Modine 5H78034-10 - Vacuum Pressure Switch

Modine 5H78034-10 Vacuum Pressure Switch is a control and safety component designed to monitor pressure conditions in compatible Modine HVAC equipment. It operates by sensing changes in vacuum or pressure within the system and switching the electrical circuit when the specified pressure level is reached. Commonly used in Modine heating systems, including gas-fired unit heaters and related ventilation equipment, this switch helps verify proper airflow and combustion operation. Its reliable pressure monitoring supports safe equipment performance, protects system components, improves operational efficiency, and helps prevent damage caused by abnormal pressure conditions.