Multiple Minisplits vs. Multizone System
To go ductless means a lot of miniplit heads. On top of that my local energy codes demand a minisplit system that is energy star certified. That is easy to find in single zone systems. But in multi zone, not so much. Ideally I’d like one of those 8-zone capable unit to serve a 4 bedroom house with an office. Even a 5 zone unit is a stretch. And for climate zone 5, I need a “hyperheat” model or equivalent.
One can get around this energy star requirement by installed 2 multi-zone units that are energy star certified, such as this L4L30A09090912. 2 of Them would provide 8 zones.
What I’m wondering is, is it better to do an 8-zone unit or 2x 4 zone units? How big of a difference should I expect for installation costs? what about overall energy use? I think the 8zones require branch boxes etc and is more complicated to install. And if they are significantly less efficient, then 2x 4 zone might be better?
Another possibility is to use in wall ducted heads and split the output into bedrooms that are next to each other. But again, I’m having difficulty finding ducted heads that are energy star compliant. It seems the standard wall mount units are always the most efficient and any other type of head is rarely energy star certified. Any recommendations on where to look?
Edit: I just saw a similar question posted in 2019:
I’ll read through that but I’ll leave mine up for now hoping maybe there are newer models that may have come out since then that people might recommend me to research.
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