MRCOOL DIY 5th Gen 27,000 BTU 4‑Zone Ductless Mini Split Heat Pump System (Two 6K + Two 12K Air Handlers with 16 ft & 35 ft QuickConnect Line Sets)

MRCOOL DIY 5th Gen 27,000 BTU 4‑Zone Ductless Mini Split Heat Pump System (Two 6K + Two 12K Air Handlers with 16 ft & 35 ft QuickConnect Line Sets)

The MRCOOL DIY 5th Gen 27,000 BTU 4‑Zone Ductless Mini Split Heat Pump System (DIYM327HPW02D07) is an efficient and customizable climate control solution engineered for homeowners who want multiple comfort zones throughout their home or workspace without the need for professional installation. This multi‑zone system features four indoor wall‑mounted air handlers — two rated at 6,000 BTU and two at 12,000 BTU — paired with a 27,000 BTU outdoor condenser, offering individualized heating and cooling for different living areas.

Designed for true DIY setup, the system includes pre‑charged QuickConnect® line sets that eliminate the need for vacuum pumps or professional HVAC tools, simplifying the installation process. The combination of 16 ft and 35 ft line sets provides flexibility in positioning indoor units relative to the outdoor condenser, accommodating a wide range of room layouts and distances. A DIYPRO® communication cable further streamlines electrical connections for a faster, smoother setup experience.

Advanced DC inverter technology enables consistent temperature control, whisper‑quiet operation, and improved energy efficiency compared with traditional HVAC systems. Each indoor unit comes with its own wireless remote control, allowing you to set precise temperatures in each zone independently. Smart control capability adds convenience with app integration and support for modern voice assistant systems.

Built with durable components, including corrosion‑resistant outdoor construction, this system is designed to perform reliably for years. With manufacturer warranties backing both parts and compressors, the MRCOOL DIY® 27 K multi‑zone system delivers powerful performance, flexibility, and convenience for year‑round comfort.

Features

• Multi‑Zone Comfort: Four independently controlled zones for personalized temperature settings

• Indoor Units Included: Two 6,000 BTU and two 12,000 BTU wall‑mounted air handlers

• DIY‑Friendly Installation: Pre‑charged QuickConnect® line sets eliminate the need for HVAC tools or vacuum pumps

• Flexible Line Set Lengths: Includes two 16 ft and two 35 ft pre‑charged QuickConnect® line sets

• Uses R‑454B refrigerant for improved environmental efficiency

• Quiet, Efficient Operation: DC inverter technology for smooth performance

• Individual Wireless Remote Controls for each indoor unit

• Smart Climate Control Capable: Designed for remote app use and voice assistant integration

• Corrosion‑Resistant Outdoor Unit Construction for long‑term durability

• Ideal for residential or light commercial multi‑room environments

Specifications

• Voltage: 208/230V, Single Phase
• Zones Supported: Up to 4
• Condenser Max Fuse / Breaker: 35 Amps
• Condenser Minimum Circuit Ampacity: 30.5 Amps
• Refrigerant: R-454B (Eco-friendly)
• Installation Type: True DIY® (No HVAC license required)

What’s Included

✔ MRCOOL® DIY® Multi-Zone Condenser

 • Model: DIY-MULTI4-27HP230D-O

 • 27,000 BTU | 4-Zone Capacity | 230V

 • Max Breaker: 35A | Min Circuit Ampacity: 30.5A

✔ (2) MRCOOL® DIY® 6K BTU Wall-Mounted Air Handlers

 • Model: DIY-06-HP-WMAH-230D25-O

 • Up to 200 sq. ft. per zone

✔ (1) MRCOOL® DIY® 12K BTU Wall-Mounted Air Handler

 • Model: DIY-12-HP-WMAH-230D25-O

 • Up to 550 sq. ft.

✔ (1) MRCOOL® DIY® 16 ft QuickConnect® Line Set

 • Model: DIY16-1438-O

✔ (1) MRCOOL® DIY® 25 ft QuickConnect® Line Set

 • Model: DIY25-1438-O

✔ (1) MRCOOL® DIY® 35 ft QuickConnect® Line Set w/ DIYPRO® Cable

 • Model: DIY35-1438C-O

✔ Pre-charged R-454B refrigerant

✔ DIYPRO® cable (where applicable)

✔ Wireless remotes for each air handler

📱 Smart phone not included

Frequently Asked Questions (FAQ's)

Can I install this system myself?

Yes. MRCOOL® DIY® systems are specifically designed for homeowners using QuickConnect® line sets.

Do I need a vacuum pump or gauges?

No. The system is factory-sealed and pre-charged.

Can each room be controlled separately?

Yes. Every air handler operates independently.

Does this system support smart controls?

Yes. Works with the MRCOOL® Smart HVAC Controller® app, Alexa, and Google Assistant.

Is this system energy efficient?

Absolutely. Inverter technology and R-454B refrigerant deliver high SEER2 efficiency.