this switch is built for thermal stability and rapid response in high-cycle environments

Blower Coordination: Synchronizes the timing of the indoor fan with the heating elements to avoid "cold blow" at startup

a higher or lower sensitivity board may be required to prevent false readings or failure to sense

Its adjustable temperature range and rugged construction make it the standard choice for maintaining optimal HVAC thermal management in residential and commercial hydronic loops

Rheem-Ruud 625040 Ignition Module Els PW 29614 this switch is built forThe Rheem Ruud 625040 Ignition Module is a high performance intermittent pilot ignition control engineered for 24VAC gas fired furnaces, boilers, and commercial water heaters. As a direct OEM replacement part, this module ensures precise HVAC system diagnostics and sequence control. It features a 1 second prepurge (1sPP) to clear the combustion chamber and a 90 second continuous trial for ignition (TFI) to provide a stable spark for reliable burner