MRCOOL DIY Multi-Zone 5th Generation 48K BTU Two Zone Ductless Mini Split – A Heating and AC System You Can Install By Yourself!
Heat or cool two mid-to-large rooms with the MRCOOL DIY Multi-Zone 48,000 BTU 22 SEER2 2 Zone Ductless Heat Pump Split System – 18K + 18K. This 5th Gen DIY Series system is designed for easy installation with no special tools or HVAC training required. You’ll save thousands on labor while enjoying powerful comfort in two spaces. This setup includes two 18,000 BTU air handlers, each capable of efficiently heating or cooling up to 750 square feet. As a heat pump, the system can reverse to provide warmth in the winter, and it's backed by a 7-year compressor warranty (plus an optional limited lifetime compressor warranty) and a 5-year parts warranty!
MRCOOL DIY 5th Gen Multizone 48,000 BTU systems can support up to FIVE indoor units.
The MRCOOL DIY Multi-Zone 48,000 BTU 22 SEER2 2 Zone Ductless Heat Pump Split System – 18K + 18K makes installation simple. The system uses pre-charged Quick Connect lines with R-454B refrigerant, which is EPA-compliant and environmentally safer than previous generations. No vacuum or refrigerant charging is necessary—just connect and go. Easy-to-follow instructions and video guides are available to help you every step of the way.
This system handles all seasons with ease: cooling in summer, heating in winter, and dehumidifying during humid months. Each air handler displays temperature and diagnostics on an LED panel, and the system can be controlled via remote or the MRCOOL Smart Controller app, available for iOS and Android. It also works with Amazon Alexa and Google Home for voice-activated control.
The directional airflow from each 18K air handler ensures even comfort throughout the room. Manual operation is available behind the front panel in case of emergency or maintenance.
In auto mode, the system adjusts based on your preferred temperature. The dry mode offers dehumidification while keeping the space comfortable.
Sleep mode allows for energy-saving overnight operation by gradually adjusting the temperature across an 8-hour cycle.
The MRCOOL DIY Multi-Zone 48,000 BTU 22 SEER2 Two-Zone Ductless Heat Pump Split Air Conditioner System – 18K + 18K offers flexibility, energy efficiency, and user-friendly controls. Use the programmable timer to reduce power usage. Low refrigerant alerts and diagnostic codes appear clearly on the air handler’s display. Muting features allow you to turn off audible alerts and LED displays for quieter spaces. In the event of a power outage, the system automatically resumes previous settings upon restart.
Maintenance is easy with built-in reminders and simple-to-clean indoor units. A quick wipe and periodic filter checks keep your system running at its best.
Features:
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Easy DIY® Installation
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Pre-charged DIY® Quick Connect Line Set
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Uses Eco-Friendly R-454B Refrigerant (EPA 2025 Compliant)
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Multi-room Comfort
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Energy Efficient DC Inverter
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100% Sealed System
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Gold Fin® Condenser
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Smartphone App Controls
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Lifetime Technical Support
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Follow Me® Feature
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Low Ambient Cooling
