The key to maximizing your kerosene heaters performance is proper maintenance. Several consumer advocacy groups including the CPSC (Consumer Protection Agency), American Lung Association, and EPA (Environmental Protection Agency) recommend annual replacement of the wick in a kerosene heater. Dura Heat kerosene heater replacement wicks offer a fiberglass burning surface and cotton skirting. This provides a good fuel draw and long lasting burning surface. There is a Dura Heat replacement wick for almost every modern kerosene heater brand /model.