Electric space heater

The Home Store on the third floor of The Gallerias Mall in Guadalajara is having a sale and there are quite a number of electric heaters available... big and small.

Here's one... and scroll down for more...
https://www.thehomestore.com.mx/en/Categor%C3%ADa/Cocina-y-Electrodom%C3%A9sticos/CALEFACTOR-DELONGHI/p/172373

It may take a while until the interior heats up.
Anyway, I always buy things in the opposite season to when they will be needed because the prices are better and to be sure that I have it when I need it.
BTW, I have an electric "wood burning" stove that I turned on November 1st of last year. It has a thermostat and just goes about its business cycling on and off as needed. For the first time in YEARS, I've been comfortably warm 24/7. Surprisingly, it doesn't use THAT much electricity. I also have a back up propane heater in case the electricity goes out. Fortunately, that didn't happen this year. I would not leave a propane heater on all night though which always made the house cold every morning... and then I had to play catch up.

My entire home is about 900 sq feet and the heater keeps it all warm. I also have an electric mattress cover with dual controls. My side is off but the dogs' side is on. They're happy campers.
My windows have no air leaks but I put rolled towels at the bottom of the outside doors. I discarded all the louvered windows because they let the cold air in during the winter and the hot air in during the summer.