Description
The Lochinvar & A.O. Smith 100294587 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 efficiency, monitoring pressure conditions and signaling the control board to allow or interrupt operation based on preset thresholds.
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 safe burner operation
- Direct drop-in replacement minimizes installation time and complexity
Application
This pressure switch is intended for use in Lochinvar and A.O. Smith residential and commercial water heating and boiler applications. Always verify compatibility with your specific model before installation. Refer to your equipment’s service manual for wiring diagrams and mounting instructions.
Why Choose OEM Parts?
- Engineered to original manufacturer specifications
- Maintains equipment warranty compliance
- Reduces the risk of premature failure or misdiagnosis
- Ensures consistent, safe system performance







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