|This little unit is a Beacon Morris 45,000 BTU natural gas over-head heater. My garage is a well-insulated small triple so this should be more than sufficient to keep it comfortable. My intensions are to keep the garage a constant 40 to 45-degrees and bump it up to around 60-degrees (the perfect temperature to work in) when I'm in there. It will probably run about $30/month to heat it once the weather gets really nasty – depending on how often I work on the car. Money well spent!