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PREMIUM QUALITY: Top Tier Products, Even Better Customer Care
5 YEAR WARRANTY: We Believe In Our Products & Our Team
- Description
- What’s Included?
- Envision the Impact
- Why MRCOOL Works for You
- The Contractor’s Edge
- Shipping and Return
- COVERAGE AREA
MRCOOL DIY Mini Split - 39,000 BTU 3 Zone Ductless Air Conditioner and Heat Pump with 25 ft. Install Kit, DIY348HP09121825
For business owners and contractors who demand a powerful, flexible HVAC solution that’s easy to install and built to impress, the MRCOOL DIY Mini Split 3 Zone system is your ultimate partner in delivering comfort and efficiency. This 5th Generation system is designed to cool and heat three separate rooms effortlessly, giving you the freedom to complete installations quickly — without expensive technician fees.
This comprehensive package features a 48,000 BTU multi-zone condenser capable of supporting up to five zones, paired with three WiFi-enabled air handlers tailored for different room sizes: a 9,000 BTU unit for spaces up to 375 sq. ft., a 12,000 BTU unit for rooms up to 500 sq. ft., and an 18,000 BTU unit perfect for larger areas up to 750 sq. ft. Each air handler comes with its own remote control and a 25-foot pre-charged copper line set, engineered for seamless, tool-free installation.
Imagine transforming homes, offices, or commercial spaces where every room enjoys customized climate control — independently managed to suit occupant preferences. Whether it’s a chilly winter morning or a hot summer afternoon, your clients will experience consistent, whisper-quiet heating and cooling. The sleek, wall-mounted air handlers integrate effortlessly into interiors, while the durable condenser quietly operates outdoors, providing reliable performance in all seasons.
- DIY Installation Made Simple: MRCOOL’s patented pre-charged Quick Connect line sets eliminate the need for vacuum pumps or refrigerant handling, cutting installation time and costs dramatically.
- Energy Efficiency at Its Best: With an impressive 20.5 SEER rating and the ability to heat effectively down to 5°F, this system keeps energy bills low while maintaining comfort.
- Smart Control Convenience: The SmartHVAC app lets you or your clients adjust temperature and modes remotely via smartphone, adding a modern, user-friendly touch to every installation.
- Built to Last: Featuring corrosion-resistant Gold Fin® coating and backed by a limited lifetime compressor warranty (with registration), plus 7 years on the compressor and 5 years on parts, this system offers durability and peace of mind.
For contractors and business owners who want to provide a high-performance, multi-zone HVAC system that’s quick to install and delivers exceptional value, the MRCOOL DIY Mini Split 3 Zone with 25 ft. line sets is a smart investment. It empowers you to offer tailored comfort solutions that satisfy clients and streamline your workflow — all while maximizing your profitability. Make every project a success with this versatile, efficient system designed to impress.
Package Includes
- MRCOOL DIY Multi Zone 5-Zone 48K BTU Condenser, 5th Gen Series, DIY-MULTI5-48HP230C
- MRCOOL DIY 5th Generation 9K BTU Wall Mount Air Handler 230 Volt with Enhanced WiFi, DIY-09-HP-WMAH-230C25
- MRCOOL DIY 5th Generation 12K BTU Wall Mount Air Handler 230 Volt with Enhanced WiFi, DIY-12-HP-WMAH-230C25
- MRCOOL DIY 5th Generation 18K BTU Wall Mount Air Handler 230 Volt with Enhanced WiFi, DIY-18-HP-WMAH-230C25
- MRCOOL 25ft 1/4 x 1/2 Lineset for DIY 9K, 12K & 18K Indoor, DIY25-1412 (x3)
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 1
- 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.
Air Handler, 18K BTU, Quantity 1
- Large Coverage Area. Handler covers an area up to 750 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.
Line Set 25 ft., Quantity 3
- This 25 ft. copper line set connects the MRCOOL Condenser to the MR COOL Air Handlers. For Multi-Zone systems, one line set per indoor unit is required to ensure the system will function properly.
- Pre-Charged. These line sets come pre-charged with the precise amount of R-410A refrigerant.
- DIY & Save Money. This means the installation process can be performed without retaining the services of a certified technician - thus saving you money!
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 |
Min Ambient Cool | 5F ~ 122F |
Min Ambient Heat | 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 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 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 |
Air Handler 18K BTU
Product Dimensions | 42.52"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 from Cool, Heat or Fan-Only Dry - dehumidify Cool Heat Fan Only Quiet Sleep |
Line Set
Length | 25 Feet |
Liquid Line Size |
1/4" |
Suction Line Size | 1/2" |
Product Brochure
Performance Specifications
Warranty
Energy Guide
AHRI Certificate
For Shipping & return information visit here
- Description
- What’s Included?
- Envision the Impact
- Why MRCOOL Works for You
- The Contractor’s Edge
- Shipping and Return
- COVERAGE AREA
MRCOOL DIY Mini Split - 39,000 BTU 3 Zone Ductless Air Conditioner and Heat Pump with 25 ft. Install Kit, DIY348HP09121825
For business owners and contractors who demand a powerful, flexible HVAC solution that’s easy to install and built to impress, the MRCOOL DIY Mini Split 3 Zone system is your ultimate partner in delivering comfort and efficiency. This 5th Generation system is designed to cool and heat three separate rooms effortlessly, giving you the freedom to complete installations quickly — without expensive technician fees.
This comprehensive package features a 48,000 BTU multi-zone condenser capable of supporting up to five zones, paired with three WiFi-enabled air handlers tailored for different room sizes: a 9,000 BTU unit for spaces up to 375 sq. ft., a 12,000 BTU unit for rooms up to 500 sq. ft., and an 18,000 BTU unit perfect for larger areas up to 750 sq. ft. Each air handler comes with its own remote control and a 25-foot pre-charged copper line set, engineered for seamless, tool-free installation.
Imagine transforming homes, offices, or commercial spaces where every room enjoys customized climate control — independently managed to suit occupant preferences. Whether it’s a chilly winter morning or a hot summer afternoon, your clients will experience consistent, whisper-quiet heating and cooling. The sleek, wall-mounted air handlers integrate effortlessly into interiors, while the durable condenser quietly operates outdoors, providing reliable performance in all seasons.
- DIY Installation Made Simple: MRCOOL’s patented pre-charged Quick Connect line sets eliminate the need for vacuum pumps or refrigerant handling, cutting installation time and costs dramatically.
- Energy Efficiency at Its Best: With an impressive 20.5 SEER rating and the ability to heat effectively down to 5°F, this system keeps energy bills low while maintaining comfort.
- Smart Control Convenience: The SmartHVAC app lets you or your clients adjust temperature and modes remotely via smartphone, adding a modern, user-friendly touch to every installation.
- Built to Last: Featuring corrosion-resistant Gold Fin® coating and backed by a limited lifetime compressor warranty (with registration), plus 7 years on the compressor and 5 years on parts, this system offers durability and peace of mind.
For contractors and business owners who want to provide a high-performance, multi-zone HVAC system that’s quick to install and delivers exceptional value, the MRCOOL DIY Mini Split 3 Zone with 25 ft. line sets is a smart investment. It empowers you to offer tailored comfort solutions that satisfy clients and streamline your workflow — all while maximizing your profitability. Make every project a success with this versatile, efficient system designed to impress.
Package Includes
- MRCOOL DIY Multi Zone 5-Zone 48K BTU Condenser, 5th Gen Series, DIY-MULTI5-48HP230C
- MRCOOL DIY 5th Generation 9K BTU Wall Mount Air Handler 230 Volt with Enhanced WiFi, DIY-09-HP-WMAH-230C25
- MRCOOL DIY 5th Generation 12K BTU Wall Mount Air Handler 230 Volt with Enhanced WiFi, DIY-12-HP-WMAH-230C25
- MRCOOL DIY 5th Generation 18K BTU Wall Mount Air Handler 230 Volt with Enhanced WiFi, DIY-18-HP-WMAH-230C25
- MRCOOL 25ft 1/4 x 1/2 Lineset for DIY 9K, 12K & 18K Indoor, DIY25-1412 (x3)
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 1
- 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.
Air Handler, 18K BTU, Quantity 1
- Large Coverage Area. Handler covers an area up to 750 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.
Line Set 25 ft., Quantity 3
- This 25 ft. copper line set connects the MRCOOL Condenser to the MR COOL Air Handlers. For Multi-Zone systems, one line set per indoor unit is required to ensure the system will function properly.
- Pre-Charged. These line sets come pre-charged with the precise amount of R-410A refrigerant.
- DIY & Save Money. This means the installation process can be performed without retaining the services of a certified technician - thus saving you money!
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 |
Min Ambient Cool | 5F ~ 122F |
Min Ambient Heat | 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 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 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 |
Air Handler 18K BTU
Product Dimensions | 42.52"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 from Cool, Heat or Fan-Only Dry - dehumidify Cool Heat Fan Only Quiet Sleep |
Line Set
Length | 25 Feet |
Liquid Line Size |
1/4" |
Suction Line Size | 1/2" |
Product Brochure
Performance Specifications
Warranty
Energy Guide
AHRI Certificate
For Shipping & return information visit here
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Top Tier Products, Even Better Customer Care

We Believe In Our Products & Our Team