A Moment of Inspiration｜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
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