Lennox 27K16 Limit Switch Els PW 17895 Secure Operation: The blow-out proof

Secure Operation: The blow-out proof stem design prevents catastrophic failure under extreme pressure spikes

as a passive linkage component

check for continuity across the terminals when the unit is cool

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Lennox 27K16 Limit Switch Els PW 17895 Secure Operation: The blow-out proofThe Lennox 27K16 is a heavy duty automatic reset limit switch specifically engineered for Lennox furnace and air handler applications. This critical safety component features a factory set thermal range designed to open at 175F and automatically close at 145F, effectively maintaining a 30F differential to prevent heat exchanger overheating. As a genuine OEM replacement part, the 27K16 ensures seamless integration into existing Lennox HVAC systems,