Your message is welcome, and does not sound to be breaking any etiquette to me.

I’m so sorry you have that problem. The window insulation should still help, though.

I’m not sure this counts, but the best upgrade I ever made for my home was having new windows installed 20 years ago. I couldn’t open the old ones.

During the summer, most days I can avoid air conditioning just by opening the windows and getting a cross breeze. I hear my neighbors’ airco turning on, while I am smug with the knowledge that I made a long-term frugal and green investment.