MRCOOL DIY Mini Split – 45,000 BTU 4 Zone Ductless Air Conditioner and Heat Pump with 35 ft. Install Kit, DIYM448HPW05C140
$7,669.00 Original price was: $7,669.00.$6,730.00Current price is: $6,730.00.
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This 4th Generation MRCOOL Mini Split system includes everything necessary to cool and heat four separate rooms. The package contains: a DIY 48,000 BTU Multi-Zone Condenser, one 9,000 BTU Wall Mounted Air Handler, three 12,000 BTU Wall Mounted Air Handlers, four Remotes, and four 25 ft. Installation Kits. The most impressive feature is the ability for self-installation!
Package Includes
- MRCOOL DIY Multi-Zone 5-Zone Condenser, 4th Gen Series (SKU: DIY-MULTI5-48HP230C)
- MRCOOL DIY 4th Generation 9K BTU Wall Mount Air Handler 230 Volt with Enhanced WiFi (SKU: DIY-09-HP-WMAH-230C25)
- MRCOOL DIY 4th Generation 12K BTU Wall Mount Air Handler 230 Volt with Enhanced WiFi (SKU: DIY-12-HP-WMAH-230C25) (x3)
- MRCOOL DIY 35ft 1/4 x 1/2 Lineset for DIY 9K, 12K & 18K Indoor, 4th Generation (SKU: DIY35-1412C) (x4)
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 heating even when temperatures drop to 5°F.
- Lifetime Warranty:Â The only condenser on the market with a limited lifetime compressor warranty. Register with the MRCOOL Care Program to activate the lifetime warranty.
Air Handler, 9K BTU, Quantity 1
- Large Coverage Area:Â 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 Apple or Android smartphones using the Smart HVAC app.
- Convenient Installation:Â Light and compact design allows for easy installation on most interior walls with the included mounting plate.
Air Handler, 12K BTU, Quantity 3
- Large Coverage Area:Â 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 Apple or Android smartphones using the Smart HVAC app.
- Convenient Installation:Â Light and compact design allows for easy installation on most interior walls with the included mounting plate.
Line Set 35 ft., Quantity 4
- Functionality:Â Connects the MRCOOL DIY Condenser to the MRCOOL DIY Air Handlers. One line set per indoor unit is required for Multi-Zone systems.
- Pre-Charged:Â These line sets come pre-charged with the precise amount of R-410A refrigerant.
- DIY & Save Money:Â Enables self-installation without the need for a certified technician, saving money.
Additional Line Sets & Coupler
If the default line set lengths are insufficient for your application, additional line sets are available for purchase. A coupler kit is also needed to connect two standard line sets together.
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Product Overview
 Covers 1875 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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What's Included
Air Handler

Condenser

Line Set

Wall Sleeve

Communication Wire

Remote Control

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Specifications and Dimensions
Condenser Specifications 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 Min Ambient Cool 5F ~ 122F Min Ambient Heat 5F ~ 75.2F SEER 20.5 EER 11 Voltage 208V-230V / 60HZ / 40-60A Registered Warranty 7 Years Replacement on Condenser, 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 – auto selects from Cool, Heat or Fan-Only
Dry – dehumidify
Cool
Heat
Fan Only
Quiet
SleepAir 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 – auto selects from Cool, Heat or Fan-Only
Dry – dehumidify
Cool
Heat
Fan Only
Quiet
SleepLine Set Length 35 Feet Liquid Line Size 1/4″ Suction Line Size 1/2″ -
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.

























