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Understanding 55,000 BTU Mini Split Systems
A 55,000 BTU mini split system represents the higher end of residential capacity—designed for large homes, light commercial applications, or properties with extreme heating or cooling loads. The outdoor condenser powers the entire setup, distributing capacity across multiple indoor air handlers to cover significant square footage.
For example:
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A system may include (1) 24,000 BTU + (1) 18,000 BTU + (1) 12,000 BTU
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Or (2) 18,000 BTU + (2) 9,000 BTU for four zones
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Or a combination of floor-mounted, wall-mounted, and ceiling cassette units
For complex layouts and high-capacity planning, start with our Mini Split Sizing Guide.
This allows you to:
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Cover 4-6 zones with a single outdoor unit
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Handle demanding climates with high heating or cooling requirements
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Create a unified system for open concept layouts plus private rooms
Ideal for large homes, new construction, home additions with multiple rooms, or homeowners looking to replace an aging central HVAC system with zoned ductless comfort.
Understand total investment and savings in our Mini Split Cost Guide.
MRCOOL DIY 5th Gen 54,000 BTU 2-Zone Ductless Mini Split Air Conditioner & Heat Pump | 18k+36k Wall Mounted | Covers 2 Rooms, 2250 Sq Ft
$6,531.00 – $7,282.00Custom Comfort for Two Zones — MRCOOL DIY 5th Gen 54,000 BTU 2-Zone System Achieve perfect temperatures in two separate areas with the MRCOOL DIY 5th Gen 54k BTU 2-Zone...
MRCOOL DIY 5th Gen 51,000 BTU 3-Zone Ductless Mini Split with Heat Pump | 6k+9k+36k Wall Mounted | Covers 3 Rooms, Up to 2075 Sq Ft
$6,804.00 – $7,915.00Custom Comfort for Three Zones — MRCOOL DIY 5th Gen 51,000 BTU 3-Zone System Achieve perfect temperatures in three separate areas with the MRCOOL DIY 5th Gen 51k BTU 3-Zone...
MRCOOL DIY 5th Gen 51,000 BTU 3-Zone Ductless Mini Split with Heat Pump | 9k+18k+24k Wall Mounted | Covers 3 Rooms, Up to 2125 Sq Ft
$6,974.00 – $8,085.00Custom Comfort for Three Zones — MRCOOL DIY 5th Gen 51,000 BTU 3-Zone System Achieve perfect temperatures in three separate areas with the MRCOOL DIY 5th Gen 51k BTU 3-Zone...
MRCOOL DIY 5th Gen 54,000 BTU 3-Zone Ductless Mini Split with Heat Pump | 12k+18k+24k Wall Mounted | Covers 3 Rooms, Up to 2250 Sq Ft
$7,131.00 – $8,242.00Custom Comfort for Three Zones — MRCOOL DIY 5th Gen 54,000 BTU 3-Zone System Achieve perfect temperatures in three separate areas with the MRCOOL DIY 5th Gen 54k BTU 3-Zone...
MRCOOL DIY 5th Gen 54,000 BTU 3-Zone Ductless Mini Split with Heat Pump | 6k+24k+24k Wall Mounted | Covers 3 Rooms, Up to 2200 Sq Ft
$6,965.00 – $8,107.00Custom Comfort for Three Zones — MRCOOL DIY 5th Gen 54,000 BTU 3-Zone System Achieve perfect temperatures in three separate areas with the MRCOOL DIY 5th Gen 54k BTU 3-Zone...
MRCOOL DIY 5th Gen 54,000 BTU 3-Zone Ductless Mini Split with Heat Pump | 18k+18k+18k Wall Mounted | Covers 3 Rooms, Up to 2250 Sq Ft
$7,319.00 – $8,399.00Custom Comfort for Three Zones — MRCOOL DIY 5th Gen 54,000 BTU 3-Zone System Achieve perfect temperatures in three separate areas with the MRCOOL DIY 5th Gen 54k BTU 3-Zone...
MRCOOL DIY 5th Gen 54,000 BTU 3-Zone Ductless Mini Split with Heat Pump | 9k+9k+36k Wall Mounted | Covers 3 Rooms, Up to 2250 Sq Ft
$6,879.00 – $7,990.00Custom Comfort for Three Zones — MRCOOL DIY 5th Gen 54,000 BTU 3-Zone System Achieve perfect temperatures in three separate areas with the MRCOOL DIY 5th Gen 54k BTU 3-Zone...
MRCOOL DIY 5th Gen 54,000 BTU 3-Zone Ductless Mini Split with Heat Pump | 6k+12k+36k Wall Mounted | Covers 3 Rooms, Up to 2200 Sq Ft
$6,961.00 – $8,072.00Custom Comfort for Three Zones — MRCOOL DIY 5th Gen 54,000 BTU 3-Zone System Achieve perfect temperatures in three separate areas with the MRCOOL DIY 5th Gen 54k BTU 3-Zone...
MRCOOL DIY 5th Gen 51,000 BTU 4-Zone Ductless Mini Split with Heat Pump | 6k+9k+18k+18k Wall Mounted | Covers 4 Rooms, Up to 2075 Sq Ft
$7,592.00-$9,032.00Custom Comfort for Four Zones — MRCOOL DIY 5th Gen 51,000 BTU Multi-Zone System Achieve perfect temperatures in four separate areas with the MRCOOL DIY 5th Gen 51k BTU 4-Zone...
MRCOOL DIY 5th Gen 51,000 BTU 4-Zone Ductless Mini Split with Heat Pump | 6k+9k+12k+24k Wall Mounted | Covers 4 Rooms, Up to 2075 Sq Ft
$7,404.00-$8,875.00Custom Comfort for Four Zones — MRCOOL DIY 5th Gen 51,000 BTU Multi-Zone System Achieve perfect temperatures in four separate areas with the MRCOOL DIY 5th Gen 51k BTU 4-Zone...
MRCOOL DIY 5th Gen 51,000 BTU 4-Zone Ductless Mini Split with Heat Pump | 9k+12k+12k+18k Wall Mounted | Covers 4 Rooms, Up to 2125 Sq Ft
$7,570.00-$9,010.00Custom Comfort for Four Zones — MRCOOL DIY 5th Gen 51,000 BTU Multi-Zone System Achieve perfect temperatures in four separate areas with the MRCOOL DIY 5th Gen 51k BTU 4-Zone...
MRCOOL DIY 5th Gen 51,000 BTU 4-Zone Ductless Mini Split with Heat Pump | 9k+9k+9k+24k Wall Mounted | Covers 4 Rooms, Up to 2125 Sq Ft
$7,322.00-$8,793.00Custom Comfort for Four Zones — MRCOOL DIY 5th Gen 51,000 BTU Multi-Zone System Achieve perfect temperatures in four separate areas with the MRCOOL DIY 5th Gen 51k BTU 4-Zone...
MRCOOL DIY 5th Gen 54,000 BTU 4-Zone Ductless Mini Split with Heat Pump | 9k+9k+18k+18k Wall Mounted | Covers 4 Rooms, Up to 2250 Sq Ft
$7,667.00-$9,107.00Custom Comfort for Four Zones — MRCOOL DIY 5th Gen 54,000 BTU Multi-Zone System Achieve perfect temperatures in four separate areas with the MRCOOL DIY 5th Gen 54k BTU 4-Zone...
MRCOOL DIY 5th Gen 54,000 BTU 4-Zone Ductless Mini Split with Heat Pump | 9k+9k+12k+24k Wall Mounted | Covers 4 Rooms, Up to 2250 Sq Ft
$7,479.00-$8,950.00Custom Comfort for Four Zones — MRCOOL DIY 5th Gen 54,000 BTU Multi-Zone System Achieve perfect temperatures in four separate areas with the MRCOOL DIY 5th Gen 54k BTU 4-Zone...
MRCOOL DIY 5th Gen 54,000 BTU 4-Zone Ductless Mini Split with Heat Pump | 6k+12k+18k+18k Wall Mounted | Covers 4 Rooms, Up to 2200 Sq Ft
$7,749.00-$9,189.00Custom Comfort for Four Zones — MRCOOL DIY 5th Gen 54,000 BTU Multi-Zone System Achieve perfect temperatures in four separate areas with the MRCOOL DIY 5th Gen 54k BTU 4-Zone...
MRCOOL DIY 5th Gen 54,000 BTU 4-Zone Ductless Mini Split with Heat Pump | 6k+6k+18k+24k Wall Mounted | Covers 4 Rooms, Up to 2150 Sq Ft
$7,583.00-$9,054.00Custom Comfort for Four Zones — MRCOOL DIY 5th Gen 54,000 BTU Multi-Zone System Achieve perfect temperatures in four separate areas with the MRCOOL DIY 5th Gen 54k BTU 4-Zone...
MRCOOL DIY 5th Gen 54,000 BTU 4-Zone Ductless Mini Split with Heat Pump | 6k+6k+6k+36k Wall Mounted | Covers 4 Rooms, Up to 2100 Sq Ft
$7,413.00-$8,884.00Custom Comfort for Four Zones — MRCOOL DIY 5th Gen 54,000 BTU Multi-Zone System Achieve perfect temperatures in four separate areas with the MRCOOL DIY 5th Gen 54k BTU 4-Zone...
MRCOOL DIY 5th Gen 54,000 BTU 4-Zone Ductless Mini Split with Heat Pump | 12k+12k+12k+18k Wall Mounted | Covers 4 Rooms, Up to 2250 Sq Ft
$7,727.00-$9,167.00Custom Comfort for Four Zones — MRCOOL DIY 5th Gen 54,000 BTU Multi-Zone System Achieve perfect temperatures in four separate areas with the MRCOOL DIY 5th Gen 54k BTU 4-Zone...
MRCOOL DIY 5th Gen 51,000 BTU 5-Zone Ductless Mini Split with Heat Pump | 9k+9k+9k+12k+12k Wall Mounted | Covers 5 Rooms, Up to 2125 Sq Ft
$7,918.00-$9,718.00Custom Comfort for Five Zones — MRCOOL DIY 5th Gen 51,000 BTU Multi-Zone System Achieve perfect temperatures in five separate areas with the MRCOOL DIY 5th Gen 51k BTU 5-Zone...
MRCOOL DIY 5th Gen 51,000 BTU 5-Zone Ductless Mini Split with Heat Pump | 6k+9k+12k+12k+12k Wall Mounted | Covers 5 Rooms, Up to 2075 Sq Ft
$8,000.00-$9,800.00Custom Comfort for Five Zones — MRCOOL DIY 5th Gen 51,000 BTU Multi-Zone System Achieve perfect temperatures in five separate areas with the MRCOOL DIY 5th Gen 51k BTU 5-Zone...
MRCOOL DIY 5th Gen 51,000 BTU 5-Zone Ductless Mini Split with Heat Pump | 6k+9k+9k+9k+18k Wall Mounted | Covers 5 Rooms, Up to 2075 Sq Ft
$7,940.00-$9,740.00Custom Comfort for Five Zones — MRCOOL DIY 5th Gen 51,000 BTU Multi-Zone System Achieve perfect temperatures in five separate areas with the MRCOOL DIY 5th Gen 51k BTU 5-Zone...
MRCOOL DIY 5th Gen 51,000 BTU 5-Zone Ductless Mini Split with Heat Pump | 6k+6k+9k+12k+18k Wall Mounted | Covers 5 Rooms, Up to 2025 Sq Ft
$8,022.00-$9,822.00Custom Comfort for Five Zones — MRCOOL DIY 5th Gen 51,000 BTU Multi-Zone System Achieve perfect temperatures in five separate areas with the MRCOOL DIY 5th Gen 51k BTU 5-Zone...
MRCOOL DIY 5th Gen 51,000 BTU 5-Zone Ductless Mini Split with Heat Pump | 6k+6k+6k+9k+24k Wall Mounted | Covers 5 Rooms, Up to 1975 Sq Ft
$7,856.00-$9,687.00Custom Comfort for Five Zones — MRCOOL DIY 5th Gen 51,000 BTU Multi-Zone System Achieve perfect temperatures in five separate areas with the MRCOOL DIY 5th Gen 51k BTU 5-Zone...