"I bought this heater for a 24x36 out building with 12 ft. sidewalls.Building has some insulation but could use more.This heater provides instant clean smelling heat .I have found that the air temperature might not heat up real fast but I can feel the warmth from the heater if I'm within about a 15' diameter of the heater.I only use this building for about an hour or so at a time otherwise the heater is on pilot.It would probably be too powerful for any building smaller than mine,as it is pretty powerful and intense"
What is your level of technical expertise? Home Handyman