MRCOOL DIY Mini Split – 51,000 BTU 5 Zone Ductless Air Conditioner and Heat Pump with 50 ft. Install Kit, DIY548HP090909121250
$9,125.00 Original price was: $9,125.00.$7,853.00Current price is: $7,853.00.
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This 4th Generation MRCOOL Mini Split system offers a comprehensive solution for cooling and heating up to five separate rooms. The package includes everything required for a DIY installation: a 48,000 BTU Multi-Zone Condenser, three 9,000 BTU Wall Mounted Air Handlers, two 12,000 BTU Wall Mounted Air Handlers, five remotes, and five 50 ft. installation kits. Notably, this system is designed for easy installation, so you can handle the process yourself without professional assistance.
Package Includes:
- MRCOOL DIY Multi-Zone 5-Zone 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 (x3)
- MRCOOL DIY 4th Generation 12K BTU Wall Mount Air Handler 230 Volt with Enhanced WiFi, DIY-12-HP-WMAH-230C25 (x2)
- MRCOOL DIY 50ft 1/4 x 1/2 Lineset for DIY 9K, 12K & 18K Indoor, 4th Generation, DIY50-1412C (x5)
When all air handlers are operating simultaneously, their combined BTU output will not exceed the condenser’s 48,000 BTU capacity, ensuring optimal performance across all units.
Condenser
- Energy Efficient:Â When paired with compatible MRCOOL air handlers, this 5-Zone condenser delivers up to a 20.5 SEER efficiency rating, making it highly energy-efficient.
- Performance in All Climates: Designed to heat effectively even in temperatures as low as 5°F, this condenser is reliable in diverse weather conditions.
- Lifetime Warranty:Â For long-term peace of mind, it is the only condenser available with a limited lifetime compressor warranty. Simply register with the MRCOOL Care Program to qualify for this warranty.
9K BTU Air Handler (Quantity: 3)
- Coverage Area:Â This air handler is capable of cooling or heating spaces up to 375 sq. ft.
- Versatile Operation:Â Equipped with multiple modes, including COOL, HEAT, AUTO, DRY (dehumidify), and SLEEP, this unit adapts to various climate needs.
- Smart Control:Â Control the unit from your Apple or Android device via the Smart HVAC app, offering convenient and precise temperature management.
- Simple Installation:Â Its compact design and included mounting plate make installation straightforward on most interior walls.
12K BTU Air Handler (Quantity: 2)
- Coverage Area:Â Designed to handle larger spaces, this air handler covers up to 500 sq. ft.
- Versatile Operation:Â Like the 9K unit, it includes modes such as COOL, HEAT, AUTO, DRY, and SLEEP for enhanced comfort.
- Smart Control:Â Enjoy the convenience of controlling the unit via smartphone through the Smart HVAC app.
- Easy Installation:Â With its lightweight and space-saving design, installation is simple and efficient using the provided mounting plate.
Line Set, 50 ft. (Quantity: 5)
- Connection:Â Each 50 ft. copper line set connects the condenser to the air handlers. For a multi-zone system, one line set per indoor unit is required for proper functionality.
- Pre-Charged:Â Each line set is pre-charged with the correct amount of R-410A refrigerant, ensuring optimal performance.
- DIY Installation:Â The system is designed for self-installation, saving you money by eliminating the need for a certified technician.
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Product Overview
 Covers 2125 sq. ft.      Â
 DIY Installation
 Wall Mounted        Â
  Number of Zones: 5
 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 Cool Mode – Outdoor Operating Temperature Range 5F ~ 122F Min Ambient Heat 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 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 50 Feet Liquid Line Size 1/4″ Suction Line Size 1/2″ -
Coverage Area
When considering the ideal cooling or heating solution for your space, it’s crucial to determine the appropriate number of BTUs required. Utilize our coverage chart to match your square footage with the corresponding BTU output:
- 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
Bear in mind that several additional factors may influence performance, including insulation quality, ceiling height, and the presence of appliances within the room. For personalized assistance, don’t hesitate to reach out to our knowledgeable 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.























