This document provides instructions for repairing a portable electric heater. It describes the two main types of portable heaters, convection and radiant, and explains how to identify common malfunctions like issues with the power unit, thermostat, electrical cord, heating elements, or fan. The document lists the tools needed, including various screwdrivers and pliers, and provides steps for repairs such as unplugging the heater, removing screws and components to access the thermostat and power switch, and properly disconnecting electrical leads.