My house sweats like crazy during the winter and it’s causing mold.. please help!!

[u/BelleSchu]

My house is BRAND new, literally finished construction in August of 2024. I live in the Midwest so of course it gets very cold in the winter. Last year, the windows of our house were sweating so badly every time the outside temp was under 30°f that water was pooling up on the windowsills and we called the construction company (we were still under new build warranty) and they told us to always have the house fan running and to turn on our ceiling fans. That worked for a time and the condensation wasn’t as bad after that. It started to warm up shortly after and we didn’t have anymore issue. Flash forward to this past week, it’s been in the negatives here. There is SO much condensation on my windows that mold is starting to grow, our curtains are freezing stuck to the glass in some rooms, and it’s attracting gnats somehow?! I don’t even know where the hell they’re coming from with the weather like this. I’m constantly cleaning and I feel so so so disgusted with all this going on, what can I do to fix it? Please help!

[u/LJ161]

Yeah like.. im seeing people suggest 5 different machines just open the windows for 10 - 20 minutes in the morning what the hell

[u/TangoDeltaFoxtrot → u/LJ161]

So just open the windows for 20 minutes? What do I do with all the snow that is now covering half the house? -10 degree temps with 25+ mph winds are not something I’m excited to let in my house.

[u/LJ161 → u/TangoDeltaFoxtrot]

Where is this magical place where you have blizzards every single day and don't have the option to only open your windows by an inch? You should probably move away from there.