A furnace control box is an essential component of any home heating system. It is responsible for controlling the flow of electricity to the furnace, and it is also responsible for regulating the temperature of the home. The furnace control box is typically located near the furnace itself, and it is usually made of metal. It contains a number of switches, relays, and circuit breakers that are used to control the flow of electricity to the furnace. The furnace control box also contains a thermostat, which is used to set the desired temperature for the home. The furnace control box is an important part of any home heating system, as it ensures that the furnace is operating safely and efficiently. Without a properly functioning furnace control box, the furnace may not be able to provide the desired level of heat, and it may also be at risk of malfunctioning.