Each can burn for approximately 3 hours with a beautiful 7 inch vibrant yellow flame and has a wonderful crackling sound * SunJel gel fuel is tested in Terra Flame Home fireplaces * Burn time results may vary depending on the situation as every situation is different with no soot, fumes or odor * Burn time variables include but are not limited to: type of fireplace, elevation, airflow, as well as many other conditions * All SunJel products are easy to light and require no ventilation