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18,000 BTU 20.5 SEER Wall Mounted Mitsubishi Mini-Split GS Single Zone Heat Pump - MZ-GS18NA



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AHRI Number:201754315

Suggested Retail $2,841.05 Your Low Price Special Price $2,699.00
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With its superior technology, Mitsubishi is considered one of the top brands of mini split on the market today. The MSZ-GS18NA / MUZ-GS18NA single-zone mini split lives up to Mitsubishi’s superior expectations, providing you superior comfort with a high efficiency.


  • Designed to be able to heat and cool a medium-sized room (in an ideal climate)
  • 18,000 BTU, 20.5 SEER
  • 230v electrical
  • Energy Star certified
  • Dry mode operation
18,000 BTU, 20.5 SEER

At 18,000 BTU, the MSZ-GS18NA / MUZ-GS18NA is generally suitable to heat and cool a medium-sized room in many climates. With a 20.5 SEER rating, the unit has a superior electrical efficiency than most central systems and is Energy Star certified. This efficiency combination makes it able to be installed across all mainland US states. Moreover, Mitsubishi’s special Econo Cool mode adjusts the cooling points on the air handler and sweeping vanes, improving both efficiency while providing faster temperature changes.


The MSZ-GS18NA / MUZ-GS18NA comes with Mitsubishi’s standard 5 year parts and 7 year compressor warranty out of the box, and when the installation follows your state and local codes and you register the unit online through the manufacturer, it becomes a 10 year parts and compressor warranty.

Durability and Reliability

The Mitsubishi MSZ-GS18NA / MUZ-GS18NA single-zone mini split has a Blue Fin condenser design, making it resistant to wind, dust, salt, and rust to exponentially extend its lifespan. The unit functions down to -4°F, allowing you to be able to rely on the unit when you need it most.

Superior Comfort

The Mitsubishi brand offers superior comfort to its customers, offering the MSZ-GS18NA / MUZ-GS18NA with its top-brand enhancements. The unit is a hot-start model, meaning that the unit will not blow cold air into the room if it calls for heat, waiting for the heat exchanger to be ready to heat prior to operation. The unit also offers a dry mode, providing an enhanced dehumidification over other brands.

Intelligent for Ease

Mitsubishi’s MSZ-GS18NA / MUZ-GS18NA mini split uses its Smart Set technology to provide a consistent temperature by variating airflow, direction, and air temperature output. When paired with the Kumo Cloud or one of the Cielo thermostats, the unit can connect to the Internet and you can control it from anywhere in the world that you have Internet access. The MSZ-GS18NA / MUZ-GS18NA’s air handler also uses its own air to heat itself up, quickly and efficiently providing heat to your home so that you are comfortable faster.

Health in Mind

Mitsubishi does not stop at a superior comfort; it is also concerned with the health of whomever uses the unit. The MSZ-GS18NA / MUZ-GS18NA single-zone mini split provides an advanced filtration system, combining deodorization, anti-allergen, and microbial break-down functions all in one, enhanced filtration system.

Product Specifications

More Information
18,000 BTU 20.5 SEER Wall Mounted Mitsubishi Mini-Split GS Single Zone Heat Pump - MZ-GS18NA
Refrigerant ChargePre-Charged For: 25'
Weight (in lbs)154.000000
AHRI Certificate Number201754315
ControllerWireless Included
Additional InformationHeat Pump
Additional InformationMaximum Line Set Length: 100'
Additional InformationDrain: 5/8"
HSPF2 10.3
Cooling BTU18,000 BTU
Heating BTU21,600 BTU
Maximum CFM297-646 CFM
Decibel Level (dBA)Indoor Unit: 28-49 | Outdoor Unit: 54-55
Energy StarYes
CapacityDehumidification Rate: 0.32 gal/hr
SEER1 (Efficiency)20
SEER2 (Efficiency)21.5
Liquid Line1/4"
Suction Line1/2"
Electrical208/230v 1 Phase 60 Hz
PhaseSingle Phase
Max Breaker Size15
Min. Breaker Size14
Amperage Requirement15
BTU/Tonnage18,000 BTU/1.5 Ton
Mini-Split TypeWall Mounted
Min/Max Outdoor Temp for Heating-4°-75°
Min/Max Outdoor Temp for Cooling14°-115°
Zone CompatibilitySingle Zone
Operating ModeCooling, Heating
HeightIndoor Unit: 12-13/16" | Outdoor Unit: 34-5/8"
WidthIndoor Unit: 43-5/16" | Outdoor Unit: 33-1/16"
DepthIndoor Unit: 9-3/8" | Outdoor Unit: 13"
Additional InfoIndoor Unit Weight: 22 lbs | Outdoor Unit Weight: 138 lbs
Warranty10 Years with Online Registration
Resources You will need Adobe® Acrobat® Reader to view PDF documents.
Safety InformationPROPOSITION 65 WARNING

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