I have met the Janome dealer from Hi ! You might give him a call and ask how the machines do there!! I do have a friend who has had a 350e that she uses and I’m not sure if she has ac !! I will ask her about her machine and let you know!!!
Maybe ask the dealer in NH how he stores his machines in winter and what happens if power goes out?
Good luck and enjoy HI !!
I loved it when visiting!!!
Kaye In La