18,000 BTU 21 SEER Floor Mounted Mitsubishi Mini-Split H2i Hyper Heat Single Zone Heat Pump - MZ-KJ18NA

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AHRI Number:201754293

Suggested Retail $4,358.00 As low as Special Price $3,366.75
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The Mitsubishi MFZ-KJ18NA / MUFZ-KJ18NAHZ is a floor mounted single-zone mini-split. With its high 21 SEER efficiency rating and its 18,000 BTU output, the MFZ-KJ18NA / MUFZ-KJ18NAHZ is a good option for any installation where a low-wall installation is required, as it only needs to be 3” off of the floor.


  • Designed to be able to heat and cool up to a medium-sized room in ideal climates
  • 18,000 BTU, 21 SEER single-zone mini-split
  • Slim floor mounted installation design
  • Hyper Heat technology, able to operate at -13°F
18,000 BTU, 21 SEER

The Mitsubishi MFZ-KJ18NA / MUFZ-KJ18NAHZ can be used to heat and cool a medium-sized room in ideal climates, with its output of 18,000 BTU. The unit’s efficiency is rated at 21 SEER, saving you money over many other brands due to its high efficiency.


Mitsubishi provides a 5 year parts and 7 year compressor warranty from the factory. When the unit is installed following your state and local codes and is registered online through the manufacturer, the warranty is upgraded to a 10 year parts and compressor warranty.

Intelligent Comfort

The Mitsubishi MFZ-KJ18NA / MUFZ-KJ18NAHZ is engineered with automatic adjustments to keep the room’s temperature at the operator’s desired setting, keeping you more comfortable in the space you are trying to heat and cool. With Mitsubishi’s optional Kumo Cloud Adapter, found here, this unit can be controlled from anywhere that you have Internet access—from across town at work to across the world on vacation—bringing ease of control to Mitsubishi’s enhanced comfort systems.

Convenient but Effective Design

The Mitsubishi MFZ-KJ18NA / MUFZ-KJ18NAHZ’s air handler is manufactured as a slim, low-clearance system, with a bottom clearance of only 3” since the system is designed to have a top output. This small form factor and clearance allows the unit to be installed for more applications, all the while still able to easily heat and cool the room in which it is installed.

Product Specifications
More Information
18,000 BTU 21 SEER Floor Mounted Mitsubishi Mini-Split H2i Hyper Heat Single Zone Heat Pump - MZ-KJ18NA
Weight (in lbs) 260.000000
AHRI Certificate Number 201754293
Manufacturer Mitsubishi
Controller Wireless Included
Additional Information Heat Pump
Additional Information Maximum Line Set Length: 100'
Additional Information Drain: 5/8"
HSPF 11.3
Cooling BTU 17,000 BTU
Heating BTU 21,000 BTU
Maximum CFM 168-491 CFM
Decibel Level (dBA) Indoor Unit: 28-50 | Outdoor Unit: 51-55
Energy Star Yes
Refrigerant R410A
Refrigerant Charge Pre-Charged For: 25'
Capacity Dehumidification Rate: 0.55 gal/hr
EER 12.6
Liquid Line 1/4"
Suction Line 1/2"
Electrical 208/230V 1 Phase 60 Hz
Max Breaker Size 20
Min. Breaker Size 16
Amperage Requirement 20
Tonnage 1.5 Ton
System Tonnage 1.5 Ton
Mini-Split Type Floor Mounted
Min/Max Outdoor Temp for Heating -13°-75°
Min/Max Outdoor Temp for Cooling 14°-115°
Zone Compatibility Single Zone
Operating Mode Cooling, Heating
Height Indoor Unit: 23-5/8" | Outdoor Unit: 34-5/8"
Width Indoor Unit: 29-17/32" | Outdoor Unit: 33-1/16"
Depth Indoor Unit: 8-15/32" | Outdoor Unit: 13"
Additional Info Indoor Unit Weight: 33 lbs | Outdoor Unit Weight: 124 lbs
Warranty 10 Years with Online Registration
Resources You will need Adobe® Acrobat® Reader to view PDF documents.
Safety Information PROPOSITION 65 WARNING
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