The Lennox 27J02 Flame Sensor is a critical OEM replacement part designed for precision flame monitoring in high-efficiency Lennox gas furnaces

This 3/4" zone valve is a standard choice for contractors requiring a durable

Featuring a 3-inch insert probe

As a 30 mV universal thermocouple

Armstrong Furnace R102699-02 Pressure Switch The Lennox 27J02 Flame SensorThe Armstrong Furnace R102699 02 Pressure Switch is an essential OEM replacement part designed for precise combustion monitoring in high efficiency Armstrong Air furnaces. This SPST (Single Pole Single Throw) pressure switch is factory calibrated to a setpoint of . 70" WC, ensuring the inducer motor generates sufficient static pressure before allowing the ignition sequence to proceed. Engineered with dual 1 4" barb connections, this component provides