maintaining factory-spec combustion efficiency and thermal safety without the need for field modifications

ensuring seamless integration into existing pneumatic architectures without requiring extensive recalibration of receiving controllers

Precise Thermal Cutout: Factory-calibrated for a 125°F opening to prevent heat exchanger fatigue and potential cracking

Direct OEM Fit: Guaranteed compatibility with Williams Forsaire 3508

Reznor 235953 Pressure Switch 340793-762 maintaining factory-spec combustion efficiency andThe Reznor 235953 Pressure Switch is a critical safety component designed for precise airflow monitoring in industrial and commercial heating units. Rated at a 2. 25 inch wc set point, this SPDT pressure switch ensures the combustion fan provides adequate drafting before allowing the gas valve to energize. Built with robust materials to withstand high cycle operations in demanding environments, the 235953 serves as an OEM replacement for diverse HVAC