York S1-025-26366-001 Limit Switch Key Benefits Universal Compatibility: Specifically

Key Benefits Universal Compatibility: Specifically designed for McDonnell & Miller Series 21

Common Questions Is this orifice compatible with both Natural Gas and Liquid Propane systems

this thermal safety switch acts as a fail-safe mechanism

requiring a replacement like the 100241

Precision Machined SAE 45

York S1-025-26366-001 Limit Switch Key Benefits Universal Compatibility: SpecificallyThe York S1 025 26366 001 is a high precision HVAC furnace limit switch engineered for critical temperature regulation within commercial and residential gas fired units. This OEM York replacement part features a standardized SPDT configuration designed to disrupt the burner circuit if heat exchanger temperatures exceed safe operating parameters. Operating on an auto reset thermal disk mechanism, the unit is calibrated for an operating temperature