Just 10 minutes on the stove, leave for work or play and return home to a delicious meal. Thermal cooker saves energy costs and preparation time. Simply place the ingredients in the inner pot, cover lid and bring to a boil on your stove (approx. 10 minutes). When brought to a boil, remove from stove and place in outer thermal pot. Thermal technology creates a convection effect by using the steam produced inside to circulate and continue cooking for up to 30 minutes and warms for up to 8 hours. Food is cooked in its own moisture and steam, so nutrients are preserved. Compared to a pressure cooker, thermal cooker is 30 percentage more energy efficient. Warranty One-year parts and labor warranty. Customer must pay all repair and freight charges after warranty period. Warranty applies to residents of the United States only.