MRCOOL DIY Mini Split – 18,000 BTU 2 Zone Ceiling Cassette Ductless Air Conditioner and Heat Pump with 16 ft. Install Kit, DIYM218HPC00C00
$5,795.00 Original price was: $5,795.00.$4,136.00Current price is: $4,136.00.
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This 4th Generation MRCOOL Ceiling Cassette Mini Split system provides a comprehensive heating and cooling solution for two separate rooms. The package includes the DIY 18,000 BTU Multi-Zone Condenser, two 9,000 BTU Ceiling Cassette Air Handlers, two remotes, and two 16 ft. installation kits. This system offers a discreet, low-profile alternative to traditional ductwork or wall-mounted units, fitting seamlessly into any room. Best of all, the system is designed for DIY installation, making it an accessible and cost-effective option.
Package Includes:
- MRCOOL DIY Multi-Zone 2-Zone Condenser, 4th Gen Series (DIY-MULTI2-18HP230C)
- MRCOOL DIY Series 9K BTU Ceiling Cassette (DIYCASSETTE09HP-230C25) – 2 units
- MRCOOL 16ft 1/4 x 1/2 Lineset for DIY 9K, 12K & 18K Indoor (DIY16-1412) – 2 units
Condenser:
- Energy Efficient:Â Paired with compatible MRCOOL air handlers, this two-zone condenser achieves an exceptional SEER rating of up to 21.
- Performance in Extreme Conditions: Capable of heating effectively in temperatures as low as -13°F.
- Warranty:Â Includes a 7-year warranty for condenser replacement and a 5-year warranty on parts, ensuring long-term reliability.
Air Handler – 9K BTU (2 units):
- Coverage:Â Each air handler covers up to 375 square feet.
- Operational Flexibility:Â Offers multiple operating modes, including COOL, HEAT, AUTO, DRY (dehumidify), and SLEEP, ensuring year-round comfort.
- Discreet Installation:Â Designed for low-profile, out-of-sight installation, fitting easily between joists spaced 16 inches apart, including pre-manufactured I-joists.
- Easy Maintenance:Â With the Elevation function on the remote or smart controller, the filter panel lowers for easy access and maintenance.
Line Set – 16 ft. (2 units):
- Pre-Charged for Convenience:Â Each copper line set is pre-charged with the exact amount of R-410A refrigerant.
- DIY Installation:Â Designed for easy, DIY installation, eliminating the need for a certified technician and saving you 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 SEER 21 EER 12.5 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 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″ -
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.

























