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Ships within 48 hours · Estimated delivery Aug 31 - Sep 5
A healthy switch will show near-zero ohms
Professional-grade Lennox 21L99 Flame Sensor is a critical OEM replacement part designed to maintain pilot and burner safety through precise flame rectification
Designed for seamless integration with RS series sensors
Standardized Compatibility: Features standard 3/4 inch NPT solenoid threading for seamless integration into existing piping manifolds
effectively replacing discontinued or legacy part numbers including PRS30010 and PRS2421
Lochinvar & A.O. Smith 100327314 Pressure Switch Refrigerant A healthy switch will showThe Lochinvar & A. O. Smith 100327314 Pressure Switch is a critical safety component designed for high performance HVAC system diagnostics and forced draft combustion control. As a technical professional, you know that maintaining precise pressure differential is non negotiable for safe burner operation. The 100327314 serves as the direct replacement part for legacy models 100166196 and PRS2705. This air pressure switch is engineered to sense the
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