Got a call today to fix an old kerosene room heater and had to decline because as I told her its too much liability to even try because I had no experiance with them.Offered to install a furnace even offered a used one at reduced price but she declined. Now im not talking about a "kerosun" wick type heaters but a piped in vented 1930-40 model im guessing with the old carborators on them. Ive seen 1 in my life and it has a float that controlls the flow of fuel and gravity feeds it to the burner or whatever.What im asking does anyone here know what im talking about and have you ever worked on them? I really would like to have it to learn about it and have for the history buff in me. So chime in if youve seen them and maybe give us a kinda broad description of how it works exactly.