The oil-filled ones are more or less OK, but try to look for a kerosene heater. There’s a place near Xinhai Rd selling them.
Most space heaters here are for small spaces.
For heating solutions look here:
or here:
[forumosa.com/taiwan/viewtopic.ph … ter#141886](5 degrees cold and Flipflops
or here:
forumosa.com/taiwan/viewtopic.ph … r&&start=0
have fun.