Mitsubishi ducted units (PEAD, PVA, MVZ)
I’ve been considering having a Fujitsu Slim Duct system installed, and I decided to take a closer look at similar options from other manufacturers.
The following models from Mitsubishi were most interesting:
-PEAD (slim duct style, up to 0.6 static pressure)
-PVA/MVZ (traditional looking air handlers, up to 0.8 static pressure).
Are these Mitsubishi units generally well regarded? The principal advantage over the Fujitsu appears to be higher available static pressure (Fujitsu is 0.36 max). The principal disadvantages relative to Fujitsu seem to be (1) reduced modulating capability (PEAD and PVZ have minimum capacities around 9-10k BTUs on the nominal 24k air handler; Fujitsu is 3.1k minimum), and (2) at least for the PEAD and PVA, they do not maintain heating capacity as high at lower temperatures. Any other major differences that would be considered significant to an average residential consumer?
As for PVA air handler vs MVZ air handler, they seem pretty similar except that the MVZ is matched to a multi-head outdoor unit and therefore does not modulate the way that the PVA does. However, if matched to a hyper heat ODU, the MVZ maintains higher heat capacity down to lower temperatures. The PVA only has hyper heat capabilities when matched with the correct hyper heat ODU of at least 30k btu, but then its minimum modulating capability (in the 30k nominal unit) goes from ~10k to ~18k.
As for the PEAD “slim duct” style units, in addition to having lower available static pressure compared to PVA/MVZ (0.6 vs 0.8), the other major difference I notice is dehumidification capability. For a 24k PEAD matched with a PUZ ODU, data sheets show 6.9 pints per hour for a sensible heat ratio of 0.68. For a 24k PVA matched with the same PUZ air handler, data sheets show only 3.0 pints per hour for a sensible heat ratio of 0.83. PEADs also have a small advantage in efficiency.
Have I captured the major differences between these units? Other than static pressure and duct work concerns (and multi-split vs single split), is there any other consideration that would steer you towards a PEAD vs a PVA/MVZ?
Also, does anybody know if the PVA/MVZ air handler units are powered by the electrical connection from the ODU like a normal mini split? Or do the PVA/MVZ air handlers require separate electrical wiring and their own 240v breakers in the electrical panel? Looking at data sheets it looks like they receive power from the ODU like normal mini splits.
Thanks for any input.
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