Heil 1191249 SPST Pressure Switch .42 Inch WC

The Heil 1191249 is a single pole single throw (SPST) pressure switch designed for precise air pressure monitoring and control in residential and light commercial HVAC systems. This OEM replacement component activates at 0.42 inches water column (WC), making it ideal for use in gas furnaces and air handlers where accurate pressure sensing is critical for safe operation.

Key Features:

• 0.42 inch water column activation pressure for reliable furnace pressure monitoring
• 1/4 inch barb connection for secure tubing attachment
• SPST configuration provides simple on/off switching functionality
• Direct OEM replacement for part number 1183920
• Compatible with multiple brands including Heil, Quaker, ICP (International Comfort Products), Comfortmaker, Tempstar, Arcoaire, Day & Night, KeepRite, and Lincoln
• Factory-tested for quality assurance and long-term reliability

This pressure switch is engineered to provide dependable performance in demanding HVAC applications. The straightforward design allows for quick installation and easy maintenance, helping HVAC technicians minimize service time while ensuring proper system operation and safety compliance.