800 cfm from a ducted minisplit?
I paid someone to perform a manual J calculation for me for my house renovation project, in which I’ll be converting my 3500 s.f. house to heated/cooled exclusively using minisplits.
He convinced me to use a ducted system for the large common area (kitchen + dining + living room). I’d say it’s roughly 1000sf. He came up with this design. Is this too much for a ducted minisplit to handle? He has told me he doesn’t do minisplit calcs often, usually they’re central systems.
I’ve been looking at LG products, and they don’t seem to have a ducted minisplit that can do 800 cfm. What confuses me a bit is when he showed me this design, he says that he calculated it using a low static value (<0.3). I don’t really understand the relationship between CFM and static pressure, but LG’s low static units don’t put out 800 cfm according to the specs.
Thanks in advance.
P.S. – I was originally intent on having wall-mount units instead of a ducted system here, but was convinced otherwise by the guy performing the calcs. Let me know if you guys think wall units are still a better idea for this area.
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