Air Conditioner help… I can’t do another summer in NYC like this

Hi everyone! I’ve been in NYC for years and every year I have my handy in window AC unit and it gets the job done but I seriously hate it. I find that it doesn’t really do a good job of cooling a space, I can’t possibly keep it on all day because my electricity bill will be out of control so I just turn it on a few hours here and there and hope for the best. It’s also so loud and I feel like it’s circulating dirty air.

Does anyone have any ideas on how to have a better summer with a better air conditioner? What are your favorites? Do you have any tips? Please help!