The isolated coil design

Is this compatible with all Hydrostat models

this nichrome coil is close-wound and designed to be stretched to the specific length required for your heater frame

since it is normally closed

Lennox 65W63 Pressure Switch The isolated coil designThe Lennox 65W63 Pressure Switch is a critical safety component used for precision monitoring of the inducer fan motor in gas furnace systems. As a direct replacement for 25W69, this OEM Lennox pressure switch (part number 100684 07) is calibrated with a precise set point of 0. 10" WC, ensuring that the ignition sequence only initiates when proper venting and combustion air pressure are verified. Specifically engineered for Lennox and Allied furnace