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Mitsubishi Split Component Compatibility

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Brian R
Brian R Member Posts: 18
in A-C, Heat Pumps & Refrigeration
I have an older MXZ-4b36na outdoor unit which I have both an available zone connection, and capacity to allow an additional indoor unit. Recently, Mitsubishi came out with a new narrow design ceiling cassette (MLZ-KP series) which fits a standard joust spacing. I would like to install one of them. According to their compatibility charts, my older MXZ-4B outdoor unit is not listed. I also get conflicting advice from local contractors, and of course the distributor won't talk to me. (Haven't yet contacted Mitsubishi directly) So, from your expertise, will this new design cassette cooperate with my older outdoor unit? Thank you in advance. Brian

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  • ratio
    ratio Member Posts: 3,629
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    The last I heard, you were good one generation in either direction, but not two. We had to replace an indoor unit because of that once. Too bad the guestimator missed that.

    I've had only good experiences with Mitsubishi tech support. Worth a shot, & that's the closest you're going to get without actually trying it.

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