HVAC Rheia System

First time seeing this Rheia heating system!
A Rheia heating system?
The ducts are small 3” ducts that go to each heat vent in the wall. These ducts are not insulated.
I found the heat distribution measured about 25% difference from the warmest heat vent to the coolest heat vent in this small 1600 sqft one level home.
Has anyone came across the Rheia HVAC system?

Nope, never heard or seen one, even though it seems to have come about in my State. No surprise it was designed as a ‘cheap’ “short cut” for new home builders!

I much prefer the “Hi-Velocity” version that (I believe) this principle was taken from…

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