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MRCOOL 5th Gen Multi-Zone Mini Split Systems (1–6 Zones)

Now available for pre-order – shipping early August 2025! Discover the latest evolution in residential and commercial comfort: the MRCOOL 5th Gen ENERGY STAR® Multi-Zone DIY Mini Split Heat Pump. These advanced ductless systems utilize the new R-454B refrigerant, delivering superior efficiency and a reduced environmental footprint.

Whether you're upgrading your home's comfort or designing a multi-room system for a new build, MRCOOL’s 5th Gen multi-head mini splits are available in 1 to 6 zone configurations – including the all-new 6-zone model. This is the most powerful and flexible DIY-ready HVAC lineup yet.

Explore system features, installation options, use cases, and sizing tips by expanding the tabs below.

  • R-454B Refrigerant: Low-GWP refrigerant that meets modern EPA guidelines and enhances efficiency.
  • Up to 6 Zones: One outdoor unit can heat and cool 2 to 6 rooms independently.
  • DIY Installation: Includes pre-charged Quick Connect line sets, making this the best DIY-friendly zoned mini split on the market.
  • Versatile Air Handler Types: Choose from wall-mounted units, ceiling cassettes, and coming soon: slim ducted handlers.
  • Energy Smart: Variable-speed inverter compressor technology with ENERGY STAR® performance.
  • Home Automation Ready: Supports Wi-Fi control, Amazon Alexa, and Google Home voice commands.

This is more than just a mini split—it’s a revolution in do-it-yourself HVAC systems. Unlike traditional ducted installs, the MRCOOL Multi-Zone Series is equipped with pre-charged, no-vacuum-required line sets and quick connections.

Skip the costly HVAC crew. If you're handy with tools and familiar with basic installation techniques, this is the ideal multi-zone ductless air conditioner and heat pump system for you. Even if you outsource installation, using a general contractor or handyman can slash your labor costs.

Perfect for DIY homeowners, rental property owners, builders, and HVAC contractors looking to save time and money.

These flexible MRCOOL multi-zone systems are perfect for:

  • Residential Homes: Control the temperature of each room independently.
  • Multi-Family Housing: Condos, apartments, and rental properties benefit from cost-effective zoning.
  • Renovations & Retrofits: Ideal for replacing outdated systems or adding cooling to additions.
  • Contractors & Developers: Save big on time and cost during construction phases.
  • Modular or Tiny Homes: Low power draw and compact units make them ideal for limited spaces.

The 5th Gen MRCOOL Multi-Zone Heat Pump supports combinations up to 62,000 BTUs. Match room size and insulation level to determine the correct zone size:

  • 9k to 36k BTU Wall Mount Handlers: Common for bedrooms, basements, garages, and living areas.
  • Ceiling Cassettes: Discreet option for large open rooms or commercial offices.
  • Ducted Handlers (Coming Soon): Deliver hidden air delivery while connecting to shared rooms.

We offer bundled zone kits for all layouts, from 2-zone mini split systems to 6-zone heat pump configurations. Need help? Use our zone planner tool or talk to a MRCOOL expert.

Pre-orders are now open for the 5th Generation MRCOOL Multi-Zone Systems. This includes all zone counts (1–6 zones), all using the new R-454B refrigerant and designed for fast, easy installation.

Shipping begins in early August 2025. Quantities are limited for the first wave, so we recommend reserving your system now.

Order from MRCOOL DIY Direct – the nation’s trusted source for genuine MRCOOL equipment and accessories.