Bradford White 239-44724-01 Vacuum Switch

Maintain peak combustion efficiency with the Bradford White 239-44724-01 Vacuum Switch, a critical OEM safety component for gas-fired water heating systems. This intake vacuum switch is specifically calibrated to a 1.20 inch NC (Normally Closed) set point, ensuring the blower motor establishes proper draft before the ignition sequence initiates. As a genuine Bradford White replacement part, it prevents burner operation under unsafe venting conditions, protecting the heat exchanger and residential environment from improper exhaust. Designed for 120V pilot circuits, this water heater pressure switch features high-temperature resistant housing and standard spade terminals for a secure electrical interface. For technicians performing diagnostics on power-vented units, this HVAC vacuum switch is the primary solution for resolving pressure switch lockout codes. Always verify the specific pressure switch rating and model compatibility using the water heater's serial number to ensure precise pneumatic response and system safety.

• OEM Precision: Factory-calibrated to 1.20" WC, ensuring exact compatibility with Bradford White power-vented draft transitions.
• Combustion Safety: Interlocks the gas valve with venting pressure to prevent operation during flue blockages or blower failure.
• Direct Recovery: Resolves common "Pressure Switch Failed to Close" or "Stayed Open" error codes on residential gas units.
• Industrial Build: Engineered with durable diaphragms to withstand the rapid cycling and thermal demands of high-recovery water heaters.

Common Questions

Is the 239-44724-01 compatible with other brands?
This is an application-specific OEM component. While it may resemble generic switches, its specific 1.20" NC trip point is engineered for Bradford White venting logic. Using an incorrect switch can lead to ignition failure or unsafe operation.

What are the symptoms of a failing intake vacuum switch?
Common signs include the blower fan running continuously without ignition, specific LED status codes (typically 2 or 3 flashes), or the burner shutting down shortly after startup due to a lost vacuum signal.

Can I adjust the set point on this switch?
No, this switch is factory-sealed and non-adjustable. If the vacuum levels do not meet the 1.20" NC requirement, technicians should inspect the venting, intake screens, and blower wheel for obstructions before replacing the switch.

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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.