MRCOOL DIY Mini Split – 18,000 BTU 2 Zone Ceiling Cassette Ductless Air Conditioner and Heat Pump with 16 and 50 ft. Install Kit, DIYM218HPC00C04
$5,768.00 Original price was: $5,768.00.$4,444.00Current price is: $4,444.00.
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This 4th Generation MRCOOL DIY Mini Split system provides comprehensive cooling and heating solutions for homes, offices, and more. The package includes an 18K BTU Multi-Zone Condenser, two 9K BTU Ceiling Cassette Air Handlers with remote controls, linesets, and communication wires for each air handler. What sets this system apart is its DIY installation capability, eliminating the need for expensive HVAC technicians and specialized equipment.
Mini Split System Includes:
- MRCOOL DIY Multi-Zone 2-Zone 18K BTU Condenser, 4th Gen Series, DIY-MULTI2-18HP230C
- MRCOOL DIY Series 9K BTU Ceiling Cassette, DIYCASSETTE09HP-230C25 x 2
- MRCOOL 16ft 1/4 x 1/2 Pre-Charged Lineset for DIY 9K, 12K & 18K Indoor, DIY16-1412
- MRCOOL 50ft 1/4 x 1/2 Pre-Charged Lineset for DIY 9K, 12K & 18K Indoor, 4th Generation, DIY50-1412C
Condenser 18K BTU:
- Energy Efficient:Â Capable of an impressive 21.2 SEER2 efficiency rating, offering potential savings through energy or tax rebates.
- Extreme Temperature Operation: Can heat even when temperatures drop to -13°F.
- Warranty:Â Comes with a 7-year compressor and 5-year parts warranty. Lifetime coverage on the compressor is available by registering into the MRCOOL Care Program.
Air Handler 9K BTU:
- Vast Coverage:Â The cassette covers an area between 180 to 375 sq. ft.
- Versatility:Â Equipped with multiple operating modes including COOL, HEAT, AUTO, DRY (dehumidify), and SLEEP.
- Out of Sight Design:Â Features low-profile installation for discreet heating and cooling.
- Easy Installation:Â Can be easily installed between all types of joists on 16″ centers, including pre-manufactured I-joists.
- Air Filter Maintenance:Â The Elevation function allows for easy access to the air filter.
Line Set:
- Pre-Charged:Â Comes pre-charged with the precise amount of R-410A refrigerant.
- DIY Installation:Â Installation process can be performed without the need for a certified technician, saving money.
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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 1 Length 16 Feet Liquid Line Size 1/4″ Suction Line Size 1/2″ Line Set 2 Length 50 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.

























