MRCOOL DIY 5th Gen Mini Split - 6-Zone 48,000 BTU Mini Split Condenser 230V with 12K + 9K + 9K + 9K + 9K + 9K Ceiling Cassette Air Handlers

MRCOOL DIY 5th Gen Mini Split - 6-Zone 48,000 BTU Mini Split Condenser 230V with 12K + 9K + 9K + 9K + 9K + 9K Ceiling Cassette Air Handlers

SKU: DIY5-6ZC-48HP-12K9K9K9K9K9K

Sale price$12,410.60 Regular price$14,943.00
Save 17%


Air Handler Type Ceiling

Choose Line Set Lengths:

Air Handler 1 - 12K - Line Set:

Air Handler 2 - 9K - Line Set:

Air Handler 3 - 9K - Line Set:

Air Handler 4 - 9K - Line Set:

Air Handler 5 - 9K - Line Set:

Air Handler 6 - 9K - Line Set:


Estimated restock:
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  • 30-Day Return Policy⁺

Package Overview

Take control of your home’s comfort with the MRCOOL® 5th Gen DIY® Multi-Zone Mini Split System — the ultimate solution for efficient, customizable, and true DIY-friendly heating and cooling.

This powerful 48K 6-Zone system includes one 12K and five 9K ceiling cassette air handlers.

Features

  • Customize mini-split system: choose the perfect line set length for each zone just above the “Add to Cart” button.
  • Ultra-Efficient Cooling & Heating: Enjoy up to 21.8 SEER2 and 10 HSPF2-4 for energy-efficient year-round comfort.
  • Low-Profile Ceiling Cassette Design: Flush-mounted unit fits between standard ceiling joists for a clean, built-in look.
  • DIY-Friendly QuickConnect® Installation: No vacuuming or professional tools needed — pre-charged line sets make setup fast and simple.
  • Smart Voice & App Control: Full control via SmartHVAC app, Alexa, Google Assistant, or included wireless remote.
  • Eco-Conscious Refrigerant: Uses R-454B refrigerant with a low environmental impact.
  • Industry-Leading Warranty: Includes 5-year parts, 7-year compressor, and lifetime replacement with MRCOOL® Care registration.

Package Includes:

MRCOOL DIY® 5th Gen 48,000 BTU 6-Zone Mini Split Condenser 230v (DIY-MULTI6-48HP230D-O)
MRCOOL DIY® 5th Gen 48,000 BTU 6-Zone Mini Split Condenser 230v (DIY-MULTI6-48HP230D-O) View Product
Description
Product Specs
Manuals & Guides

We’re excited to introduce our new 5th Generation MRCOOL® DIY® 48k BTU Multi-Zone Ductless Mini-Split Condenser, because it’s better than its predecessor in nearly every way. You won’t need the services of an HVAC professional when you’re setting this unit up, because you can do it yourself, which saves lots of time and money! This condenser enables you to heat and cool up to 6 separate spaces equalling up to 2,000 sq. ft., meaning you’d be able to cover an entire home in the completely efficient comfort of a single DIY® system.

You can install this system on your own because our innovative, patented pre-charged Quick Connect® line sets allow you to skip the lengthy and complicated process of evacuating and charging the system. These line sets are filled with R-454B refrigerant, a much more ecological and proficient upgrade from the previous refrigerant used in the last generation. This switch helps the system achieve impressive efficiency levels, like 21.8 SEER2 and an HSPF2-4 of 10. Once you install your system, you’ll be able to explore the variety of ways you can customize your comfort. For ultimate control, you can integrate system operations with the SmartHVAC app, available for Apple and Android phones, allowing you the ability to set schedules, manage modes of operation, monitor your systems all with the touch of a button.

The app even enables you to set up integration with Amazon Alexa and Google Home, meaning you won’t have to move a finger to make your home more comfortable than ever. We pride ourselves on having one of the best warranties in the industry on this unit! Once you install your condenser, you’re entitled to a 5 year parts warranty, a 7 year compressor warranty, and, if you subscribe to the MRCOOL® Care Program, a Limited Lifetime Replacement warranty. The MRCOOL® DIY® is the right choice if you want fast, efficient comfort that won’t let you down!

Features

  • Intertek listed 5031495
  • Easy DIY installation
  • Future-proof your investment with the included DIYPro® cable, eliminating the need for electrical conduit.
  • Keep the included remote close by, and MRCOOL DIY®'s Follow Me® function will track the air temperature around you to ensure maximum comfort.
  • The MRCOOL® Smart HVAC Controller® Module and App fully support Google Assistant & Amazon Alexa out of the box.
Dimensions 16.34" D x 52.48" H x 37.48" W

SEER2

21.8

EER2

12

HSPF2-4

10

HSPF2-5

7.8

Tonnage

4

Cooling Capacity (BTU)

43000

Heating Capacity (BTU)

48000

Voltage (V)

208/230

Phase

1

Cycle

60

Max Fuse Breaker (A)

45

Min Circuit Ampacity (A)

40

Color

White

Zone Capacity

6

Refrigerant Type

R-454B

Refrigerant Volume (OZ)

148.15

Decibel Rating (DBA)

64

Inverter

DC

Line Set Length

25

Max Lineset Length (FT)

221.4

Liquid LIne Size

1/4

Suctio Line Size

(3/8 X4) (1/2 X2)

Compressor Motor Type

Rotary

Auxiliary Heater Included

No

Auxiliary Heater Available

No

Fan Only Option

Yes

Quiet Mode

Yes

Auto Cool

Yes

WIFI Compatibility

Yes

APP Compatibility

Yes

Works with IOS

Yes

Works with Android

Yes

UL Listed

Yes

ETL Listed

Yes

Energy Star Certified

Yes

AHRI Certified

Yes

Registered Warranty

Extended Limited Lifetime*

Base Parts Warranty

5

Base Compressor Warranty

7

Has Batteries

Yes

Contains Electronics

Yes

Contans Chemicals

Yes

Contains Aerosol

Yes

Contains Compressed Gas

Yes

Proposition 65 Warning

Yes

MRCOOL DIY® Series 5th Gen OuttaSight® 12K BTU 230V One-Way Ceiling Cassette Air Handler (DIYCASSETTE12HP-230D25-O)
MRCOOL DIY® Series 5th Gen OuttaSight® 12K BTU 230V One-Way Ceiling Cassette Air Handler (DIYCASSETTE12HP-230D25-O) View Product
Description
Product Specs
Manuals & Guides

The 5th Generation MRCOOL® DIY® Series OuttaSight® 12K BTU 230V One-Way Ceiling Cassette is a sleek, efficient, and space-saving climate solution for areas up to 550 sq. ft. Engineered for easy installation, it seamlessly integrates into multi-zone systems, making it ideal for both new constructions and retrofit projects without requiring ductwork or wall space.

Designed for discreet placement, this cassette mounts flush between 16” ceiling joists, including pre-manufactured I-joists, providing a clean, modern appearance while maximizing room layout flexibility. It connects effortlessly to the MRCOOL® DIY® Quick Connect® line set, which comes pre-charged with R-454B, a more environmentally friendly refrigerant, eliminating the need for vacuuming and reducing installation time. With advanced filtration technology, this unit enhances indoor air quality, while the Elevation function lowers the filter panel for easy maintenance and cleaning. It operates quietly, ensuring a comfortable and peaceful environment in any room. 

The cassette is fully controllable through a wireless remote, SmartHVAC app, and voice commands via Amazon Alexa and Google Assistant, giving you ultimate convenience and customization. Backed by an industry-leading warranty, including a limited lifetime warranty, a 7-year compressor warranty, and a 5-year parts warranty, this system offers long-term dependability and year-round comfort.

Features

  • Low Profile Installation
  • Fits between 16" Ceiling Joists
  • Works with Multi and Single Zone Systems
  • Two-Stage DC motor
  • Quiet Operation
  • Multiple Operating Modes
  • Remote Included
  • Advanced Filtration
  • Swing Technology

Dimensions

13.19" D x 8.98" H x 50.31" W

CFM

353 / 312 / 283 / 247 / 177

Voltage (V)

208-230

Phase

1

Cycle

60

Max Fuse Breaker (A)

15

Min Circuit Ampacity (A)

3

Mount Type

Ceiling

Color

White

Rated Load

1

Max Coverage Area

550

Refrigerant Type

R-454B

Decibel Rating (DBA)

37

Decibel Rating Low (DBA)

24

Decibel Rating High (DBA)

41

Air Flow Direction

1-Way

Liquid Line Size

1/4

Suction Line Size

3/8

Blower Motor RPM

1075/982/797

Filter Type

Reusable

Fan Only Option

Yes

Quiet Mode

Yes

Sleep Mode

Yes

Auto Cool

Yes

WIFI Compatibility

Yes

APP Compatibility

Yes

Works with IOS

Yes

Works with Android

Yes

Remote Control Included

Yes

Registered Warranty

Limited Lifetime Compressor

Base Warranty

5-Year Part/7-Year Compressor

Bas Parts Warranty

5 Years

Registered Compressor Warranty

Limited Lifetime Compressor

Base Compressor Warranty

7 Years

Has Batteries

Yes

Contains Electronics

Yes

Contains Chemicals

Yes

Contains Aerosol

Yes

Contains Compressed Gas

Yes

Proposition 65 Warning

Yes

Restricted States

GU;PR;VI

Net Weight (Lbs)

45

Gross Weight (Lbs)

88

MRCOOL DIY® Series 5th Gen OuttaSight® 9K BTU 230V One-Way Ceiling Cassette Air Handler (DIYCASSETTE09HP-230D25-O)
MRCOOL DIY® Series 5th Gen OuttaSight® 9K BTU 230V One-Way Ceiling Cassette Air Handler (DIYCASSETTE09HP-230D25-O) View Product x5
Description
Product Specs
Manuals & Guides

The 5th Generation MRCOOL® DIY® Series OuttaSight® 9K BTU 230V One-Way Ceiling Cassette provides a powerful and efficient climate control solution for areas up to 400 sq. ft. Designed for simple installation, this unit eliminates the need for specialized tools, making setup quick, cost-effective, and straightforward. Made for multi-zone configurations, the cassette is engineered to fit seamlessly between 16” ceiling joists, including pre-manufactured I-joists, ensuring a discreet, flush-mounted appearance. Unlike conventional ceiling cassettes that require bulky ductwork or dedicated wall space, this unit offers versatile installation, making it a perfect choice for new construction or retrofit applications.

This cassette works effortlessly with the MRCOOL® DIY® Quick Connect® line set, which is pre-charged with R-454B refrigerant, an eco-friendly solution that removes the need for vacuuming. It features advanced filtration to improve indoor air quality, while the Elevation function makes filter maintenance easy by lowering the panel for hassle-free access. With whisper-quiet operation and multiple control options—including a wireless remote, SmartHVAC app, and voice control via Amazon Alexa and Google Assistant—this system ensures customized comfort. Supported by an industry-leading warranty, including a limited lifetime warranty, 7-year compressor warranty, and 5-year parts warranty, the MRCOOL® Outtasight® Ceiling Cassette guarantees long-lasting performance, modern technology, and year-round climate control.

Features

  • Low Profile Installation
  • Fits between 16" Ceiling Joists
  • Works with Multi and Single Zone Systems
  • Two-Stage DC motor
  • Quiet Operation
  • Multiple Operating Modes
  • Remote Included
  • Advanced Filtration
  • Swing Technology

Dimensions

13.19" D x 8.98" H x 50.31" W

CFM

341 / 294 / 259 / 235 / 235

Voltage (V)

208-230

Phase

1

Cycle

60

Max Fuse Breaker (A)

15

Min Circuit Ampacity (A)

3

Mount Type

Ceiling

Color

White

Rated Load

0.8

Max Coverage Area

400

Refrigerant Type

R-454B

Decibel Rating (DBA)

36

Decibel Rating Low (DBA)

24

Decibel Rating High (DBA)

38

Air Flow Direction

1-Way

Liquid Line Size

1/4

Suction Line Size

3/8

Blower Motor RPM

1104/994/784

Filter Type

Reusable

Fan Only Option

Yes

Quiet Mode

Yes

Sleep Mode

Yes

Auto Cool

Yes

WIFI Compatibility

Yes

APP Compatibility

Yes

Works with IOS

Yes

Works with Android

Yes

Remote Control Included

Yes

Registered Warranty

Limited Lifetime Compressor

Base Warranty

5-Year Part/7-Year Compressor

Bas Parts Warranty

5 Years

Registered Compressor Warranty

Limited Lifetime Compressor

Base Compressor Warranty

7 Years

Has Batteries

Yes

Contains Electronics

Yes

Contains Chemicals

Yes

Contains Aerosol

Yes

Contains Compressed Gas

Yes

Proposition 65 Warning

Yes

Restricted States

GU;PR;VI

Net Weight (Lbs)

45

Gross Weight (Lbs)

88

MRCOOL® DIY 5th Gen Remote Control for MRCOOL DIY Ductless Systems
MRCOOL® DIY 5th Gen Remote Control for MRCOOL DIY Ductless Systems View Product
Description
Product Specs
Manuals & Guides

This remote is included with each air handler in MRCOOL's 5th Generation DIY Ductless Mini Split Systems.

Dimensions 2" W x 6" L x 1" H 
Works with MRCOOL DIY 5th Generation Mini Splits
Restricted States GU;PR;VI
Color White

Mini Split FAQ

 

What BTU rating should I choose for my air handler?

  • This depends on the coverage area/room size you are trying to heat/cool
  • An Air Handler's BTU is how powerful the fan is. A higher BTU rating will be able to heat/cool a larger area
Air Handler BTU Coverage Area/Room Size (Sq. Ft.)*
6K
Up to 200 Sq. Ft.
9K
Up to 375 Sq. Ft.
12K Up to 500 Sq. Ft.
18K Up to 750 Sq. Ft.
24k Up to 1,000 Sq. Ft.
36k Up to 1,500 Sq. Ft.

 

*Ceiling height, insulation, and local climate may impact the coverage area. For example, an uninsulated room will require more power than a well insulated room.

Shipping & Returns

*Shipping Policy

  • Shipping is Free
  • Large appliances ship via Freight Curbside shipment. Meaning the carrier will drop off your item on your property not inside your home. The courier company will call ahead of time to schedule a drop off date
  • For the full details, visit our Shipping Page

Return/Refund Policy
  • 30-Day Return Policy
  • If your order arrives damaged, we will exchange you for a new one. Damage must be reported within 24 hours. 
  • For more details, visit our Return Policy Page

 

Email Quote

Customer Reviews

Based on 40 reviews
85%
(34)
13%
(5)
3%
(1)
0%
(0)
0%
(0)
R
Robert W. (Marietta, GA)
Decent Company

I ordered a HVAC system and it arrived in a timely manner and with no apparent issues. I thought the system was defective once installed but it was the installers fault who wired it wrong. My only issue would be the fee (30% I believe) to return a defective item within the 30 day return policy. If it is defective the customer shouldn't have to pay a fee to return an item that is not operating as designed. Other than that this is a good company.

P
Peter K. (Phoenix, AZ)
Pretty Easy Install and Works Great!

Installed my own central HP system. It was a bit of work but nothing beyond a person with basic mechanical and electrical skills. It took me a while because I had to remove the existing electric forced air furnace from a pretty tight place. Some custom sheet metal work and a bit of custom electrical too. Worked perfectly when powered up and I actually like the thermostat provided, although I wish it was clearer how to set up a temperature set-back schedule. Pre-charged refrigerant piping was something new and I liked that too. The best thing is that my electric utility forked out $4,000 and that paid for the unit!

W
Wes D. (Chicago, IL)
Installed and working great

Installed with ceiling cassettes... Quiet and keeping us cool so far !

C
Chris S. (Denver, CO)
Good product great customer service

Very good customer service will be buying from them again

M
Marinus R.
Install

Was easy to install. Directions were easy to follow and unit is working great

Why buy a MRCOOL from Home Outlet Direct?

- We are an authorized MRCOOL dealer

- Industry leading sales and customer service

- Thousands of happy customers

Real Customers. Real Results.

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