[latchkey]

6" wide piece of cardboard that is floor to ceiling of the balcony door. Put it on the side where the door locks. Cut a hole near the bottom of it and stick the flexible tubing through it. Now you can shut the door and hold the cardboard in, while still maintaining the climate control.

You can use something thicker than cardboard like the plastic version of cardboard... google: 'Corrugated Plastic Polycarbonate Acrylic Sheets'.

I was also thinking that you can even extend a pole out your balcony and attach the tube to that. This way, the air makes it far enough out that it won't even blow back.

[sho_hn]

I appreciate this, the challenge is that the wife won't let me get away with that level of jank (the balcony door opens into the living room) ... :-)

In the next life I'll get a house and build it around the 3D printer.

[latchkey]

You can do it non-jank. I just realized there are products for this (mostly around portable AC exhaust vents). Google 'sliding door vent kit'.

https://www.amazon.com/sliding-door-vent-kit/s?k=sliding+doo...

> In the next life I'll get a house and build it around the 3D printer.

Or just 3d print a new wife? (joking)

[sho_hn]

That does look not-so-bad, but ... unfortunately we also don't have a sliding door. Nor sliding windows. Germany goes for those mechanically complicated multi-direction tilt/swing hinges instead. They're super mental (and metal), and break my aspirations.

I know, I'm not an easy customer.

> Or just 3d print a new wife? (joking)

I've seen too many terrible Benchys in reviews to fall for this one!

[jannyfer]

Some balcony doors aren't sliding but instead swing open, so that makes it more difficult as well.