Armstrong Furnace R40403-003 Blower Control Fan Timer Board

The Armstrong Furnace R40403-003 Blower Control Fan Timer Board is used to control the blower motor for heating and cooling systems more efficiently. This board controls the fan’s delay-on and delay-off time, which helps to increase the system's efficiency. It starts the blower after the furnace has warmed up and continues to run it for a short time after the system has stopped, ensuring proper air circulation. It is easy to install and can be used to ensure that the system is running at its optimum and also to minimize the damage on the furnace.