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12,000 BTU 26.1 SEER Wall Mounted Mitsubishi Mini-Split H2i Hyper Heat Single Zone Heat Pump - MZ-FS12NAH







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AHRI Number:201754299

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Designed with enhanced efficiency and supreme comfort, the Mitsubishi MSZ-FS12NA / MUZ-FS12NAH single-zone mini-split is an ideal wall mounted unit to heat and cool a single room of your home or office. With its enhanced sensors and automatic intelligent controls, the MSZ-FS12NA / MUZ-FS12NAH is considered a superior unit from a superior manufacturer.


  • Designed to be able to heat and cool an average-sized room in average climates
  • 12,000 BTU, 26.1 SEER wall mounted mini-split
  • Built-in I-SEE sensor and auto-controlled outlet vanes
  • Hyper Heat pump technology, functioning down to -13°F
  • Energy Star certified
12,000 BTU, 26.1 SEER

At an output of 12,000 BTU and an efficiency rating of 26.1 SEER, Mitsubishi designed the MSZ-FS12NA / MUZ-FS12NAH to be a good suit for any average-sized rooms in ideal climate conditions. With a higher efficiency over many other options, this unit is efficient enough Energy Star certified.


Mitsubishi provides a 5 year parts and 7 year compressor warranty out of the box. 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.

Reliable Functionality

With Mitsubishi’s Hyper Heat technology, the MSZ-FS12NA / MUZ-FS12NAH will provide heat down as low as -13°F as measured by the outdoor unit, reliably providing warmth to the room it is covering year-round in most climates.

Ease of Comfort

The Mitsubishi MSZ-FS12NA / MUZ-FS12NAH mini-split comes with an IR remote in the box so that the unit can be controlled anywhere in the room. With the Kumo Cloud, a Mitsubishi-branded WiFi mini-split adapter found here, conveniently providing you access to the unit’s controls from anywhere in the world as long as you have Internet access through the app.

Intelligent Controls

The Mitsubishi MSZ-FS12NA / MUZ-FS12NAH is engineered to perfection in its intelligent automated temperature controls. The Mitsubishi MSZ-FS12NA / MUZ-FS12NAH is designed to automatically ramp up and down depending on your room’s cooling needs in order to keep a stable temperature. Moreover, the system is built with an integrated I-SEE sensor, which constantly measures temperatures in different points in the room to change the direction of air flow as needed. Effectively, this feature allows the unit to focus its efforts on the part of the room that needs heat or cooling the most, keeping a much more stable temperature in the room than units without the I-SEE sensor. With all of these enhanced comfort features, the MSZ-FS12NA / MUZ-FS12NAH definitely lives up to Mitsubishi’s superior standards.

Product Specifications

More Information
12,000 BTU 26.1 SEER Wall Mounted Mitsubishi Mini-Split H2i Hyper Heat Single Zone Heat Pump - MZ-FS12NAH
Refrigerant Charge Pre-Charged For: 25'
Weight (in lbs) 116.000000
AHRI Certificate Number 201754299
Brand/Manufacturer Mitsubishi
Controller Wireless Included
Additional Information Heat Pump
Additional Information Maximum Line Set Length: 65'
Additional Information Drain: 5/8"
HSPF 12.5
Cooling BTU 12,000 BTU
Heating BTU 13,600 BTU
Maximum CFM 117-398 CFM
Decibel Level (dBA) Indoor Unit: 21-42 | Outdoor Unit: 49-51
Energy Star Yes
Refrigerant R410A
Capacity Dehumidification Rate: 0.38 gal/hr
SEER1 (Efficiency) 26-30
EER 13.8
Liquid Line 1/4"
Suction Line 3/8"
Electrical 208/230V 1 Phase 60 Hz
Phase Single Phase
Max Breaker Size 15
Min. Breaker Size 11
Amperage Requirement 15
BTU/Tonnage 12,000 BTU/1 Ton
Mini-Split Type Wall 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: 12-11/16" | Outdoor Unit: 21-5/8"
Width Indoor Unit: 36-7/16" | Outdoor Unit: 31-1/2"
Depth Indoor Unit: 9-3/16" | Outdoor Unit: 11-1/4"
Additional Info Indoor Unit Weight: 34 lbs | Outdoor Unit Weight: 90 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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Questions and Answers

Customer Questions
What is HSPF?
HSPF stands for Heating Seasonal Performance Factor. This term is used to measure efficiency between heat output and the electricity used. If you have any further questions please feel free to give us a call! Thanks.
The minimum and maximum for heating is -13 to -75 degrees. Does that mean it has to be -13 before the unit will start heating?
That means it can function at -13 degree temperatures.
What is the lowest temperature I can set the heat at?
Thank you for your question. This unit efficiently heats with outdoor temperatures ranging from -14 degrees Fahrenheit to 75 degrees Fahrenheit. It cools with outdoor temperatures ranging from 14 degrees Fahrenheit to 115 degrees Fahrenheit. For indoor temperature control, the unit heats between 70 degrees Fahrenheit and 80 degrees Fahrenheit; the unit cools between 57 degrees Fahrenheit and 90 degrees Fahrenheit. For more assistance, please give us a call.
Hi can I find someone to install this?
Hello, since we do not provide installation, we recommend customers reference and to find local installers/contractors near you. Our customers have found success looking for local installer on these sites. If you have any further questions please feel free to give us a call! Thank you.
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Why Choose Mitsubishi Mini Splits?
Why Choose Mitsubishi Mini Splits?

Mitsubishi Electric’s technologically advanced mini-split air conditioners and heat pumps can provide superior comfort, lower energy costs, zero emissions, and ultra-quiet heating and air conditioning in any climate.


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