Skip to content

MRCOOL DIY Mini Split - 45,000 BTU 4 Zone Ceiling Cassette Ductless Air Conditioner and Heat Pump with 35 ft. Install Kit, DIYM448HPC01C140

SKU DIYM448HPC01C140
by MRCOOL
Authorized Dealer Official
100% Authentic Guarantee
In stock, ready to ship

Fast shipping icon FREE EXPRESS SHIPPING: Process orders in 1 business day

Returns icon STRESS FREE RETURNS: 2 Year Returns

VIP icon PREMIUM QUALITY: Top Tier Products, Even Better Customer Care

Warranty icon 5 YEAR WARRANTY: We Believe In Our Products & Our Team

Professional installation icon PROFESSIONAL INSTALLATION: Get connected with certified, licensed installers in your area - Request installer quotes

$13,014.40

Notify me when back in stock

Estimated Shipping Widget will be displayed here!

Sticky Add to Cart Button
Description

MRCOOL DIY Mini Split - 48,000 BTU 5 Zone Ceiling Cassette Ductless Air Conditioner and Heat Pump with 35 ft. Install Kit, DIY-MULTI5-48HP230C

Step into a new era of climate control with the MRCOOL 4th Gen DIY Mini Split system—a powerful, versatile solution designed to deliver personalized comfort across multiple zones with unmatched ease. Whether outfitting homes, garages, workshops, or commercial spaces, this system lets you take command of the environment without relying on costly professional installation. Imagine offering your customers the perfect balance of performance, efficiency, and convenience—all wrapped into one sleek package.

Robust, High-Performance Condenser Built to Last

At the core of this system is a 48,000 BTU condenser engineered for durability and efficiency. Thanks to the Gold Fin® corrosion-resistant coating, it stands strong against harsh weather and coastal conditions, ensuring long-term reliability. With an impressive 20.5 SEER2 and 8.5 HSPF-5 rating, it delivers significant energy savings while maintaining consistent comfort. Even when temperatures dip as low as 5°F, this condenser reliably provides warmth, making it an ideal choice for year-round climate control. Plus, a 7-year compressor warranty and 5-year parts warranty give you and your customers peace of mind.

Sleek Ceiling Cassette Air Handlers for Tailored Comfort

This system features two sizes of ceiling cassette air handlers designed to fit discreetly between 16” ceiling joists, creating a clean, modern look without sacrificing performance:

  • 9,000 BTU Air Handler: Perfect for smaller spaces between 180 and 375 square feet, offering precise control for bedrooms, offices, or cozy workshops.
  • 18,000 BTU Air Handler: Ideal for medium-sized rooms ranging from 501 to 750 square feet, delivering powerful heating and cooling exactly where it’s needed.

Both units integrate seamlessly with MRCOOL’s DIY 4th Gen Multi-Zone system, eliminating the need for ductwork and enabling efficient, zone-specific climate control. Control is effortless with the SmartHVAC app, letting you or your customers adjust settings remotely from any smartphone or tablet.

Installation Made Simple—Save Time and Money

MRCOOL’s patented Pre-Charged Quick Connect Line Sets revolutionize installation. These copper line sets come pre-filled with R-410A refrigerant, allowing you to bypass vacuum pumps and avoid costly technician fees. Each indoor unit connects with its own dedicated line set, ensuring optimal system performance. Need more reach? The included coupler kit lets you link two line sets for extended coverage, giving you the flexibility to tackle any project with confidence.

Electrical Specifications
  • Power Supply: 208-230V / 60 Hz / 1 phase
  • Minimum Circuit (Disconnect): 40.0 A
  • Maximum Fuse (Breaker): 60.0 A

Why Choose the MRCOOL DIY 48K BTU Multi-Zone Mini Split?
  • Powerful 48,000 BTU condenser with corrosion-resistant Gold Fin® coating
  • Two ceiling cassette options (9K and 18K BTU) for versatile multi-zone comfort
  • Energy-efficient operation with 20.5 SEER2 and 8.5 HSPF-5 ratings
  • Pre-charged quick connect line sets for fast, DIY-friendly installation
  • SmartHVAC app control for remote, intuitive management
  • Comprehensive warranties for lasting peace of mind

Visualize delivering your clients a cutting-edge HVAC solution that offers total comfort control, sleek aesthetics, and installation simplicity—all while maximizing your business efficiency and profitability. The MRCOOL DIY Mini Split 48K BTU system is the smart, future-ready choice for professionals who demand quality and ease in every project.

 

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 (18K BTU)

  • Compact Ceiling Installation: The MRCOOL DIY Series OuttaSight 18k BTU Ceiling Cassette fits neatly within 16” ceiling joists for a clean and unobtrusive appearance.
  • Multi-Zone Compatibility: Built to work with the DIY 4th gen MZ system for multi-zone functionality and ductless operation.
  • Ideal Coverage Area: Capable of managing heating and cooling needs in spaces of 501 to 750 square feet with ease.
  • Remote Control Access: Take full command using the SmartHVAC app, ensuring convenience whether at home or away.
  • Effortless Installation: With MRCOOL’s Pre-Charged Quick Connect Line Set, setting up the unit is fast and hassle-free—no professional tools required.

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 18K BTU
Product Dimensions 50.31"W x 13.19"D x 8.98"H
Mount Type Ceiling Cassette
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
Line Set
Length 35 Feet
Liquid Line Size 1/4"
Suction Line Size 1/2"

 

WHAT'S INCLUDED
  • 1 x 48K BTU Condenser
  • 3 x 9K BTU Air Handler
  • 1 x 18K 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 + 9k + 9k + 18k

  • 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 - 48,000 BTU 5 Zone Ceiling Cassette Ductless Air Conditioner and Heat Pump with 35 ft. Install Kit, DIY-MULTI5-48HP230C

Step into a new era of climate control with the MRCOOL 4th Gen DIY Mini Split system—a powerful, versatile solution designed to deliver personalized comfort across multiple zones with unmatched ease. Whether outfitting homes, garages, workshops, or commercial spaces, this system lets you take command of the environment without relying on costly professional installation. Imagine offering your customers the perfect balance of performance, efficiency, and convenience—all wrapped into one sleek package.

Robust, High-Performance Condenser Built to Last

At the core of this system is a 48,000 BTU condenser engineered for durability and efficiency. Thanks to the Gold Fin® corrosion-resistant coating, it stands strong against harsh weather and coastal conditions, ensuring long-term reliability. With an impressive 20.5 SEER2 and 8.5 HSPF-5 rating, it delivers significant energy savings while maintaining consistent comfort. Even when temperatures dip as low as 5°F, this condenser reliably provides warmth, making it an ideal choice for year-round climate control. Plus, a 7-year compressor warranty and 5-year parts warranty give you and your customers peace of mind.

Sleek Ceiling Cassette Air Handlers for Tailored Comfort

This system features two sizes of ceiling cassette air handlers designed to fit discreetly between 16” ceiling joists, creating a clean, modern look without sacrificing performance:

  • 9,000 BTU Air Handler: Perfect for smaller spaces between 180 and 375 square feet, offering precise control for bedrooms, offices, or cozy workshops.
  • 18,000 BTU Air Handler: Ideal for medium-sized rooms ranging from 501 to 750 square feet, delivering powerful heating and cooling exactly where it’s needed.

Both units integrate seamlessly with MRCOOL’s DIY 4th Gen Multi-Zone system, eliminating the need for ductwork and enabling efficient, zone-specific climate control. Control is effortless with the SmartHVAC app, letting you or your customers adjust settings remotely from any smartphone or tablet.

Installation Made Simple—Save Time and Money

MRCOOL’s patented Pre-Charged Quick Connect Line Sets revolutionize installation. These copper line sets come pre-filled with R-410A refrigerant, allowing you to bypass vacuum pumps and avoid costly technician fees. Each indoor unit connects with its own dedicated line set, ensuring optimal system performance. Need more reach? The included coupler kit lets you link two line sets for extended coverage, giving you the flexibility to tackle any project with confidence.

Electrical Specifications
  • Power Supply: 208-230V / 60 Hz / 1 phase
  • Minimum Circuit (Disconnect): 40.0 A
  • Maximum Fuse (Breaker): 60.0 A

Why Choose the MRCOOL DIY 48K BTU Multi-Zone Mini Split?
  • Powerful 48,000 BTU condenser with corrosion-resistant Gold Fin® coating
  • Two ceiling cassette options (9K and 18K BTU) for versatile multi-zone comfort
  • Energy-efficient operation with 20.5 SEER2 and 8.5 HSPF-5 ratings
  • Pre-charged quick connect line sets for fast, DIY-friendly installation
  • SmartHVAC app control for remote, intuitive management
  • Comprehensive warranties for lasting peace of mind

Visualize delivering your clients a cutting-edge HVAC solution that offers total comfort control, sleek aesthetics, and installation simplicity—all while maximizing your business efficiency and profitability. The MRCOOL DIY Mini Split 48K BTU system is the smart, future-ready choice for professionals who demand quality and ease in every project.

 

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 (18K BTU)

  • Compact Ceiling Installation: The MRCOOL DIY Series OuttaSight 18k BTU Ceiling Cassette fits neatly within 16” ceiling joists for a clean and unobtrusive appearance.
  • Multi-Zone Compatibility: Built to work with the DIY 4th gen MZ system for multi-zone functionality and ductless operation.
  • Ideal Coverage Area: Capable of managing heating and cooling needs in spaces of 501 to 750 square feet with ease.
  • Remote Control Access: Take full command using the SmartHVAC app, ensuring convenience whether at home or away.
  • Effortless Installation: With MRCOOL’s Pre-Charged Quick Connect Line Set, setting up the unit is fast and hassle-free—no professional tools required.

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 18K BTU
Product Dimensions 50.31"W x 13.19"D x 8.98"H
Mount Type Ceiling Cassette
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
Line Set
Length 35 Feet
Liquid Line Size 1/4"
Suction Line Size 1/2"

 

WHAT'S INCLUDED
  • 1 x 48K BTU Condenser
  • 3 x 9K BTU Air Handler
  • 1 x 18K 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

You'll hear from us during business hours

Request an Installer

Need Professional Installation?

Get Connected with Certified HVAC Installers:

  • ✓ Pre-Vetted, Licensed & Insured Installers
  • ✓ 2-3 Local Options in Your Area
  • ✓ Specialists in Your Equipment Type
  • ✓ Competitive, Transparent Pricing
  • ✓ 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

"I bought a heat pump online but wasn't sure about installation. HVAC Hive connected me with three local contractors within hours. I chose one based on reviews and pricing - he installed it perfectly the next week. Made the whole process so much easier!"
- Jennifer M., Homeowner, Phoenix AZ

✓ No obligation quotes | ✓ All installers background checked | ✓ Free service - you only pay the installer

We'll connect you with installers within 48 hours during business days

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, DIYM448HPC01C140

Most Frequently Asked Questions

Yes, MRCOOL DIY mini splits are generally considered good, offering easy installation, dependable performance, and energy efficiency, making them a popular choice for homeowners who want a do-it-yourself solution.
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

Running a mini-split typically costs between $30 and $80 per month, depending on factors like the unit’s size, usage hours, electricity rates, and local climate conditions
Mini splits are generally energy-efficient for heating because they use heat pump technology, which transfers heat rather than generating it by burning fuel or using resistance coils. This means they typically use less electricity than traditional electric heaters, though actual electricity use depends on factors like outdoor temperature, system size, and insulation.

Reviews

Express Free Shipping

Process orders within 1-2 days

Stress Free Returns

Get Covered for (730 days) Returns

Premum Quality

Top Tier Products, Even Better Customer Care

5 Year Warranty

We Believe In Our Products & Our Team