MRCOOL® DIY® 5th Gen 2-Zone 27,000 BTU Ductless Mini Split Air Conditioner & Heat Pump with Pre-Charged (16ft+16ft) Line Sets R-454B (6K+12K) Air Handlers, (230V)-DIYM227HPW00D00

Product Description 

MRCOOL® DIY® 5th Gen 27,000 BTU 2-Zone Mini Split System – 23 SEER2 – 6K + 12K Air Handlers – DIYM227HPW00D00

Product Overview

The MRCOOL® DIYM227HPW00D00 is a powerful and energy-efficient 27,000 BTU 2-zone ductless mini split system designed for homeowners who want professional-quality heating and cooling without paying expensive HVAC installation costs. Built around the advanced MRCOOL® DIY® 5th Generation Multi-Zone platform, this system combines smart technology, high-efficiency performance, true DIY installation, and room-by-room comfort control into one complete heating and cooling solution.

This bundle pairs the MRCOOL® DIY-MULTI4-27HP230D-O outdoor condenser with one 6,000 BTU wall-mounted air handler and one 12,000 BTU wall-mounted air handler, making it ideal for conditioning smaller and medium-sized spaces independently. The 6K air handler is perfect for bedrooms, offices, nurseries, server rooms, or smaller spaces up to 200 square feet, while the 12K air handler is designed for larger rooms up to 550 square feet such as living rooms, garages, additions, workshops, apartments, and open-concept areas.

Unlike traditional mini split systems that require licensed HVAC technicians, refrigerant charging, vacuum pumps, and specialized tools, the MRCOOL® DIY® system is engineered specifically for homeowners. The included QuickConnect® pre-charged line sets come factory-filled with refrigerant and are ready to install out of the box — eliminating the need for expensive HVAC labor and making installation dramatically easier.

Powered by advanced inverter compressor technology and next-generation R-454B refrigerant, this system delivers exceptional efficiency ratings up to 23 SEER2 while helping reduce monthly utility bills. The inverter system automatically adjusts compressor speed based on demand, improving comfort, lowering energy usage, and reducing system wear over time.

The MRCOOL® DIY® 5th Gen system also includes built-in smart home compatibility through the MRCOOL® SmartHVAC app, Amazon Alexa, and Google Assistant, giving you complete control of your comfort directly from your smartphone or voice assistant.

Whether you’re upgrading older window units, replacing outdated HVAC equipment, or adding heating and cooling to spaces without ductwork, the MRCOOL® DIY® 5th Generation Multi-Zone system delivers reliable year-round comfort with true DIY simplicity.

What’s Included In This Bundle

Outdoor Condenser

• MRCOOL® DIY-MULTI4-27HP230D-O
• 27,000 BTU 5th Gen Multi-Zone Condenser
• 208/230V

Indoor Air Handlers

• MRCOOL® DIY-06-HP-WMAH-230D25-O
  
  
• 6,000 BTU Wall Mounted Air Handler
• Covers up to 200 sq. ft.
• MRCOOL® DIY-12-HP-WMAH-230D25-O
  
  
• 12,000 BTU Wall Mounted Air Handler
• Covers up to 550 sq. ft.

Included Installation Components

• (2) 16 ft QuickConnect® Pre-Charged Line Sets
• DIYPRO® communication cable
• Wireless remote controls
• Installation accessories and mounting hardware

Smartphone not included

Why Homeowners Choose MRCOOL® DIY®

True DIY Installation

Install it yourself and avoid expensive professional HVAC labor. No vacuum pump, refrigerant gauges, or refrigerant handling required.

Independent Room Comfort

Each room gets its own air handler and separate temperature control for personalized comfort and better efficiency.

High-Efficiency Heating & Cooling

With up to 23 SEER2 efficiency and inverter-driven technology, this system helps lower utility bills while maintaining stable indoor temperatures.

Reliable Cold Weather Heating

Designed for year-round comfort with low ambient heating operation down to -13°F outdoor temperatures and strong heating performance around 5°F.

Smart Home Compatible

Built-in smart control works with:

• MRCOOL® SmartHVAC App
• Amazon Alexa
• Google Assistant

Eco-Friendly R-454B Refrigerant

Uses next-generation refrigerant with lower global warming potential and compliance with new HVAC environmental standards.

Quiet Indoor Operation

Wall-mounted air handlers operate quietly, making them perfect for bedrooms, offices, and living spaces.

System Specifications

System Overview

• Model Number: DIYM227HPW00D00
• System Type: Ductless Mini Split Heat Pump
• Zones: 2
• Total Cooling Capacity: 18,000 BTU
• Zone Configuration: 6K + 12K
• Total Coverage Area: Up to 750 sq. ft.
• Refrigerant Type: R-454B
• Installation Type: DIY QuickConnect®
• Voltage: 208/230V Single Phase

Outdoor Condenser Specifications

MRCOOL® DIY-MULTI4-27HP230D-O

• Cooling Capacity: 26,000 BTU
• Heating Capacity: 26,000 BTU
• Cooling Efficiency: 23 SEER2
• EER2: 12.0
• Heating Efficiency: 9.5 HSPF2-4
• HSPF2-5: 7.0
• Outdoor Sound Level: 61 dB(A)
• Cooling Operating Range: -13°F to 122°F
• Heating Operating Range: -13°F to 75°F
• Minimum Circuit Ampacity: 23A
• Maximum Breaker Size: 25A
• Dimensions: 37.24” W x 16.14” D x 31.89” H
• Weight: 140.2 lbs

Certifications

• ENERGY STAR® Certified
• AHRI Certified
• UL Listed
• ETL Listed

Indoor Air Handler Specifications

MRCOOL® DIY-06-HP-WMAH-230D25-O

• Cooling Capacity: 6,000 BTU
• Heating Capacity: 6,000 BTU
• Coverage Area: 100–200 sq. ft.
• Mount Type: Wall Mounted
• Liquid Line Size: 1/4”
• Suction Line Size: 3/8”
• Dimensions: 31.57” W x 7.44” D x 11.69” H
• Weight: 24.47 lbs

Operating Modes

• Auto Mode
• Cooling Mode
• Heating Mode
• Fan-Only Mode
• Dry/Dehumidification Mode
• Sleep Mode

MRCOOL® DIY-12-HP-WMAH-230D25-O

• Cooling Capacity: 12,000 BTU
• Heating Capacity: 12,000 BTU
• Coverage Area: 351–550 sq. ft.
• Mount Type: Wall Mounted
• Liquid Line Size: 1/4”
• Suction Line Size: 3/8”
• Dimensions: 31.57” W x 7.44” D x 11.69” H
• Weight: 24.47 lbs

Operating Modes

• Auto Mode
• Cooling Mode
• Heating Mode
• Fan-Only Mode
• Dry/Dehumidification Mode
• Sleep Mode

Frequently Asked Questions on the MRCOOL® DIY® 5th Gen 27,000 BTU 2-Zone Mini Split System – 23 SEER2 – 6K + 12K Air Handlers – DIYM227HPW00D00

What’s new with the MRCOOL® DIY® 5th Generation systems?

The 5th Gen MRCOOL® DIY® systems include:

• Eco-friendly R-454B refrigerant
• Improved SEER2 efficiency ratings
• Enhanced cold weather heating performance
• Upgraded inverter technology
• Improved reliability and system durability

Can I install this system myself?

Yes. MRCOOL® DIY® systems are designed specifically for homeowner installation using QuickConnect® pre-charged line sets that eliminate the need for vacuum pumps and refrigerant charging.

A licensed electrician is recommended for final electrical connections and code compliance.

Does this system provide both heating and cooling?

Yes. This is a heat pump system that provides year-round heating and cooling.

Does it work in cold weather?

Yes. The system is designed for low ambient heating performance and can continue heating in outdoor temperatures down to -13°F.

Is WiFi included?

Yes. The system supports smart control through the MRCOOL® SmartHVAC app and is compatible with Amazon Alexa and Google Assistant. As long as you have WiFi.

What rooms is this system best for?

Perfect applications include:

• Bedrooms
• Home offices
• Garages
• Workshops
• Tiny homes
• Apartments
• Barndominiums
• Older homes without ductwork
• New additions and bonus rooms

Warranty Coverage

The MRCOOL® DIY® 5th Generation system includes:

• 7-Year Compressor Replacement Warranty
• 5-Year Parts Warranty
• Eligible for the care kit program 

Why Buy From MRCOOL Direct?

MRCOOL Direct is one of America’s most trusted authorized MRCOOL dealers, helping homeowners save money with genuine factory-direct HVAC systems and real customer support.

When You Buy From Us, You Get:

• Authorized MRCOOL dealer protection
• Genuine factory-fresh equipment
• Full manufacturer warranty support
• Fast nationwide shipping
• Expert product assistance
• DIY installation support
• Help with sizing and accessories
• No unauthorized third-party marketplace sellers
• Family-owned customer service that actually cares

We proudly help customers across the USA find the right heating and cooling solutions for their homes and businesses.

Need Help Choosing The Right System?

Call our HVAC specialists anytime:

615-553-8118

Friendly support from real people who love talking HVAC.

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