MRCOOL DIY Mini Split - 51,000 BTU 4 Zone Ductless Air Conditioner and Heat Pump, DIY-B-448HP09121218

Name: MRCOOL DIY Mini Split - 51,000 BTU 4 Zone Ductless Air Conditioner and Heat Pump, DIY-B-448HP09121218
Brand: MRCOOL
SKU: DIY-B-448HP09121218
Price: 5128.0 USD
Availability: InStock

SKU DIY-B-448HP09121218

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MRCOOL Accessories

MRCOOL 10 KW Heat Strip with Circuit Breaker for Packaged Units, MHK10P

MRCOOL 10 KW Signature Air Handler Heat Strip with Circuit Breaker, MHK10H

MRCOOL 10 KW Universal Air Handler Heat Strip with Circuit Breaker, MHK10U

MRCOOL 10kW Heat Kit for Central Ducted VersaPro® & Hyper Heat 2nd Gen Air Handler, MVPHK10

MRCOOL 10kW Heat Kit for the Central Ducted Air Handler (Compatible with MRCOOL Hyper Heat & VersaPro Series), CENTRALHK10

MRCOOL 16FT 1/4" x 1/2" Flared Line Set Kit for 12K and 18K Olympus and Advantage Mini Split, MC16-1412

MRCOOL 16FT 1/4" x 3/8" Flared Line Set Kit for 9K Olympus and Advantage Mini Split, MC16-1438

MRCOOL 16FT 3/8" x 5/8" Flared Line Set Kit for 24K Olympus and Advantage Mini Split, MC16-3858

MRCOOL 25FT 1/4 x 1/2 Flared Line Set Kit for 12K and 18K Olympus and Advantage Mini Split, MC25-1412

MRCOOL 25FT 1/4 x 3/8 Flared Line Set Kit for 9K Olympus and Advantage Mini Split, MC25-1438

MRCOOL 25FT 3/8 x 5/8 Flared Line Set Kit for 24K Olympus and Advantage Mini Split, MC25-3858

MRCOOL 3/4 Flare-to-Weld Fitting, WF-34

MRCOOL 3/8 Flare-to-Weld Fitting, WF-38

MRCOOL 3/8 No-Vac Coupler + 3/4 No-Vac Coupler for Central Ducted and Universal Series, NVCOUPLER-3834

MRCOOL 5 KW Heat Strip with Circuit Breaker for Packaged Units, MHK05P

MRCOOL 5 KW Signature Series Modular Blower Heat Strip with Circuit Breaker, MHK05B

MRCOOL 5 KW Universal Air Handler Heat Strip with Circuit Breaker, MHK05U

MRCOOL 5kW Heat Kit for Central Ducted VersaPro® & Hyper Heat 2nd Gen Air Handler, MVPHK05

MRCOOL 5kW Heat Kit for the Central Ducted Air Handler (Compatible with MRCOOL Hyper Heat & VersaPro Series), CENTRALHK05

MRCOOL 5kw ProDirect Heat Kit, PHK05H

MRCOOL 7.5 KW Heat Strip with Circuit Breaker for Packaged Units, MHK07P

MRCOOL 7.5 KW Signature Air Handler Heat Strip with Circuit Breaker, MHK07H

MRCOOL 7.5 KW Signature Series Modular Blower Heat Strip with Circuit Breaker, MHK07B

MRCOOL 8 KW Universal Air Handler Heat Strip with Circuit Breaker, MHK08U

MRCOOL 8kW Heat Kit for Central Ducted VersaPro® & Hyper Heat 2nd Gen Air Handler, MVPHK08

MRCOOL 8kW Heat Kit for the Central Ducted Air Handler (Compatible with MRCOOL Hyper Heat & VersaPro Series), CENTRALHK08

MRCOOL Bluetooth Mini-Stat Thermostat for Ductless Mini Split in White, MTSK02

MRCOOL Condenser Wall Mounting Kit for 24k to 36k BTU Ductless Split System, MB440A

MRCOOL Condenser Wall Mounting Kit for 9k to 18k BTU Ductless Split System, MB176

MRCOOL DIYCOUPLER-14 + DIYCOUPLER-12 w/50 ft of Communication Wire, DIYCOUPLER-1412K50

MRCOOL DIYCOUPLER-38 + DIYCOUPLER-58 (Two Sets) w/75 ft of Communication Wire, DIYCOUPLER-3858K75

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MRCOOL Downflow Kit, MSHDK1830

MRCOOL Downflow Kit, MSHDK3660

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Description

MRCOOL DIY 4th Generation Multi-Zone Mini Split System – 48K BTU Condenser with 4 Air Handlers (1x9K, 2x12K, 1x18K)

The MRCOOL DIY 4th Generation Multi-Zone Mini Split System offers a complete, flexible, and energy-efficient solution to heat and cool your home, office, or other spaces — all without the need to hire an HVAC technician. This 5-zone system includes one 48,000 BTU condenser and four wall-mounted air handlers of varying capacities, designed for easy self-installation with no special tools or vacuum equipment required.

What’s Included:

48K BTU Multi-Zone Condenser
Model: DIY-MULTI5-48HP230C
- Energy efficient with up to 20.5 SEER2 rating
- Operates in extreme temperatures, heating down to -5°F
- 7-year compressor warranty and 5-year parts warranty (Lifetime compressor warranty available with MRCOOL Care Program registration)
Air Handlers:
- 1 × 9K BTU Wall Mount (Model: DIY-09-HP-WMAH-230C25)
  Coverage: ~180 to 375 sq. ft.
- 2 × 12K BTU Wall Mount (Model: DIY-12-HP-WMAH-230C25)
  Coverage: ~250 to 500 sq. ft. each
- 1 × 18K BTU Wall Mount (Model: DIY-18-HP-WMAH-230C25)
  Coverage: ~375 to 750 sq. ft.

Each air handler supports multiple operating modes: COOL, HEAT, AUTO, DRY (dehumidify), and SLEEP for maximum comfort and energy savings.

Key Features:

DIY Installation:
Designed for easy self-installation without the need for expensive HVAC technicians or specialized equipment. The system uses pre-charged line sets (not included, must be purchased separately) that connect quickly and securely.
Flexible Multi-Zone Setup:
The combined BTU output of all air handlers will never exceed the 48K BTU rating of the condenser, ensuring balanced performance and efficiency.
Smart Control:
Each air handler can be controlled individually via the MRCOOL Smart HVAC app on Apple or Android devices, offering remote access and scheduling for convenience.
Energy Efficient:
The condenser’s high SEER2 rating of 20.5 qualifies for many energy or tax rebates, helping you save on operating costs.
Robust Performance in Extreme Weather:
The condenser maintains heating functionality even when outdoor temperatures drop to -5°F, suitable for colder climates.
Compact and Versatile Air Handlers:
Lightweight and easy to mount on most interior walls with included mounting plates.

Important Notes:

Linesets and Communication Wires:
The system does not include the refrigerant linesets and communication wires for each air handler. These must be purchased separately to complete your installation.
Warranty:
Standard 7-year compressor and 5-year parts warranty included. Register with MRCOOL Care Program for lifetime compressor warranty.

Ideal For:

Homeowners or small business owners looking to install a multi-zone HVAC system themselves.
Spaces requiring zoned temperature control with independent air handlers.
Those seeking energy-efficient heating and cooling with smart remote control capabilities.
Locations with moderate to cold climates thanks to the system’s low temperature heating capability.

Summary:

The MRCOOL DIY 4th Generation 48K BTU Multi-Zone Mini Split System is a versatile, energy-efficient, and user-friendly HVAC solution for heating and cooling multiple rooms or zones. With four wall-mounted air handlers ranging from 9K to 18K BTU, this system provides flexible coverage for a variety of spaces. Its DIY design saves installation costs and hassle, while smart app control adds convenience and customization.

Experience the freedom and savings of a professional-grade mini split system you can install yourself!

PRODUCT SPECIFICATIONS:
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	5°F ~ 122°F
Heat Mode - Outdoor Operating Temperature Range	5°F ~ 75.2°F
SEER2	20.50
EER2	11
HSPF2	9.2
Voltage	Requires a minimum of 208V-230V/60HZ/18-25A (please check your home meets this electrical requirement prior to purchase)
Registered Warranty	7 Years Replacement on Compressor, 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 Cool, Heat or Fan-Only) Cool Heat Dry Fan Only 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 (Auto selects Cool, Heat or Fan-Only) Cool Heat Dry Fan Only Sleep

Air Handler 18K BTU

Product Dimensions	34.61"W x 8.90"D x 13.19"H
Mount Type	Wall
Cooling Capacity	18,000 BTU
Heating Capacity	18,000 BTU
Registered Warranty	5 Years Parts
Modes	Auto (Auto selects Cool, Heat or Fan-Only) Cool Heat Dry Fan Only Sleep

Installation Manual
Product Brochure
Performance Specifications
Warranty
Energy Guide
AHRI Certificate

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Frequently Asked Questions About MRCOOL DIY Mini Split - 51,000 BTU 4 Zone Ductless Air Conditioner and Heat Pump, DIY-B-448HP09121218

Most Frequently Asked Questions

Product Overview

Zone / ROOM: 4 Zone
Air Handler BTU: 9k + 12k + 12k + 18k
Coverage Area: 2125 sq.ft
Condenser BTU: 48k
Outdoor Operating Temp (Cool/ heat): -22°F to 75°F for heating | -22°F to 122°F for cooling
Warranty 7 Year Compressor & 5 Year Parts