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Bard part 9044-221 is an OEM pressure switch (mfr. reference 1000746) used as a safety-proving device on select Bard wall mounted HVAC equipment, helping the unit confirm proper pressure conditions before allowing operation and shutting the system down if the required pressure is not met. When a Bard unit short-cycles, locks out, or shows a pressure-related fault, replacing a weak or inconsistent switch with the correct factory part is often the right fix, but match it by model and serial number since pressure switch ratings and tubing or wiring styles can vary by unit configuration.
Please call for available options or find replacement parts.
(844) WALLMOUNT (844-925-5668)