Armstrong 57W79 Furnace Pressure Switch

Armstrong 57W79 Furnace Pressure Switch delivers precise control for your furnace, helping to maintain safe ignition and steady heating performance. This Type Pressure Switch is designed for use on furnaces that require a 0.7 Inch WC rating and features a Green Label for compliance, ensuring reliable safety operation and long service life.

Engineered for durable, dependable service, this switch is a straightforward replacement part that fits compatible furnace models needing a 0.7 Inch WC pressure switch. The Green Label certification signals quality and provides confidence during installation and maintenance.

With a compact, rugged design, the Armstrong 57W79 switch installs quickly and supports consistent pressure sensing in your heating system. Choose this reliable component for efficient furnace operation, easier troubleshooting, and lasting performance in residential or light commercial applications.

• 0.7 Inch WC pressure rating
• Type: Pressure Switch for furnaces
• Used On Furnace models requiring this switch
• Green Label certified for quality
• Durable, easy-to-install design