MRCOOL® DIY 18K BTU Multi-Zone Condenser | 230V Outdoor Unit

Product Overview

The MRCOOL DIY 18K BTU Multi-Zone Condenser is a powerful 230V outdoor unit that can heat and cool up to three rooms (with a combined area of 750 sq. ft.). Engineered for true DIY installation, this 5th Generation system uses pre-charged QuickConnect® linesets (sold separately) for a vacuum-free, tool-simple setup—no HVAC professional needed.

Key Features & Benefits

✅ Three-Zone Flexibility – Connect up to three indoor air handlers (sold separately) to independently control the temperature in three different rooms.

✅ High-Efficiency Operation – Rated at 23.9 SEER2 for cooling and 10 HSPF2 for heating, delivering significant energy savings year-round.

✅ DIY QuickConnect® System – Uses pre-charged linesets with R-454B refrigerant (sold separately). No vacuum pump or refrigerant handling required.

✅ Smart Home Integration – Compatible with the Smart HVAC app for scheduling, remote control, and voice commands via Amazon Alexa and Google Home.

✅ All-in-One Control – Manage temperature, modes, and schedules for all three zones from a single app or with your voice.

✅ Robust Warranty Protection – Includes a 7-year compressor warranty, 5-year parts warranty, and a Limited Lifetime Replacement warranty with MRCOOL Care Program enrollment.

✅ 230V Power – Provides efficient, high-capacity performance for multi-room applications.

Technical Specifications

• Model Type: Multi-Zone Outdoor Condenser | 5th Generation

• Total System Capacity: 18,000 BTU (supports up to 3 zones)

• Voltage: 230V

• Max Combined Coverage: Up to 750 sq. ft.

• Cooling Efficiency: 23.9 SEER2

• Heating Efficiency: 10 HSPF2

• Refrigerant: R-454B (used in compatible pre-charged linesets)

• Compatible Indoor Units: Up to 3 MRCOOL DIY Air Handlers (sold separately)

• Control: Smart HVAC App, Voice Control (Alexa/Google)

• Warranty: 7-Year Compressor, 5-Year Parts, Limited Lifetime with enrollment

What’s Included

• MRCOOL DIY 18K BTU Multi-Zone Outdoor Condenser (230V)

Recommended for Complete System (Sold Separately)

• MRCOOL DIY Air Handlers (up to 3 units, e.g., 6K, 9K, or 12K BTU each)

• MRCOOL DIY QuickConnect® Pre-Charged Line Sets (one per indoor unit)

• DIYPro® Cables (one per indoor unit, often included with air handlers)

• Condenser pad or wall-mount bracket

• Line hide cover kits (recommended)

• Electrical disconnect box (per local code)

Why Choose This Multi-Zone Condenser?

This condenser is the heart of a customizable, multi-room DIY mini-split system. It allows you to create up to three independent climate zones—perfect for bedrooms, home offices, or living areas—all controlled from one efficient outdoor unit. With high SEER2/HSPF2 ratings, smart app control, and industry-leading warranties, it’s designed for homeowners who want professional comfort with DIY simplicity and savings.

Perfect For

• Cooling and heating 3 bedrooms

• Home office + living room + bedroom setups

• Multi-room rentals or apartment units

• Basement zones or floor-level additions

• Garage + workshop + studio configurations

Ready to heat and cool multiple rooms with one system?
This MRCOOL DIY 18K BTU Multi-Zone Condenser makes whole-home comfort achievable and affordable.

🛒 Add to Cart Today – Build Your Multi-Zone System This Weekend!

Need help choosing indoor units? Explore our full range of MRCOOL DIY Air Handlers in 6K, 9K, 12K, 18K, 24K and 36K BTU sizes.