Bard 9045-042 - Heat Exchanger Assembly OS140

Bard part number 9045-042 is an OEM heat exchanger assembly (OS140) used in Bard wall-mounted gas/electric HVAC units to transfer heat safely from the burner section into the airstream. Replacing a worn or damaged heat exchanger is critical for reliable heating performance and for maintaining proper combustion airflow and temperature rise, especially when troubleshooting repeated limit trips, poor heat output, or suspected exchanger deterioration. Because heat exchanger designs vary by model series, heating capacity, and cabinet configuration, confirm the exact unit model and serial number and match your parts breakdown before ordering Bard 9045-042 to ensure correct fit and safe operation.

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