Bard 9044-278 - High altitude pressure switch

Bard part 9044-278 is an OEM high altitude pressure switch used on select Bard gas heating systems to prove proper combustion airflow and keep the furnace operating safely at higher elevations where air density changes. When this switch is weak or out of calibration, the unit may short cycle, lock out, or fail to fire even though the inducer is running, so replacing it with the correct Bard switch helps restore reliable heat operation and correct safety monitoring. Because high altitude requirements vary by model and elevation, confirm your unit model and the required switch specification in the Bard parts list or installation manual before ordering 9044-278.

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