MRCOOL DIY Mini Split – 42,000 BTU 4 Zone Ductless Air Conditioner and Heat Pump, DIY-B-448HP09091212
$5,330.00 Original price was: $5,330.00.$4,846.00Current price is: $4,846.00.
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This 4th Generation MRCOOL Mini Split system includes a DIY 48,000 BTU Multi-Zone Condenser, two 9,000 BTU Wall Mounted Air Handlers, two 12,000 BTU Wall Mounted Air Handlers, and four remotes. The highlight of this system is that it can be installed by you, without professional assistance.
Package Includes:
- MRCOOL DIY Multi Zone 5-Zone 48K BTU Condenser, 4th Gen Series, DIY-MULTI5-48HP230C
- MRCOOL DIY 4th Generation 9K BTU Wall Mount Air Handler 230 Volt with Enhanced WiFi, DIY-09-HP-WMAH-230C25 (x2)
- MRCOOL DIY 4th Generation 12K BTU Wall Mount Air Handler 230 Volt with Enhanced WiFi, DIY-12-HP-WMAH-230C25 (x2)
Please note: Linesets are not included in this package. Be sure to scroll up and add them to your order.
Condenser:
- Energy Efficient:Â This 5-zone condenser, when paired with select MRCOOL air handlers, achieves an impressive 20.5 SEER efficiency rating.
- Works In All Environments: Capable of maintaining heating performance even when temperatures drop to 5°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 activate 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.
- Easy to Control:Â Can be controlled via your Apple or Android smartphone using the Smart HVAC app.
- Convenient Installation:Â Designed to be lightweight and compact, allowing for easy installation on most interior walls with the included mounting plate.
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.
- Easy to Control:Â Can be controlled via your Apple or Android smartphone using the Smart HVAC app.
- Convenient Installation:Â Designed to be lightweight and compact, allowing for easy installation on most interior walls with the included mounting plate.
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Product Overview
 Covers 1750 sq. ft.      Â
 DIY Installation
 Wall 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 Outdoor Operating Range Cool: 5F ~ 122F
Heat: 5F ~ 75.2FSEER / EER SEER: 20.5 / EER: 11 Voltage 208V-230V / 60HZ / 40-60A Registered Warranty 7 Years Replacement, 5 Years Parts Air Handler 9K BTU Product Dimensions 31.57″W x 7.44″D x 11.69″H Mount Type Wall Cooling Capacity 9,000 BTU Heating Capacity 9,000 BTU Registered Warranty 5 Years Parts Modes - Auto
- Dry
- Cool
- Heat
- Fan Only
- Quiet
- Sleep
Air Handler 12K BTU Product Dimensions 31.57″W x 7.44″D x 11.69″H Mount Type Wall Cooling Capacity 12,000 BTU Heating Capacity 12,000 BTU Registered Warranty 5 Years Parts Modes - Auto
- Dry
- Cool
- Heat
- Fan Only
- Quiet
- Sleep
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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.





















