[rickst29]

It's most likely the smoke detector over the bed.

I also experienced the 'infernal beeping' through winter a few years ago. In more recent years, I have always pulled the smoke detector batteries for winter storage. I remove the detector body (as in changing the batteries), and then set it on the bench seat (without any batteries in it at all). Placed on that seat, it's impossible to ignore when packing for my first trip in the Spring. That's when I install a fresh set of batteries, and clamp it back in place above the bed.