Heil 34332903 Automatic Limit Switch 170-190°F Gas Furnace

The Heil 34332903 is an OEM automatic limit switch designed for gas furnaces and HVAC systems. This essential safety component automatically monitors and controls temperature within the 170-190°F operating range, ensuring safe and efficient furnace operation.

Key Features:

• Temperature range: 170-190°F automatic operation
• 3-inch insert design for easy installation
• OEM replacement part for reliable performance
• Automatic reset functionality for convenience
• Durable construction for long-term reliability

Compatibility:

This limit switch is compatible with multiple HVAC brands including Heil, ICP (International Comfort Products), Comfortmaker, Tempstar, Arcoaire, Day & Night, KeepRite, Lincoln, and Kenmore furnace models. Used on gas furnace models including GNK075N14B3 and GNK125N20B3.

The limit switch plays a critical role in furnace safety by preventing overheating and shutting down the system if temperatures exceed safe operating limits. When temperatures return to normal range, the automatic reset feature allows the system to resume operation.