Armstrong Furnace R604221-01 Door/Interlock Switch

The Armstrong Furnace R604221-01 Door/Interlock Switch is an essential safety part that is used in HVAC systems especially in Armstrong Furnaces. This switching guarantees that the furnace functions when the door is shut and gives no dangerous situations by stopping power as the door opens. It has a high level of construction, which affords durability and reliability making it useful in different heating applications. Advantages of the R604221-01 include increased safety, compliance with the HVAC system code, and installation convenience. By this interlock switch, users will be able to guarantee safe furnace operation and at the same time, reduce the risks.