Modine 5H0722750004 SPST Pressure Switch 1.07 Inch Water Column

The Modine 5H0722750004 is a single-pole, single-throw (SPST) pressure switch designed for use in Modine gas-fired unit heaters and HVAC equipment. This precision safety component monitors air pressure within the heating system and activates at a set point of 1.07 inches water column (WC), ensuring proper combustion ventilation and safe heater operation.

Key Features:

• SPST (Single-Pole, Single-Throw) configuration for reliable on/off switching
• Calibrated to activate at 1.07 inches water column pressure
• Genuine Modine OEM replacement part for assured compatibility
• Automatically resets after pressure restriction is corrected
• Prevents burner operation when ventilation is compromised
• Critical safety component that helps prevent carbon monoxide hazards

This pressure switch serves as an essential safety device by monitoring the pressure differential created by the inducer fan. If ventilation becomes restricted due to blocked vents, debris, or airflow issues, the switch prevents the main burner from firing, protecting against dangerous combustion conditions. The switch closes when proper negative pressure is established, allowing the heating sequence to proceed. Commonly used in Modine Hot Dawg, PDP, and other gas-fired unit heater models, this component should be replaced when experiencing intermittent shutdowns, lockout codes, or failure to ignite.