lifting flame or "flame rollout" due to excessive air velocity

ensuring your HVAC system shuts down safely when thermal thresholds are exceeded

Common Questions: Is the 8402-096BX a resettable limit switch

reusing a worn gasket risks gas leaks and "rumbling" combustion due to air infiltration

Lennox 87H92 Limit Switch lifting flame or "flame rollout"For service technicians working on older Lennox, Allied, or Ducane heating units, the Lennox 87H92 Limit Switch is a critical safety component. This 100 140F AUTO Limit Switch is an SPST (Single Pole Single Throw) device designed to maintain air temperature within the plenum. The 87H92 is identical to 20121901 and serves as a direct OEM replacement parts solution for a variety of residential furnace series, including Lennox G24, G26, AF80MPA, and GH19