MRCOOL DIY Mini Split – 42,000 BTU 4 Zone Ceiling Cassette Ductless Air Conditioner and Heat Pump, DIY-BC-448HP09091212
$9,425.00 Original price was: $9,425.00.$7,540.00Current price is: $7,540.00.
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This 4th Generation MRCOOL Mini Split system includes a DIY 48,000 BTU Multi-Zone Condenser, two 9,000 BTU Ceiling Cassette Air Handlers, two 12,000 BTU Ceiling Cassette Air Handlers, and four remotes. The best part is that you can install it yourself!
Package Includes:
- MRCOOL DIY Multi Zone 5-Zone 48K BTU Condenser, 4th Gen Series (DIY-MULTI5-48HP230C)
- MRCOOL DIY Series 9K BTU Ceiling Cassette (DIYCASSETTE09HP-230C25) – Quantity: 2
- MRCOOL DIY Series 12K BTU Ceiling Cassette (DIYCASSETTE12HP-230C25) – Quantity: 2
Note: This package does not include linesets. Please ensure to scroll up and add them!
Condenser:
- Energy Efficient:Â This 5-zone condenser, when paired with select MRCOOL air handlers, is capable of achieving an impressive 20.5 SEER efficiency rating.
- Works in All Environments: Delivers consistent heating performance even when temperatures drop to -13°F.
- Lifetime Warranty:Â For added peace of mind, this is the only condenser on the market that comes with a limited lifetime compressor warranty. Simply register in the MRCOOL Care Program to receive the lifetime warranty.
Air Handler, 9K BTU, Quantity: 2
- Large Coverage Area:Â Each handler covers an area up to 375 sq. ft.
- Versatile:Â Equipped with multiple operating modes, including COOL, HEAT, AUTO, DRY (dehumidify), and SLEEP.
- Out of Sight Design:Â Features a low-profile installation for discreet heating and cooling.
- Worry-Free Installation:Â Easily installs between all types of joists on 16″ centers, including pre-manufactured I-joists.
- Easy Air Filter Access:Â Activate the Elevation function on the remote controller (or smart controller) to lower the filter panel for easy maintenance.
Air Handler, 12K BTU, Quantity: 2
- Large Coverage Area:Â Each handler covers an area up to 500 sq. ft.
- Versatile:Â Equipped with multiple operating modes, including COOL, HEAT, AUTO, DRY (dehumidify), and SLEEP.
- Out of Sight Design:Â Features a low-profile installation for discreet heating and cooling.
- Worry-Free Installation:Â Easily installs between all types of joists on 16″ centers, including pre-manufactured I-joists.
- Easy Air Filter Access:Â Activate the Elevation function on the remote controller (or smart controller) to lower the filter panel for easy maintenance.
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Product Overview
 Covers 1750 sq. ft.      Â
 DIY Installation
  Ceiling Mounted       Â
  Number of Zones: 4
 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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Specifications and Dimensions
Condenser Product Dimensions 37.48″W x 16.34″D x 52.48″H Cooling Capacity 48,000 BTU Heating Capacity 48,000 BTU Zone Capacity 5 Cool Mode – Outdoor Operating Temperature Range 5F ~ 122F Heat Mode – Outdoor Operating Temperature Range 5F ~ 75.2F SEER 20.5 EER 11 Voltage Requires a minimum of 208V-230V/60HZ/40-60A (please check your home meets this electrical requirement prior to purchase) 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
SleepAir Handler 12K BTU 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
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Coverage Area
When considering the purchase of our cooling or heating system, it’s essential to determine the appropriate BTU output based on the square footage of your space. Please refer to the following coverage chart for guidance:
- 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 additional factors, such as insulation quality, ceiling height, and the presence of appliances, can influence performance. For personalized assistance in selecting the optimal solution for your needs, don’t hesitate to reach out to our experienced 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.



















