ContrarianTrail

That's what expansion tanks are for. There shouldn't be any air in the system itself.

Plumber here.

It's a closed circuit. When you're bleeding out air the pressure in the system drops. When there's no sufficient pressure the water wont reach the upper floors.

Under normal circumstances the system is bled of air once and then they add more water untill the optimal pressure is reached and that's it. You shouldn't need to bleed air or add water ever again. The fact that you keep bleeding it indicates that new air is introduced somehow. Usually this means there's a leak and someone keeps topping it up with fresh water which contains air that then need to be bled out again.

Alternatively the issue could also be non-plumbers like yourself who keep bleeding the radiators on their own and then the maintenance keeps adding more water and wondering why the pressure always drops again. In my part of the world it's forbidden for the residents to bleed their radiators for this very reason.

Also, the radiator lines are usually steel. The reason they don't rust is lack of oxygen. Now with constantly more water and thus air being added to the system the corrosion keeps on advancing.

I've yet to see generative AI make an error that a human couldn't make. Maybe that's why people seem so hateful of it; they were expecting it to be superhuman but instead it's too much like us.

Twitter is still free to use as always.

I wouldn't go as far as to claim no one would

I only changed it once with the extra can I bought with the mower but never since. I'd imagine it easily costing somewhere around 20 to 30 euros a year so that'll pretty much cover a new mower every 10 years.

For the money you save by not doing the oil change you can probably afford a new mower every 10 years or so.

Aren't the grad students similarly trained on books that other people wrote?

You get to use it for free instead of paying $20 a month.

I take slight issue with every demand to not use a specific word. I think the better advice here would be to simply suggest not calling people names to begin with. It's not what you call them that's the issue, but rather the intention to offend in the first place.