this thermistor ensures the unit maintains accurate setpoints by monitoring the air entering the evaporator coil

this limit control switch interrupts the 24V or line voltage circuit to the heating elements if the discharge air or internal heat exchanger temperature exceeds the 220-degree Fahrenheit threshold

and a stainless cotter pin

If you notice the furnace is short-cycling or the blower fan runs continuously while the burner remains off

Aprilaire 35 Humidifier Water Panel this thermistor ensures the unitThe Aprilaire 35 Humidifier Water Panel is a critical component for maintaining peak evaporative performance in residential whole house humidifiers. This evaporator pad serves as the direct replacement for 59P94 and is engineered with a porous ceramic type coating on a heavy duty aluminum mesh frame. This unique design ensures maximum water absorption and optimal surface area for efficient evaporation as dry air passes through the media. For