MRCOOL DIY Mini Split – 21,000 BTU 2 Zone Ceiling Cassette Ductless Air Conditioner and Heat Pump with 16 ft. Install Kit, DIYM218HPC01C00
$5,306.00 Original price was: $5,306.00.$4,145.00Current price is: $4,145.00.
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The 4th Generation MRCOOL Ceiling Cassette Mini Split is an all-inclusive solution designed to provide efficient cooling and heating for two separate rooms. This system includes: a DIY 18,000 BTU Multi-Zone Condenser, one 9,000 BTU Ceiling Cassette Air Handler, one 12,000 BTU Ceiling Cassette Air Handler, two remotes, and two 16 ft. installation kits. This low-profile system eliminates the need for ductwork or wall space, allowing for discreet integration into any room. The best feature? You can handle the installation yourself, making it both convenient and cost-effective.
Package Contents:
- MRCOOL DIY Multi-Zone 2-Zone Condenser, 4th Gen Series (DIY-MULTI2-18HP230C)
- MRCOOL DIY Series 9K BTU Ceiling Cassette (DIYCASSETTE09HP-230C25)
- MRCOOL DIY Series 12K BTU Ceiling Cassette (DIYCASSETTE12HP-230C25)
- MRCOOL 16ft 1/4 x 1/2 Lineset for DIY 9K, 12K & 18K Indoor (DIY16-1412) (x2)
Note: When all air handlers are operated simultaneously, the total BTU output will not exceed the condenser’s 18,000 BTU rating.
Condenser Features:
- Energy Efficient:Â Paired with select MRCOOL air handlers, this 2-zone condenser delivers an outstanding 21 SEER efficiency rating.
- All-Weather Performance: Capable of heating even in temperatures as low as -13°F.
- Extended Warranty:Â Includes 7 years coverage for the condenser and 5 years for parts, providing added peace of mind.
9K BTU Air Handler (Quantity: 1):
- Coverage Area:Â Designed to efficiently cool or heat spaces up to 375 sq. ft.
- Versatile Modes:Â Offers multiple operating modes such as COOL, HEAT, AUTO, DRY, and SLEEP for optimal comfort control.
- Low-Profile Design:Â Fits seamlessly between 16″ centered joists, including pre-manufactured I-joists, for discreet operation.
- Simple Filter Maintenance:Â Activate the Elevation function on the remote to lower the filter panel, making maintenance a breeze.
12K BTU Air Handler (Quantity: 1):
- Coverage Area:Â Efficiently manages spaces up to 500 sq. ft.
- Versatile Modes:Â Like the 9K unit, this handler includes COOL, HEAT, AUTO, DRY, and SLEEP modes.
- Low-Profile Design:Â Easily integrates into any space with a discreet installation between joists.
- Easy Air Filter Access: Filter maintenance is simplified through the remote’s Elevation function.
Line Set (16 ft., Quantity: 2):
- Pre-Charged Convenience:Â The copper line sets come pre-charged with the correct amount of R-410A refrigerant, ensuring a hassle-free installation.
- DIY Installation:Â No certified technician required, allowing you to save on installation costs.
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Product Overview
 Covers 875 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 5F ~ 122F Heat Mode – Outdoor Operating Temperature Range -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 (Ceiling Cassette) 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
SleepAir Handler — 12K BTU (Ceiling Cassette) Product Dimensions 50.31″W x 13.19″D x 8.98″H Mount Type Ceiling Cassette 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″ -
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.

























