Plaza notes
Hard ruleDescription
While the 7-pin layout is common
The units are identical in technical specifications
Can this contactor replace a 1-pole or 2-pole model
and other major HVAC brands
Why is the valve failing to close
Lochinvar & A.O. Smith 100208404 Pressure Switch 30067439-890 While the 7-pin layout isThe Lochinvar & A. O. Smith 100208404 Pressure Switch is a critical safety component designed for high efficiency water heaters and boilers. As a genuine OEM replacement part, it is functionally identical to the PRS2704, ensuring a precise fit and reliable performance for troubleshooting blocked flue or venting issues. This differential air pressure switch monitors the pressure across the combustion blower to verify proper airflow before allowing the
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
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