MRCOOL DIY Mini Split - 45,000 BTU 4 Zone Ductless Air Conditioner and — Home Selection
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MRCOOL DIY Mini Split - 45,000 BTU 4 Zone Ductless Air Conditioner and Heat Pump

 MRCOOL DIY Mini Split - 45,000 BTU 4 Zone Ductless Air Conditioner and Heat Pump, DIY-B-448HP09121212

Imagine year-round comfort tailored to every corner of your home—all achieved with your own hands. The MRCOOL DIY 4th Generation Mini Split - 45,000 BTU, 4 Zone Ductless Air Conditioner and Heat Pump empowers you to create ideal temperatures for multiple rooms, without professional installation. This system delivers powerful heating and cooling, allowing you to control comfort in four separate areas, ensuring every family member or space gets just the right climate.

The system includes a 48,000 BTU Multi-Zone Condenser paired with four efficient wall-mounted air handlers: one at 9,000 BTU and three at 12,000 BTU each. These handlers can be placed in the rooms where you need them most, whether it’s a cozy bedroom, bustling kitchen, or spacious living room. The setup also comes with four individual remotes, making personalized temperature control easy and convenient for every zone.

Designed for the DIY enthusiast, the MRCOOL Mini Split's straightforward installation means you can handle setup yourself, saving on contractor costs. With whisper-quiet operation, energy-efficient performance, and modern technology, this mini split system is ideal for achieving ultimate home comfort with minimal effort. Perfect for those who want professional-grade HVAC without the hassle.
Package Includes

This package does not include linesets, don't forgot to scroll up and add them!

Condenser

  • Energy Efficient. This 5 Zone condenser, when paired with select MRCOOL air handlers, is capable of producing an impressive 20.5 SEER efficiency rating.
  • Works In All Environments. The capability to continue to deliver heating performance when temperatures reach 5°F
  • Lifetime Warranty. For added peace of mind, this is the only condenser on the market that comes with a limited lifetime compressor warranty. Simply register into the MRCOOL Care Program to get the lifetime warranty!

Air Handler, 9K BTU, Quantity 1

  • Large Coverage Area. Handler covers an area up to 375 sq. ft.
  • Versatile. Incredibly versatile and equipped with multiple operating modes, which include COOL, HEAT, AUTO, DRY (dehumidify), and SLEEP.
  • Easy to Control. This unit also has the capability to be controlled by your Apple or Android smartphone through the use of the Smart HVAC app.
  • Convenient Installation. With its light and compact design, it can be installed easily to most interior walls with the included mounting plate.

    Air Handler, 12K BTU, Quantity 3

    • Large Coverage Area. Handler covers an area up to 500 sq. ft.
    • Versatile. Incredibly versatile and equipped with multiple operating modes, which include COOL, HEAT, AUTO, DRY (dehumidify), and SLEEP.
    • Easy to Control. This unit also has the capability to be controlled by your Apple or Android smartphone through the use of the Smart HVAC app.
    • Convenient Installation. With its light and compact design, it can be installed easily to most interior walls with the included mounting plate.

          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 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 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
          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 from Cool, Heat or Fan-Only
          Dry - dehumidify
          Cool
          Heat
          Fan Only
          Quiet
          Sleep
          Installation Manual
          Product Brochure
          Performance Specifications
          Warranty
          Energy Guide
          AHRI Certificate

          Free Express Shipping on All orders within the USA

          Read Our Shipping Policy Here

          30 Day Free Returns on all orders

          Read about our Returns Policy Here

          Request A Quote

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          ★★★★★ Rated 4.8/5 by HVAC Professionals Trusted by Over 1,000 HVAC Technicians Nationwide
          MRCOOL DIY Mini Split - 54,000 BTU 4 Zone Ductless Air Conditioner and Heat Pump, DIY-B-448HP12121218 COMPLETE SET

          MRCOOL DIY Mini Split - 45,000 BTU 4 Zone Ductless Air Conditioner and Heat Pump, DIY-B-448HP09121212

          by MRCOOL
          SKU DIY-B-448HP09121212
          In stock | ETA: to
          Save $889.00
          $5,867.00
          $4,978.00

          Notify me when back in stock

          FREE EXPRESS SHIPPING Process orders in 1 business day
          STRESS FREE RETURNS 2 Year Returns
          Primum Quality Top Tier Products, Even Better Customer Care
          5 Year Warranty We Believe In Our Products & Our Team
          Professional Services Get service quotes the same day
          MRCOOL DIY Mini Split - 45,000 BTU 4 Zone Ductless Air Conditioner and Heat Pump, DIY-B-448HP09121212
          $5,867.00
          $4,978.00
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          ACCESSORIES FOR MRCOOL

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

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

          $105.00

          MRCOOL 50FT 1/4 x 1/2 Flared Line Set Kit for 12K and 18K Olympus and Advantage Mini Split, MC50-1412

          MRCOOL 50FT 1/4 x 1/2 Flared Line Set Kit for 12K and 18K Olympus and Advantage Mini Split, MC50-1412

          $315.00

          MRCOOL 25 ft. Pre-Charged 3/8

          MRCOOL 25 ft. Pre-Charged 3/8" x 3/4" No-Vac Quick Connect Line Set for Central Ducted and Universal Series, NV25-3834

          $370.00

          MRCOOL LineGuard Set Cover for MRCOOL Ductless Mini Split Systems - 12 Feet, MLG450

          MRCOOL LineGuard Set Cover for MRCOOL Ductless Mini Split Systems - 12 Feet, MLG450

          $133.00

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

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

          $164.00

          MRCOOL 20kW Heat Kit for the Central Ducted Air Handler (Compatible with MRCOOL Hyper Heat & VersaPro Series), CENTRALHK20

          MRCOOL 20kW Heat Kit for the Central Ducted Air Handler (Compatible with MRCOOL Hyper Heat & VersaPro Series), CENTRALHK20

          $442.00

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

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

          $197.00

          MRCOOL 15kW Heat Kit for the Central Ducted Air Handler (Compatible with MRCOOL Hyper Heat & VersaPro Series), CENTRALHK15

          MRCOOL 15kW Heat Kit for the Central Ducted Air Handler (Compatible with MRCOOL Hyper Heat & VersaPro Series), CENTRALHK15

          $213.00

          MRCOOL 35 FT Pre-Charged 3/8

          MRCOOL 35 FT Pre-Charged 3/8" x 3/4" No-Vac Quick Connect Line Set for Central Ducted and Universal Series, NV35-3834

          $485.00

          MRCOOL 25 ft. Pre-Charged 3/8

          MRCOOL 25 ft. Pre-Charged 3/8" x 3/4" No-Vac Quick Connect Line Set for Central Ducted and Universal Series, NV25-3834

          $370.00

          MRCOOL® DIY Tool Kit - Wrench, Hole Saw, Tool Bag

          MRCOOL® DIY Tool Kit - Wrench, Hole Saw, Tool Bag

          $69.99

          MRCOOL® Mini Split Cleaning Care Kit

          MRCOOL® Mini Split Cleaning Care Kit

          $79.99

          MRCOOL Downflow Application 14 In. Square to Round Adaptor Kit for 2-3 Signature Packaged Units, M14DSR4260A

          MRCOOL Downflow Application 14 In. Square to Round Adaptor Kit for 2-3 Signature Packaged Units, M14DSR4260A

          $106.00

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

          $137.00

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

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

          $151.00

          MRCOOL 50FT 1/4 x 3/8 Flared Line Set Kit for 9K Olympus and Advantage Mini Split, MC50-1438

          MRCOOL 50FT 1/4 x 3/8 Flared Line Set Kit for 9K Olympus and Advantage Mini Split, MC50-1438

          $308.00

          MRCOOL 50FT 3/8 x 5/8 Flared Line Set Kit for 24K Olympus and Advantage Mini Split, MC50-3858

          MRCOOL 50FT 3/8 x 5/8 Flared Line Set Kit for 24K Olympus and Advantage Mini Split, MC50-3858

          $329.00

          MRCOOL DIY 50ft 3/8 x 5/8 Lineset for DIY 24K & 36K Indoor, 4th Generation, DIY50-3858C

          MRCOOL DIY 50ft 3/8 x 5/8 Lineset for DIY 24K & 36K Indoor, 4th Generation, DIY50-3858C

          $565.00

          MRCOOL DIYCOUPLER-58 + DIYCOUPLER-38 + 75ft MC-5 Cable, 4th Gen, DIYCOUPLER-3858K75C

          MRCOOL DIYCOUPLER-58 + DIYCOUPLER-38 + 75ft MC-5 Cable, 4th Gen, DIYCOUPLER-3858K75C

          $393.00

          MRCOOL 5 KW Signature Air Handler Heat Strip with Circuit Breaker, MHK05H

          MRCOOL 5 KW Signature Air Handler Heat Strip with Circuit Breaker, MHK05H

          $149.00

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

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

          $181.00

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

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

          $194.00

          MRCOOL 15 KW Signature Air Handler Heat Strip with Circuit Breaker, MHK15H

          MRCOOL 15 KW Signature Air Handler Heat Strip with Circuit Breaker, MHK15H

          $295.00

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

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

          $163.00

          MRCOOL 20 KW Signature Air Handler Heat Strip with Circuit Breaker, MHK20H

          MRCOOL 20 KW Signature Air Handler Heat Strip with Circuit Breaker, MHK20H

          $331.00

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

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

          $179.00

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

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

          $194.00

          MRCOOL 15 KW Heat Strip with Circuit Breaker for Packaged Units, MHK15P

          MRCOOL 15 KW Heat Strip with Circuit Breaker for Packaged Units, MHK15P

          $264.00

          MRCOOL 20 KW Heat Strip with Circuit Breaker for Packaged Units, MHK20P

          MRCOOL 20 KW Heat Strip with Circuit Breaker for Packaged Units, MHK20P

          $367.00

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

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

          $159.00

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

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

          $190.00

          MRCOOL 10 KW Signature Series Modular Blower Heat Strip with Circuit Breaker, MHK10B

          MRCOOL 10 KW Signature Series Modular Blower Heat Strip with Circuit Breaker, MHK10B

          $200.00

          MRCOOL 15 KW Signature Series Modular Blower Heat Strip with Circuit Breaker, MHK15B

          MRCOOL 15 KW Signature Series Modular Blower Heat Strip with Circuit Breaker, MHK15B

          $306.00

          MRCOOL 20 KW Signature Series Modular Blower Heat Strip with Circuit Breaker, MHK20B

          MRCOOL 20 KW Signature Series Modular Blower Heat Strip with Circuit Breaker, MHK20B

          $351.00

          MRCOOL 5kw ProDirect Heat Kit, PHK05H

          MRCOOL 5kw ProDirect Heat Kit, PHK05H

          $178.00

          MRCOOL 7.5kw ProDirect Heat Kit, PHK07H

          MRCOOL 7.5kw ProDirect Heat Kit, PHK07H

          $234.00

          MRCOOL 10kw ProDirect Heat Kit, PHK10H

          MRCOOL 10kw ProDirect Heat Kit, PHK10H

          $130.00

          MRCOOL 15kw ProDirect Heat Kit, PHK15H

          MRCOOL 15kw ProDirect Heat Kit, PHK15H

          $210.00

          MRCOOL 20kw ProDirect Heat Kit, PHK20H

          MRCOOL 20kw ProDirect Heat Kit, PHK20H

          $214.00

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

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

          $137.00

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

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

          $162.00

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

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

          $169.00

          MRCOOL 15 KW Universal Air Handler Heat Strip with Circuit Breaker, MHK15U

          MRCOOL 15 KW Universal Air Handler Heat Strip with Circuit Breaker, MHK15U

          $260.00

          MRCOOL 20 KW Universal Air Handler Heat Strip with Circuit Breaker, MHK20U

          MRCOOL 20 KW Universal Air Handler Heat Strip with Circuit Breaker, MHK20U

          $306.00

          MRCOOL 16FT 1/4

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

          $121.00

          MRCOOL 16FT 1/4

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

          $133.00

          MRCOOL 16FT 3/8

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

          $144.00

          MRCOOL Pre-Charged 3/8

          MRCOOL Pre-Charged 3/8" x 3/4" No-Vac Quick Connect Line Set for Central Ducted and Universal Series, NV15-3834

          $288.00

          MRCOOL 50 ft. Pre-Charged 3/8

          MRCOOL 50 ft. Pre-Charged 3/8" x 3/4" No-Vac Quick Connect Line Set for Central Ducted and Universal Series, NV50-3834

          $598.00

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

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

          $26.25

          MRCOOL DIY Mini Split - 45,000 BTU 4 Zone Ductless Air Conditioner and Heat Pump, DIY-B-448HP09121212 Reviews

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