[gwittel]

Many of the Mitsubishi heat pumps work with central ducted systems just fine. I have one (replaced a central gas heat, electric AC system). It’s just a different air handler but the heat pump was the same as would have been used in a mini-split install.

When cross shopping the Mitsubishi vs Trane, the Mitsubishi was miles ahead. I didn’t even get the most cold weather efficient option (not needed for my climate).

[adrianmonk]

Oh, you must be right. I was finally able to find this on Mitsubishi's site:

https://www.mitsubishicomfort.com/residential/products/ducte...

And that says it's compatible with some "hyper-heat" outdoor units. So apparently they do offer both.

[philips]

How did you find a Mitsubishi installer? I like the product but couldn’t find a contractor in the Portland Oregon area.

[gwittel]

I used Mitsubishis site to find the local “diamond” contractors (those factory trained and do enough volume). Then cross referenced vs yelp.

https://www.mitsubishicomfort.com/find-a-contractor

I see a few in Portland and several in nearby zip codes. Hopefully one can work for you. There are different tiers of “diamond” so you can compare if the difference matters to you.

One thing that’s a bit different is the air handler and outside compressor run on one circuit (mine is a 3 ton unit). So there’s a power line between the 2 units. That threw off our city inspector. But it works out nice since I now have an extra 20A breaker free :)

[philips]

Thanks! Do you have the technical docs with the efficiency curves for the Mitsubishi ducted systems? I can’t find the materials amongst all the marketing.

For example this is the Carrier Infinity 24 we are considering. https://d1049ui2fjityy.cloudfront.net/userfiles/inriver/docu...

[gwittel]

For reference, here’s what we have: 36KBTU AIRHANDLER/HEATPUMP HI-STATIC M SERIES DUCTED SYSTEM INDOOR MOD# SVZ-KP36NA OUTDOOR MOD# SUZ-KA36NA2

It’s a slightly older model as we had height restrictions to work around. This prevented us from getting a newer or hyper heat model. IIRC ours had good efficiency into the 20F range which was plenty for us.

In comparison, the Trane dropped efficiency at 50F and needed heat strips at that temp (so pretty crap).

[gwittel]

I found it in their catalog. You’ll need your model or series. After all the specs there were some efficiency/temp tables. It was under Pros (vs homeowner) -> USA -> product support -> catalog -> m and p series.

Catalog:

https://mylinkdrive.com/viewPdf?srcUrl=http://enter.mehvac.c...

pocket guide:

https://mylinkdrive.com/viewPdf?srcUrl=http://enter.mehvac.c...