We've recently moved to a new location in the outer suburbs, and in new shared offices. In our previous location, we had no ability to open windows, or control heating and cooling.
In our new offices, we can now open the windows, and have an individual heater/air conditioner for every office.
I share an office with two other people which makes this complicated.
One runs hot like me, and prefers it to be cooler (but not freezing!) I would say 22-23 is comfortable (though to be honest at home I would keep it more in the 20 range, but I'm happy to compromise). The other runs cold, and prefers it hotter, around 28 if they could! They constantly turn the air con off even when we set it to 24, and when we compromise with opening one of the windows to let fresh air in, they shut the window too, complaining that the wind and the sound is distracting. They also keep the office door closed as it gets quite noisy outside, so no other air circulates, it gets VERY stuffy and hot with three people in a not-so-large space.
How might we best approach this situation without seeming like we're ganging up on the individual? I don't mind open windows, I prefer it over a freezing cold air conditioner, but to not be able to do that either is getting ridiculous and affecting my work productivity. I don't want the individual to feel bad either, and just want to come to a good solution/compromise for the three of us so we can work better.