answer:Most gas ranges have four burners, measured in British thermal units per hour (Btu/hr.): one or two medium-output burners (about 9,000 Btu/hr.), a small burner (about 5,000 Btu/hr.), and one or two large burners (about 12,500 Btu/hr.). Consider a gas range with at least one high-output burner on the cooktop that will provide a higher level of heat—usually up to 15,000 Btu/hr.—instantly. These burners make it easy to quickly boil and sear foods. Convection oven helps cook/bake food more evenly by circulating the air in the oven. I highly recommend one, if you do a lot of baking. Good Luck! R