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Community and Q&A

Mitsubishi PEAD vs SVZ

connorkatz | Posted in Mechanicals on

Hey All,

 

I am in the process of specing out HVAC equipment w my installer. We will be using the MXZ-SM heat pump from Mitsubishi.

There will be 2 indoor units. In my head, I always was thinking they would be the PEAD units. But  the HVAC installer is suggesting using the bigger SVZs at least for one of them.

They both come in the needed capacities (around 2 tons each) and at least from a pure equipment cost, seem to be in the same ballpark cost wise.

The higher static pressure of the SVZ shouldn’t be needed.

Other than just the pure size difference, wondering if anyone can help explain pros/cons of using one vs the other.

Thanks!

P.S. Rough mechanical layout attached for reference (some things have changed, not using a CERV2 for instance)

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Replies

  1. Expert Member
    AKOS TOTH | | #1

    The PEAD is ceiling mount only, can't be mounted vertically. Both inlet and outlet are non-standard size so unless you get the duct and filter board from Mitsubishi, you are looking at costum plenums.

    The SVZ is much closer to a standard air handler, so your installer will have a much easier time using it.

    P.S. I would doublecheck that 4 ton of total cooling. That is a lot of AC. The turndown on those, and most multi splits, is pretty bad. A 4 ton MXZ-SM only goes down to 16000BTU cooling, that usually increases a bit with two zones, so make sure you get your cooling load right as there isn't all that much margin on these. A pair of SUZ-KA18NA2/ SVZ-KP18NA is a much better option.

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