We just moved into a new place and I couldn't even hold my hands outside the covers at night, I was so cold. It didn't matter what temperature we had the thermostat at either, there was always a cold draft.

So I bought a 10 window box and figured I'd just do a few rooms. My boyfriend was skeptical because.... Well, it's like saran wrap. And looks tacky. Fair.

But holy crap, the place is downright balmy now. We did every room. Turned the thermostat down to 65 for the night and I actually got TOO WARM.

When I'm cold at home I have a hard time doing other stuff, work, hobbies, whatever. I hope this helps someone cozy up their house this winter and lower their heating bills.

Edit: this is what I bought, I think they're all probably pretty similar. Covered 5 standard double hung windows with a little left over, I assume they're counting each pane as 1.

https://www.amazon.com/gp/aw/d/B09JM8DCYL