SIOUX FALLS, SD - We've had our share of cold days and nights this winter and a lot of people invest in a space heater to warm up a room or two. You can spend a little or a lot on a portable heater. But if are you getting what you pay for in the more expensive versions? The Sioux Empire Safety Village has offices in the old armory building at the fairgrounds. "It was a little cool in the mornings, so we went looking for a space heater that had a little safety built into it and had a decent track record," Dave Renli of the Sioux Empire Safety Village said.