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36,000 BTU MRCOOL DIY 5th Gen 23 SEER2 Dual Zone Wall Mount Mini Split Heat Pump System – R454B | 230V – 12 + 12

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MRCOOL

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Model

DIY-MULTI5-36HP / DIY-12-HP-WMAH-230-2

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206754

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Customize 36,000 BTU MRCOOL DIY 5th Gen 23 SEER2 Dual Zone Wall Mount Mini Split Heat Pump System – R454B | 230V – 12 + 12
36,000 BTU MRCOOL 5 Zone Condenser - R454B
36,000 BTU MRCOOL 5 Zone Condenser - R454B
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12,000 BTU MRCOOL DIY 5th Generation Wall Mount Air Handler – R454B
12,000 BTU MRCOOL DIY 5th Generation Wall Mount Air Handler – R454B
12,000 BTU MRCOOL DIY 5th Generation Wall Mount Air Handler – R454B   + $689.00
12,000 BTU MRCOOL DIY 5th Generation Wall Mount Air Handler – R454B
12,000 BTU MRCOOL DIY 5th Generation Wall Mount Air Handler – R454B
12,000 BTU MRCOOL DIY 5th Generation Wall Mount Air Handler – R454B   + $689.00
16ft 1/4 x 3/8 Line Set for DIY 6K, 9K & 12K Indoor - R454B
16ft 1/4 x 3/8 Line Set for DIY 6K, 9K & 12K Indoor - R454B
36,000 BTU MRCOOL DIY 5th Gen 23 SEER2 Dual Zone Wall Mount Mini Split Heat Pump System – R454B | 230V –  12 + 12 - DIY-MULTI5-36HP / DIY-12-HP-WMAH-230-2

$3,921.00

MRCOOL DIY 5th Gen 36,000 BTU Dual Zone Ductless Heat Pump Split System (12,000 + 12,000 BTU)

The MRCOOL DIY 5th Gen 36,000 BTU Dual Zone Ductless Heat Pump Split System is the perfect solution for maintaining comfortable temperatures in two large rooms. With two 12,000 BTU wall-mounted indoor units, this system is ideal for living rooms, master bedrooms, open floor plans, or home offices. Featuring smart home compatibility, whisper-quiet operation, and true DIY installation, it brings powerful, efficient comfort to your home without the need for professional tools or technicians.

System Features

  • Dual Large-Zone Coverage: Two 12,000 BTU units provide robust climate control for expansive spaces.
  • 36,000 BTU Outdoor Condenser: Inverter-driven performance supports both zones efficiently and quietly.
  • Smart Control: Integrates with the MRCOOL SmartHVAC app, Amazon Alexa, and Google Assistant for mobile and voice control.
  • High Efficiency: SEER2-rated operation with a variable-speed compressor reduces energy usage while keeping your home comfortable.
  • Quiet Operation: Low indoor and outdoor noise levels make it suitable for bedrooms, living spaces, and quiet zones.
  • All-Weather Reliability: Outdoor unit features Gold Fin anti-corrosion protection for long-lasting performance in challenging environments.
  • Leak Detection System: Built-in technology alerts you to refrigerant issues to help protect system performance and lifespan.

Reliable Year-Round Comfort

This system provides dependable cooling down to 5 F and heating in outdoor temperatures as low as -13 F. Independent control over each zone ensures personalized comfort and energy savings for every area of your home.

Whats Included

  • One 36,000 BTU Outdoor Condenser
  • Two 12,000 BTU Wall-Mounted Indoor Units
  • Two Wireless Remote Controls
  • Smart Controller Module
  • Complete Installation Kit and User Manuals

Why Choose the MRCOOL 5th Gen 12K + 12K Dual Zone System?

The MRCOOL DIY 5th Gen Dual Zone System with two 12,000 BTU indoor units is an excellent choice for large, high-demand spaces. It offers powerful performance, smart functionality, and the convenience of a do-it-yourself installation”perfect for homeowners who want total comfort control without hiring a professional. These bundles require the purchase of a Pre-Charged Line Set, these are not included.

36,000 BTU MRCOOL DIY 5th Generation 5 Zone Multi-Zone Mini Split Condenser - R454B | 230V

MRCOOL 36k DIY 5th Generation 5 Zone Multi-Zone Mini-Split Condenser 230v

The MRCOOL® DIY-MULTI5-36HP230D-O is a powerful and flexible 5th Generation Multi-Zone Mini-Split Condenser designed for up to five zones of customized climate control. Ideal for homeowners seeking an energy-efficient, easy-to-install system, this 36,000 BTU unit supports MRCOOL® DIY® Quick Connect® air handlers and features industry-leading convenience and performance.

Key Features

  • 5-Zone Capacity: Supports up to five indoor units with varied BTU ratings for personalized room-by-room temperature control.
  • Smart Technology: Works with the SmartHVAC app, Amazon Alexa, and Google Assistant for remote monitoring and control.
  • Energy Efficiency: High SEER2 and HSPF2 ratings provide year-round comfort while reducing utility costs.
  • Durable Design: Features a corrosion-resistant Gold Fin coating for long-term outdoor reliability.

Performance Specifications

  • Model: DIY-MULTI5-36HP230D-O
  • Power Supply: 208/230V, 60Hz, 1Ph
  • Cooling Capacity: 36,000 BTU
  • Heating Capacity: 36,000 BTU
  • SEER2: Up to 20.5
  • HSPF2: Up to 8.5

Additional Features

  • Low Ambient Cooling: Operates in temperatures as low as 5°F for cooling and -13°F for heating
  • Quiet Operation: Low noise output for minimal disturbance indoors and outdoors
  • Auto Restart: Automatically resumes settings after a power outage
  • Multiple Fan Speeds: Adjustable airflow settings for increased comfort

The MRCOOL 36k DIY 5th Generation Multi-Zone Condenser is the ideal solution for homeowners who want full control, top-tier performance, and hassle-free installation. With smart features and powerful climate management across five zones, it delivers dependable comfort all year long.

12,000 BTU MRCOOL DIY 5th Generation Single Zone Wall Mount Mini Split Air Handler - R454B | 230V

MRCOOL® 12k DIY 5th Generation Mini-Split Air Handler 230v

The MRCOOL® 12k DIY 5th Generation Mini-Split Air Handler is an efficient, user-friendly solution for heating and cooling medium-sized spaces. With a capacity of 12,000 BTU and a 230-volt configuration, this air handler is part of the innovative MRCOOL® DIY series, designed for fast installation without specialized HVAC tools or training. Ideal for homeowners looking to upgrade their comfort without added labor costs, it combines smart technology with dependable performance.

Key Features:

  • DIY-Friendly Installation
  • Efficient Performance: High SEER2 efficiency helps reduce energy bills while maintaining reliable comfort all year long.
  • Smart Controls: Compatible with the MRCOOL® SmartHVAC app, as well as Alexa and Google Assistant, for remote operation and scheduling.
  • Low Noise Operation: Engineered for quiet performance, making it perfect for bedrooms, offices, and other quiet zones.
  • Versatile Functionality: Supports cooling, heating, fan-only, and dehumidification modes to suit any seasonal need.
  • Auto Restart and Sleep Mode: Automatically resumes with previous settings after power outages and adjusts temperatures overnight for energy savings.
  • Wall-Mounted Design: Sleek and compact unit fits easily into most interior layouts without taking up valuable floor space.

Specifications:

  • Model Number: DIY-12-HP-WMAH-230D25-O
  • Voltage: 230V
  • Cooling/Heating Capacity: 12,000 BTU
  • Refrigerant: R-454B
  • Mounting Style: Wall-mounted

The MRCOOL® 12k DIY Air Handler delivers the performance and features you need to efficiently control your home’s climate without the complexity of traditional HVAC systems. Ideal for bedrooms, living rooms, and other medium-sized spaces, this unit blends technology, convenience, and cost-saving efficiency into one smart package.

16ft 1/4 x 1/2 Line Set for DIY 9K, 12K & 18K Indoor - R454B

DIY16-1412-O 16ft 1/4 x 1/2 Lineset for DIY 9K, 12K & 18K Indoor - R454B

The MRCOOL DIY16-1412-O is a 16-foot pre-charged lineset designed for MRCOOL® DIY 9K, 12K, and 18K indoor units using R-454B refrigerant. This lineset offers an easy-to-install, reliable solution that eliminates the need for vacuum pumps or refrigerant charging.

Featuring Quick Connect fittings, it allows for quick, tool-free connections between indoor and outdoor units. The durable insulation and corrosion-resistant copper tubing provide excellent thermal performance and long-lasting durability.

Key Features:

  • Length: 16 feet of pre-charged copper tubing
  • Line Sizes: 1/4 inch liquid line and 1/2 inch suction line
  • Refrigerant: Pre-charged with eco-friendly R-454B refrigerant
  • Compatibility: Compatible with MRCOOL DIY 9K, 12K, and 18K indoor units
  • Connection Type: Quick Connect fittings for tool-free installation
  • Insulation: High-quality insulation to prevent condensation and improve energy efficiency
  • Durability: Built with corrosion-resistant materials for extended service life

This lineset is an ideal choice for extending or replacing refrigerant lines in MRCOOL® DIY mini-split systems, providing an efficient and hassle-free installation.

25ft 1/4 x 1/2 Line Set for DIY 9K, 12K & 18K Indoor - R454B

DIY25-1412-O 25ft 1/4 x 1/2 Lineset for DIY 9K, 12K & 18K Indoor - R454B

The MRCOOL® DIY25-1412-O is a 25-foot pre-charged lineset designed for MRCOOL DIY 9K, 12K, and 18K indoor units using R-454B refrigerant. This lineset offers a convenient and reliable solution that eliminates the need for vacuum pumps or refrigerant charging during installation.

Featuring Quick Connect fittings, it enables quick, tool-free connections between indoor and outdoor units. The durable insulation and corrosion-resistant copper tubing ensure optimal thermal efficiency and long-lasting performance.

Key Features:

  • Length: 25 feet of pre-charged copper tubing
  • Line Sizes: 1/4 inch liquid line and 1/2 inch suction line
  • Refrigerant: Pre-charged with eco-friendly R-454B refrigerant
  • Compatibility: Compatible with MRCOOL DIY 9K, 12K, and 18K indoor units
  • Connection Type: Quick Connect fittings for easy installation
  • Insulation: High-quality insulation to prevent condensation and improve energy efficiency
  • Durability: Built with corrosion-resistant materials for extended lifespan

This lineset is an excellent choice for extending or replacing refrigerant lines in MRCOOL® DIY mini-split systems, providing hassle-free installation and dependable operation.

16ft 1/4 x 3/8 Line Set for DIY 6K, 9K & 12K Indoor - R454B

DIY16-1438-O 16ft 1/4 x 3/8 Lineset for DIY 6K, 9K & 12K Indoor - R454B

The MRCOOL DIY16-1438-O is a pre-charged 16-foot line set designed specifically for MRCOOL DIY 6K, 9K, and 12K indoor units using R-454B refrigerant. It is engineered to simplify installation for homeowners and HVAC professionals alike, while maintaining efficiency and refrigerant integrity without the need for vacuuming or charging.

This lineset offers a flexible, durable, and easy-to-connect solution that supports the revolutionary MRCOOL DIY ductless mini-split systems. The Quick Connect® fittings provide a secure and tight seal, ensuring a hassle-free installation and long-term reliability.

Key Features:

  • Length: 16 feet of pre-charged copper tubing
  • Line Sizes: 1/4 inch liquid line and 3/8 inch suction line
  • Refrigerant: Pre-charged with environmentally friendly R-454B
  • Compatibility: Designed for use with MRCOOL DIY 6K, 9K, and 12K indoor units
  • Connection Type: Quick Connect fittings for fast, tool-free installation
  • Insulation: High-quality insulation for efficient thermal performance and reduced energy loss
  • Corrosion Resistance: Durable construction resists environmental wear and corrosion

This lineset is ideal for both first-time installations and replacements, ensuring optimal performance and easy integration with compatible MRCOOL® systems. With a 100% DIY approach, this component allows users to complete professional-level installations without special tools or equipment.

25ft 1/4 x 3/8 Line Set for DIY 6K, 9K & 12K Indoor - R454B 

DIY25-1438-O 25ft 1/4 x 3/8 Lineset for DIY 6K, 9K & 12K Indoor - R454B

The MRCOOL DIY25-1438-O is a 25-foot pre-charged line set engineered for easy installation with MRCOOL DIY 6K, 9K, and 12K indoor units that utilize R-454B refrigerant. This lineset offers an efficient, mess-free solution for both homeowners and professionals who want a clean and secure HVAC connection without the need for vacuum pumps or refrigerant handling.

Equipped with Quick Connect fittings, this lineset simplifies the installation process by providing a tight, reliable seal—eliminating the need for special tools. The pre-charged refrigerant lines and durable insulation deliver excellent performance and energy efficiency in a wide range of settings.

Key Features:

  • Length: 25 feet of pre-charged copper tubing
  • Line Sizes: 1/4 inch liquid line and 3/8 inch suction line
  • Refrigerant: Pre-charged with eco-friendly R-454B refrigerant
  • Compatibility: Works with MRCOOL DIY 6K, 9K, and 12K indoor units
  • Connection Type: Quick Connect fittings for tool-free installation
  • Insulation: High-quality insulation for optimized thermal performance and protection
  • Construction: Built with corrosion-resistant materials for long-term durability

Perfect for extending the installation distance or replacing an existing lineset, the DIY25-1438-O provides a flexible and user-friendly option for MRCOOL® mini-split systems. Its DIY design ensures users can achieve a professional-grade setup with minimal effort and maximum confidence.

35ft 1/4 x 3/8 Line Set for DIY 6K, 9K & 12K Indoor w/ DIY Pro Cable - R454B

DIY35-1438C-O 35ft 1/4 x 3/8 Lineset for DIY 6K, 9K & 12K Indoor with DIY Pro Cable - R454B

The MRCOOL® DIY35-1438C-O is a 35-foot pre-charged lineset with an integrated DIY Pro Cable, engineered for compatibility with MRCOOL DIY 6K, 9K, and 12K indoor units using R-454B refrigerant. This advanced installation component simplifies setup while delivering excellent durability, refrigerant integrity, and safety.

Equipped with patented Quick Connect fittings, this lineset allows for a hassle-free, tool-free connection between indoor and outdoor units. The added DIY Pro Cable enhances reliability and safety during installation, offering pre-attached wiring in a single bundled solution. It's the ideal choice for extended installations requiring both performance and convenience.

Key Features:

  • Length: 35 feet of pre-charged copper tubing
  • Line Sizes: 1/4 inch liquid line and 3/8 inch suction line
  • Refrigerant: Pre-charged with R-454B refrigerant for environmentally responsible performance
  • Compatibility: Designed for MRCOOL DIY 6K, 9K, and 12K indoor units
  • Connection Type: Quick Connect fittings for easy and secure installation
  • Pro Cable: Integrated DIY Pro Cable for simplified wiring and increased safety
  • Insulation: High-quality insulation ensures efficiency and protection from condensation
  • Durability: Built with corrosion-resistant materials for long-term use

The DIY35-1438C-O is the perfect solution for users seeking an extended lineset with built-in power and communication cabling. Its all-in-one design streamlines setup and supports reliable performance in MRCOOL® DIY mini-split systems.

50ft 1/4 x 3/8 Line Set for DIY 6K, 9K & 12K Indoor w/ DIY Pro Cable - R454B   

DIY50-1438C-O 50ft 1/4 x 3/8 Lineset for DIY 6K, 9K & 12K Indoor with DIY Pro Cable - R454B

The MRCOOL® DIY50-1438C-O is a 50-foot pre-charged lineset with an integrated DIY Pro Cable, designed for use with MRCOOL DIY 6K, 9K, and 12K indoor units using R-454B refrigerant. This extended-length lineset offers a convenient, all-in-one solution for efficient and reliable HVAC installations.

Featuring patented Quick Connect fittings, this lineset enables a quick and secure connection between indoor and outdoor units without specialized tools. The integrated DIY Pro Cable streamlines wiring and enhances installation safety, making it ideal for professional-quality DIY projects.

Key Features:

  • Length: 50 feet of pre-charged copper tubing
  • Line Sizes: 1/4 inch liquid line and 3/8 inch suction line
  • Refrigerant: Pre-charged with eco-friendly R-454B refrigerant
  • Compatibility: Suitable for MRCOOL DIY 6K, 9K, and 12K indoor units
  • Connection Type: Quick Connect fittings for easy, tool-free installation
  • Pro Cable: Integrated DIY Pro Cable for simplified wiring and enhanced safety
  • Insulation: High-quality insulation to improve energy efficiency and prevent condensation
  • Durability: Constructed with corrosion-resistant materials for lasting performance

This 50-foot lineset with integrated Pro Cable is perfect for installations requiring longer reach and professional-grade convenience. It ensures reliable operation and an efficient setup for MRCOOL® DIY mini-split systems.

More Information
36,000 BTU MRCOOL DIY 5th Generation 5 Zone Multi-Zone Mini Split Condenser - R410A | 230V
SKUDIY-MULTI5-36HP230D-O
Weight (in lbs)169.240000
Brand/ManufacturerMRCOOL
HSPF29.9
Cooling BTU34,000
Heating BTU36,000
Decibel Level (dBA)64
RefrigerantR454B
SEER2 (Efficiency)23
Compressor TypeRotary
Liquid Line1/4
Liquid Valve Size 1/4
Suction Valve Size 3/8
Electrical208/230
Max Breaker Size35
Min. Breaker Size30.5
BTU/Tonnage36,000 BTU/3 Ton
Zone CompatibilityMulti Zone
Height31.89
Width37.24
Depth16.14
Warranty7 Year Compressor/5 Year Parts Warranty
Resources You will need Adobe Acrobat Reader to view PDF documents.
Safety InformationPROPOSITION 65 WARNING
12,000 BTU MRCOOL DIY 5th Generation Single Zone Wall Mount Mini Split Air Handler - R454B | 230V
SKUDIY-12-HP-WMAH-230D25-O
Weight (in lbs)24.470000
Brand/ManufacturerMRCOOL
ReplacesDIY-12-HP-WMAH-230C25
RefrigerantR454B
Liquid Valve Size 1/4
Suction Valve Size 3/8
BTU/Tonnage12,000 BTU/1 Ton
Mini Split TypeWall Mounted
Zone CompatibilityMulti Zone
Height11.63
Width31.57
Depth7.44
Warranty7 Year Compressor/5 Year Parts Warranty
Resources You will need Adobe® Acrobat® Reader to view PDF documents.
Safety InformationPROPOSITION 65 WARNING
16ft 1/4 x 1/2 Line Set for DIY 9K, 12K & 18K Indoor - R454B
SKUDIY16-1412-O
Weight (in lbs)8.800000
Brand/ManufacturerMRCOOL
RefrigerantR454B
Liquid Valve Size 1/4
Suction Valve Size 1/2
Indoor Units15 + 15 + 18
Safety InformationPROPOSITION-65-WARNING This-product-and-many-products-on-our-site-may-contain-a-chemical-know-to-the-state-of-California-to-cause-cancer-or-birth-defects-or-other-reproductive-harm.-For-more-information-about-Proposition-65-please-Click-Here.
25ft 1/4 x 1/2 Line Set for DIY 9K, 12K & 18K Indoor - R454B
SKUDIY25-1412-O
Weight (in lbs)12.100000
Brand/ManufacturerMRCOOL
RefrigerantR454B
Liquid Valve Size 1/4
Suction Valve Size 1/2
Indoor Units15 + 15 + 18
Safety InformationPROPOSITION-65-WARNING This-product-and-many-products-on-our-site-may-contain-a-chemical-know-to-the-state-of-California-to-cause-cancer-or-birth-defects-or-other-reproductive-harm.-For-more-information-about-Proposition-65-please-Click-Here.
16ft 1/4 x 3/8 Line Set for DIY 6K, 9K & 12K Indoor - R454B
SKUDIY16-1438-O
Weight (in lbs)7.900000
Brand/ManufacturerMRCOOL
RefrigerantR454B
Liquid Valve Size 1/4
Suction Valve Size 3/8
Indoor Units15 + 15 + 18
Safety InformationPROPOSITION-65-WARNING This-product-and-many-products-on-our-site-may-contain-a-chemical-know-to-the-state-of-California-to-cause-cancer-or-birth-defects-or-other-reproductive-harm.-For-more-information-about-Proposition-65-please-Click-Here.
25ft 1/4 x 3/8 Line Set for DIY 6K, 9K & 12K Indoor - R454B 
SKUDIY25-1438-O
Weight (in lbs)10.400000
Brand/ManufacturerMRCOOL
RefrigerantR454B
Liquid Valve Size 1/4
Suction Valve Size 3/8
Indoor Units15 + 15 + 18
Safety InformationPROPOSITION-65-WARNING This-product-and-many-products-on-our-site-may-contain-a-chemical-know-to-the-state-of-California-to-cause-cancer-or-birth-defects-or-other-reproductive-harm.-For-more-information-about-Proposition-65-please-Click-Here.
35ft 1/4 x 3/8 Line Set for DIY 6K, 9K & 12K Indoor w/ DIY Pro Cable - R454B
SKUDIY35-1438C-O
Weight (in lbs)17.600000
Brand/ManufacturerMRCOOL
RefrigerantR454B
Liquid Valve Size 1/4
Suction Valve Size 3/8
Indoor Units15 + 15 + 18
Safety InformationPROPOSITION-65-WARNING This-product-and-many-products-on-our-site-may-contain-a-chemical-know-to-the-state-of-California-to-cause-cancer-or-birth-defects-or-other-reproductive-harm.-For-more-information-about-Proposition-65-please-Click-Here.
50ft 1/4 x 3/8 Line Set for DIY 6K, 9K & 12K Indoor w/ DIY Pro Cable - R454B   
SKUDIY50-1438C-O
Weight (in lbs)24.000000
Brand/ManufacturerMRCOOL
RefrigerantR454B
Liquid Valve Size 1/4
Suction Valve Size 3/8
Indoor Units15 + 15 + 18
Safety InformationPROPOSITION-65-WARNING This-product-and-many-products-on-our-site-may-contain-a-chemical-know-to-the-state-of-California-to-cause-cancer-or-birth-defects-or-other-reproductive-harm.-For-more-information-about-Proposition-65-please-Click-Here.
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MRCOOL mini split systems combine innovative design with advanced manufacturing to deliver efficient, reliable comfort wherever you need it. Built with cutting-edge technology, these systems ensure optimal performance and flexibility for any space.