Mr. Cool DIY 27,000 BTU 5th Gen 4 Zone Multi-Zone Outdoor Unit - R454B

MRCOOL® DIY-MULTI4-27HP230D-O DIY® 27K BTU R-454B Multi-Zone Ductless Mini-Split Condenser
The DIY-MULTI4-27HP230D-O 5th Generation MRCOOL® DIY® 27K BTU Multi-Zone Ductless Mini-Split Condenser delivers efficient, customizable heating and cooling for up to four zones totaling 1,000–1,200 sq ft. With impressive 23 SEER2 and 9.5 HSPF2-4 ratings, this unit saves energy and money while offering true DIY installation—no HVAC professional required. It pairs with MRCOOL® Quick Connect® pre-charged line sets (sold separately) containing eco-friendly R-454B refrigerant for faster, cleaner installation without vacuuming. Control is effortless via the SmartHVAC app, wireless remote, or voice commands through Amazon Alexa and Google Assistant. The app also allows for schedule setting, energy monitoring, and full comfort customization. Backed by a limited lifetime replacement warranty (with MRCOOL® Care Program enrollment), plus 7-year compressor and 5-year parts coverage, this condenser provides long-term reliability, energy efficiency, and multi-room comfort.

General Information
System Type: Multi-zone ductless mini-split condenser
Model: DIY-MULTI4-27HP230D-O MRCOOL® DIY® 27K BTU Multi-Zone
Capacity: 27,000 BTU Heating & Cooling
Zones Supported: Up to 4 air handlers
Total Room Size: 1,000–1,200 sq ft combined
Efficiency Ratings: 23 SEER2 / 9.5 HSPF2-4
Refrigerant: R-454B (pre-charged Quick Connect® line sets compatible, sold separately)

Key Features
High Efficiency: 23 SEER2 and 9.5 HSPF2-4 for energy savings
DIY Installation: No professional tools or services required
Eco-Friendly Refrigerant: R-454B for reduced environmental impact
Multi-Zone Support: Connect up to 4 air handlers for whole-home comfort
Smart Controls: App, remote, and voice integration with Alexa & Google Assistant
Custom Comfort: Schedule, temperature, and energy monitoring via app
Warranty Protection: Limited lifetime replacement, 7-year compressor, 5-year parts

Included Components
DIY-MULTI4-27HP230D-O - MRCOOL® DIY® 27K BTU multi-zone condenser

Ideal For
Homeowners wanting efficient, DIY-installed multi-zone heating and cooling for large areas or multiple rooms, with smart control capabilities and strong warranty protection.