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

Now Shipping – In Stock and Nearly Caught Up! We’re excited to announce that the MRCOOL 5th Gen ENERGY STAR® Multi-Zone DIY Mini Split Heat Pump is now available. We are almost fully caught up on pre-order shipments, but please note there may still be a 1–2 week delay as we finish fulfilling all early reservations.

These advanced ductless systems use the new R-454B refrigerant, providing outstanding energy efficiency and a reduced environmental footprint. Whether you're upgrading your home's comfort or planning a new build, MRCOOL’s 5th Gen multi-head mini splits are in stock and 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.

Everything is in stock, and we’re actively getting caught up on shipments. While most orders are moving quickly, please note there may still be up to a 1-2 week delay as we finish processing the backlog. Orders are being fulfilled in the order they were received. ✅ Thank you for your patience and support during this exciting launch!

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