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MRCOOL DIY Mini Split - 45,000 BTU 4 Zone Ceiling Cassette Ductless Air Conditioner and Heat Pump with 35 ft. Install Kit, DIYM448HPC05C140

SKU DIYM448HPC05C140
by MRCOOL
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Description

MRCOOL DIY Mini Split - 45,000 BTU 4 Zone Ceiling Cassette Ductless Air Conditioner and Heat Pump with 35 ft. Install Kit, DIYM448HPC05C140

Imagine delivering cutting-edge climate control solutions to your clients with a system that’s as easy to install as it is powerful. The MRCOOL 4th Gen DIY Mini Split system is engineered for professionals like you—business owners and contractors who demand efficiency, reliability, and versatility without the hassle of complicated setups or expensive technician calls.

Why Choose MRCOOL DIY Mini Split?

This 48,000 BTU multi-zone system offers four sleek ceiling cassette air handlers designed to fit effortlessly between standard 16” ceiling joists. Your customers get a clean, modern look that blends seamlessly into any space—whether it’s a home, garage, or workshop—without bulky ductwork or disruptive renovations.

Effortless Installation Saves You Time and Money

Thanks to MRCOOL’s patented Pre-Charged Quick Connect Line Sets, you can forget about vacuum pumps and refrigerant charging. Each line set comes pre-filled with R-410A refrigerant, allowing you to connect indoor units to the condenser quickly and confidently. This means less time on the job, faster turnarounds, and more satisfied clients.

  • No special tools or vacuuming required
  • Coupler kits available for extended reach and flexibility
  • One line set per indoor unit ensures optimal performance
Built to Perform and Last

The 48K BTU condenser is coated with Gold Fin® technology to resist corrosion and wear, ensuring durability in all climates. With a stellar 20.5 SEER2 cooling rating and 8.5 HSPF-5 heating efficiency, this system delivers significant energy savings your customers will appreciate on their utility bills.

Plus, it’s winter-ready—reliable heating down to 5°F outdoor temperatures means year-round comfort, no matter where you or your clients are located.

Multi-Zone Flexibility for Any Space

The system includes two types of ceiling cassette air handlers:

  • 9K BTU Unit: Perfect for rooms between 180 and 375 sq. ft.
  • 12K BTU Unit: Ideal for larger spaces from 376 to 500 sq. ft.

Both are fully compatible with MRCOOL’s 4th Gen Multi-Zone system, allowing you to customize setups to fit multiple rooms without ductwork. Your clients get precise comfort control in every zone, and you get a versatile product that fits countless applications.

Smart Control at Your Fingertips

Every indoor unit is compatible with the SmartHVAC app, empowering your customers to adjust temperature settings remotely via smartphone or tablet. This modern convenience adds value and satisfaction, making your installations stand out.


Key Benefits at a Glance:
  • DIY-Friendly: Pre-charged line sets and quick connect fittings reduce installation time and complexity
  • Energy Efficient: High SEER2 and HSPF ratings save money on operating costs
  • Durable: Gold Fin® condenser coating extends equipment life
  • Flexible: Multi-zone design with ceiling cassette air handlers for clean, ductless installations
  • Smart Control: Remote operation via SmartHVAC app for ultimate convenience
  • Reliable Heating: Operates efficiently down to 5°F outdoor temperature
  • Warranty: 7-year compressor and 5-year parts coverage for peace of mind

When you choose the MRCOOL DIY Mini Split system, you’re not just buying HVAC equipment—you’re investing in faster installs, happier clients, and a reputation for delivering top-tier comfort solutions with ease. Equip your business with the technology that makes your job easier and your customers more comfortable.

Condenser (48K BTU)

  • Streamlined Installation: Take control with MRCOOL’s patented Pre-Charged Quick Connect Line Sets, making installation a breeze without the need for professional assistance.
  • Resilient Protection: Stay safeguarded against wear with the Gold Fin® condenser coating.
  • Unmatched Efficiency: Enjoy remarkable energy savings with a 20.5 SEER2 and 8.5 HSPF-5 rating.
  • Winter-Ready: Generate warmth reliably, even when outdoor temperatures reach as low as 5°F.
  • Comprehensive Warranty: Benefit from a 7-year compressor warranty and a 5-year parts warranty.

Air Handler (9K BTU)

  • Compact Ceiling Installation: The MRCOOL DIY Series OuttaSight 9k BTU Ceiling Cassette fits seamlessly between 16” ceiling joists, delivering a sleek and space-saving installation.
  • Multi-Zone Compatibility: Designed to integrate with the DIY 4th gen MZ system, it enables multi-zone configurations and eliminates the need for ductwork.
  • Ideal Coverage Area: Perfect for spaces ranging from 180 to 375 square feet, making it suitable for both small and medium-sized rooms.
  • Remote Control Access: Enjoy effortless control with SmartHVAC app compatibility, enabling management from anywhere via a smartphone or tablet.
  • Effortless Installation: Simplify setup with MRCOOL’s Pre-Charged Quick Connect Line Set—no vacuuming or special tools needed.

Air Handler (12K BTU)

  • Compact Ceiling Installation: The MRCOOL DIY Series OuttaSight 12k BTU Ceiling Cassette fits easily between 16” ceiling joists for a modern, low-profile look.
  • Multi-Zone Compatibility: Operates smoothly with the DIY 4th gen MZ system to support multi-zone configurations and remove the need for ductwork.
  • Ideal Coverage Area: Designed to efficiently heat or cool spaces between 376 and 500 square feet.
  • Remote Control Access: Gain full control of your unit with the SmartHVAC app, providing convenience from virtually anywhere.
  • Effortless Installation: Installation is a breeze with MRCOOL’s Pre-Charged Quick Connect Line Set, allowing a fast and simple setup process.

Line Set

  • Optimized System Performance: The advanced copper line set connects the MRCOOL Condenser to MRCOOL Air Handlers, enhancing performance for your Multi-Zone system. One line set per indoor unit ensures seamless operation.
  • Pre-Charged Convenience: Designed for simplicity, these line sets are pre-filled with R-410A refrigerant, making installation quick and hassle-free.
  • DIY and Cost Savings: Skip the expensive technician fees with our user-friendly design. Install confidently and save money without compromising quality.
  • Extended Flexibility: Need additional reach? Our coupler kit allows you to effortlessly connect two standard line sets, ensuring unlimited cooling and heating coverage.

 

ELECTRICAL REQUIREMENTS

Model DIY-MULTI5-48HP230C
Type 48K BTU Condenser
BTU 48,000 BTU
Power Supply 208-230V/60 Hz/1ph
Minimum Circuit (Disconnect) 40.0 A
Maximum Fuse (Breaker) 60.0 A

 

SPECIFICATIONS & DIMENSIONS
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 50.31"W x 13.19"D x 8.98"H
Mount Type Ceiling Cassette
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 50.31"W x 13.19"D x 8.98"H
Mount Type Ceiling Cassette
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
Line Set
Length 35 Feet
Liquid Line Size 1/4"
Suction Line Size 1/2"

 

WHAT'S INCLUDED
  • 1 x 48K BTU Condenser
  • 1 x 9K BTU Air Handler
  • 3 x 12K BTU Air Handler
  • 4 x 35 ft. 1/4 x 1/2 Line Set
Shipping and Return

We offer Free Express Shipping on all of our products. Handling times are 1-2 business days and Delivery takes roughly 3-14 Business days 

For more Shipping information visit here

We offer a 2 Year (730 Day) return for our products. 

For more Return information visit here

COVERAGE AREA

HIVE WARRANTY

HVAC Hive Warranty Information:

HVAC Hive is an authorized dealer for every product on our website. Every HVAC system and component comes with its original manufacturer's warranty, guaranteeing you receive a functional, quality product.

Our 5-Year Parts & Labor Warranty Promise: We go beyond the standard coverage. If a manufacturer's warranty doesn't cover your product for a full 5 years, HVAC Hive will extend both parts and labor warranty to complete the 5-year coverage period.

Example: If your manufacturer covers 2 years parts & labor, we'll cover an additional 3 years — giving you a full 5 years of parts and labor protection.

Warranty Coverage Includes:

  • Parts replacement for manufacturing defects
  • Labor costs for covered repairs
  • System malfunctions and component failures

Warranty Details:

  • Residential, light commercial, and full commercial warranties vary based on your usage
  • Specific warranty terms and coverage periods are listed on each product page
  • Both parts and labor are covered under our extended warranty program

Making a Warranty Claim: Contact our Worker Bee Support team at 1-888-712-2465 or karim@hvachive.com . We'll handle your claim quickly and professionally, covering both parts and labor costs. You can also contact the manufacturer directly if preferred.

Questions? Need help understanding your parts & labor warranty coverage? Our team is here to explain the details and ensure you're fully protected.

Contact US
Request an Installer

Product Overview

  • Zone / ROOM:

    Zone / ROOM: 4 Zone

  • Air Handler BTU:

    Air Handler BTU: 9k + 12k + 12k + 12k

  • Condenser BTU:

    Condenser BTU: 48k

  • Outdoor Operating Temp (Cool/ heat):

    Outdoor Operating Temp (Cool/ heat): Heating -13°F to 75.2°F & Cooling 5°F to 122°F

  • Warranty

    Warranty 7-year compressor warranty & 5-year parts warranty

Description

MRCOOL DIY Mini Split - 45,000 BTU 4 Zone Ceiling Cassette Ductless Air Conditioner and Heat Pump with 35 ft. Install Kit, DIYM448HPC05C140

Imagine delivering cutting-edge climate control solutions to your clients with a system that’s as easy to install as it is powerful. The MRCOOL 4th Gen DIY Mini Split system is engineered for professionals like you—business owners and contractors who demand efficiency, reliability, and versatility without the hassle of complicated setups or expensive technician calls.

Why Choose MRCOOL DIY Mini Split?

This 48,000 BTU multi-zone system offers four sleek ceiling cassette air handlers designed to fit effortlessly between standard 16” ceiling joists. Your customers get a clean, modern look that blends seamlessly into any space—whether it’s a home, garage, or workshop—without bulky ductwork or disruptive renovations.

Effortless Installation Saves You Time and Money

Thanks to MRCOOL’s patented Pre-Charged Quick Connect Line Sets, you can forget about vacuum pumps and refrigerant charging. Each line set comes pre-filled with R-410A refrigerant, allowing you to connect indoor units to the condenser quickly and confidently. This means less time on the job, faster turnarounds, and more satisfied clients.

  • No special tools or vacuuming required
  • Coupler kits available for extended reach and flexibility
  • One line set per indoor unit ensures optimal performance
Built to Perform and Last

The 48K BTU condenser is coated with Gold Fin® technology to resist corrosion and wear, ensuring durability in all climates. With a stellar 20.5 SEER2 cooling rating and 8.5 HSPF-5 heating efficiency, this system delivers significant energy savings your customers will appreciate on their utility bills.

Plus, it’s winter-ready—reliable heating down to 5°F outdoor temperatures means year-round comfort, no matter where you or your clients are located.

Multi-Zone Flexibility for Any Space

The system includes two types of ceiling cassette air handlers:

  • 9K BTU Unit: Perfect for rooms between 180 and 375 sq. ft.
  • 12K BTU Unit: Ideal for larger spaces from 376 to 500 sq. ft.

Both are fully compatible with MRCOOL’s 4th Gen Multi-Zone system, allowing you to customize setups to fit multiple rooms without ductwork. Your clients get precise comfort control in every zone, and you get a versatile product that fits countless applications.

Smart Control at Your Fingertips

Every indoor unit is compatible with the SmartHVAC app, empowering your customers to adjust temperature settings remotely via smartphone or tablet. This modern convenience adds value and satisfaction, making your installations stand out.


Key Benefits at a Glance:
  • DIY-Friendly: Pre-charged line sets and quick connect fittings reduce installation time and complexity
  • Energy Efficient: High SEER2 and HSPF ratings save money on operating costs
  • Durable: Gold Fin® condenser coating extends equipment life
  • Flexible: Multi-zone design with ceiling cassette air handlers for clean, ductless installations
  • Smart Control: Remote operation via SmartHVAC app for ultimate convenience
  • Reliable Heating: Operates efficiently down to 5°F outdoor temperature
  • Warranty: 7-year compressor and 5-year parts coverage for peace of mind

When you choose the MRCOOL DIY Mini Split system, you’re not just buying HVAC equipment—you’re investing in faster installs, happier clients, and a reputation for delivering top-tier comfort solutions with ease. Equip your business with the technology that makes your job easier and your customers more comfortable.

Condenser (48K BTU)

  • Streamlined Installation: Take control with MRCOOL’s patented Pre-Charged Quick Connect Line Sets, making installation a breeze without the need for professional assistance.
  • Resilient Protection: Stay safeguarded against wear with the Gold Fin® condenser coating.
  • Unmatched Efficiency: Enjoy remarkable energy savings with a 20.5 SEER2 and 8.5 HSPF-5 rating.
  • Winter-Ready: Generate warmth reliably, even when outdoor temperatures reach as low as 5°F.
  • Comprehensive Warranty: Benefit from a 7-year compressor warranty and a 5-year parts warranty.

Air Handler (9K BTU)

  • Compact Ceiling Installation: The MRCOOL DIY Series OuttaSight 9k BTU Ceiling Cassette fits seamlessly between 16” ceiling joists, delivering a sleek and space-saving installation.
  • Multi-Zone Compatibility: Designed to integrate with the DIY 4th gen MZ system, it enables multi-zone configurations and eliminates the need for ductwork.
  • Ideal Coverage Area: Perfect for spaces ranging from 180 to 375 square feet, making it suitable for both small and medium-sized rooms.
  • Remote Control Access: Enjoy effortless control with SmartHVAC app compatibility, enabling management from anywhere via a smartphone or tablet.
  • Effortless Installation: Simplify setup with MRCOOL’s Pre-Charged Quick Connect Line Set—no vacuuming or special tools needed.

Air Handler (12K BTU)

  • Compact Ceiling Installation: The MRCOOL DIY Series OuttaSight 12k BTU Ceiling Cassette fits easily between 16” ceiling joists for a modern, low-profile look.
  • Multi-Zone Compatibility: Operates smoothly with the DIY 4th gen MZ system to support multi-zone configurations and remove the need for ductwork.
  • Ideal Coverage Area: Designed to efficiently heat or cool spaces between 376 and 500 square feet.
  • Remote Control Access: Gain full control of your unit with the SmartHVAC app, providing convenience from virtually anywhere.
  • Effortless Installation: Installation is a breeze with MRCOOL’s Pre-Charged Quick Connect Line Set, allowing a fast and simple setup process.

Line Set

  • Optimized System Performance: The advanced copper line set connects the MRCOOL Condenser to MRCOOL Air Handlers, enhancing performance for your Multi-Zone system. One line set per indoor unit ensures seamless operation.
  • Pre-Charged Convenience: Designed for simplicity, these line sets are pre-filled with R-410A refrigerant, making installation quick and hassle-free.
  • DIY and Cost Savings: Skip the expensive technician fees with our user-friendly design. Install confidently and save money without compromising quality.
  • Extended Flexibility: Need additional reach? Our coupler kit allows you to effortlessly connect two standard line sets, ensuring unlimited cooling and heating coverage.

 

ELECTRICAL REQUIREMENTS

Model DIY-MULTI5-48HP230C
Type 48K BTU Condenser
BTU 48,000 BTU
Power Supply 208-230V/60 Hz/1ph
Minimum Circuit (Disconnect) 40.0 A
Maximum Fuse (Breaker) 60.0 A

 

SPECIFICATIONS & DIMENSIONS
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 50.31"W x 13.19"D x 8.98"H
Mount Type Ceiling Cassette
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 50.31"W x 13.19"D x 8.98"H
Mount Type Ceiling Cassette
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
Line Set
Length 35 Feet
Liquid Line Size 1/4"
Suction Line Size 1/2"

 

WHAT'S INCLUDED
  • 1 x 48K BTU Condenser
  • 1 x 9K BTU Air Handler
  • 3 x 12K BTU Air Handler
  • 4 x 35 ft. 1/4 x 1/2 Line Set
Shipping and Return

We offer Free Express Shipping on all of our products. Handling times are 1-2 business days and Delivery takes roughly 3-14 Business days 

For more Shipping information visit here

We offer a 2 Year (730 Day) return for our products. 

For more Return information visit here

COVERAGE AREA

HIVE WARRANTY

HVAC Hive Warranty Information:

HVAC Hive is an authorized dealer for every product on our website. Every HVAC system and component comes with its original manufacturer's warranty, guaranteeing you receive a functional, quality product.

Our 5-Year Parts & Labor Warranty Promise: We go beyond the standard coverage. If a manufacturer's warranty doesn't cover your product for a full 5 years, HVAC Hive will extend both parts and labor warranty to complete the 5-year coverage period.

Example: If your manufacturer covers 2 years parts & labor, we'll cover an additional 3 years — giving you a full 5 years of parts and labor protection.

Warranty Coverage Includes:

  • Parts replacement for manufacturing defects
  • Labor costs for covered repairs
  • System malfunctions and component failures

Warranty Details:

  • Residential, light commercial, and full commercial warranties vary based on your usage
  • Specific warranty terms and coverage periods are listed on each product page
  • Both parts and labor are covered under our extended warranty program

Making a Warranty Claim: Contact our Worker Bee Support team at 1-888-712-2465 or karim@hvachive.com . We'll handle your claim quickly and professionally, covering both parts and labor costs. You can also contact the manufacturer directly if preferred.

Questions? Need help understanding your parts & labor warranty coverage? Our team is here to explain the details and ensure you're fully protected.

Contact US

Commercial HVAC PROS!

Unlock Installer Benefits Now:

  • ✓ Exclusive BULK Pricing
  • ✓ Limited Time Deals
  • ✓ Unmatched Service & Support
  • ✓ Technical support
  • ✓ Extended Warranty & Maintenance
"Their technical expertise in commercial HVAC systems is outstanding. From equipment selection to installation support, they provided everything we needed. The bulk pricing saved us thousands on our multi-building project, and their 24/7 technical support kept us running smoothly."
- Marcus R., HVAC Project Manager, 06/24

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  • ✓ Pre-Vetted, Licensed & Insured Installers
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  • ✓ Fast Response - Within 24 Hours

How it works:

1. Fill out the form below with your project details
2. We'll match you with 2-3 qualified installers in your area
3. Installers contact you directly with quotes and availability
4. You choose the best fit for your project

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Frequently Asked Questions about MRCOOL DIY Mini Split - 45,000 BTU 4 Zone Ceiling Cassette Ductless Air Conditioner and Heat Pump with 35 ft. Install Kit, DIYM448HPC05C140

Most Frequently Asked Questions

MRCOOL DIY mini splits are highly rated for their easy self-installation, reliable performance, and energy efficiency, making them a popular and convenient option for homeowners who want to handle installation themselves.
A MRCOOL mini-split typically lasts 10 to 20 years with proper installation and regular maintenance
The cost to install a MRCOOL mini-split system typically ranges from $3,000 to $10,000, depending on the size, number of zones, and installation complexity, with DIY installation potentially saving $500 to $2,000 in labor costs

Other Questions

Yes, mini-split systems are often worth it because they provide efficient, zoned heating and cooling with lower energy costs, easy installation (especially DIY models like MRCOOL), and improved comfort without the need for ductwork, making them ideal for homes without existing ducts or for room-by-room temperature control.
A split system generally refers to a traditional central HVAC setup with an outdoor condenser and an indoor air handler connected via ductwork to cool or heat an entire home. A mini-split system (also called ductless split) also has an outdoor condenser and indoor unit but does not use ductwork; instead, it delivers heating and cooling directly to individual rooms or zones, offering more flexible, energy-efficient, and targeted climate control.

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Express Free Shipping

Process orders within 1-2 days

Stress Free Returns

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Premum Quality

Top Tier Products, Even Better Customer Care

5 Year Warranty

We Believe In Our Products & Our Team