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Mitsubishi 42,000 BTU FS-Series 19.7 SEER2 Three Zone Wall Mounted Mini Split Heat Pump System – R410A | 230V - 18 + 18 +18

Mitsubishi 42,000 BTU FS-Series 19.7 SEER2 Three Zone Wall Mounted Mini Split Heat Pump System – R410A | 230V - 18 + 18 +18

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By

Mitsubishi

Out of stock

Model

MXZ-5C42NA2 / 3-MSZ-FS18NA

ID

221095

No Return Policy: All sales of this product are final and are non-refundable.

MXZ-5C42NA2 / 3-MSZ-FS18NA is a high-efficiency Mitsubishi Electric multi-zone mini-split heat pump system. It features a 42,000 BTU Hyper-Heating outdoor unit (MXZ-5C42NA2) paired with two indoor Wall Mounted units: a (3) 18,000 BTU (MSZ-FS18NA). This setup delivers quiet, zoned comfort with advanced inverter technology, ideal for year-round heating and cooling even in cold climates.

Featuring Hyper-Heating INVERTER (H2i) technology, the outdoor unit delivers reliable performance even in extreme cold, ensuring consistent warmth when you need it most. The sleek, wall-mounted indoor units offer whisper-quiet operation, advanced air filtration, and modern design that blends seamlessly into any home.

Whether you're cooling a bedroom and living area in summer or heating your home in winter, this system delivers year-round comfort, exceptional energy savings, and total control at your fingertips.

Important Notice: R-410A Direct Replacement Only

Effective January 1, 2026, R-410A systems are restricted to direct replacement use only under applicable regulations. New installations are not permitted.

By purchasing this product, you confirm that it is intended only as a direct replacement for an existing R-410A system and that you understand and will comply with all applicable federal, state, and local regulations.

The seller assumes no responsibility or liability for purchases or installations that do not comply with these requirements, including improper application, misuse, or regulatory violations.

Refrigerant Line Set with 1/4" and 1/2" Line Ends - 15 feet

Refrigerant line set (pair) for mini split systems, liquid line size 1/4 inch O.D. flared ends, suction line size 1/2 inch O.D. flared ends, length 15 feet, insulation thickness of 1/2 inch. For use with air conditioning and refrigeration systems, includes both the liquid line and the suction line.

Features:

  • One pair, heavy duty refrigerant lines
  • Flared line ends
Condenser Risers - 4" x 18" - 2 Pack

Provides simple and secure mounting for small and large piping systems, ductwork runs, cable trays and smaller equipment such as condensers. Linear track offers adjustable mounting. Manufactured from exterior grade materials.

Features

  • Ideal for piping, duct runs, cable trays and condensers
  • Weather resistant PVC
  • Linear track holds 3/8" hex head bolts
  • Two 7/8" long bolts included
  • Weighs up to 397 Ib
I understand that this system should only be used as replacement units due to EPA updates and may not be installed as a complete system.
Refrigerant Line Set with 1/4" and 1/2" Line Ends - 30 feet

Refrigerant line set (pair) for mini split systems, liquid line size 1/4 inch O.D. flared ends, suction line size 1/2 inch O.D. flared ends, length 30 feet, insulation thickness of 1/2 inch. For use with air conditioning and refrigeration systems, includes both the liquid line and the suction line.

Features:

  • One pair, heavy duty refrigerant lines
  • Flared line ends
Equipment Pad and Risers Kit

E Lite Condenser Pad and Risers

E Lite Condenser Pad

E Lite Condenser Pad is designed to provide solid support for air conditioning condensers. It's made from sturdy polypropylene, striking a balance between lightness and stability. Its robust design ensures a level ground without the need for extra components.

Key Features:

  • Reliable Support: Abundance of ridges for stable ground support.
  • Durable and Lightweight: Tough yet not excessively heavy, thanks to polypropylene construction.
  • Anti-Slip: The surface prevents slipping, and rounded edges enhance safety.
  • Simple Appearance: Gray color with size labels.
  • Versatile Use: Suitable for condensers, pipes, ducts, cables, and more.

E Lite Risers

E Lite Risers complement the Condenser Pad, allowing you to adjust your setup as needed. They are constructed from weather-resistant PVC for outdoor use.

Key Features:

  • Weather Resistance: Made from tough PVC for long-lasting performance.
  • Secure Setup: The track securely holds bolts in place.
  • Bolts Included: Each set comes with two bolts.
  • Strong Support: Capable of handling loads of up to 397 pounds.

E Lite Condenser Pad and Risers offer reliable support without any complications. They are built to last and deliver efficient performance. Consider E Lite for your support needs – it's a practical solution for your projects.

No Return Policy

All sales of this product are final and are non-refundable.

I understand that this system cannot be returned.
Refrigerant Line Set with 1/4" and 1/2" Line Ends - 50 feet

Refrigerant line set (pair) for mini split systems, liquid line size 1/4 inch O.D. flared ends, suction line size 1/2 inch O.D. flared ends, length 50 feet, insulation thickness of 1/2 inch. For use with air conditioning and refrigeration systems, includes both the liquid line and the suction line.

Features:

  • One pair, heavy duty refrigerant lines
  • Flared line ends
Refrigerant Line Set with 1/4" and 1/2" Line Ends - 25 feet

Refrigerant line set (pair) for mini split systems, liquid line size 1/4 inch O.D. flared ends, suction line size 1/2 inch O.D. flared ends, length 25 feet, insulation thickness of 1/2 inch. For use with air conditioning and refrigeration systems, includes both the liquid line and the suction line.

Features:

  • One pair, heavy duty refrigerant lines
  • Flared line ends
Refrigerant Line Set with 1/4" and 1/2" Line Ends - 35 feet

Refrigerant line set (pair) for mini split systems, liquid line size 1/4 inch O.D. flared ends, suction line size 1/2 inch O.D. flared ends, length 35 feet, insulation thickness of 1/2 inch. For use with air conditioning and refrigeration systems, includes both the liquid line and the suction line.

Features:

  • One pair, heavy duty refrigerant lines
  • Flared line ends
More Information
Mitsubishi 18,000 BTU R410A FS Series Multi Zone Wall Mounted Mini Split Air Handler - 230V
FeatureSpec
SKUMSZ-FS18NA
Weight (in lbs)29
Brand/ManufacturerMitsubishi
UPC622632150108
ControllerWireless Included
Additional InformationDrain: 5/8"
Cooling BTU17,200
Heating BTU20,300
Maximum CFM194-514 CFM
Decibel Level (dBA)25-47
RefrigerantR410A
CapacityDehumidification Rate: 0.32 gal/hr
Liquid Line1/4"
Suction Line1/2"
Electrical208/230V 1 Phase 60 Hz
PhaseSingle Phase
BTU/Tonnage18,000 BTU/1.5 Ton
Mini Split TypeWall Mounted
Zone CompatibilityMulti Zone
Operating ModeCooling, Heating
Height12-11/16"
Width36-7/16"
Depth9-3/16"
Warranty10 Years with Online Registration
Resources You will need Adobe® Acrobat® Reader to view PDF documents.
Safety InformationPROPOSITION 65 WARNING
Mitsubishi 18,000 BTU R410A FS Series Multi Zone Wall Mounted Mini Split Air Handler - 230V
FeatureSpec
SKUMSZ-FS18NA
Weight (in lbs)29
Brand/ManufacturerMitsubishi
UPC622632150108
ControllerWireless Included
Additional InformationDrain: 5/8"
Cooling BTU17,200
Heating BTU20,300
Maximum CFM194-514 CFM
Decibel Level (dBA)25-47
RefrigerantR410A
CapacityDehumidification Rate: 0.32 gal/hr
Liquid Line1/4"
Suction Line1/2"
Electrical208/230V 1 Phase 60 Hz
PhaseSingle Phase
BTU/Tonnage18,000 BTU/1.5 Ton
Mini Split TypeWall Mounted
Zone CompatibilityMulti Zone
Operating ModeCooling, Heating
Height12-11/16"
Width36-7/16"
Depth9-3/16"
Warranty10 Years with Online Registration
Resources You will need Adobe® Acrobat® Reader to view PDF documents.
Safety InformationPROPOSITION 65 WARNING
Mitsubishi 42,000 BTU R410A M-Series Single Zone Mini Split Heat Pump Condenser - 230V
FeatureSpec
SKUMXZ-5C42NA2
Weight (in lbs)283
AHRI Certificate Number201754913
Brand/ManufacturerMitsubishi
Cooling BTU42,000 BTU
Heating BTU42,000 BTU
Decibel Level (dBA)56-58
RefrigerantR410A
SEER1 (Efficiency)19
EER9.2
Compressor TypeTwin Rotary
Liquid Valve Size1/4
Suction Valve SizeA:1/2 (12.7) ; B,C,D,E: 3/8 (9.52)
Electrical208/230V 1 Phase 60 Hz
Max Breaker Size40
Min. Breaker Size32.5
BTU/Tonnage42,000 BTU/3.5 Ton
Zone CompatibilityMulti Zone
Height41.28"
Width37.411"
Depth13"
Warranty10 Years with Online Registration
Resources You will need Adobe® Acrobat® Reader to view PDF documents.
Mitsubishi 18,000 BTU R410A FS Series Multi Zone Wall Mounted Mini Split Air Handler - 230V
FeatureSpec
SKUMSZ-FS18NA
Weight (in lbs)29
Brand/ManufacturerMitsubishi
UPC622632150108
ControllerWireless Included
Additional InformationDrain: 5/8"
Cooling BTU17,200
Heating BTU20,300
Maximum CFM194-514 CFM
Decibel Level (dBA)25-47
RefrigerantR410A
CapacityDehumidification Rate: 0.32 gal/hr
Liquid Line1/4"
Suction Line1/2"
Electrical208/230V 1 Phase 60 Hz
PhaseSingle Phase
BTU/Tonnage18,000 BTU/1.5 Ton
Mini Split TypeWall Mounted
Zone CompatibilityMulti Zone
Operating ModeCooling, Heating
Height12-11/16"
Width36-7/16"
Depth9-3/16"
Warranty10 Years with Online Registration
Resources You will need Adobe® Acrobat® Reader to view PDF documents.
Safety InformationPROPOSITION 65 WARNING
Condenser Risers - 4" x 18" - 2 Pack
FeatureSpec
SKU87762
Weight (in lbs)5
Brand/ManufacturerOnline Supply
Refrigerant Line Set with 1/4" and 1/2" Line Ends - 35 feet
FeatureSpec
SKU366401
Weight (in lbs)35
Brand/ManufacturerOnline Supply
UPCna
Length15'
Height1/2"
Width1/2"
Safety InformationPROPOSITION 65 WARNING
Refrigerant Line Set with 1/4" and 1/2" Line Ends - 25 feet
FeatureSpec
SKU366400
Weight (in lbs)25
Brand/ManufacturerOnline Supply
UPCna
Length25'
Height1/2"
Width1/2"
Safety InformationPROPOSITION 65 WARNING
Refrigerant Line Set with 1/4" and 1/2" Line Ends - 50 feet
FeatureSpec
SKU366402
Weight (in lbs)45
Brand/ManufacturerOnline Supply
UPCna
Length50'
Height1/2"
Width1/2"
Safety InformationPROPOSITION 65 WARNING
Refrigerant Line Set with 1/4" and 1/2" Line Ends - 30 feet
FeatureSpec
SKU216741
Weight (in lbs)30
Brand/ManufacturerOnline Supply
UPCna
Length30'
Height1/2"
Width1/2"
Safety InformationPROPOSITION 65 WARNING
Refrigerant Line Set with 1/4" and 1/2" Line Ends - 15 feet
FeatureSpec
SKU201814
Weight (in lbs)15
Brand/ManufacturerOnline Supply
UPCna
Length15'
Height1/2"
Width1/2"
Safety InformationPROPOSITION 65 WARNING
Refrigerant Line Set with 1/4" and 1/2" Line Ends - 15 feet
FeatureSpec
SKU201814
Weight (in lbs)15
Brand/ManufacturerOnline Supply
UPCna
Length15'
Height1/2"
Width1/2"
Safety InformationPROPOSITION 65 WARNING
E Lite Equipment Pad and Risers Kit 18" x 38" x 3"
FeatureSpec
SKU87762 / EL1838-3
Weight (in lbs)25
Brand/ManufacturerOnline Supply
UPCna
Height3"
Width18"
Depth38"
Safety InformationPROPOSITION 65 WARNING
Refrigerant Line Set with 1/4" and 1/2" Line Ends - 30 feet
FeatureSpec
SKU216741
Weight (in lbs)30
Brand/ManufacturerOnline Supply
UPCna
Length30'
Height1/2"
Width1/2"
Safety InformationPROPOSITION 65 WARNING
Refrigerant Line Set with 1/4" and 1/2" Line Ends - 35 feet
FeatureSpec
SKU366401
Weight (in lbs)35
Brand/ManufacturerOnline Supply
UPCna
Length15'
Height1/2"
Width1/2"
Safety InformationPROPOSITION 65 WARNING
Refrigerant Line Set with 1/4" and 1/2" Line Ends - 25 feet
FeatureSpec
SKU366400
Weight (in lbs)25
Brand/ManufacturerOnline Supply
UPCna
Length25'
Height1/2"
Width1/2"
Safety InformationPROPOSITION 65 WARNING
Refrigerant Line Set with 1/4" and 1/2" Line Ends - 50 feet
FeatureSpec
SKU366402
Weight (in lbs)45
Brand/ManufacturerOnline Supply
UPCna
Length50'
Height1/2"
Width1/2"
Safety InformationPROPOSITION 65 WARNING
Refrigerant Line Set with 1/4" and 1/2" Line Ends - 30 feet
FeatureSpec
SKU216741
Weight (in lbs)30
Brand/ManufacturerOnline Supply
UPCna
Length30'
Height1/2"
Width1/2"
Safety InformationPROPOSITION 65 WARNING
Refrigerant Line Set with 1/4" and 1/2" Line Ends - 15 feet
FeatureSpec
SKU201814
Weight (in lbs)15
Brand/ManufacturerOnline Supply
UPCna
Length15'
Height1/2"
Width1/2"
Safety InformationPROPOSITION 65 WARNING
Refrigerant Line Set with 1/4" and 1/2" Line Ends - 35 feet
FeatureSpec
SKU366401
Weight (in lbs)35
Brand/ManufacturerOnline Supply
UPCna
Length15'
Height1/2"
Width1/2"
Safety InformationPROPOSITION 65 WARNING
Refrigerant Line Set with 1/4" and 1/2" Line Ends - 25 feet
FeatureSpec
SKU366400
Weight (in lbs)25
Brand/ManufacturerOnline Supply
UPCna
Length25'
Height1/2"
Width1/2"
Safety InformationPROPOSITION 65 WARNING
Refrigerant Line Set with 1/4" and 1/2" Line Ends - 50 feet
FeatureSpec
SKU366402
Weight (in lbs)45
Brand/ManufacturerOnline Supply
UPCna
Length50'
Height1/2"
Width1/2"
Safety InformationPROPOSITION 65 WARNING
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Why Choose Mitsubishi Mini Splits?
Why Choose Mitsubishi Mini Splits?

Mitsubishi mini split air conditioners and heat pumps provide exceptional comfort, energy efficiency, and ultra-quiet performance in any climate. Engineered for reliability and precision, these systems offer year-round heating and cooling while reducing energy costs and enhancing indoor air quality.

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