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48,000 BTU Mini Split Systems

Understanding 48,000 BTU Mini Split Systems

A 48,000 BTU mini split system delivers powerful heating and cooling for larger homes, multi-story layouts, or properties with high BTU demands. The outdoor condenser serves as the central power source, distributing capacity across multiple indoor air handlers to meet room-specific needs.

For example:

  • A system may include (1) 18,000 BTU + (1) 18,000 BTU + (1) 12,000 BTU

  • Or (2) 24,000 BTU air handlers for two large zones

  • Or (4) 12,000 BTU air handlers for four separate rooms

Large systems require careful planning—use our Mini Split Sizing Guide to confirm your layout.

These systems allow you to:

  • Cover up to 4-5 zones with a single outdoor unit

  • Reduce equipment footprint compared to multiple separate systems

  • Achieve whole-home comfort without ductwork

Best for larger homes, new construction, multi-zone retrofits, or properties where running ductwork is impractical or cost-prohibitive.

See full installation considerations in our Mini Split Installation Guide.

MRCOOL DIY 5th Gen 42,000 BTU 4-Zone Ductless Mini Split with Heat Pump | 9k+9k+12k+12k Wall Mounted | Covers 4 Rooms, Up to 1750 Sq Ft

$6,578.00-$8,018.00

Custom Comfort for Four Zones — MRCOOL DIY 5th Gen 42,000 BTU Multi-Zone System Achieve perfect temperatures in four separate areas with the MRCOOL DIY 5th Gen 42k BTU 4-Zone...

MRCOOL DIY 5th Gen 45,000 BTU 4-Zone Ductless Mini Split with Heat Pump | 6k+9k+12k+18k Wall Mounted | Covers 4 Rooms, Up to 1825 Sq Ft

$6,757.00-$8,197.00

Custom Comfort for Four Zones — MRCOOL DIY 5th Gen 45,000 BTU Multi-Zone System Achieve perfect temperatures in four separate areas with the MRCOOL DIY 5th Gen 45k BTU 4-Zone...

MRCOOL DIY 5th Gen 45,000 BTU 4-Zone Ductless Mini Split with Heat Pump | 6k+6k+9k+24k Wall Mounted | Covers 4 Rooms, Up to 1775 Sq Ft

$6,591.00-$8,062.00

Custom Comfort for Four Zones — MRCOOL DIY 5th Gen 45,000 BTU Multi-Zone System Achieve perfect temperatures in four separate areas with the MRCOOL DIY 5th Gen 45k BTU 4-Zone...

MRCOOL DIY 5th Gen 45,000 BTU 4-Zone Ductless Mini Split with Heat Pump | 9k+9k+9k+18k Wall Mounted | Covers 4 Rooms, Up to 1875 Sq Ft

$6,675.00-$8,115.00

Custom Comfort for Four Zones — MRCOOL DIY 5th Gen 45,000 BTU Multi-Zone System Achieve perfect temperatures in four separate areas with the MRCOOL DIY 5th Gen 45k BTU 4-Zone...

MRCOOL DIY 5th Gen 45,000 BTU 4-Zone Ductless Mini Split with Heat Pump | 9k+12k+12k+12k Wall Mounted | Covers 4 Rooms, Up to 1875 Sq Ft

$6,735.00-$8,175.00

Custom Comfort for Four Zones — MRCOOL DIY 5th Gen 45,000 BTU Multi-Zone System Achieve perfect temperatures in four separate areas with the MRCOOL DIY 5th Gen 45k BTU 4-Zone...

MRCOOL DIY 5th Gen 48,000 BTU 4-Zone Ductless Mini Split with Heat Pump | 6k+12k+12k+18k Wall Mounted | Covers 4 Rooms, Up to 1950 Sq Ft

$6,914.00-$8,354.00

Custom Comfort for Four Zones — MRCOOL DIY 5th Gen 48,000 BTU Multi-Zone System Achieve perfect temperatures in four separate areas with the MRCOOL DIY 5th Gen 48k BTU 4-Zone...

MRCOOL DIY 5th Gen 48,000 BTU 4-Zone Ductless Mini Split with Heat Pump | 6k+9k+9k+24k Wall Mounted | Covers 4 Rooms, Up to 1950 Sq Ft

$6,666.00-$8,137.00

Custom Comfort for Four Zones — MRCOOL DIY 5th Gen 48,000 BTU Multi-Zone System Achieve perfect temperatures in four separate areas with the MRCOOL DIY 5th Gen 48k BTU 4-Zone...

MRCOOL DIY 5th Gen 48,000 BTU 4-Zone Ductless Mini Split with Heat Pump | 6k+6k+18k+18k Wall Mounted | Covers 4 Rooms, Up to 1900 Sq Ft

$6,936.00-$8,376.00

Custom Comfort for Four Zones — MRCOOL DIY 5th Gen 48,000 BTU Multi-Zone System Achieve perfect temperatures in four separate areas with the MRCOOL DIY 5th Gen 48k BTU 4-Zone...

MRCOOL DIY 5th Gen 48,000 BTU 4-Zone Ductless Mini Split with Heat Pump | 6k+6k+12k+24k Wall Mounted | Covers 4 Rooms, Up to 1900 Sq Ft

$6,748.00-$8,219.00

Custom Comfort for Four Zones — MRCOOL DIY 5th Gen 48,000 BTU Multi-Zone System Achieve perfect temperatures in four separate areas with the MRCOOL DIY 5th Gen 48k BTU 4-Zone...

MRCOOL DIY 5th Gen 48,000 BTU 4-Zone Ductless Mini Split with Heat Pump | 9k+9k+12k+18k Wall Mounted | Covers 4 Rooms, Up to 2000 Sq Ft

$6,832.00-$8,272.00

Custom Comfort for Four Zones — MRCOOL DIY 5th Gen 48,000 BTU Multi-Zone System Achieve perfect temperatures in four separate areas with the MRCOOL DIY 5th Gen 48k BTU 4-Zone...

MRCOOL DIY 5th Gen 48,000 BTU 4-Zone Ductless Mini Split with Heat Pump | 12k+12k+12k+12k Wall Mounted | Covers 4 Rooms, Up to 2000 Sq Ft

$6,892.00-$8,332.00

Custom Comfort for Four Zones — MRCOOL DIY 5th Gen 48,000 BTU Multi-Zone System Achieve perfect temperatures in four separate areas with the MRCOOL DIY 5th Gen 48k BTU 4-Zone...

MRCOOL DIY 5th Gen 39,000 BTU 5-Zone Ductless Mini Split with Heat Pump | 6k+6k+9k+9k+9k Wall Mounted | Covers 5 Rooms, Up to 1525 Sq Ft

$6,873.00-$8,673.00

Custom Comfort for Five Zones — MRCOOL DIY 5th Gen 39,000 BTU Multi-Zone System Achieve perfect temperatures in five separate areas with the MRCOOL DIY 5th Gen 39k BTU 5-Zone...

MRCOOL DIY 5th Gen 39,000 BTU 5-Zone Ductless Mini Split with Heat Pump | 6k+6k+6k+9k+12k Wall Mounted | Covers 5 Rooms, Up to 1475 Sq Ft

$6,955.00-$8,755.00

Custom Comfort for Five Zones — MRCOOL DIY 5th Gen 39,000 BTU Multi-Zone System Achieve perfect temperatures in five separate areas with the MRCOOL DIY 5th Gen 39k BTU 5-Zone...

MRCOOL DIY 5th Gen 42,000 BTU 5-Zone Ductless Mini Split with Heat Pump | 6k+9k+9k+9k+9k Wall Mounted | Covers 5 Rooms, Up to 1700 Sq Ft

$6,948.00-$8,748.00

Custom Comfort for Five Zones — MRCOOL DIY 5th Gen 42,000 BTU Multi-Zone System Achieve perfect temperatures in five separate areas with the MRCOOL DIY 5th Gen 42k BTU 5-Zone...

MRCOOL DIY 5th Gen 42,000 BTU 5-Zone Ductless Mini Split with Heat Pump | 6k+6k+9k+9k+12k Wall Mounted | Covers 5 Rooms, Up to 1650 Sq Ft

$7,030.00-$8,830.00

Custom Comfort for Five Zones — MRCOOL DIY 5th Gen 42,000 BTU Multi-Zone System Achieve perfect temperatures in five separate areas with the MRCOOL DIY 5th Gen 42k BTU 5-Zone...

MRCOOL DIY 5th Gen 42,000 BTU 5-Zone Ductless Mini Split with Heat Pump | 6k+6k+6k+6k+18k Wall Mounted | Covers 5 Rooms, Up to 1550 Sq Ft

$7,134.00-$8,934.00

Custom Comfort for Five Zones — MRCOOL DIY 5th Gen 42,000 BTU Multi-Zone System Achieve perfect temperatures in five separate areas with the MRCOOL DIY 5th Gen 42k BTU 5-Zone...

MRCOOL DIY 5th Gen 42,000 BTU 5-Zone Ductless Mini Split with Heat Pump | 6k+6k+6k+12k+12k Wall Mounted | Covers 5 Rooms, Up to 1600 Sq Ft

$7,112.00-$8,912.00

Custom Comfort for Five Zones — MRCOOL DIY 5th Gen 42,000 BTU Multi-Zone System Achieve perfect temperatures in five separate areas with the MRCOOL DIY 5th Gen 42k BTU 5-Zone...

MRCOOL DIY 5th Gen 45,000 BTU 5-Zone Ductless Mini Split with Heat Pump | 6k+6k+9k+12k+12k Wall Mounted | Covers 5 Rooms, Up to 1775 Sq Ft

$7,187.00-$8,987.00

Custom Comfort for Five Zones — MRCOOL DIY 5th Gen 45,000 BTU Multi-Zone System Achieve perfect temperatures in five separate areas with the MRCOOL DIY 5th Gen 45k BTU 5-Zone...

MRCOOL DIY 5th Gen 45,000 BTU 5-Zone Ductless Mini Split with Heat Pump | 6k+9k+9k+9k+12k Wall Mounted | Covers 5 Rooms, Up to 1825 Sq Ft

$7,105.00-$8,905.00

Custom Comfort for Five Zones — MRCOOL DIY 5th Gen 45,000 BTU Multi-Zone System Achieve perfect temperatures in five separate areas with the MRCOOL DIY 5th Gen 45k BTU 5-Zone...

MRCOOL DIY 5th Gen 45,000 BTU 5-Zone Ductless Mini Split with Heat Pump | 6k+6k+6k+9k+18k Wall Mounted | Covers 5 Rooms, Up to 1725 Sq Ft

$7,209.00-$9,009.00

Custom Comfort for Five Zones — MRCOOL DIY 5th Gen 45,000 BTU Multi-Zone System Achieve perfect temperatures in five separate areas with the MRCOOL DIY 5th Gen 45k BTU 5-Zone...

MRCOOL DIY 5th Gen 45,000 BTU 5-Zone Ductless Mini Split with Heat Pump | 9k+9k+9k+9k+9k Wall Mounted | Covers 5 Rooms, Up to 1875 Sq Ft

$7,023.00-$8,823.00

Custom Comfort for Five Zones — MRCOOL DIY 5th Gen 45,000 BTU Multi-Zone System Achieve perfect temperatures in five separate areas with the MRCOOL DIY 5th Gen 45k BTU 5-Zone...

MRCOOL DIY 5th Gen 48,000 BTU 5-Zone Ductless Mini Split with Heat Pump | 6k+9k+9k+12k+12k Wall Mounted | Covers 5 Rooms, Up to 1950 Sq Ft

$7,262.00-$9,062.00

Custom Comfort for Five Zones — MRCOOL DIY 5th Gen 48,000 BTU Multi-Zone System Achieve perfect temperatures in five separate areas with the MRCOOL DIY 5th Gen 48k BTU 5-Zone...

MRCOOL DIY 5th Gen 48,000 BTU 5-Zone Ductless Mini Split with Heat Pump | 6k+6k+12k+12k+12k Wall Mounted | Covers 5 Rooms, Up to 1900 Sq Ft

$7,344.00-$9,144.00

Custom Comfort for Five Zones — MRCOOL DIY 5th Gen 48,000 BTU Multi-Zone System Achieve perfect temperatures in five separate areas with the MRCOOL DIY 5th Gen 48k BTU 5-Zone...

MRCOOL DIY 5th Gen 48,000 BTU 5-Zone Ductless Mini Split with Heat Pump | 6k+6k+9k+9k+18k Wall Mounted | Covers 5 Rooms, Up to 1900 Sq Ft

$7,284.00-$9,084.00

Custom Comfort for Five Zones — MRCOOL DIY 5th Gen 48,000 BTU Multi-Zone System Achieve perfect temperatures in five separate areas with the MRCOOL DIY 5th Gen 48k BTU 5-Zone...

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