That’s pretty much my experience too—after I upgraded, the place felt way cozier but suddenly the bathroom mirror was fogged up constantly. Funny how sealing things up tight brings a whole new set of “indoor climate” issues. Still, I’ll take a little extra monitoring if it means not freezing in the winter. Sensors and gadgets everywhere now, but hey, it’s kind of fun tracking all this stuff.
I get what you’re saying—when I swapped in triple pane windows, the house definitely got snugger, but suddenly moisture started showing up in weird spots. Bathroom mirror fog is classic, but I even noticed more condensation on some interior walls during showers. Air exchange is way less forgiving now. I ended up installing a basic HRV system to keep humidity in check. It’s another expense, sure, but honestly, I’d rather deal with that than drafty rooms and cranked-up heating bills all winter. Sealing things up tight just means you’ve gotta think about airflow more deliberately.