Lotus, my Bullet lives in a dry, unfinished basement where the coldest temps are no less than 60F in the winter. My basement has no heating or cooling, but I do run a dehumidifier that manages with summertime humidity to ~45%. It is 32F outside now and the basement is at 62F. The Bullet is performing well in that environment, but it is also better protected versus if I stored it in a non-climatized shed in my backyard.
Your thought about using the space heater with your Bullet in cold weather is correct. Electric roasters are very much affected by ambient temps (extreme hot and cold). At my age, it also about comfort when I roast. If I’m comfortable, the roaster is too and it is a lot more enjoyable to roast is an environment that isn’t harsh on me or the Bullet.
I’ve roasted for many years outdoors, in all seasons with both electric and gas roasters. Electric roasters just don’t fare well in outdoor cold weather use (from my experience) due to ambient temp effects upon the electronics. I’ve sent (3) lesser cost electric roasters to early graves by using them that way and they usually lasted about 2yrs. Those electric roasters were no where near as expensive as the Bullet and I decided not “test the waters” again on a $2,700 product. I can say that setting up the Bullet in my basement has been the best thing I’ve ever done. I have everything right there with the roaster and all I hafta do is roast and cleanup afterwards. The Bullet is performing very well with no indication of environmental effects upon the product.
You are on the right track and good luck with your solution.