Are you trying to avoid the potential danger of a space heater?  Are you trying to heat a room or garage more efficiently than with a space heater?  Have you considered a ceiling fan?

The fan pictured above, the Reiker Room Condition, may be what you are looking for.  A heater is housed just above the fan blades, and the heat being generated is evenly distributed throughout a room. 

These sophisticated fans will cost between $270 and $400 depending on options and finishes, and can be ordered through the Reiker web site, or found at some Home Depot stores.