Lennox 22W25 Relay Board Kit

The Lennox 22W25 is a Relay Board Kit, designed to be used only as a replacement part for Lennox air conditioning and heating systems. It includes one or more relays which can be explained as electrical switches. These relays switch current to different circuits, most essentially as a fan, based on signals received from the control board. Using ON/OFF control, the relay board makes the fan work properly, closing or opening circuits when needed. This keeps the right flow of air in your home and possibly saves energy because the fan is not on for nothing.