MRCOOL® DIY® 5th Gen 27K 2-Zone Mini Split System (6k + 18k) Air Handlers Multi-Zone, R-454B, Pre-Charged (25ft + 25ft) Line Sets, (230V)-DIYM227HPW01D07

Product Description 

MRCOOL® DIY® 5th Gen 27,000 BTU 2-Zone Mini Split System – 23 SEER2 – 6K + 18K Air Handlers – DIYM227HPW01D07

Product Overview

The MRCOOL® DIYM227HPW01D07 is a powerful and energy-efficient 27,000 BTU 2-zone ductless mini split system designed for homeowners who want professional-quality comfort without the high cost of professional HVAC installation. Built around the advanced MRCOOL® DIY® 5th Generation Multi-Zone platform, this system combines smart heating and cooling, inverter-driven efficiency, true DIY installation, and independent room temperature control into one complete ductless HVAC solution.

This bundle pairs the MRCOOL® DIY-MULTI4-27HP230D-O outdoor condenser with one 6,000 BTU wall-mounted air handler and one 18,000 BTU wall-mounted air handler, making it ideal for conditioning both small and large rooms from a single outdoor unit. The 6K air handler works perfectly for bedrooms, nurseries, offices, guest rooms, or smaller spaces up to 200 square feet, while the larger 18K air handler is built for bigger areas up to 800 square feet such as living rooms, garages, workshops, open-concept spaces, apartments, bonus rooms, finished basements, and master suites.

Unlike traditional mini split systems that require licensed HVAC contractors, vacuum pumps, refrigerant charging, and specialized tools, the MRCOOL® DIY® system is engineered specifically for homeowners. The included 25 ft DIY® QuickConnect® pre-charged line sets come factory-filled with R-454B refrigerant and are ready to connect out of the box. No vacuuming. No gauges. No refrigerant handling required.

This bundle is especially useful for installations where the indoor units are farther from the outdoor condenser, thanks to the included longer 25-foot line sets.

With up to 23 SEER2 cooling efficiency and 9.5 HSPF2-4 heating performance, this system helps reduce energy costs while delivering quiet, reliable year-round comfort. The DC inverter compressor automatically adjusts output based on demand, helping maintain more stable indoor temperatures with less energy usage compared to traditional HVAC systems, window units, or electric baseboard heat.

The MRCOOL® DIY® 5th Generation system also features built-in smart control compatibility through the MRCOOL® SmartHVAC app, Amazon Alexa, and Google Assistant, allowing you to adjust temperatures, modes, and schedules directly from your smartphone or by voice command.

This condenser supports up to 4 indoor zones total, but this bundle currently uses only 2 zones, leaving room for future expansion if additional indoor units are needed later.

If you want high-efficiency ductless heating and cooling with DIY installation and flexible room coverage, the MRCOOL® DIYM227HPW01D07 is one of the best multi-zone mini split systems available today.

What’s Included In This Bundle

Outdoor Condenser

• MRCOOL® DIY-MULTI4-27HP230D-O
• 27,000 BTU class DIY® 5th Gen Multi-Zone Condenser
• Supports up to 4 indoor zones
• 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-18-HP-WMAH-230D25-O
  
  
• 18,000 BTU Wall Mounted Air Handler
• Covers up to 800 sq. ft.

Included Installation Components

• (2) 25 ft DIY® QuickConnect® Pre-Charged Line Sets
• DIYPRO® communication cable
• Wireless remotes
• SmartHVAC WiFi/app capability
• Mounting hardware
• Installation manuals

Smartphone not included

Ideal Room Applications

This MRCOOL® DIY® 27K 2-zone system is ideal for homeowners who need independent comfort control in two different-sized spaces.

Perfect for:

• Bedrooms + living rooms
• Office + garage
• Nursery + master bedroom
• Workshop + apartment
• Finished basement + upstairs room
• Bonus room over garage
• Tiny homes and ADUs
• Airbnb and rental properties
• Older homes without ductwork
• Home additions and remodels

Why Homeowners Choose MRCOOL® DIY®

True DIY® Installation

The MRCOOL® DIY® system is specifically designed for homeowner installation using pre-charged QuickConnect® line sets. No vacuum pump, refrigerant gauges, or refrigerant charging required.

Independent Room Temperature Control

Each room gets its own dedicated air handler and individual temperature settings for personalized comfort and improved energy efficiency.

Expandable Multi-Zone Platform

The condenser supports up to 4 indoor zones total, allowing future expansion if additional rooms need heating and cooling later.

High-Efficiency Heating & Cooling

With inverter-driven technology and up to 23 SEER2 efficiency, this system helps lower monthly energy bills while maintaining consistent indoor comfort.

Excellent Cold Weather Performance

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

Smart Home Ready

Compatible with:

• MRCOOL® SmartHVAC App
• Amazon Alexa
• Google Assistant
• Included wireless remotes

Eco-Friendly R-454B Refrigerant

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

Quiet Indoor Operation

Indoor air handlers operate quietly, making them ideal for bedrooms, offices, living rooms, and rental properties.

System Specifications

System Overview

• Model Number: DIYM227HPW01D07
• System Type: Ductless Mini Split Heat Pump
• Zones Included: 2
• Zones Supported By Condenser: Up to 4
• Total Indoor Capacity: 24,000 BTU
• Outdoor Condenser Class: 27,000 BTU
• Zone Configuration: 6K + 18K
• Estimated Total Coverage: Up to 1,000 sq. ft.
• Zone 1 Coverage: Up to 200 sq. ft.
• Zone 2 Coverage: Up to 800 sq. ft.
• Refrigerant: R-454B
• Included Line Sets: (2) 25 ft QuickConnect® Line Sets
• Voltage: 208/230V
• Phase: 1
• Cycle: 60Hz

Outdoor Condenser Specifications

MRCOOL® DIY-MULTI4-27HP230D-O

• Cooling Capacity: 26,000 BTU
• Heating Capacity: 26,000 BTU
• SEER2: 23
• EER2: 12
• HSPF2-4: 9.5
• HSPF2-5: 7
• Tonnage: 2.25 Ton
• Compressor Type: DC Inverter Rotary
• 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 Fuse Breaker: 25A
• Maximum Total Line Length: 221.4 ft
• Liquid Line Size: 1/4”
• Suction Line Size: 3/8”
• Net Dimensions: 37.24” W x 31.89” H x 16.14” D
• Net Weight: 140.21 lbs

Indoor Air Handler Specifications

MRCOOL® DIY-06-HP-WMAH-230D25-0

• Cooling Capacity: 6,000 BTU
• Heating Capacity: 6,000 BTU
• Coverage Area: Up to 200 sq. ft.
• Mount Type: Wall Mount
• Voltage: 208/230V
• Filter: Reusable
• Liquid Line Size: 1/4"
• Suction Line Size: 3/8"
• Net Dimensions: 31.57" W x 11.69" H x
  7.44" D
• Net Weight: 24.47 Ibs

Operating Modes

• Cool
• Heat
• Auto
• Dry / Dehumidification
• Fan
• Sleep

MRCOOL® DIY-18-HP-WMAH-230D25-O

• Cooling Capacity: 18,000 BTU
• Heating Capacity: 18,000 BTU
• Coverage Area: Up to 800 sq. ft.
• Mount Type: Wall Mount
• Voltage: 208/230V
• Indoor Sound Range: 19–54.5 dB(A)
• Liquid Line Size: 1/4”
• Suction Line Size: 1/2”
• Net Dimensions: 42.52” W x 13.19” H x 8.9” D
• Net Weight: 35.49 lbs

Operating Modes

• Cool
• Heat
• Auto
• Dry / Dehumidification
• Fan
• Sleep

Frequently Asked Questions about the MRCOOL® DIY® 5th Gen 27,000 BTU 2-Zone Mini Split System – 23 SEER2 – 6K + 18K Air Handlers – DIYM227HPW01D07

Can I install this system myself?

Yes. MRCOOL® DIY® systems are designed specifically for homeowner installation using pre-charged QuickConnect® line sets. No vacuum pump, refrigerant gauges, or refrigerant charging required.

A licensed electrician should complete the electrical hookup to meet local code requirements.

How many rooms can this system handle?

This bundle is configured for 2 rooms, but the outdoor condenser supports up to 4 indoor units total for future expansion.

What room sizes is this system best for?

The 6K air handler is ideal for rooms up to 200 sq. ft., while the 18K air handler is ideal for spaces up to 800 sq. ft.

Room sizing can vary depending on insulation, ceiling height, climate, windows, and room layout.

Are the line sets really pre-charged?

Yes. Both included 25 ft DIY® QuickConnect® line sets arrive factory pre-charged with R-454B refrigerant.

Is this system energy efficient?

Yes. With up to 23 SEER2 and inverter compressor technology, this system is significantly more efficient than many traditional HVAC systems, window units, and electric heating solutions.

Can I control the system from my phone?

Yes. The MRCOOL® SmartHVAC app allows full smartphone control and works with Amazon Alexa and Google Assistant. As long as you have WiFi.

Warranty Coverage

This MRCOOL® DIY® 5th Generation system includes:

• 7-Year Compressor 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, specializing exclusively in MRCOOL systems and accessories.

When you buy from MRCOOL Direct, you get:

• Genuine factory-fresh MRCOOL® equipment
• Warranty-safe authorized dealer protection
• Expert sizing assistance
• Line set and accessory guidance
• Nationwide shipping
• Friendly support before and after the sale
• Real help from real HVAC people
• No unauthorized third-party marketplace sellers

Need help confirming room sizes, breaker sizing, or line set lengths before ordering?

Call MRCOOL Direct:

615-553-8118

BUY DIRECT AND SAVE!  At MRCOOL DIRECT