Fireplace Insert Electrical Specifications Cassie Wood November 06, 2024 21:26 Updated Fireplace inserts use 120 Volts, 1400 Watts, 11.67 Amps, 4600 BTU. Related articles Why Your Fireplace Needs Its Own Outlet Planning for the Electrical Usage of your Fireplace Fireplace Insert Warranty Denied - Instructions for Buying Order Replacement Locating Fireplace Insert Hardware Understanding Fireplace Insert Lighting and Heat Functions