MRCOOL DIY 4 Zone Mini Split System Ceiling Cassette

MRCOOL DIY 4 Zone Mini Split System Ceiling Cassette

Professional multi-zone heating & cooling for your whole home

  • Pro Installation
  • 4-Zone Mini-Split System
  • 208-230V

Model: MRCL-MZP-DIY-4Z-CC

Create a whole-home comfort strategy across four rooms. This DIY multi-zone system delivers independent control and flexible configuration for more consistent temperature throughout the home.

$9,000 Starting at
  • In stock — ships in 1–2 business days
  • Financing options available at checkout

As low as $750/mo with Affirm

  • Professional installation required
  • Room-by-room control
  • One condenser, multiple zones
  • Inverter heat pump tech

Quick Answers Before You Buy

How many rooms can this system control?
This system is optimized for the number of indoor air handlers selected.
Does this system provide heating and cooling?
Yes — inverter heat pump technology provides efficient heating and cooling year-round.
Not sure which size you need?
Sq ft and home characteristics determine sizing. Use our Find My System tool for guidance.
✓ Secure checkout ✓ Fast, free nationwide delivery ✓ Expert support ✓ Factory warranty ✓ Financing options

Build Your System

Select room sizes and mounting type. Choose a line set length for each zone when your configuration is valid.

Mounting Type

Indoor Unit 1

Indoor Unit 2

Indoor Unit 3

Indoor Unit 4

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See the System in Action

Key Features

Multiple Zone Comfort

Multiple Zone Comfort

Condition multiple rooms with one system while each space maintains its own ideal comfort.

Year-Round Performance

Year-Round Performance

Engineered for dependable operation and consistent comfort in demanding summer and winter conditions.

App Control From Anywhere

App Control From Anywhere

Monitor and adjust your system remotely so your home is always comfortable when you arrive.

Will This System Work For Your Space?

BEST FOR Multiple rooms
one outdoor unit
ELECTRICAL 208-230V
circuit required
INSTALLATION Professional Install
system
CLIMATE Heating down to −13°F

Still unsure? Find My System

Learn More About This System

Detailed Specifications & Documentation

Whole-Home Zoning for Smarter Comfort Control

The MRCOOL DIY Multi-Zone 4 Zone System is built for homeowners who want to move beyond isolated comfort fixes and create a more complete, room-by-room comfort strategy. By connecting four indoor units to a single outdoor condenser, this system allows multiple areas of the home to be managed independently.

This is where ductless zoning begins to feel like a true whole-home solution rather than a targeted upgrade.

Ideal for Multi-Room Layouts

A 4 zone system is well-suited for homes with multiple bedrooms, shared living spaces, and areas that behave differently throughout the day. It helps eliminate hot and cold spots while giving each zone more direct control.

DIY Platform Benefits

MRCOOL DIY systems combine flexible system design with a more accessible installation process. Pre-charged QuickConnect line sets in compatible configurations help reduce complexity compared to traditional multi-zone HVAC systems.

Built for Real-World Homes

This system supports a range of indoor unit combinations, allowing the final configuration to match the layout of the home. Different room sizes and presentation preferences can be accommodated through available options.

Important Selection Note

This parent product is based on number of zones. Final system details, including condenser size and included components, are determined by the selected configuration.

  • System TypeMulti-Zone Mini Split
  • Zones Supported4
  • Mount TypeCeiling Cassette
  • Installation TypeDIY
  • Product TypeMulti-Zone Parent
  • SeriesDIY 5th Gen Multi Zone
  • Voltage208-230V
  • RefrigerantR-454B

Installation guides and documentation will be available for download soon.

Will this work for my home?
Yes — Olympus Multi-Zone systems heat and cool multiple rooms using one outdoor unit. Indoor unit sizes are selected based on each room's size and layout for optimal comfort.
Who installs this system?
These systems are installed by a licensed HVAC technician using traditional installation methods to ensure optimal performance and reliability.
How many rooms can one system support?
Depending on the model, a single outdoor unit can support multiple indoor units, allowing several rooms or areas to be conditioned from one system.
Can each room have its own temperature?
Yes — each indoor unit operates independently, allowing rooms to maintain different comfort settings.
What is included with the system?
Systems include the outdoor condenser and selected indoor air handlers. Your installer supplies line sets, mounting materials, and other standard installation components.
Does it heat in winter?
Yes — Olympus Multi-Zone systems provide reliable heating in cold outdoor temperatures for year-round comfort.
What warranty is included?
Warranty includes a 5-year parts warranty and 7-year compressor warranty. Warranty applies with professional installation.

Need Help From a MRCOOL Expert?

Not sure which system is right? Our HVAC specialists can help you choose the correct size and configuration.

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