MRCOOL DIY Mini Split – 21,000 BTU 2 Zone Ductless Air Conditioner and Heat Pump with 16 ft. and 35 ft. Install Kit, DIYM218HPW01C02
$3,334.00 Original price was: $3,334.00.$3,031.00Current price is: $3,031.00.
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The 4th Generation MRCOOL Mini Split is a comprehensive solution for heating and cooling two separate rooms. Included in this package are the DIY 18,000 BTU Multi-Zone Condenser, one 9,000 BTU Wall Mounted Air Handler, one 12,000 BTU Wall Mounted Air Handler, two remote controls, and installation kits measuring 16 ft. and 35 ft. The standout feature of this system is its self-installation capability, allowing you to set it up with ease. Enhanced Wi-Fi technology simplifies the installation process, making it quick and straightforward, while the MRCOOL DIY Multi is designed for flexible installation in almost any location without the need for specialized tools or costly equipment.
Package Includes:
- MRCOOL DIY Multi-Zone 2-Zone Condenser, 4th Gen Series, SKU: DIY-MULTI2-18HP230C
- MRCOOL DIY 4th Generation 9K BTU Wall Mount Air Handler 230 Volt with Enhanced WiFi, SKU: DIY-09-HP-WMAH-230C25
- MRCOOL DIY 4th Generation 12K BTU Wall Mount Air Handler 230 Volt with Enhanced WiFi, SKU: DIY-12-HP-WMAH-230C25
- MRCOOL 16ft 1/4 x 1/2 Lineset for DIY 9K, 12K & 18K Indoor, SKU: DIY16-1412
- MRCOOL DIY 35ft 1/4 x 1/2 Lineset for DIY 9K, 12K & 18K Indoor, 4th Generation, SKU: DIY35-1412C
Please note that if all air handlers are operated simultaneously, their total BTU output must not exceed the rating of the condenser. In this configuration, the combined BTU output of the air handlers will always remain within the 18K BTU capacity of the condenser.
Condenser
- Energy Efficient: This 2 Zone condenser, when paired with select MRCOOL air handlers, achieves an impressive SEER efficiency rating of 21.
- Works In All Environments: Capable of providing heat even at temperatures as low as 5°F.
- Lifetime Warranty: For additional peace of mind, this condenser includes a limited lifetime compressor warranty, the only one of its kind on the market. Simply register with the MRCOOL Care Program to activate the lifetime warranty!
Air Handler, 9K BTU, Quantity: 1
- Large Coverage Area: This handler effectively covers spaces of up to 375 sq. ft.
- Versatile: Highly adaptable, featuring multiple operating modes including COOL, HEAT, AUTO, DRY (dehumidify), and SLEEP.
- Easy to Control: The unit can be conveniently controlled via your Apple or Android smartphone using the Smart HVAC app.
- Convenient Installation: With its lightweight and compact design, installation on most interior walls is hassle-free with the included mounting plate.
Air Handler, 12K BTU, Quantity: 1
- Large Coverage Area: This handler effectively covers spaces of up to 500 sq. ft.
- Versatile: Highly adaptable, featuring multiple operating modes including COOL, HEAT, AUTO, DRY (dehumidify), and SLEEP.
- Easy to Control: The unit can be conveniently controlled via your Apple or Android smartphone using the Smart HVAC app.
- Convenient Installation: With its lightweight and compact design, installation on most interior walls is hassle-free with the included mounting plate.
Line Set 16 ft., Quantity: 1
This 16 ft. copper line set connects the MRCOOL condenser to the MRCOOL air handlers. In Multi-Zone systems, one line set is required for each indoor unit to ensure optimal functionality.
- Pre-Charged: Each line set comes pre-charged with the exact amount of R-410A refrigerant.
- DIY & Save Money: This feature allows for installation without the need for a certified technician, resulting in cost savings.
Line Set 35 ft., Quantity: 1
This 35 ft. copper line set connects the MRCOOL DIY condenser to the MRCOOL DIY air handlers. In Multi-Zone systems, one line set is required for each indoor unit to ensure optimal functionality.
- Pre-Charged: Each line set comes pre-charged with the exact amount of R-410A refrigerant.
- DIY & Save Money: This feature allows for installation without the need for a certified technician, resulting in cost savings.
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Product Overview
 Covers 875 sq. ft.      Â
 DIY Installation
 Wall Mounted        Â
  Number of Zones: 2
 Voltage: 208 to 230     Â
 Outdoor Operating Temp (Cool): 5°F to 122°F
 Outdoor Operating Temp (Heat): 5°F to 75.2°F
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What's Included
Air Handler

Condenser

Line Set

Wall Sleeve

Communication Wire

Remote Control
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Specifications and Dimensions
Condenser Specifications Product Dimensions 35.04″W x 13.46″D x 26.50″H Cooling Capacity 18,000 BTU Heating Capacity 19,000 BTU Zone Capacity 2 Min Ambient Cool 5F ~ 122F Min Ambient Heat -13F ~ 75.2F SEER 21 EER 12.5 Voltage Requires a minimum of 208V-230V/60HZ/18-25A Registered Warranty 7 Years Replacement on Condenser, 5 Years Parts Air Handler — 9K BTU Product Dimensions 31.57″W x 7.44″D x 11.69″H Mount Type Wall Cooling Capacity 9,000 BTU Heating Capacity 9,000 BTU Registered Warranty 5 Years Parts Modes Auto – auto selects from Cool, Heat or Fan-Only
Dry – dehumidify
Cool
Heat
Fan Only
Quiet
SleepAir Handler — 12K BTU Product Dimensions 31.57″W x 7.44″D x 11.69″H Mount Type Wall Cooling Capacity 12,000 BTU Heating Capacity 12,000 BTU Registered Warranty 5 Years Parts Modes Auto – auto selects from Cool, Heat or Fan-Only
Dry – dehumidify
Cool
Heat
Fan Only
Quiet
SleepLine Set Length 16 Feet Liquid Line Size 1/4″ Suction Line Size 1/2″ Line Set Length 35 Feet Liquid Line Size 1/4″ Suction Line Size 1/2″ -
Coverage Area
Please refer to the coverage chart below to determine the required BTUs for cooling or heating your desired area:
- Square Feet: 180-375 | BTU: 9K (SKU: 12345)
- Square Feet: 376-500 | BTU: 12K (SKU: 12346)
- Square Feet: 501-750 | BTU: 18K (SKU: 12347)
- Square Feet: 751-1,000 | BTU: 24K (SKU: 12348)
- Square Feet: 1,001-1,500 | BTU: 36K (SKU: 12349)
Please note that additional factors such as insulation, ceiling height, and the number of appliances in the room may affect performance. For further assistance, please contact our Sales Team.
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Handling Line Sets
When installing your MRCOOL system, handle refrigerant lines carefully to ensure optimal performance and prevent damage.
Bending the Copper Lines: Maintain a minimum 4-inch bend radius and use smooth curves instead of sharp angles to protect the lines and ensure proper refrigerant flow.
Avoid Repeated Bending: Bending copper lines more than three times can harden and weaken them, increasing the risk of breakage. Handle with care and minimize adjustments.
For best results, use gradual bends and consult a licensed professional or our support team if needed.

























