system, so we can't score its price. Get an installed quote to compare real cost.

    Get a quote

Key ratings

Rated cooling

18,000BTU/hNon-Ducted Indoor Units[2]

Rated heating

22,000BTU/hNon-Ducted Indoor Units[2]

Best-fit use cases

A two-room addition, a primary bedroom plus office, or a small upstairs where one outdoor unit and one circuit matter and the owner wants a certified Mitsubishi system professionally installed.

Buyer review snapshot

Best for / skip if

Best for

  • 2-zone projects in the 18k outdoor capacity class.

Install difficulty

Complex professional install
  • Electrical: 208/230V; MCA 21.7 A; breaker/fuse 38 A maximum (calculated recommendation: 35 A is the nearest standard breaker size at or below that maximum).
  • Line set: connection type not sourced; precharged 164 ft; max 164 ft.
  • 2-zone condenser; indoor-head matching and branch layout are part of the job.

Alternatives

Availability and price context

This Mitsubishi Electric system is sold through dealers, so its price comes as an installed quote that depends on your home. Get installation quotes to price it.

Source date

Model data sourced
Jul 27, 2026
Page reviewed
Jul 27, 2026
Source-backed records
4
Newest source retrieved
Jul 27, 2026

Warranty tiers

Base
5 yr parts / 7 yr compressor - licensed HVAC contractor installation
Registered
10 yr parts / 10 yr compressor - owner-occupied residence registered within 90 days of installation
Program
12 yr parts / 12 yr compressor - owner-occupied residence installed and registered by a Diamond Contractor within 90 days

The score uses Registered. Additional published terms are shown for reference and not counted in the score.

Review methodology

Strengths

  • Two rooms from one outdoor unit and one circuit - the simplest way to add a second Mitsubishi zone.
  • Certified nominal SEER2 20 / EER2 13 / HSPF2 10, ENERGY STAR certified
  • a real rating, not a withheld one.
  • Current-generation R-454B refrigerant.
  • Backed by Mitsubishi's dealer network, documentation, and reliability reputation.

Weaknesses

  • Professional dealer installation required - not DIY, priced by quote.
  • Standard (non-Hyper-Heat) unit: in hard winters the H2i MXZ-2D20NLHZ variant holds heat far better in deep cold for a small price step.
  • Two zones is the smallest multi-zone step; three or more rooms need a larger condenser, not this unit.
  • Like every multi-zone system, efficiency drops at part load when only one small zone is calling.

Climate suitability

Minimum heating ambient
-4 F[1]
Certified heating at 5F
13,700 BTU/hNon-Ducted Indoor Units[2]
Maximum heating at 5F (manufacturer)
13,700 BTU/h[1]
Rated heating at 17F
16,500 BTU/hNon-Ducted Indoor Units[2]
Rated heating at 47F
22,000 BTU/hNon-Ducted Indoor Units[2]

Specifications

Show
Manufacturer
Mitsubishi Electric
Brand
Mitsubishi Electric
Product line
MXZ-D Ported Multi-Zone
Model number
MXZ-2D20NL
Indoor unit model
Depends on the indoor units you choose
Outdoor unit model
MXZ-2D20NL
Number of zones
2
Max indoor units
2 units[1]
Rated cooling capacity
18,000 BTU/hNon-Ducted Indoor Units[2]
Rated heating capacity
22,000 BTU/hNon-Ducted Indoor Units[2]
Voltage
208/230V[1]
MCA
21.7 A[1]
Maximum fuse or breaker size
38 A[1]

Calculated recommendation: 35 A is the nearest standard breaker size at or below the published 38 A maximum.

Breaker needed
not published
SEER2
20 SEER2Non-Ducted Indoor Units[2]
EER2
13 EER2Non-Ducted Indoor Units[2]
HSPF2 (Region 4)
10 HSPF2Non-Ducted Indoor Units[2]
HSPF2 (Region 5)
Varies by indoor-unit combination
COP
not published
COP at 47F
not published
COP at 5F
not published
Minimum outdoor heating temperature
-4 F[1]
Minimum outdoor cooling temperature
14 F[1]
Maximum outdoor temperature
115 F[1]
Indoor noise range
Depends on the indoor units you choose
Outdoor noise rating
55 dBA[1]
Indoor weight
Depends on the indoor units you choose
Outdoor weight
119 lb[1]
Refrigerant
R-454B[2]
Refrigerant charge
71 oz[1]
Manufacturer coverage
not published
Line-set size
1/4 in all ports liquid / 3/8 in all ports suction
Included line-set length
Depends on the indoor units you choose
Maximum line-set length
164 ft[1]
Max line set per indoor
82 ft[1]
Maximum elevation difference
49 ft[1]
Max height between indoor units
MXZ-D direct-port submittals publish ODU-to-IDU elevation limits but no separate indoor-to-indoor height-difference limit.
Wi-Fi support
Depends on the indoor units you choose
Energy Star status
ENERGY STAR certified[3]
AHRI certification number
216498925Non-Ducted Indoor Units[2]
Warranty
Base: 5 yr parts / 7 yr compressor (licensed HVAC contractor installation); Registered: 10 yr parts / 10 yr compressor (owner-occupied residence registered within 90 days of installation); Program: 12 yr parts / 12 yr compressor (owner-occupied residence installed and registered by a Diamond Contractor within 90 days). Score uses Registered. Additional published terms are shown for reference and not counted in the score.. Standard residential M-Series and SMART MULTI warranty is 5 years parts and 7 years compressor from installation by a licensed HVAC contractor. Enhanced registered owner-occupied terms can extend to 10 years, or 12 years when installed and registered by a Diamond Contractor.
Install path
Professional install
Retail price
Installed quote only
Available retailers
not published
Manual links
AHRI public detail 216498925, ENERGY STAR direct rows for Mitsubishi MXZ, Mitsubishi Electric MXZ-D product launch guide, Mitsubishi Electric MXZ-D R454B outdoor unit service manual, MXZ-2D20NL Mitsubishi Electric MXZ-D Ported Multi-Zone submittal, METUS Residential M-Series, P-Series and SMART MULTI Limited Warranty Statement
Specification sheet
MXZ-2D20NL Mitsubishi Electric MXZ-D Ported Multi-Zone submittal
Last sourced date
Jul 27, 2026

Parts and filters

Fits Mitsubishi Electric MXZ-D Ported Multi-Zone 2-Zone 20,000 BTU R-454B 208/230V (MXZ-2D20NL). Part numbers and fit notes identify compatibility only; no manufacturer endorsement is implied.

control-interface

Mitsubishi M-NET Interface for MXZ

Fits
Mitsubishi Electric MXZ-D Ported Multi-Zone 2-Zone 20,000 BTU R-454B 208/230V (MXZ-2D20NL)
OEM part number
PAC-IF01MNT-E
Fit note
Fits MXZ-2D20NL. Manufacturer documentation publishes this OEM part number for this model family. No live HVACDirect exact-part offer was found; source through an authorized Mitsubishi Electric dealer with the model and serial number.
Source
Mitsubishi Electric MXZ-2D20NL Submittal, OUTDOOR UNIT ACCESSORIES: MXZ-2D20NL, page p. 3 (Control Interface M-NET Interface for MXZ PAC-IF01MNT-E)

service-tool-interface

Mitsubishi Maintenance Tool Interface

Fits
Mitsubishi Electric MXZ-D Ported Multi-Zone 2-Zone 20,000 BTU R-454B 208/230V (MXZ-2D20NL)
OEM part number
PAC-USCMS-MN-1
Fit note
Fits MXZ-2D20NL. Manufacturer documentation publishes this OEM part number for this model family. No live HVACDirect exact-part offer was found; source through an authorized Mitsubishi Electric dealer with the model and serial number.
Source
Mitsubishi Electric MXZ-2D20NL Submittal, OUTDOOR UNIT ACCESSORIES: MXZ-2D20NL, page p. 3 (Control/Service Tool Maintenance Tool Interface PAC-USCMS-MN-1)

drain-socket

Mitsubishi drain socket

Fits
Mitsubishi Electric MXZ-D Ported Multi-Zone 2-Zone 20,000 BTU R-454B 208/230V (MXZ-2D20NL)
OEM part number
MAC-811DS
Fit note
Fits MXZ-2D20NL. Manufacturer documentation publishes this OEM part number for this model family. No live HVACDirect exact-part offer was found; source through an authorized Mitsubishi Electric dealer with the model and serial number.
Source
Mitsubishi Electric MXZ-2D20NL Submittal, OUTDOOR UNIT ACCESSORIES: MXZ-2D20NL, page p. 3 (Drain Socket Drain Socket MAC-811DS)

air-outlet-guide

Mitsubishi air outlet guide

Fits
Mitsubishi Electric MXZ-D Ported Multi-Zone 2-Zone 20,000 BTU R-454B 208/230V (MXZ-2D20NL)
OEM part number
MAC-856SG
Fit note
Fits MXZ-2D20NL. Manufacturer documentation publishes this OEM part number for this model family. No live HVACDirect exact-part offer was found; source through an authorized Mitsubishi Electric dealer with the model and serial number.
Source
Mitsubishi Electric MXZ-2D20NL Submittal, OUTDOOR UNIT ACCESSORIES: MXZ-2D20NL, page p. 3 (Air Outlet Guide Air Outlet Guide MAC-856SG)

snow-rain-diverter

Mitsubishi snow/rain diverter

Fits
Mitsubishi Electric MXZ-D Ported Multi-Zone 2-Zone 20,000 BTU R-454B 208/230V (MXZ-2D20NL)
OEM part number
SRD-4
Fit note
Fits MXZ-2D20NL. Manufacturer documentation publishes this OEM part number for this model family. No live HVACDirect exact-part offer was found; source through an authorized Mitsubishi Electric dealer with the model and serial number.
Source
Mitsubishi Electric MXZ-2D20NL Submittal, OUTDOOR UNIT ACCESSORIES: MXZ-2D20NL, page p. 3 (Snow/Rain Diverter SnowRain Diverter SRD-4)

defrost-heater

Mitsubishi optional defrost heater

Fits
Mitsubishi Electric MXZ-D Ported Multi-Zone 2-Zone 20,000 BTU R-454B 208/230V (MXZ-2D20NL)
OEM part number
PAC-646BH-E
Fit note
Fits MXZ-2D20NL. Manufacturer documentation publishes this OEM part number for this model family. No live HVACDirect exact-part offer was found; source through an authorized Mitsubishi Electric dealer with the model and serial number.
Source
Mitsubishi Electric MXZ-2D20NL Submittal, OUTDOOR UNIT ACCESSORIES: MXZ-2D20NL, page p. 3 (Optional Defrost Heater Optional Defrost Heater PAC-646BH-E)
Replacement Parts & Filters

Electrical requirements

Show
Voltage
not published
Voltage range
208/230V[1]
Phase
1[1]
Frequency
60 Hz[1]
MCA
21.7 A[1]
Breaker needed
not published
Maximum breaker size
38 A[1]

Calculated recommendation: 35 A is the nearest standard breaker size at or below the published 38 A maximum.

Maximum fuse size
not published
Maximum cooling current
not published
Maximum heating current
not published
Manufacturer wire notes
not published

Installation considerations

Show
Liquid line
1/4 in all ports[1]
Suction line
3/8 in all ports[1]
Line connection type
not published
Precharged length
164 ft[1]
Included line-set length
Depends on the indoor units you choose
Maximum line-set length
164 ft[1]
Max line set per indoor
82 ft[1]
Max height between indoor units
MXZ-D direct-port submittals publish ODU-to-IDU elevation limits but no separate indoor-to-indoor height-difference limit.
Indoor dimensions
Depends on the indoor units you choose
Outdoor dimensions
33-1/16 x 13 x 27-15/16 in[1]
Indoor weight
Depends on the indoor units you choose
Outdoor weight
119 lb[1]
Drain size
not published

Related systems and guides

Frequently asked questions

Can I install the Mitsubishi Electric MXZ-D Ported Multi-Zone 2-Zone 20,000 BTU R-454B 208/230V (MXZ-2D20NL) myself, or do I need a pro?
Mitsubishi Electric MXZ-D Ported Multi-Zone 2-Zone 20,000 BTU R-454B 208/230V (MXZ-2D20NL) is built for professional installation: the line set must be flared, evacuated, and charged, which requires EPA-certified refrigerant handling. Installing it outside the manufacturer's requirements can void the warranty, so budget for a qualified HVAC installer.
Will the Mitsubishi Electric MXZ-D Ported Multi-Zone 2-Zone 20,000 BTU R-454B 208/230V (MXZ-2D20NL) keep heating in a cold winter?
The AHRI/ENERGY STAR certification lists 13,700 BTU/h of heating capacity at 5F. Rated heating operation extends down to -4 F. Certified heating efficiency is 10 HSPF2. Match those numbers against your climate's design temperature - in cold regions, output at 5F matters far more than the nameplate capacity measured at 47F.
What electrical circuit does the Mitsubishi Electric MXZ-D Ported Multi-Zone 2-Zone 20,000 BTU R-454B 208/230V (MXZ-2D20NL) need?
Published electrical requirements: 208/230V voltage, 21.7 A minimum circuit ampacity, and 38 A maximum breaker or fuse sizing. Calculated recommendation: 35 A is the nearest standard breaker size at or below the published 38 A maximum. Confirm the final circuit against the unit nameplate and local code with a licensed electrician.
How far can the outdoor unit be from the indoor head?
The published maximum line-set length from the outdoor unit to one indoor head is 82 ft. The combined piping limit across all heads is 164 ft. The outdoor unit's factory charge covers up to 164 ft of line; longer runs need added refrigerant. Measure the planned routing before ordering.
What warranty does the Mitsubishi Electric MXZ-D Ported Multi-Zone 2-Zone 20,000 BTU R-454B 208/230V (MXZ-2D20NL) carry?
The manufacturer publishes these warranty tiers: Base: 5 yr parts / 7 yr compressor (licensed HVAC contractor installation); Registered: 10 yr parts / 10 yr compressor (owner-occupied residence registered within 90 days of installation); Program: 12 yr parts / 12 yr compressor (owner-occupied residence installed and registered by a Diamond Contractor within 90 days). Score uses Registered. Additional published terms are shown for reference and not counted in the score.. Registration requirements and proof of qualified installation commonly affect coverage, so read the warranty terms before install day.

Data sources

Show
  1. Mitsubishi Electric Trane HVAC US LLC: MXZ-2D20NL Mitsubishi Electric MXZ-D Ported Multi-Zone submittalSourced - manufacturer technical document

    Covers Frequency, electrical_spec.guaranteed_voltage_range, Maximum breaker size, Minimum circuit ampacity, Phase, Voltage range and more

  2. Air-Conditioning, Heating, and Refrigeration Institute: AHRI public detail 216498925Sourced - AHRI directory

    Covers AHRI certification number, Rated cooling capacity, EER2, Rated heating capacity, HSPF2 (Region 4), Rated heating at 17F and more

  3. ENERGY STAR: ENERGY STAR Central Air Conditioners and Air-Source Heat Pumps product data rows for Mitsubishi MXZSourced - Energy Star listing

    Covers Energy Star status

  4. Mitsubishi Electric Trane HVAC US LLC: METUS Residential M-Series, P-Series and SMART MULTI Limited Warranty StatementSourced - secondary source

    Covers Additional published compressor warranty, Additional published warranty conditions, Additional published parts warranty, Legacy compressor warranty value, Legacy warranty value, Registered compressor warranty and more

Last updated

Jul 27, 2026