Armstrong Furnace R100306-02 Pressure Switch

The Armstrong Furnace R100306-02 Pressure Switch is a vital safety component designed for precise pressure monitoring in high-efficiency HVAC systems. Engineered for reliability, this 0.3" WC pressure switch ensures that the inducer motor is creating sufficient draft before allowing the ignition sequence to proceed. As a genuine Armstrong replacement part, the R100306-02 provides a perfect fit for compatible gas furnaces, preventing dangerous exhaust leaks and ensuring peak operational efficiency. This furnace draft inducer switch is calibrated to detect subtle changes in static pressure, providing a critical fail-safe that protects both the equipment and the home. Whether you are performing routine maintenance or a critical repair, utilizing OEM HVAC components like this air pressure sensing switch ensures your heating system meets original manufacturer specifications for performance and safety. Trust this high-quality pressure switch for Armstrong furnaces to maintain consistent heating cycles throughout the coldest months.

• Precise Calibration: Factory-set at .3" WC to ensure accurate venting and safe furnace operation.
• Enhanced Safety: Acts as a critical limit switch to prevent ignition if proper airflow is not detected.
• OEM Reliability: Genuine Armstrong part ensures long-term durability and system compatibility.
• Simple Installation: Designed for a direct fit, reducing downtime during furnace repairs.

How do I know if my furnace pressure switch is failing?
Common signs include the furnace failing to ignite, the inducer motor running continuously without heat, or seeing a specific fault code on your furnace control board indicating a pressure switch stuck open or closed.

Can I use a universal pressure switch instead of the R100306-02?
It is highly recommended to use the exact Armstrong R100306-02 to match the specific 0.3" WC requirements of your unit to ensure safety and proper operation.

What causes a pressure switch to trip?
A trip is often caused by a blocked flue, a failing inducer motor, cracked heat exchanger, or moisture buildup in the sensing tubes.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.