extending HVAC ductwork. Hard to DIY?

[Tristicus]

Oh don't worry.
There will be no more useless contributions from me.
Just let me get this off my chest though.
I don't tout ANY expertise and should not have to. I've been around much more collective expertise and picked up things here and there. If people want to think I'm nothing more than a useless idiot googling and reading from textbooks [sic] then fine. I'm not familiar with codes but understand fundamentals of this stuff works.

Back to reality here and no more posts from me - ever.

You can eat your cake now. I'm done now.

D:

 

[Aharami]

what just happened here? iGas, if I push air from the basement blower to main floor, am I required to put a return there also?

 

[iGas]

what just happened here? iGas, if I push air from the basement blower to main floor, am I required to put a return there also?

Yes