A guy I know has an attatched garage with the bigger heater like that and it doesn't keep up with the real cold weather. I have one of those big torpedo heaters that runs off diesel fuel. I run #1 in it and it heats up my 2.5 stall very well and does it within 20 minutes. BUT if I was to do it over again I would have wired up a 220 electric heater and been done with it. Quieter, cleaner, and you don't have to stand out in the cold and fill up a can for diesel fuel either. One other good thing about the diesel heater is that you can aim it at one certain area or thing and warm it up quick and you can light your cig off it too:biggrin: