Where to buy a portable kerosene heater?
Home Hardware sells one that says it’s approved for residential use in Canada. There were a couple of ones I saw, online, last time I checked them out, that were legal for indoor use in the US but not in Canada. Same heater, different safety regulations. If you get one, read and follow all the safety rules associated with it. Burning fuel like that indoors can have significant health hazards, like dying from lack of oxygen because the heater has used it all, or because it produces carbon monoxide. Every winter, somebody dies from using a fuel heater unsafely. If you can stand spending more, there are propane fueled direct vent heaters that are safer. They mount on a wall and have an air supply through to outdoors.