Description
Lochinvar & A.O. Smith 100208385 Pressure Switch Overview
The Lochinvar & A.O. Smith 100208385 is an OEM replacement pressure switch rated at 3″ water column (WC), engineered to maintain safe and reliable operation in compatible Lochinvar and A.O. Smith heating systems. Pressure switches are a critical safety component, monitoring combustion air pressure to verify proper draft inducer operation before allowing ignition — helping to protect equipment and occupants from unsafe operating conditions.
Key Features
- OEM replacement pressure switch for Lochinvar and A.O. Smith heating equipment
- Rated at 3″ WC (water column) setpoint
- Monitors combustion air/draft pressure to ensure safe ignition sequencing
- Designed for direct, drop-in replacement — no modifications required
- Helps protect against unsafe combustion conditions caused by blocked flue or failed draft inducer
Application
- Compatible with select Lochinvar and A.O. Smith boilers and water heaters
- Refer to your equipment’s service manual or parts list to confirm compatibility before installation
Why Replace Your Pressure Switch?
A faulty pressure switch can cause nuisance lockouts, prevent ignition, or — in the case of a failed-open switch — allow unsafe operation. Replacing with the correct OEM part (SKU 100208385) ensures your system performs as designed and maintains compliance with manufacturer specifications.
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