MRCOOL DIY Mini Split – 18,000 BTU 2 Zone Ceiling Cassette Ductless Air Conditioner and Heat Pump with 25 and 35 ft. Install Kit, DIYM218HPC00C08
$5,936.00 Original price was: $5,936.00.$4,397.00Current price is: $4,397.00.
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This 4th Generation MRCOOL DIY Mini Split System offers a comprehensive solution for both cooling and heating your space, whether it’s a home, office, or other area. The system package includes an 18K BTU Multi-Zone Condenser, two 9K BTU Ceiling Cassette Air Handlers, and all necessary accessories, such as a remote control, linesets, and communication wires for each air handler. The standout feature is its DIY-friendly installation, allowing you to set it up without the need for a professional HVAC technician or costly specialized tools.
Mini Split System Includes:
- MRCOOL DIY Multi-Zone 2-Zone 18K BTU Condenser, 4th Gen Series, SKU: DIY-MULTI2-18HP230C
- MRCOOL DIY Series 9K BTU Ceiling Cassette, SKU: DIYCASSETTE09HP-230C25 x 2
- MRCOOL 25ft 1/4 x 1/2 Pre-Charged Lineset for DIY 9K, 12K & 18K Indoor Units, SKU: DIY25-1412
- MRCOOL 35ft 1/4 x 1/2 Pre-Charged Lineset for DIY 9K, 12K & 18K Indoor Units, 4th Gen, SKU: DIY35-1412C
Condenser (18K BTU):
- Energy Efficient:Â The 18K BTU condenser delivers an impressive SEER2 efficiency rating of 21.2, making it eligible for significant savings through energy or tax rebates.
- Performance in Extreme Conditions: Capable of heating even when outdoor temperatures plummet to -13°F.
- Reliable:Â Backed by a 7-year compressor warranty and 5-year parts warranty, with the option to extend to a lifetime compressor warranty by enrolling in the MRCOOL Care Program.
Air Handler (9K BTU):
- Wide Coverage Area:Â Designed to effectively cover areas between 180 and 375 square feet.
- Highly Versatile:Â Equipped with multiple modes, including COOL, HEAT, AUTO, DRY (dehumidification), and SLEEP, offering adaptability to various conditions.
- Low-Profile Design:Â Ideal for discreet installations, this unit fits seamlessly between joists on 16″ centers, including pre-manufactured I-joists.
- Simple Maintenance:Â The innovative Elevation function lowers the filter panel for easy access to the air filter.
Lineset:
- Pre-Charged Convenience:Â Pre-charged with R-410A refrigerant, these linesets simplify installation by eliminating the need for additional charging.
- DIY Installation:Â By opting for this system, you can perform the installation yourself, avoiding the expense of hiring a certified technician and saving on overall costs.
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Product Overview
 Covers 750 sq. ft.      Â
 DIY Installation
  Ceiling 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 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 Cool Mode – Outdoor Operating Temperature Range 5°F ~ 122°F Heat Mode – Outdoor Operating Temperature Range -13°F ~ 75.2°F SEER2 21.2 EER2 12.5 HSPF2 9.6 Voltage 208V-230V / 60HZ / 18-25A Registered Warranty 7 Years Replacement on Condenser, 5 Years Parts Air Handler 9K BTU Product Dimensions 50.31″ W x 13.19″ D x 8.98″ H Mount Type Ceiling Cassette Cooling Capacity 9,000 BTU Heating Capacity 9,000 BTU Registered Warranty 5 Years Parts Modes Auto (Auto selects Cool, Heat or Fan-Only)
Cool
Heat
Dry
Fan Only
SleepLine Set Length 25 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
When considering the cooling or heating requirements for your space, it’s essential to refer to our coverage chart to determine the appropriate number of BTUs needed. Here’s a breakdown based on square footage:
- Square Feet: 180-375 | BTU = 9K
- Square Feet: 376-500 | BTU = 12K
- Square Feet: 501-750 | BTU = 18K
- Square Feet: 751-1,000 | BTU = 24K
- Square Feet: 1,001-1,500 | BTU = 36K
Keep in mind that various factors, such as insulation, ceiling height, and the presence of appliances, can impact performance. For personalized assistance, feel free to reach out to 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.

























