Its classic mechanical room thermostat interface is preferred by contractors who prioritize durability and ease of use in environments where digital complexity is unnecessary

Optimized Ignition Timing: Features a 0-second pre-purge and a 7-second TFI for rapid and consistent burner startups

Flexible Installation: Equipped with a compression fitting and multiple mounting options to accommodate standard 1/4" or 3/16" tubing

Ensure all control wiring is secured to the line set with tie straps to prevent mechanical interference with fan blades

always verify your amplifier model—such as the A1494—to ensure proper voltage and signal communication

Lennox 75W15 Limit Switch Els PW 17895 Its classic mechanical room thermostatThe Lennox 75W15 Limit Switch is a high performance L165 30F limit switch designed as a genuine OEM replacement for residential and commercial heating equipment. Engineered to function as a critical safety control, this Lennox furnace limit switch operates as a normally closed (NC) snap disc limit control that opens at 165F and resets at 135F. This automatic reset component is essential for preventing heat exchanger damage by interrupting the gas