The Atlantic Kitchen Heater 121 fire box is large and may be fitted for coal, wood, oil, or gas. In addition, extensive heat transfer has been obtained by using convection flanges on the prime heating surfaces. At the back, almost out of sight, is the return flue - an application of an old principle in a new way. Flue is so constructed that it is all additional and supplemental heating surface- it acts as a draft stabilizer and is a valuable and helpful new addition to kitchen heater design.