Bard 8406-042BX - 0.28 in. w.c. Pressure Switch

The Bard 8406-042BX pressure switch is an OEM safety and proving switch commonly used in Bard wall-mounted HVAC equipment to monitor airflow or draft conditions. Rated at 0.28 in. w.c., this switch helps the unit confirm proper air movement and protects the system by preventing operation when the required pressure signal is not present, which can point to issues like a restricted filter, blocked venting, or a failing fan. Use this genuine Bard part to maintain correct system interlocks and reliable start-up sequencing, and always match the rating and tubing/terminal orientation to the original switch being replaced.

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Manufacturer description: Pressure Switch .28 W.C.-Boxed
Replacement part number: NLA - Tridelta # BS-FS6337-649 .28"WC

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(844) WALLMOUNT (844-925-5668)