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What Size MRCOOL Mini Split Do I Need?
MRCOOL Mini Split Line Set Length Limits
Discreet Comfort for Two Zones — MRCOOL DIY 5th Gen 12,000 BTU 2-Zone System with OuttaSight® Cassettes
Achieve perfect temperatures in two separate areas with the MRCOOL DIY 5th Gen 12k BTU 2-Zone Ductless Mini Split. This complete system pairs a versatile 18k multi-zone condenser with two OuttaSight® 6k ceiling cassette air handlers, delivering year-round heating and cooling for up to 400 square feet—no ductwork required. The flush-mounted cassettes disappear into the ceiling for a clean, unobtrusive look.
Coverage by Zone:
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6,000 BTU: Covers spaces up to 200 sq. ft. (bedroom, home office, nursery, small den)
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6,000 BTU: Covers spaces up to 200 sq. ft. (guest room, study, playroom, small living space)
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Total Coverage: 400 sq. ft.
True DIY Installation
Skip the expensive HVAC contractor. Patented Quick Connect® line sets come pre-charged with eco-friendly R-454B refrigerant, so installation is simple, tool-free, and DIY-friendly. The cassette fits neatly between 16" ceiling joists.
Discreet OuttaSight® Design
The one-way ceiling cassette mounts flush against the ceiling, keeping walls clear and preserving your room's aesthetics. Advanced filtration and an Elevation function make filter maintenance easy by lowering the panel for access.
Smart Control, Anywhere
Manage comfort from anywhere using the SmartHVAC app for iOS and Android. Adjust temperatures, set zone-specific schedules, or use voice commands with Amazon Alexa and Google Assistant.
Built to Last
The outdoor condenser features Gold Fin® anti-corrosion coating, ensuring durability in coastal or humid climates.
Key Features:
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23.9 SEER2 / 10 HSPF2 efficiency
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Individual zone control
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Quiet operation
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One-way ceiling cassette design
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Easy-access filter maintenance
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7-year compressor / 5-year parts warranty
Upgrade to discreet, zoned comfort—without the ductwork. The MRCOOL DIY 12k 2-Zone OuttaSight® system puts you in control.