DIY Radiant Space Heater Runs Electricity-Free Here is a homemade radiant space heater that uses terra cotta flower pots and candles. It not only costs less to run than an electric space heater, but it is noiseless compared to a heater with a fan. It’s great in small rooms or if you’re going to be sitting near it for a few hours. This heater works best in households without two-year-olds and cats. Visit DesertSun02’s YouTube channel for even more heaters and improvements to this one. Thanks, Catherine Winter-Hebert and Inhabitat. Posted by → December 30, 2014 at 3:50 PM under News and Events