MRCOOL DIY 5th Gen 27,000 BTU 4‑Zone Ductless Mini Split Heat Pump System (Two 6K + Two 12K Air Handlers with 25 ft & 50 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 25 ft & 50 ft QuickConnect Line Sets)

The MRCOOL DIY® 5th Gen 27,000 BTU 4‑Zone Ductless Mini Split Heat Pump System (DIYM327HPW02D23) is a versatile HVAC solution designed to deliver individualized comfort to multiple zones in your home or workspace. This complete system pairs a 27,000 BTU outdoor condenser with four indoor wall‑mounted air handlers — two rated at 6,000 BTU and two at 12,000 BTU — allowing customized heating and cooling control across different rooms. Whether you’re conditioning bedrooms, living areas, offices, or bonus spaces, this system provides reliable and balanced performance.

Installation is engineered for homeowners with true DIY convenience. Included pre‑charged QuickConnect® line sets eliminate the need for vacuum pumps, refrigerant gauges, or professional HVAC tools. With a mix of two 25‑ft and two 50‑ft line sets, you have flexibility to position your indoor units at a variety of distances from the outdoor condenser to suit your floor plan. The DIYPRO® communication cable simplifies wiring, so setup can be completed with basic tools.

Each indoor unit has its own wireless remote control and thermostat, letting you fine‑tune the temperature in each zone independently. With advanced DC inverter technology, the system operates quietly while maintaining efficient performance throughout the year. Smart control compatibility adds modern convenience, allowing remote operation and integration with voice assistant systems.

Built to last, this system features rugged construction and corrosion‑resistant outdoor components that help ensure long‑term durability. Backed by robust manufacturer warranty coverage, the MRCOOL DIY® 27 K multi‑zone mini split system delivers powerful zoned comfort, energy‑efficient performance, and true DIY installation simplicity.

Features

• Zoned comfort with four independently controlled zones

• Includes indoor air handlers: two 6,000 BTU + two 12,000 BTU

• DIY‑friendly installation with pre‑charged QuickConnect® line sets

• Mix of 25 ft and 50 ft line sets for flexible installation

• Uses R‑454B refrigerant for improved environmental performance

• Quiet, energy‑efficient DC inverter compressor

• Wireless remote controls for each indoor unit

• Smart control capable — remote app and voice assistant ready

• Corrosion‑resistant outdoor unit for lasting performance

• Ideal for residential or light commercial multi‑room comfort

Specifications

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

What’s Included

✔ MRCOOL® DIY® 4-Zone Outdoor Condenser

• Model: DIY-MULTI4-27HP230D-O

• 27,000 BTU | 230V | Inverter Heat Pump

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

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

• Model: DIY-06-HP-WMAH-230D25-O

• Ideal for rooms up to ~200 sq. ft. each

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

• Model: DIY-12-HP-WMAH-230D25-O

• Ideal for rooms up to ~550 sq. ft.

✔ (2) MRCOOL® DIY® 25 ft QuickConnect® Line Sets

• Model: DIY25-1438-O

• Factory pre-charged with R-454B refrigerant

✔ (1) MRCOOL® DIY® 50 ft QuickConnect® Line Set w/ DIYPRO® Cable

• Model: DIY50-1438C-O

• Extended-length line set with integrated communication wire

✔ Wireless remotes for each air handler

✔ DIY® QuickConnect® fittings

✔ Factory-sealed refrigerant system

📱 Smart phone not included

Frequently Asked Questions (FAQ's)

Can I install this system myself?

Yes. MRCOOL® DIY® systems are designed specifically for homeowner installation using QuickConnect® technology.

Do I need special HVAC tools or refrigerant handling?

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

Can each room be controlled independently?

Yes. Each air handler has its own thermostat and remote.

Is this system compatible with smart home devices?

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

Is this system energy efficient?

Absolutely. DC inverter technology and R-454B refrigerant maximize efficiency and lower operating costs.