Multi-Zone System
Published · Updated
A multi-zone mini split runs multiple indoor air handlers off a single outdoor unit. Each indoor unit controls a separate room or area independently, so you're not heating or cooling the whole house to make one room comfortable.
It's a popular choice for whole-home ductless installs or homes where several rooms need addressing. The outdoor unit handles the combined load, and each zone responds to its own remote. Sizing the outdoor unit correctly to match the total connected zones is critical. That's where the load calculation matters most.
Common Questions
What is a multi-zone mini split?
A multi-zone mini split runs multiple indoor air handlers off a single outdoor unit. Each indoor unit controls a separate room or area independently, and each zone responds to its own remote rather than to one shared thermostat.
When is a multi-zone system the right call?
Whole-home ductless installs and homes where several rooms need addressing are where multi-zone fits. Rather than heating or cooling the whole house to make one room comfortable, each area gets its own setting, the built form of zone cooling.
How is a multi-zone outdoor unit sized?
The outdoor unit handles the combined load of every zone connected to it, and sizing it correctly to match those zones is critical. This is where the load calculation matters most, because an error compounds across every room on the system.
Questions about your heating or cooling?
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