Description
The Lochinvar & A.O. Smith 100166222 is a genuine OEM pressure switch designed as a direct replacement for compatible Lochinvar and A.O. Smith water heater and boiler systems. Pressure switches play a critical role in system safety and performance, monitoring pressure conditions and signaling the control system to prevent unsafe operation.
Key Features
- Genuine OEM replacement part — ensures proper fit and function
- Designed for use with compatible Lochinvar and A.O. Smith heating equipment
- Monitors system pressure to protect against unsafe operating conditions
- Helps maintain reliable ignition sequencing and burner operation
- Direct drop-in replacement for simplified installation
Applications
- Compatible Lochinvar water heaters and boilers
- Compatible A.O. Smith commercial and residential heating systems
Why Choose OEM Parts?
Using genuine OEM components like the 100166222 pressure switch ensures your Lochinvar or A.O. Smith system operates as designed. Aftermarket substitutes may not meet the precise electrical and pressure specifications required for safe, warranty-compliant operation. Always verify compatibility with your specific model before installation.







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