So let's play design AR's new duct system!
Whoever built my house was on crack. It's really neat and I love it, but it has a lot of vaulted ceilings and little alcoves and it's just generally insane. It's a 2 story house, and most of the entire system and ducting resides in the attic above 2 upstairs bedrooms and the upstairs hallway bathroom.
Whoever installed the AC/Heating system picked a stupid location for the Coil/Furnace (I think at least), and did not know how to run ductwork for the life of them. The ducts are way too long in some areas, make multiple u-turns, are weird sizes, all leading to poor airflow.
There are only 3 drops from the upstairs attic leading to the downstairs rooms. (I have them labeled 'DS Supply Trunk', and are colored Yellow.) So ran from the plenum, down about 10 feet through the upstairs bedroom/bathroom walls, then deployed through furdowns downstairs. All the drops are undersized, and I can see them crushed in the walls, so they are pretty much useless
A few weeks ago, I went up in the attic and at least straightened what I could, and strapped it all up (It was all just laying draped everywhere) and it helped airflow considerably, but I saw how much better it could have been designed. So, I broke out my chart making software and went to town. I have the ductwork squared off, but it'll obviously be straighter in real life. It's not exactly to scale, but it's close enough.
I have included a Current Upstairs and Downstair, and some future ideas. I'm looking for opinions on my Future plans. I'm fully capable of DIYing this; I just need opinions on the best design to maximize airflow.
Once I have an idea of the routes to take, I'll run a CFM calculator for the best sizes, etc.
Unfortunately, I won't be moving any of the actual equipment, as that would require a contractor, yada yada yada.
Here's the Current Attic/Upstairs
Here's the Current Downstairs. The Yellow Supply Trunks match the upstairs picture. These are completely crushed within the walls, so 0 airflow.
Also note how there's no supply to the actual kitchen.
So, feel free to offer tips and pointers on how best to do this!