Vulcan Stove Fan (Stirling Engine Powered) No electricity needed, starts with a handspin. Works entirely from the heat from the stove. Quiet, safe, economical operation. Zero Maintenance (technical advances means no oiling) Eco friendly, 100% mechanical, No fragile electronics. Circulates up to 2.2 times more air than other stove fans. Air flow is approximately 215 CFM at 930F (500C). Operates on almost all stoves: From 300F (150C) to 930F (500C) Precision engineered and hand built in England Costs nothing to operate Quiet operation.