You may never have heard of a furnace pressure switch, but it plays a critical role in preventing carbon monoxide produced by your heating, ventilation and air conditioning (HVAC) system from building ...

Description: Heat treat ovens are very common in the heat treat industry and are commonly referred to as Companion Draw Furnaces or Draw Batch Furnace. Wisconsin Oven offers 40 standard SDB heat treat ...

It must be located within sight of the furnace. When servicing the furnace, the electrician must be able to see the switch.